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Revision 266 by tony, Wed Dec 26 18:34:32 2018 UTC vs.
Revision 303 by tony, Fri Jul 17 22:29:57 2020 UTC

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1 < IBX Change Log  version                    (2.3-3) Wed, 26 Dec 2018 18:20:57 +0000
1 > FBINTF Change Log  version          (1.1-6 Build 12214) Fri, 17 Jul 2020 23:10:11 +0100
2  
3 < This is rc1 for 2.2.3.
3 > 1. GetImplementationVersion now correctly returns '3.0' for Firebird 3 API
4 >   with a Firebrid 3 client library.
5  
6 < 1. New property for TIBDatabase and TIBXServicesConnection. This is "WireCompression".
7 <   If this property is set to true then the Client will request WireCompression for
8 <   the connection. Note: "WireCompression = true" must be set in the server's
9 <   "firebird.conf". This property is overridden if "WireCompression = true" is set
10 <   in the client "firebird.conf" when wire compression is always requested by the client.
6 > 2. Linux Only: FIREBIRD environment variable is now checked when loading the client library.
7 >    If a client library path is not explicitly provided and the FIREBIRD environment
8 >    variable is set then the directory given by this variable and any 'lib' subdirectory
9 >    are searched for the Firebird client library. Only if none is found, is the default
10 >    client library used.
11  
12 < IBX Change Log  version                   (2.3-2) Wed, 05 Dec 2018 12:19:23 +0000
12 > 3.  IUtil.FormatStatus now used to format error messages when using new API
13  
14 < 1. Remove need to check for IsMultiThread by providing access to GUI timers via
14 <   IBGUIInterface. Note: master/detail delay timer does not apply to console
15 <   mode apps.
14 > 4.  Fixed Array SDL: array_desc_scale now correctly encoded as a signed integer.
15  
16 < 2. TIBCustomDataSet: SQLParser ignored if it does not contain a valid select
17 <   statement. This avoids problems if "Execute Block" is used as the Query.
16 > 5.  SQL_TEXT handling changed. When the value of an SQL_TEXT (i.e. fixed width string) column is
17 >    returned using GetAsString and the string codepage is UTF8, the string is truncated so
18 >    that the byte length corresponds to the number of characters specified for the column.
19 >    SQL_TEXT strings are no longer automatically trimmed to remove all trailing white space. This is
20 >    correct behaviour but may affect some implementations that relied upon automatic
21 >    trimming of trailing white space.
22  
23 < 3. IBSQLParser now uses the common SQL tokeniser from fbintf. This replaces the
24 <   internal SQL tokeniser routines.
23 > 6.  New IFirebirdAPI Calls:
24 >      function GetClientMajor: integer;
25 >      function GetClientMinor: integer;
26  
23 4. IBSQLParser: new property NotaSelectStmt. Set to true if SQL fails to parse
24   as a select statement, with or without CTEs.
27  
28 < 5. IBSQLParser: parser now recognises the "ROWS" clause.
28 > FBINTF Change Log  version          (1.1-5 Build 12044) Fri, 17 Apr 2020 12:30:01 +0100
29  
30 < 6. TIBXScript now uses the common SQL tokeniser from fbintf. This replaces the
31 <   internal SQL tokeniser routines.
30 > 1. ISQLParams.GetHasCaseSensitiveParams added. Returns true if param names are
31 >   case sensitive
32  
33 < 7.  Fix error in TIBXScript processing of "set" statements. This avoids exceptions
32 <    being raised for valid set statements processed by a data formatter.
33 > 2. Single line SQL comments starting with '--' are now recognised by SQL Parser.
34  
35 < 8. New published property for TIBDatabase and TIBXServicesConnection. This is
36 <   FirebirdLibraryPathName: string. If not empty it is used to explicitly specify
37 <   the path of the Firebird Library used by the database/services connection.
35 > 3. New API Calls:
36 >        IColumnMetaData.GetStatement
37 >        IColumnMetaData.GetTransaction
38 >        ISQLData.GetStrLength
39 >        IResults.GetStatement
40 >        IAttachment.OpenBlob (using Blob metadata)
41 >        IAttachment.OpenArray (using array metadata)
42  
43 < 9. New read only public property for TIBDatabase and TIBXServicesConnection. This
39 <   is FirebirdAPI and returns the IFirebirdAPI interface used by the database/
40 <   services connection.
43 > 4. FBMessages: removal of unused messages
44  
45 < 10.SQL Property editors now quote parameter names if "Quote identifier" is selected
43 <   or param name is not a valid SQL identifier.
45 > 5. TFBArray.Create (2nd case): ensure that FFirebirdClientAPI is correctly set.
46  
47 < 11. IBLookupComboEditBox: In Lazarus 2.0, TDBLookupComboBox takes a more restrictive
46 <    view of whether the text box should be editable when no DataSource is specified.
47 <    TIBLookupComboEditBox has been updated to workaround this problem. As long as
48 <    ReadOnly is false, the text box is editable when no DataSource is specified.
47 > 6. TIBSQLStatementType: SQLSavePoint added to end of enumeration.
48  
49 < 12. AllowUseOfFBLIB is now set to "true" at design time. This is to allow use of
51 <    the FBLIB environment variable. If you do not want to permit this then you
52 <    must modify the Register procedure in the design/IBDBReg.pas unit to remove
53 <    this setting.
49 > FBINTF Change Log  version          (1.1-4 Build 11515)  Fri, 28 Dec 2018 10:04:19 +0000
50  
51 < IBX Change Log  version                 (2.3-1) Thu, 25 Oct 2018 14:39:45 +0100
51 > 1. Fix a problem with the SQL parameter parser that failed to recognise parameters
52 >   where the second character of the parameter name is a numeric.
53  
54 < 1. IBCustomDataset: replace deprecated function ValidUTF8String with call to
55 <   Utf8EscapeControlChars
54 > 2. New method for IAttachment: procedure getFBVersion(version: TStrings);
55 >   This returns the isc_version connection information as one or more lines.
56 >   This is the same information as returned by isql with the -z option.
57  
58 < IBX Change Log  version                (2.3-0) Mon, 16 Apr 2018 09:48:06 +0100
58 > 3. If -dFIREBIRD3APIONLY is used as a compiler option then the legacy Firebird API
59 >   is no longer compiled in. Likewise, if -dLEGACYFIREBIRDAPIONLY is used as a
60 >   compiler option then the Firebird 3 API is no longer compiled in.
61  
62 < IMPORTANT: the source code tree has been re-organised for IBX 2.3. Please remove
63 < all previous copies of the IBX source code tree before installing this release.
62 > 4. IColumnMetaData: new method.
63  
64 < The IBX packages used by most users have not changed, with one exception. The
65 < IBServices unit has been moved to the package iblegacyServices.lpk. To continue
66 < to use the IBServices unit in your applications, please add the iblegacyServices
68 < to the list of dependencies. To do this, open the Project Inspector and select
69 < Add->New Requirement and select "ibLegacyServices" from the list of available
70 < packages.
64 >   TIBDateTimeFormats = (dfTimestamp, {SQL TIMESTAMP}
65 >                        dfDateTime,   {SQL DATETIME}
66 >                        dfTime);
67  
68 < 1. New unit IBXServices. The IBXServices unit is a re-architectured update of
73 <   the IBServices unit providing what is intended to be a clearer and easier to
74 <   use set of IB Services components. See Chapter 10 of the IBX User Guide for
75 <   more information and the guide to "Firebird Service Management Using IBX".
