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Revision 303 by tony, Fri Jul 17 22:29:57 2020 UTC

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1 < IBX Change Log  version                (2.3-0) Mon, 16 Apr 2018 09:48:06 +0100
1 > FBINTF Change Log  version          (1.1-6 Build 12214) Fri, 17 Jul 2020 23:10:11 +0100
2  
3 < IMPORTANT: the source code tree has been re-organised for IBX 2.3. Please remove
4 < all previous copies of the IBX source code tree before installing this release.
3 > 1. GetImplementationVersion now correctly returns '3.0' for Firebird 3 API
4 >   with a Firebrid 3 client library.
5  
6 < The IBX packages used by most users have not changed, with one exception. The
7 < IBServices unit has been moved to the package iblegacyServices.lpk. To continue
8 < to use the IBServices unit in your applications, please add the iblegacyServices
9 < to the list of dependencies. To do this, open the Project Inspector and select
10 < Add->New Requirement and select "ibLegacyServices" from the list of available
11 < packages.
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 < 1. New unit IBXServices. The IBXServices unit is a re-architectured update of
14 <   the IBServices unit providing what is intended to be a clearer and easier to
15 <   use set of IB Services components. See Chapter 10 of the IBX User Guide for
16 <   more information and the guide to "Firebird Service Management Using IBX".
17 <   As indicated above, the legacy services components are still available and
18 <   provided in a separate package. There is no need to update working applications
19 <   using the older versions except for an additional package dependency.
12 > 3.  IUtil.FormatStatus now used to format error messages when using new API
13  
14 < 2. The IBX packages and source code tree have been re-organised in an attempt to
22 <   finally get rid of the "duplicate ppu" warnings. This re-organisation should
23 <   not affect existing users. Section 2.3 of the IBX User Guide describes the
24 <   new set of IBX packages.
14 > 4.  Fixed Array SDL: array_desc_scale now correctly encoded as a signed integer.
15  
16 < 3. The ibx/examples/DBAdmin and the ibx/examples/services example have been
17 <   updated to use the new Services API components.
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 < 4. The iblocal package has been updated to use the new Services API components.
23 > 6.  New IFirebirdAPI Calls:
24 >      function GetClientMajor: integer;
25 >      function GetClientMinor: integer;
26  
31 5. procedure SetAutoAdmin; in the new IBX Services this method is now a member of
32   TIBXSecurityService. It had been wrongly classified in the previous version
33   as a per database configuration item. It is global to a server and hence
34   correctly positioned as part of the Security Package. In the DBAdmin example,
35   the setting has moved to the mappings page.
27  
28 < 6. TIBXScript: IgnoreCreateDatabase added. If true then CREATE DATABASE statements
38 <   are ignored.
28 > FBINTF Change Log  version          (1.1-5 Build 12044) Fri, 17 Apr 2020 12:30:01 +0100
29  
30 < 7. TIBDatabase: DropDatabase now ensures that all transactions have been properly
31 <   closed before the database is dropped. Before and After Disconnect event handlers
42 <   are also fired.
30 > 1. ISQLParams.GetHasCaseSensitiveParams added. Returns true if param names are
31 >   case sensitive
32  
33 < 8. TIBTransaction: OnStartTransaction event now fires every time the transaction
45 <   is started and not just the first time.
33 > 2. Single line SQL comments starting with '--' are now recognised by SQL Parser.
34  
35 < 9. IBDataOutput: Use FormatFloat for all performance statistics to avoid platform
36 <   depenendency with comp type.
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 < 10. IBDataOutput: select query data output is now sent to stdout instead of stderr.
43 > 4. FBMessages: removal of unused messages
44  
45 < 11. TIBDatabase: Remove regression. If a user login dialog changes the DatabaseName
53 <    then this is recognised and not ignored.
45 > 5. TFBArray.Create (2nd case): ensure that FFirebirdClientAPI is correctly set.
46  
47 < 12. TIBDataSet, TIBQuery, TIBTable: additions:
56 <    function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
57 <    function GetPerfStatistics(var stats: TPerfCounters): boolean;
58 <    property EnableStatistics: boolean read FEnableStatistics write SetEnableStatistics;
47 > 6. TIBSQLStatementType: SQLSavePoint added to end of enumeration.
48  
49 <    GetRowsAffected returns the affected row counts from the last insert/update/delete
61 <    if EnableStatistics = true then GetPerfStatistics returns the current stats
62 <    counters for the select query. Note: stats accumulate after each fetch from
63 <    the database. To get total query cost after open, call the "Last" method
64 <    and then GetPerfStatistics.