76 <   As indicated above, the legacy services components are still available and
77 <   provided in a separate package. There is no need to update working applications
78 <   using the older versions except for an additional package dependency.
68 >   function GetDateTimeStrLength(DateTimeFormat: TIBDateTimeFormats): integer;
69  
70 < 2. The IBX packages and source code tree have been re-organised in an attempt to
71 <   finally get rid of the "duplicate ppu" warnings. This re-organisation should
82 <   not affect existing users. Section 2.3 of the IBX User Guide describes the
83 <   new set of IBX packages.
70 >   This returns the max. number of characters returned by the "AsString" method
71 >   when the SQL type of the column is respectively TIMESTAMP, DATETIME or TIME.
72  
73 < 3. The ibx/examples/DBAdmin and the ibx/examples/services example have been
74 <   updated to use the new Services API components.
73 > 5. Additional argument for IAttachment.PrepareWithNamedParameters -
74 >     CaseSensitiveParams: boolean = false
75  
76 < 4. The iblocal package has been updated to use the new Services API components.
76 >   If this argument is set to true then SQL parameter names are assumed to be case
77 >   sensitive and must be referenced (using ISQLParams.ByName) using the case
78 >   sensitive name.
79  
80 < 5. procedure SetAutoAdmin; in the new IBX Services this method is now a member of
81 <   TIBXSecurityService. It had been wrongly classified in the previous version
82 <   as a per database configuration item. It is global to a server and hence
83 <   correctly positioned as part of the Security Package. In the DBAdmin example,
94 <   the setting has moved to the mappings page.
80 > 6. Bug fix: when setting a query parameter, it is now possible, when the parameter
81 >   is of type VarChar or Char to set the parameter to a numeric value (e.g. using
82 >   .AsCurrency) and then subsequently to update the value to a non-numeric string
83 >   using .AsString.
84  
96 6. TIBXScript: IgnoreCreateDatabase added. If true then CREATE DATABASE statements
97   are ignored.
85  
99 7. TIBDatabase: DropDatabase now ensures that all transactions have been properly
100   closed before the database is dropped. Before and After Disconnect event handlers
101   are also fired.
86  
87 < 8. TIBTransaction: OnStartTransaction event now fires every time the transaction
104 <   is started and not just the first time.
87 > FBINTF Change Log  version                  (1.1-3) Wed, 05 Dec 2018 14:28:10 +0000
88  
89 < 9. IBDataOutput: Use FormatFloat for all performance statistics to avoid platform
107 <   depenendency with comp type.
89 > 1. DARWIN only syntax error: fix missing semi-colon in TFBClientAPI.LoadIBLibrary
90  
91 < 10. IBDataOutput: select query data output is now sent to stdout instead of stderr.
91 > 2. Restrict IsMultiThread check to Unix only for compatibility with
92 >   https://bugs.freepascal.org/view.php?id=30535
93  
94 < 11. TIBDatabase: Remove regression. If a user login dialog changes the DatabaseName
95 <    then this is recognised and not ignored.
94 > 3. New SQL Tokeniser added to IBUtils. This is used to pre-process SQL with
95 >   named parameters and is intended to avoid problems with (e.g.) Execute Block
96 >   and processing internal parameters as statement parameters.
97  
98 < 12. TIBDataSet, TIBQuery, TIBTable: additions:
99 <    function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
116 <    function GetPerfStatistics(var stats: TPerfCounters): boolean;
117 <    property EnableStatistics: boolean read FEnableStatistics write SetEnableStatistics;
98 > 4. New interface IFirebirdLibrary provides access to the underlying firebird DLL
99 >   or shared object. Available via a new member (GetFBLibrary) of IFirebirdAPI.
100  
101 <    GetRowsAffected returns the affected row counts from the last insert/update/delete
120 <    if EnableStatistics = true then GetPerfStatistics returns the current stats
121 <    counters for the select query. Note: stats accumulate after each fetch from
122 <    the database. To get total query cost after open, call the "Last" method
123 <    and then GetPerfStatistics.
101 > 5. New function added to IB.pas
102  
103 <    See ibx/examples/consolemode for an example of the use of GetPerfStatistics
103 >   function LoadFBLibrary(aLibPathName: string): IFirebirdLibrary
104  
105 < 13. TIBExtract: Identity columns DDL. "Start with clause" now correctly encapsulated
106 <    in parenthesises.
105 >   This allows a Firebird Library to be loaded from an explicit path. use the
106 >   IFirebirdLibrary.GetFirebirdAPI member function to get the Firebird API using
107 >   the library. It is possible to load Firebird libraries from different locations
108 >   simultaneously, each with a distinct IFirebirdAPI.
109  
110 < 14. TIBExtract: new published property "AlwaysQuoteIdentifiers". If true then in dialect 3
131 <    SQL identifiers are always delimited by double quotes. If false, then they are
132 <    only delimited if the identifier is a reserved word, contains lower case or special
133 <    characters. Set this property to true to retain previous behaviour.
110 > FBINTF Change Log  version               (1.1-2) Mon, 16 Apr 2018 09:30:32 +0100
111  
112 < 15. Insert SQL Property Editor. In Insert Returning Clause, Identity column names
113 <    are now inserted in double quotes if not Reserved Words or valid SQL Identifiers.
112 > 1. Firebird.pas: {$OBJECTCHECKS OFF} added to file to avoid runtime error when
113 >   program compiled with -CR command line switch.
114  
115 < 16. TIBDataSet, TIBQuery, TIBTable: addition:
116 <       property MasterDetailDelay: integer {defaults to zero}
115 > 2. IServiceManager additions (informational):
116 >    function getProtocol: TProtocol;
117 >    function getPortNo: AnsiString;
118  
119 <    When non-zero and the dataset is a detail table referencing a master table
120 <    through either a MasterSource (TIBTable) or a DataSource (TIBDataSet, TIBQuery)
121 <    then a synchronisation delay is added (in milliseconds) between the master
122 <    row changing and the detail dataset being re-opened. If the master dataset
145 <    is scrolled before the delay expires then the delay is reset. This can be used
146 <    to avoid performance overheads when scrolling through a large master dataset.
119 > 3. IServiceManager improved error handling. Interfaces changed:
120 >    function Start(Request: ISRB; RaiseExceptionOnError: boolean=true): boolean;
121 >    function Query(SQPB: ISQPB; Request: ISRB; RaiseExceptionOnError: boolean=true) :IServiceQueryResults; overload;
122 >    function Query(Request: ISRB; RaiseExceptionOnError: boolean=true) :IServiceQueryResults; overload;
123  
124 <    Note: uses fptimer and hence requires a thread manager. Under Linux the
125 <    chreads unit must be included in your project. TTimer is not used in order
150 <    to avoid an LCL dependency. Requires FPC 3.0.2 or later.
124 > 4. IAttachment addition (informational)
125 >    function GetSecurityDatabase: AnsiString;
126  
127 < 17. TIBExtract: User role grants now excluded when etGrantsToUser not specified
128 <    with Extract Option eoDatabase.
127 > 5. IStatement: performance counters now updated after each Fetch. GetPerfStatistics
128 >   thus now returns accumulated stats for a select statement from opening a cursor
129 >   up to the last fetch.
130  
131 < 18. TIBLookupComboEditBox: Workaround added for https://bugs.freepascal.org/view.php?id=33428
132 <    When a deLayoutChanged event is reported on the ListSource dataset, the
157 <    combobox text is updated. This allows a listsource (detail) to be in a Master/Detail
158 <    relationship with the control's datasource (master).
131 > 6. DARWIN: uloadlibrary.inc bug fix. Many thanks to Luigi Naimi for correcting
132 >   the problem.
133  
134 < 19. TIBExtract: Full BigInt value range now supported for Generators/Sequences.
134 > 7. Type change: "TPerfCounters = array[TPerfStats] of Int64". Note "Int64"
135 >   replaces deprecated "comp" type.
136  
137 < 20. TIBExtract: Select Procedures (Procedure type 1) now include "SUSPEND;" clause in their
163 <    stubs. Pedantic fix really, as procedures output in dependency order anyway.
137 > 10. Testsuite Test10 updated to include thread synchronisation for event reporting.
138  
139 < 21. TIBExtract: Package Headers and Package Bodies are now included in the extracted
166 <    DDL (Firebird 3 and later only).
139 > 11. URL Connection Strings: inet4 and inet6 now recognised.
140  
141 < 22. TIBLookupComboBox Autocomplete Fixes:
169 <    i. Only appended text is now selected after autocomplete.
170 <    ii. Uppercase keys no longer ignored for autocomplete.
171 <    iii. Retain Prefix case is now honoured correctly.
172 <    iv. When a DataSource is assigned, typing after autocomplete now extends prefix
173 <        before autocomplete performed. i.e. behaviour now the same as when
174 <        no DataSource assigned.
141 > 12. IBUtils: Parse and Make Connect String now recognise URL style loopback syntax.
142  
143 < 23. TIBXScript: Single Line Comments starting with '--' are now ignored when occurring
177 <    between SQL statements.
143 > 13. IAttachment.CharSetName2CharSetID is now performed case insensitive.
144  
179 24. TIBExtract: New published property CaseSensitiveObjectNames. If false (default) then
180    ObjectNames are converted to upper case before matching against metadata object
181    names, unless the objectname is delimited by double quotes, in which case, the
182    double quotes are removed and the remaining string is used (unmodified) to match
183    against the metadata object name.
145  
146 <    If true then the ObjectName is used as is without modification and matched
186 <    against the metadata object name. No attempt is made to remove double quotes.
146 > FBINTF Change Log  version (1.1-1) Tue, 27 Feb 2018 16:51:16 +0000
147  
148 < 25. TIBExtract: New Extract Types: etDatabaseTriggers and etDDLTriggers. When used
189 <    with eoTrigger, these extract types can be used to select only Database Triggers,
190 <    or DDL Triggers or both. Ignored when etTable or etTrigger included in Extract Types.
148 > 1. IBUtils.QuoteIdentifierIfNeeded: Add check for space character.
149  
150 < 26. TIBXScript: If an exception occurs during the processing of a statement, the
151 <    statement separate character is now reset to the default (';').
150 > 2. IAttachment: add two new methods
151 >     function HasDefaultCharSet: boolean;
152 >     function GetDefaultCharSetID: integer;
153  
154 < 27. TIBDatabase: Reconnect method added and used by TIBXScript for reconnect.
154 >   These return, respectively, true if a connection default character set was
155 >   specified and the character set id of the connection default character set.
156 >   The DefaultCharSetID is cached when the connection is opened and hence does not
157 >   require a database lookup.
158  
159 < 28. TIBXScript: Transaction is no longer automatically reactivated immediately processing
198 <    a commit or reconnect statement and instead activated only when next SQL statement
199 <    is executed.
159 > 3. Avoid exception when a text blob is a stored procedure parameter.
160  
161 < 29. TIBSQL.HasField should no longer generate and exception when the field does not exist.
161 > 4. Update test suite to include a test for a stored proc returning a text blob.
162  
163 < 30. TIBXScript: case insensitive regex now used when matching statements instead of
164 <    converting statement to upper case.
163 > 5. IAttachment: add
164 >      function GetRemoteProtocol: AnsiString;
165 >      function GetODSMajorVersion: integer;
166 >      function GetODSMinorVersion: integer;
167 >      function GetAuthenticationMethod: AnsiString;
168  
169 < 31. TIBExtract: metadata comments now supported. New published property
170 <    IncludeMetaDataComments (default true). If true then metadata comments included
208 <    in extracted DDL. New Extract Object member eoComments. This may be used with
209 <    ExtractObject method to list all metadata comments.
169 >   These results are cached when the connection is opened and hence do not
170 >   require a database lookup.
171  
172 < 32. TIBExtract: ListObjectNames method added.
172 > 6. IAttachment: add "function GetConnectString: AnsiString;" This returns the
173 >   connect string used to create/connect to the database.
174  
175 < 33. Updated Database component editor to support additional connection string
176 <    types.
175 > 7. IAttachment: Create Database using SQL statement. The username and password
176 >   are now extracted and used to populate a DPB made available via IAttachment.getDPB.
177 >   It is now possible to use IAttachment disconnect/connect to reconnect to
178 >   a database for which the initial connection was established by a create
179 >   database sql statement. Available in FPC only.
180  
181 < IBX Change Log  version  (2.2-0) Wed, 28 Feb 2018 10:57:45 +0000
181 > 8. Update Test 1 to test 5, 6 and 7 above.
182  
183 < NOTE: THE LOCATIONS OF SOME OF THE UNIT DIRECTORIES HAS CHANGED FROM IBX 2.1. THIS IS TO
219 < AVOID DUPLICATE PPU WARNINGS. PLEASE REMOVE EARLIER VERSIONS OF IBX BEFORE INSTALLING THIS
220 < RELEASE.
183 > 9. IBUtils code tidy up.
184  
185 < NOTE: THE DBADMIN DEMO REQUIRES THAT THE MemDSLaz PACKAGE IS INSTALLED IN THE LAZARUS IDE.
185 > 10. Parameter Block interfaces "find" method. As documented, this should have
186 >   returned a nil interface when the item could not be found. Instead, an empty
187 >   interface item was returned. "Find" now works as documented and will return
188 >   a nil interface if the item cannot be found.
189  
190 < 1. IBExtract: Identity columns - add additional check for null column for generator name.
190 > 11. DBInformation: support added for isc_info_active_tran_count and isc_info_creation_date.
191  
192 < 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
193 <   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
194 <   information). However, this is also a very useful mechanism for returning updated computed by
195 <   column values. Values returned as a result of executing an Insert or Update statement
230 <   replace existing values in the current row for each corresponding column.
192 > 12. DBInformation: New interfaces: IDIRB and IDIRBItem added to support DB Information
193 >    requests with additional parameters. This is to enable support for fb_info_page_contents
194 >    (return of page contents). Response to fb_info_page_contents returned as
195 >    a string with code page CP_NONE.