49 > FBINTF Change Log  version          (1.1-4 Build 11515)  Fri, 28 Dec 2018 10:04:19 +0000
50  
51 <    See ibx/examples/consolemode for an example of the use of GetPerfStatistics
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 < 13. TIBExtract: Identity columns DDL. "Start with clause" now correctly encapsulated
55 <    in parenthesises.
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 < 14. TIBExtract: new published property "AlwaysQuoteIdentifiers". If true then in dialect 3
59 <    SQL identifiers are always delimited by double quotes. If false, then they are
60 <    only delimited if the identifier is a reserved word, contains lower case or special
74 <    characters. Set this property to true to retain previous behaviour.
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 < 15. Insert SQL Property Editor. In Insert Returning Clause, Identity column names
77 <    are now inserted in double quotes if not Reserved Words or valid SQL Identifiers.
62 > 4. IColumnMetaData: new method.
63  
64 < 16. TIBDataSet, TIBQuery, TIBTable: addition:
65 <       property MasterDetailDelay: integer {defaults to zero}
64 >   TIBDateTimeFormats = (dfTimestamp, {SQL TIMESTAMP}
65 >                        dfDateTime,   {SQL DATETIME}
66 >                        dfTime);
67  
68 <    When non-zero and the dataset is a detail table referencing a master table
83 <    through either a MasterSource (TIBTable) or a DataSource (TIBDataSet, TIBQuery)
84 <    then a synchronisation delay is added (in milliseconds) between the master
85 <    row changing and the detail dataset being re-opened. If the master dataset
86 <    is scrolled before the delay expires then the delay is reset. This can be used
87 <    to avoid performance overheads when scrolling through a large master dataset.
68 >   function GetDateTimeStrLength(DateTimeFormat: TIBDateTimeFormats): integer;
69  
70 <    Note: uses fptimer and hence requires a thread manager. Under Linux the
71 <    chreads unit must be included in your project. TTimer is not used in order
91 <    to avoid an LCL dependency. Requires FPC 3.0.2 or later.
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 < 17. TIBExtract: User role grants now excluded when etGrantsToUser not specified
74 <    with Extract Option eoDatabase.
73 > 5. Additional argument for IAttachment.PrepareWithNamedParameters -
74 >     CaseSensitiveParams: boolean = false
75  
76 < 18. TIBLookupComboEditBox: Workaround added for https://bugs.freepascal.org/view.php?id=33428
77 <    When a deLayoutChanged event is reported on the ListSource dataset, the
78 <    combobox text is updated. This allows a listsource (detail) to be in a Master/Detail
99 <    relationship with the control's datasource (master).
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 < 19. TIBExtract: Full BigInt value range now supported for Generators/Sequences.
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  
103 20. TIBExtract: Select Procedures (Procedure type 1) now include "SUSPEND;" clause in their
104    stubs. Pedantic fix really, as procedures output in dependency order anyway.
85  
106 21. TIBExtract: Package Headers and Package Bodies are now included in the extracted
107    DDL (Firebird 3 and later only).
86  
87 < 22. TIBLookupComboBox Autocomplete Fixes:
110 <    i. Only appended text is now selected after autocomplete.
111 <    ii. Uppercase keys no longer ignored for autocomplete.
112 <    iii. Retain Prefix case is now honoured correctly.
113 <    iv. When a DataSource is assigned, typing after autocomplete now extends prefix
114 <        before autocomplete performed. i.e. behaviour now the same as when
115 <        no DataSource assigned.
87 > FBINTF Change Log  version                  (1.1-3) Wed, 05 Dec 2018 14:28:10 +0000
88  
89 < 23. TIBXScript: Single Line Comments starting with '--' are now ignored when occurring
118 <    between SQL statements.
89 > 1. DARWIN only syntax error: fix missing semi-colon in TFBClientAPI.LoadIBLibrary
90  
91 < 24. TIBExtract: New published property CaseSensitiveObjectNames. If false (default) then
92 <    ObjectNames are converted to upper case before matching against metadata object
122 <    names, unless the objectname is delimited by double quotes, in which case, the
123 <    double quotes are removed and the remaining string is used (unmodified) to match
124 <    against the metadata object name.
91 > 2. Restrict IsMultiThread check to Unix only for compatibility with
92 >   https://bugs.freepascal.org/view.php?id=30535
93  
94 <    If true then the ObjectName is used as is without modification and matched
95 <    against the metadata object name. No attempt is made to remove double quotes.