196  
197 <   Previously, if a dataset's select query included read only (computed by) fields then
198 <   an automatic row refresh was performed after an insert or update query had been processed,
234 <   irrespective of the setting of the "ForcedUpdates" property. This has changed such
235 <   that an automatic refresh is no longer performed if an insert or update query contains
236 <   a returning clause that updates one or more fields on the current row. A full row
237 <   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
238 <   field values and the select query contains read only fields. Use of Insert/update
239 <   returning should be significantly more efficient than executing a refresh query.
197 > 13. DBInformation: Support for fb_info_pages_used and fb_info_pages_free added, plus
198 >    test suite updated.
199  
200 <   This behaviour change is intended to be backwards compatible and there should be no need to change
201 <   existing programs, other than to improve performance by using the new capability.
200 > 14. DBInformation: Support for fb_info_crypt_key (Firebird 3.0.3 onwards) added as
201 >    a string type, and fb_info_conn_flags (Firebird 3.0.3 onwards) added as an integer type.
202  
203 < 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
204 <   they are called when the dataset row is being deleted, there is no value in
205 <   updating the current record from the query result. Instead, a new event handler
247 <   "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
248 <   an OnDeleteReturning event handler is provided then it is called with the IResults returned
249 <   by the query. The event handler can then interrogate the query results and
250 <   perform whatever action is necessary. For example to confirm, to the user,
251 <   the deletion of a row with the returned values.
203 > 15. Service Manager: List of protocols supported expanded to include inet, wnet and xnet.
204 >    An overloaded version of IIFirebirdAPI.GetServiceManager also allows a non
205 >    default connection port to be specified.
206  
207 < 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
254 <   any Computed By or Identity Columns. The IBTables example has been updated to
255 <   illustrate the computation of the employee Full Name on update.
207 > FBINTF Change Log  version                             (1.1-0) Sun, 07 Jan 2018 15:20:02 +0000
208  
209 < 5. TIBTable: The GeneratorField property is now published.
209 > 1. Fix issues with setting SQL Param values using SetAsString with Numeric types.
210 >   Scale is no longer ignored.
211  
212 < 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
213 <   When InsertSQL is generated, the Identity columns are not included in the list of values to
214 <   be inserted. A RETURNING clause is added to the insert statement to return the value of
215 <   each Identity column after the insert is executed.
212 > 2. Fix issues with setting SQL Param values using SetAsString with Date values
213 >   not in locale format but which are recognised by Firebird. Date values that
214 >   cannot be converted to a string using Pascal library are now passed through
215 >   to Firebird as Text Strings.
216  
217 < 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
218 <   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
266 <   Insert..Returning clause.
217 > 3. Lookup character set name by codepage amended to ensure that CP_UTF8 returns
218 >   UTF8 and not UNICODE_FSS.
219  
220 < 8. TIBGenerator: small performance improvement by not preparing query each time
221 <   a new value is generated.
220 > 4. Charset ID problem. When using Firebird 3, with no default database character set
221 >   and a column has a non-default collation specified, an incorrect character set
222 >   id was being reported that could result in a 'division by zero' error when
223 >   used by IBX. This has now been fixed.
224  
225 < 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
225 > 5. Move GetCharsetName, CharSetID2CodePage, CodePage2CharSetID, CharSetName2CharSetID,
226 >   CharSetWidth from IFirebirdAPI to IAttachment. This is a better data model as
227 >   the character sets supported can be updated on a per database basis. That is
228 >   it is possible to add a (Firebird) user defined character set to a database.
229  
230 < 10. Property editors will now sync table name to a System Table when "Include System
231 <    Tables" is selected and the query is for a System Table.
230 > 6. Add RegisterCharSet to IAttachment. This is used to register a user defined character
231 >   set supported by Firebird with the API.
232  
233 < 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
234 <    values are no longer converted to milliseconds from TDateTime and then back again
278 <    to TDateTime (the conversion to milliseconds is the default TDataset approach).
233 > 7. Add missing isc_info_db_read_only to list of decoded Database Information items
234 >   in FBOutputBlock.pas and update test suite to include this item.
235  
236 < 12. Property Editors handling of Stored Procedures.
281 <    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
282 <      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
283 <      query).
284 <    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
236 > 8. FB30Client: avoid always using "StartMultiple" when only a single database attachment.
237  
238 < 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
239 <    can be used to select a package. If non-empty, the stored procedure name is
240 <    expected to be a stored procedure defined in the specified package and the
241 <    generated SQL will be as required for a stored procedure located in a package.
238 > 9. Loading Windows fbclient.dll: when using the FIREBIRD variable to locate the client
239 >   library or finding it by disk location, the PATH environment variable is now also set to
240 >   include the FIREBIRD directory. This is to ensure that the correct dlls in the
241 >   firebird client library dependencies are loaded.
242  
243 < 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
292 <    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
293 <    which a stored procedure can be selected. With no package name selected, non-package
294 <    stored procedures are listed.
243 > 10. Testsuite: Ensure consistent UTF-8 output on Windows console.
244  
245 < 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
297 <    for password on reconnect.
245 > 11. Testsuite: Update Windows script to include FPC 3.0.4 in search path.
246  
247 < 16. TIBDatabase: use IAttachment for connection default character set id, code page
300 <    and character set name.
247 > 12. FB30Statement: Protect call to "Move" and avoid calling with a nil pointer
248  
249 < 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
250 <    DB info lookups"
249 > 13. FB30Statement: A check has been added to ensure that all SQL Parameters
250 >    have been given a value (including NULL). Previously, failing to set the
251 >    value of an SQL Parameter could give rise to unpredictable results or
252 >    an SQLDA error.
253  
254 < 18. IBExtract: now supports DDL Triggers and Grants to DDL objects.
254 > 14. FB30Statement/FB25Statement: Set SQLParam "modified" when string value set.
255  
256 < 19. Add a property Editor for TIBUpdate.RefreshSQL.
256 > 15. FBAttachment: Avoid string reference count error when processing an Ansistring
257 >    parameter in an array of const passed to IAttachment.OpenCursor, etc.
258  
259 < 20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
260 <    parameters. This stops an exception being raised when the field cannot be
311 <    located in the record buffer.
259 > 16. FBAttachment: Allow for WideString and UnicodeString parameters in an array
260 >    of const passed to IAttachment.OpenCursor, etc.
261  
313 21. Property Editors now automatically include System Tables when opened and when the query table
314    is a System Table.
262  
263 < 22. IBServices: SQRB and SRB buffers are now reset when service query throws an exception.
317 <    This avoids errors due to a stale SQRB or SRB being used for the next query.
263 > FBINTF Change Log  version             (1.0-2) Sat, 04 Mar 2017 14:43:56 +0000
264  
265 < 23. IBServices: Service attach parameters now include "expected_db". This is used to
320 <    add the SPB item isc_spb_expected_db. This names a database using
321 <    an alternative Security Database (FB3 onwards) and allows (e.g. backup/restore) using such a
322 <    database. examples/services re-written to illustrate use of "expected_db".
265 > 1. Change syntax to Mode Delphi
266  
267 < 24. IBServices: TIBControlAndQueryService.WriteNextChunk no longer ignores isc_info_svc_timeout.
268 <    This avoids truncated backups when the server returns a timeout (busy) response.
267 > 2. Change all uses of string type to explicit AnsiString in order to ensure
268 >   compatibility between Delphi and FPC.
269  
270 < 25. TIBDatabase: isc_dpb_page_size now supported as a database parameter when using TIBDatabase.CreateDatabase.
270 > 3. Various syntax changes to ensure Delphi and FPC compilation including GUIDs
271 >   defined for each interface.
272  
273 < 26. TIBDatabase: DatabaseName property may now be prefixed by $TEMP$ or $DATADIR$ for local
330 <    databasenames. These are respectively expanded to the local system's temp directory
331 <    (including trailing delimiter) or to a prescribed data directory (including
332 <    trailing delimiter). Under Unix systems the data directory is a hidden directory
333 <    in the user's home directory. The hidden directory name is either the string returned
334 <    from the SysUtils "Vendor Name" or "IBX" if empty. In either case prefixed by a '.'.
335 <    Under Windows, the directory is the same as the Data Directory as decribed
336 <    above but instead prefixed by the User's application data path. These may be
337 <    used to improve application portability for Personal Databases.
273 > 4. Generics syntax variations for Delphi added
274  
275 < 27. TIBTable: FieldDefs property is no longer published. Due to the use of TIBFieldDef
276 <    this has not worked for a long time and is not useful either. FieldDefs should be
341 <    managed using the Fields Editor as with any other dataset. To access the fields
342 <    editor for a TIBTable component, double click on the component. The fields editor
343 <    is then displayed.
275 > 5. PChar replaced with PByte expect where an actual string is being referenced,
276 >   where PAnsiChar is used instead.
277  
278 < 28. TIBDatabaseInfo: new properties/function
346 <     * DateDBCreated (returns date/time database created)
347 <     * TransactionCount (returns no. of active transactions)
348 <     * GetDatabasePage(PageNo: integer) (returns contents of specified database page - SYSDBA only).
349 <     * PagesFree (Firebird 3 or later)
350 <     * PagesUsed (Firebird 3 or later)
351 <     * Encrypted (returns true if database encrypted. (Firebird 3.0.3 or later only)
352 <     * EncryptionKeyName (returns the name of the encryption key if any (Firebird 3.0.3 or later only)
278 > 6. Review of type definitions in IBExternals to ensure Delphi compatibility
279  
280 < 29. IBServices classes now provided the decoded release number in the (array) property ServerVersionNo.
280 > 7. Testsuite updated for Delphi
281  
282 < 30. TIBSecurityService now supports display/modification of the User Admin Role (Firebird 2.5 and later).
282 > FBINTF Change Log  version            (1.0-1) Fri, 24 Feb 2017 12:17:57 +0000
283  
284 < 31. TIBConfigService now has a procedure SetAutoAdmin(Value: boolean) to enable/disable
285 <    the automtic mapping of privileged OS users to the RDB$ADMIN role (Firebird 2.5 and later).
284 > 1. Limit maximum Blob segment read/write to MaxuShort. Avoids data loss with
285 >   large blobs and the FB3 API.
286  
287 < 32. TIBBackupService: New Option - NoDBTriggers equivalent to -nodbtriggers switch introduced
288 <    in the gbak utility at V.2.1 to prevent database-level and transaction-level triggers from
363 <    firing during backup and restore.
287 > 2. Update Event Handling algorithm to avoid looping due to recreation of the
288 >   event block.
289  
290 < 33. Both TIBBackupService and TIBRestoreService now support backup/restore statistics options
366 <    for verbose output using the new property "StatisticsRequested".
367 <    see https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-util-gbak.html#rnfb25-util-gbakstats
290 > 3. Avoid invalid XSQLDA error when the only parameter is updated to null
291  
292 < 34. TIBRestoreService: now supports new options RestoreMetaDataOnly (Firebird 2.5 and later).
292 > 4. Array Handling: fix problem with text arrays with character set none. When the
293 >   DB connection has a default character set (e.g. UTF8), an error is raised by
294 >   Firebird if the space allocated is not enough to allow for transliteration, even
295 >   though it is not required for character set none.
296  
297 < 35. TIBOnlineValidationService component added to the IBServices and the "Firebird Admin"
372 <    palette. This uses the online validation feature added in Firebird 2.5. The
373 <    services's properties enable inclusion/exclusion of tables and indexes using
374 <    regular expressions. See.
375 <    https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-apiods-api.html#rnfb25-apiods-api-onlinevalidation
297 > 5. IBUtils: List of reserved words brought up-to-date
298  
299 < 36. IBServices: procedure TIBConfigService.SetNoLinger added to set no linger
378 <    option on a database.
299 > 6. Add ISQL style performance statistics collection to IStatement
300  
301 < 37. TIBCustomService: Assign method implemented to allow copying of service login
302 <    context between service API components. "Detach" method now only detaches
382 <    service when last reference to the service interface detaches. Tidy up of
383 <    code for SetActive and Attach methods including password hiding.
301 > 7. Add IFirebirdAPI.CreateDatabase variant to allow execution of user provided
302 >   CREATE DATABASE statement.
303  
304 < 38. TIBDatabase: new properties: AuthenticationMethod and RemoteProtocol. Read only
305 <    and used to determine the auth method and protocol used for the connection.
304 > 8. Update SQL Statement parsing to allow for Array Dimensions. That is so that the ':' in
305 >   an array dimension is not mistaken for a named parameter prefix.
306  
307 < 39. TIBDatabase: ensure that SQLDialect setting is used when creating a database using
308 <    a Create Database Statement generated by IBX.
307 > 9. Trim function no longer applied to result of GetAsString for SQL_TEXT
308 >   when Character set is octets. Avoids loss of non printable characters at start of string.
309  
310 < 40. All IBServices now have an additional published property "PortNo". This may
311 <    be set to a non-standard port number when necessary. If zero then the default
312 <    port number is used.
310 > 10. Add function GetPerfStatistics to IStatement. This returns ISQL like performance
311 >    statistics for the last action. Requires use of procedure IStatement.EnableStatistics
312 >    to enable stats gathering.
313  
314 < 41: TIBLookupComboeditBox: Ensure dataset updated when change selected with the keyboard
396 <    and not just the mouse.
314 > 11. API Version information added as constants to IB.pas
315  
316 < 42. TIBCustomDataset: reopen query if already active when a TIBControlLink is added.
316 > 12. BlobMetaData character set id should now be the same as that given by IColumnMetaData.GetCharSetID
317  
318 < 43. TIBTreeview: new ImageIndexField and SelectedIndexField Property allows the
401 <    image index and selected image index for each node to be set from a database field.
318 > 13. Firebird Character set "NONE" now interpreted as codepage CP_ACP.
319  
320 < 44. TIBExtract: new extract type (etGrantsToUser) for use with eoDatabase. If included
404 <    then database schema includes grants to all users. If not present then the
405 <    only user grants included are those to User PUBLIC.
320 > FBINTF Change Log  version                                      (1.0-0) Tue, 06 Dec 2016 10:33:47 +0000
321  
322 < 45. TIBTreeView: performance improvement. When expanding include both expanded node
408 <    and child nodes in dataset.
322 > 1. Initial Release
323  
410
411 IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
412
413 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
414   changes.
415
416 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
417   Bug could result in truncated multi-byte character set values.
418
419 3. Changes consequential on moving fbintf character set utility functions from
420   IFirebirdAPI to IAttachment.
421
422 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
423
424 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
425   results in autocomplete ignoring prefix text.
426
427 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
428   entering a new name into the text box.
429
430 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
431   Firebird rather than recomputing it.
432
433 8. Property Editor positioning tidy up: All IBX Property editors should now be
434   screen centre. Previously some were "poDesigned" which may be inappropriate
435   for multi monitor desktops.
436
437 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
438
439 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
440    a transaction and always reset the object.
441
442 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
443
444 13. TIBXScript: Allow for override of database filename in Create Database statements.
445
446 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
447    to a gbak format archive.
448
449 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
450
451 16. IBLocaldb: Drop database if error creating an empty database.
452
453 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
454    unless selected node not in current dataset.
455
456 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
457    to TIBCustomService, and IBlocalDB code tidy up.
458
459 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
460    behaviour due to uninitialised variable.
461
462 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
463    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
464
465 21. IBSQL: When Database changed ensure that all resources are freed.
466
467 22. IBCustomDataset: When database changed ensure that queries an unprepared.
468
469 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
470    * Line Wrap on SQL Token boundaries (on user command)
471    * auto-complete table names in drop down list of table names
472    * Double click on tablename or field name adds to SQL text
473
474 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
475
476 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
477    TVariantArray. Seems to avoid memory corruption in Windows (probably a
478    workaround for a problem in fpc 3.0.4 win64).
479
480 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
481
482 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
483
484 IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
485
486 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
487   include remote system name.
488
489 2. TIBExtract: No longer include comment header and COMMIT statement for empty
490   tables when data included in output.
491
492 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
493   and timing information to be written to stdout. This may be used to locate
494   performance bottlenecks.
495
496 4. SQLParser: only call "OnChanging" event handler when value is different.
497
498 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
499
500 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
501   that BindFields is called when the query is next activated. Avoids FieldName
502   not found error.
503
504 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
505   purpose and allows the programmer to define any action they want for Update, Insert
506   or Delete. This may be complex SQL (similar to a Trigger), application specific
507   filtering of updates, or use of statements such as Grant or Revoke instead of
508   normal DML. See User Manual for more information.
509
510 IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
511
512 1. TIBEvents: Fix uninitialised variable that could result in lost events.
513
514 2. TIBExtract: Added support for FB3 "USAGE" privilege.
515
516 3. TIBExtract: data formatted as Charset set "octets" is now output using
517   hexadecimal notation.
518
519 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
520   using a simple XML format.
521
522 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
523   grants to these objects.
524
525 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
526   dependency problems restoring complex databases.
527
528 7. TIBXScript: This component has been restructured to allow for the processing of
529   embedded XML in INSERT statements and to support interactive sources in addition
530   to non-interactive data sources such as files.
531
532 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
533
534 9. TIBXScript: ISQL compatiable Set statements are now supported:
535   SET SQL DIALECT
536   SET TERM
537   SET AUTODDL
538   SET BAIL
539   SET ECHO
540   SET COUNT
541   SET STATS
542   SET NAMES <character set>
543
544 10. IBVersion unit added to hold current IBX Version Number information.
545
546 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
547    and domain definitions.
548
549 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
550    fully supported.
551
552 13. TIBExtract: when a database dump includes data, the generator values are now also set.
553
554 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
555
556 IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
557
558 See also doc/IBX4LazarusGuide.pdf for important information on
559 upgrading to IBX2.
560
561 1. Size property of TIBStringField is now the width in characters of the field
562   and not the byte length. This applies only to multi-byte character sets such
563   as UTF8. The original approach aligned with TStringField. However, the TStringField
564   code is not recognised as a bug and hence this change to align the behaviour.
565   The TStringField change is expected in fpc 3.2.0.
566
567 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
568   true (default) then Size property value saved in the lfm is ignored. Size is
569   always set from the dynamic information read from the database. It is unclear
570   why anyone would want to override this and set Size to false.
571
572 3. ibxscript: should now handle correctly a Case..End statement within a procedure
573   block.
574
575 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
576   exist when an attempt is made to connect to it (run time only) then an attempt
577   is made to create the database.
578
579 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
580   has been successfully created as a result of a call to CreateDatabase or when
581   creating a database after it was found not to exist.
582
583 6.  DBControlGrid: a race condition could result in the wrong row image being
584    written to the cache. This has been avoided by a trip round the message
585    loop before rendering the row image.
586
587 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
588    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
589    known to risk corrupt rendering of row images when the control is first
590    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
591    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
592
593 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
594    a TDateEdit control located on an editor panel.
595
596 9.  TIBExtract: brought up-to-date plus many bug fixes.
597
598 10. DBControlGrid: Removed memory leak when updating rows.
599
600 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
601
602 IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
603
604 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
605   when target codepage is CP_NONE. This is a workaround for
606   http://bugs.freepascal.org/view.php?id=30622.
607
608 2. DBLog option removed from TIBStatisticalService - not supported by server
609   since Firebird 1.5.
610
611 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
612   similar.
613
614 4. IBCodePage: updated mapping between codepages and character id.
615
616 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
617   Firebird. Character sets with a char width of two are not UTF16.
618
619 6. Strings received from the database are now always transliterated into UTF8
620   regardless of the database character set or connection character set. This
621   is for compatibility with the LCL.
622
623 IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
624
625 1. IBBlob: Defer reading of blob until read method called. This avoids having to
626   read in an entire blob just to get the size of the blob. General performance
627   improvement when opening datasets containing blobs.
628
629 2. Clearing a  Blob now sets the corresponding field's modified flag.
630
631 3. IBLookupCombo: When not performing auto-complete, original query sort order
632   is now used.
633
634 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
635   determined.
636
637 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
638
639 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
640   lazarus 1.6.0
641
642 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
643   compilation error.
644
645 IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
646
647 1. No character set specified for connection: when a text blob is retrieved, the
648  character set is determined by looking up the native character set using then
649  Firebird API. Otherwise a text mode blob is assumed to have the same character
650  set as the connection.
651
652 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
653   for Login Dialog returing a change to the database path.
654
655 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
656   to be changed from that given in the TIBDatabase/TIBServer component and for the
657   entered value to be saved on a project specific basis (design time only).
658
659 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
660   column fieldname. If they are the same then it is acts as a look up for the KeyValue
661   Otherwise, it sets the column text to the selected ListField Value.
662
663 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
664   column width.
665
666 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
667   and a case insensitive search is requested.
668
669 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
670   or column ListSource.
671
672 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
673   unprepare) when closing and the text has not changed.
674
675 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
676   Less likely to cause a cursor re-use error on Windows.
677
678 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
679   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
680
681 11. TIBTreeView: Guard against nil destination on record changed
682
683 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
684    string type with the code page set to reflect the returned field encoding after
685    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
686    earlier versions.
687
688 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
689    will now result in transliteration to the code page specified for the Firebird driver
690    if the assigned string has a different code page. FPC 3.0.0 onwards only.
691
692 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
693    is ignored and the lc_ctype value, when the database is opened, is set to align with
694    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
695    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
696    3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
697    the GETACP is used to determine the Windows code page.
698
699 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
700    name used as the lc_ctype when the database was opened. Only valid while the
701    Database is connected.
702
703 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
704    id that corresponds to the DefaultCharSetName.
705
706 IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
707
708 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
709   path is given and database attach fails due to access permission issues on the
710   temp directory or security database, then the attach is retried with "localhost:"
711   prefixing the databasename. This should avoid problems when the database has to
712   be accessed by a local (e.g. classic) server and libfbembed is used.
713
714 2. Windows: revised search order for Firebird DLL:
715     i.   The Firebird Embedded Server in the application Directory.
716     ii.  If the FIREBIRD environment variable is set then the directory this
717          points to is searched for the FB Client DLL and then then underlying
718          "bin" directory.
719     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
720          is used to locate the Firebird installation directory and the underlying
721          "bin" directory is searched for the FB Client DLL.
722     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
723          are searched for the FB Client DLL.
724     v.   The PATH Environment variable is used to search for the FB Client DLL.
725     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
726
727 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
728   See doc/readme.scriptengine and example applications.
729
730 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
731   simplify the use of the embedded firebird server on both Linux and Windows platforms.
732   See dpc/readme.localdatabase and example applications.
733
734 5. IBDynamicGrid: Reordering on column header click should now also work for
735   dynamic columns.
736
737 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
738   between incrementing/decrementing the lock count and signalling the event.
739
740 IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
741
742 1.3.2 was never formally released and only made available as beta copies.
743
744 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
745
746 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
747
748 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
749
750 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
751   i.e. when it is a calculated field
752
753 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
754   This problem was due to a race condition between recalculating row heights and
755   determining which row was selected by the mouse click. The row height calculation
756   is now deferred by an extra trip round the message loop allowing the row to
757   be always calculated on the current grid layout rather than risking it being
758   calculated on the grid layout after the expanded row has been shrunk.
759
760 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
761   Windows.
762
763 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
764   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
765   to be determined at runtime. See doc/readme.charactersets.html.
766
767 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
768   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
769
770 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
771   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
772   1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
773
774   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
775   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
776   implies no truncation.
777
778 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
779
780 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
781   (avoids "Not in Edit Mode" error).
782
783 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
784
785 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
786    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
787
788 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
789
790 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
791
792 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
793
794 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
795
796 IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
797
798 1.   OnCloseUp Event Handler added to TDBLookupProperties
799
800 2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
801     problem with row size when exception is called.
802
803 3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
804
805 4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
806     in a TCustomComboBox and ignores return key if in a TCustomMemo
807
808 5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
809     keyed in i.e. when autocomplete not performed
810
811 6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
812     console mode applications with all LCL required functions (builtin dialogs and
813     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
814     not included in your project, IBX should compile and link with a console mode program.
815     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
816     console mode application or the IDE will automatically assume that your
817     application is GUI based. Instead, you should include the ibexpressconsolemode package.
818
819     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
820     to use the built in dialogs and cursor management. IBDialogs is
821     included by default if "ibexpress" is in your project source's "uses" clause.
822     This should be the case for all projects created through the IDE. This is why
823     you do not want to add the ibexpress package to console mode applications. The
824     ibexpressconsolemode package has been created to allow console mode programs
825     to avoid adding LCL dependencies when using IBX, while still having the
826     unit search paths set up correctly.
827
828     Existing users should check to ensure that the "ibexpress" unit is included in
829     each project's source file (*.lpr).
830
831     You may find that in order for the IDE to recognise that ibexpressconsolemode
832     exists, you have to first open the package in the IDE and then close it. This
833     adds it to the most recently accessed packages list. To make it permanently
834     available, add the package name to lazarus' staticpackages.inc file.
835
836         Thanks to Julio Jiménez for suggesting support of console mode.
837
838 7.   SQL Parser can now accept quoted strings that include new lines
839
840 8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
841     of text on start of edit. This is particularly useful when tabbing to a
842     column and then inserting text.
843
844 9.   New Examples provided for IB Services and ISQLMonitor.
845
846 10. Fix error when writing to blob streams that recorded only the last buffer
847    write in the blob stream. In most cases, this did not cause a problem as the
848    IB Blob Stream is written in a single write. However, with the TDBImage, write
849    of a graphic type prefix was lost which caused a problem when the image could
850        not be automatically recognised.
851
852 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
853    already open" errors due to random numbers used for the cursor name being identical.
854
855 12. IBTable: corrected error that could result in an "Index out of bounds" error
856    when opening the table and the Primary Key is the last or only column in the
857    table. Thanks to Rick Hoover for the fix.
858
859 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
860    of "UTF-8", and update list of available database character sets. Existing
861    users should check the current lc_ctype setting in their applications.
862
863 IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
864
865 1.  Firebird Services: avoid List Index error when opening a service with an
866    empty Params property.
867
868 2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
869    Link now set up in Loaded method - avoids occasional failure to apply
870    SQL markup on initial open.
871
872 3.  "Employees" example performance improvements when scrolling.
873
874 4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
875    TFrame. Force recaching of selected frame to avoid GTK race (results in a
876    random image cached).
877
878 5.  DBControlGrid: Should now react to changes in panel height at run time.
879
880 6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid  
881    even when further rows exist.
882
883 7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
884    always be derived from panel height and setting this property can cause confusion.
885    Note for existing projects: to avoid a missing property error at run time,
886    each form using the DBControlGrid must be opened, updated and saved in the IDE
887    in order to remove the property value from the lfm.
888
889
890 IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
891
892 1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
893    call Prepare before setting parameter values.
894
895 2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
896
897 3.  Code tidyup and more robust handling of dsql information result vector.
898
899 4.  Support for centralised handling of transaction status changes. TIBTransaction
900    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
901    and "AfterExecQuery". The first three are called after the same event is called
902    for an IBCustomDataSet descendent using the Transaction. The fourth is called
903    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
904    enable monitoring of transaction status changes for a given transaction to be
905    handled in a single place. For example, when a change to the dataset occurs
906    an indicator can be set that shows the user that in order to save changes,
907    the transaction should be committed.  Rather than doing this per dataset, this
908    can now be done per transaction.
909
910 5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
911    the dataset is scrolled. However, any changes to the current row are, by default,
912    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
913    have a new property "DataSetCloseAction" that adds automatic posting of changes
914    on dataset close. If this property is set to dcDiscardChanges (default) then the
915    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
916    then IBX will attempt to post any unsaved changes before the dataset is closed
917    (and after the BeforeClose event handler is called). The exception is when the
918    dataset is being closed as a result of a transaction rollback. In this case,
919    no action is taken and any unsaved  changes are discarded. This avoids both
920    unnecessary overhead and the risk that a validation error may occur in the Post
921    raising an exception and thereby preventing a rollback.
922
923 6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
924    In earlier versions, the Display Width was set to the maximum byte width rather than the character
925    width. Display Widths are now corrected by dividing by the max byte width per character.
926    For UTF8 character sets, the byte width is four and hence the Display Width will be
927    the byte width divided by 4. The byte width of each character set is determined
928    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
929    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
930
931 7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
932
933 8.  IBLookupComboEditBox: List should now always be restored to full list when the
934    control loses focus. Default Key press default interval reduced to 200ms.
935
936 9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
937    when dataset rows are less than visible rows.
938
939 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
940    does not exist or DataSet is empty. More responsive on dataset open. New event
941    OnRestorePosition. Column sort disabled if no header row.
942
943 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
944    while dataset state is dsInsert. Avoids posting errors.
945
946 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
947    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
948
949 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
950
951 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
952    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
953    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
954    always "posts" the current record regardless or whether or not it may be more appropriate
955    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
956    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
957    as the first action of the "Post" method and allows the handler to convert the Post
958    into a Cancel if that is the appropriate action on moving to a different row. This is
959    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
960    raised here, but it may still be more appropriate to validate a post and signal
961    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
962
963 15. On Unix derived systems, the Firebird library name can now be given as a colon
964    separated list. Each library name on the list is tried in turn, in left to right
965    order with the first found being used as the firebird library. By default, on Linux,
966    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
967    overidden by the FBLIB environment variable or the OnGetLibraryName function.
968
969    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
970    then it will still attempt to access the database via the Firebird Server and will
971    require a username and password. If only the pathname is given, then the username
972    and password should be omitted and the unix file permissions are used to grant
973    access.
974
975 IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
976
977 1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
978    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
979    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
980    corresponds to a row of the linked DataSource. Any data aware control on the
981    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
982
983 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
984   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
985   takes place during database access. This may be useful when there are performance issues with
986   the change of cursor. Setting the property to false suppresses the change of cursor.
987
988 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
989   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
990   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
991   making all changes permanent immediately rather than when the transaction is explicitly
992   committed.
993
994 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
995   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
996
997 IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
998
999 Development version only.
1000
1001 IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
1002
1003 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
1004   This is typically used during an "OnBeforeOpen" event handler to manipulate the
1005   "Where" and "Having" clauses to implement user specified filters of arbitrary
1006   complexity.
1007
1008 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
1009   three new data aware controls dependent on IBX and which make use of the SQL Parser.
1010   These are:
1011
1012   - TIBLookupComboEditBox
1013   - TIBDynamicGrid
1014   - TIBTreeview
1015
1016   TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
1017   of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
1018   to revise the available list and restrict it to items that are prefixed by the
1019   typed text (either case sensitive or case insensitive). Autoinsert allows a
1020   newly typed entry to be added to the list dataset and included in the available
1021   list items.
1022
1023   TIBDynamicGrid is a TDBGrid descendent that provides for:
1024   - automatic resizing of selected columns to fill the available row length
1025   - automatic positioning and sizing of a "totals" control, typically at the
1026     column footer, on a per column basis.
1027   - DataSet resorting on header row click, sorting the dataset by the selected column.
1028     A second click on the same header cell reversed the sort order.
1029   - Support for a "Panel Editor". That is on clicking the indicator column, the row
1030     is automatically expanded and a panel superimposed on it. The panel can have any
1031     number of child controls, typically data aware controls with the same datasource
1032     as the grid allowing for editing of additional fields and more complex editors.
1033   - Reselection of the same row following resorting.
1034   - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
1035     Its properties are specified on a per column basis and allows for one or more
1036     columns to have their values selected from a list provided by a dataset.
1037     Autocomplete and autoinsert are also available. The existing picklist editor
1038     is unaffected by the extension.
1039
1040   TIBTreeView is a data aware TCustomTreeView.
1041
1042 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
1043   zero scale will no longer return an error. An Int64 will be returned instead.
1044
1045 4. TIBTransaction now has events for Before and After Transaction End and a new function
1046   "GetEndAction" allowing the EndAction to be accessed by these event handlers.
1047
1048 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
1049   repeated multiple times.
1050
1051 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
1052   check used to get in the way of using Stored Procedures, and "Update or Insert"
1053   statements.
1054
1055 7. Insert, Modify and Delete property Editors now support Query Generation from
1056   Stored Procedures.
1057
1058 8. Three new examples illustrate the use of the new IB Controls
1059
1060
1061 IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1062
1063 1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
1064   setting performance. See "readme.field+param.names in the doc folder.(Thanks to
1065   Gabor Boros for reporting this problem and for testing the improvements).
1066
1067 2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case.
1068   See readme.field+param.names in the doc folder.
1069
1070 3. IBX SQL Editors will now automatically add double quotes around column names when the database
1071   dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word.
1072
1073 4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc
1074
1075 5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once"
1076   actions.
1077
1078 6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with
1079   thanks to Yuriy Kopnin for pointing this out).
1080
1081 7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet.
1082
1083 8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types
1084   for both fields and parameter setting.
1085
1086 9. Changes to the Select SQL in an IBCustomDataset descendent should now be
1087   visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property.
1088
1089 10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test,
1090    when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true.
1091
1092 11. TIBTable now has a property editor for "MasterFields"
1093
1094 12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the
1095    GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters.
1096
1097 13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination
1098    of settings is unrecognised. Selecting this radio button has no effect on the settings.
1099  
1100
1101 IBX Change Log  version                 (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000
1102
1103 1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.
1104
1105 IBX Change Log  version          (1.0-4) Thu, 28 Feb 2013 16:56:13 +0000
1106
1107 1. In a TIBCustomDataset descendent, a generator now only sets the value when
1108   it is null. This allows for alternative user defined setting of the generator
1109
1110   Many thanks to Julio Jiménez for this fix
1111
1112 2. An Error Dialog is now displayed in the Lazarus IDE if IBX cannot find the Firebird Library
1113   and suggests that the user may have forgotten to install it.
1114
1115 IBX Change Log  version         (1.0-3) Thu, 22 Nov 2012 22:53:39 +0000
1116
1117 1. Conditional compilation used to limit registration of TIntegerField to
1118   Lazarus versions less than 1.1
1119
1120 2. When a database connection is created, character set is now by default set
1121   to UTF8 (Unix) or to the current Windows code page (Windows) if in the range
1122   1250 to 1254.
1123
1124
1125 IBX Change Log  version     (1.0-2) Tue, 09 Oct 2012 09:10:30 +0100
1126
1127 1. TBookmark change conditional compile changed to > 2.6.2 to match expected availability of change.
1128
1129
1130 IBX Change Log  version    (1.0-1) Sun, 05 Aug 2012 20:00:04 +0100
1131
1132 1. In IBCustomDataset. Changed CurBookmark from string to TBookmark for compiler versions > 2.6.0
1133   Necessary because of TBookmark type and TDataSet.Bookmark property change in fpc 2.7.1
1134
1135 2. IBX now registers TIntegerField as a "No Icon" component. This may be removed if the fpc DB
1136   package is changed to do this (which it should do).
1137
1138 IBX Change Log  version (1.0-0)  Sat, 28 Apr 2012 16:43:00 +0100
1139
1140 1. Add "if active then active := false" to TIBCustomDataset destructor. (Avoid error on database close).
1141
1142 2. Make use of $STATIC conditional in IBSQLMonitor (Needed for FPC 2.6.0 compliance)
1143
1144 3. Database Property Editor: Character Set drop down box now uses "OnChange" rather than "OnCloseUp" to react to changes
1145
1146 4. Property editors should now correctly resize.
1147
1148 5. In IBDatabaseEdit.TestClick, the LoginPrompt is now set to the state of the LoginPrompt Checkbox
1149   (restored original functionality)
1150
1151 6. Under OSX, if IBX fails to load libfbclient.dylib, it will now try and load the firebird
1152   library using the absolute path /Library/Frameworks/Firebird.framework/Firebird.

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