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 < 25. TIBExtract: New Extract Types: etDatabaseTriggers and etDDLTriggers. When used
99 <    with eoTrigger, these extract types can be used to select only Database Triggers,
131 <    or DDL Triggers or both. Ignored when etTable or etTrigger included in Extract Types.
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 < 26. TIBXScript: If an exception occurs during the processing of a statement, the
134 <    statement separate character is now reset to the default (';').
101 > 5. New function added to IB.pas
102  
103 < 27. TIBDatabase: Reconnect method added and used by TIBXScript for reconnect.
103 >   function LoadFBLibrary(aLibPathName: string): IFirebirdLibrary
104  
105 < 28. TIBXScript: Transaction is no longer automatically reactivated immediately processing
106 <    a commit or reconnect statement and instead activated only when next SQL statement
107 <    is executed.
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 < 29. TIBSQL.HasField should no longer generate and exception when the field does not exist.
110 > FBINTF Change Log  version               (1.1-2) Mon, 16 Apr 2018 09:30:32 +0100
111  
112 < 30. TIBXScript: case insensitive regex now used when matching statements instead of
113 <    converting statement to upper case.
112 > 1. Firebird.pas: {$OBJECTCHECKS OFF} added to file to avoid runtime error when
113 >   program compiled with -CR command line switch.
114  
115 < 31. TIBExtract: metadata comments now supported. New published property
116 <    IncludeMetaDataComments (default true). If true then metadata comments included
117 <    in extracted DDL. New Extract Object member eoComments. This may be used with
150 <    ExtractObject method to list all metadata comments.
115 > 2. IServiceManager additions (informational):
116 >    function getProtocol: TProtocol;
117 >    function getPortNo: AnsiString;
118  
119 < 32. TIBExtract: ListObjectNames method added.
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 < 33. Updated Database component editor to support additional connection string
125 <    types.
124 > 4. IAttachment addition (informational)
125 >    function GetSecurityDatabase: AnsiString;
126  
127 < IBX Change Log  version  (2.2-0) Wed, 28 Feb 2018 10:57:45 +0000
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 < NOTE: THE LOCATIONS OF SOME OF THE UNIT DIRECTORIES HAS CHANGED FROM IBX 2.1. THIS IS TO
132 < AVOID DUPLICATE PPU WARNINGS. PLEASE REMOVE EARLIER VERSIONS OF IBX BEFORE INSTALLING THIS
161 < RELEASE.
131 > 6. DARWIN: uloadlibrary.inc bug fix. Many thanks to Luigi Naimi for correcting
132 >   the problem.
133  
134 < NOTE: THE DBADMIN DEMO REQUIRES THAT THE MemDSLaz PACKAGE IS INSTALLED IN THE LAZARUS IDE.
134 > 7. Type change: "TPerfCounters = array[TPerfStats] of Int64". Note "Int64"
135 >   replaces deprecated "comp" type.
136  
137 < 1. IBExtract: Identity columns - add additional check for null column for generator name.
137 > 10. Testsuite Test10 updated to include thread synchronisation for event reporting.
138  
139 < 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
168 <   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
169 <   information). However, this is also a very useful mechanism for returning updated computed by
170 <   column values. Values returned as a result of executing an Insert or Update statement
171 <   replace existing values in the current row for each corresponding column.
139 > 11. URL Connection Strings: inet4 and inet6 now recognised.
140  
141 <   Previously, if a dataset's select query included read only (computed by) fields then
174 <   an automatic row refresh was performed after an insert or update query had been processed,
175 <   irrespective of the setting of the "ForcedUpdates" property. This has changed such
176 <   that an automatic refresh is no longer performed if an insert or update query contains
177 <   a returning clause that updates one or more fields on the current row. A full row
178 <   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
179 <   field values and the select query contains read only fields. Use of Insert/update
180 <   returning should be significantly more efficient than executing a refresh query.
141 > 12. IBUtils: Parse and Make Connect String now recognise URL style loopback syntax.
142  
143 <   This behaviour change is intended to be backwards compatible and there should be no need to change
183 <   existing programs, other than to improve performance by using the new capability.
143 > 13. IAttachment.CharSetName2CharSetID is now performed case insensitive.
144  
185 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
186   they are called when the dataset row is being deleted, there is no value in
187   updating the current record from the query result. Instead, a new event handler
188   "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
189   an OnDeleteReturning event handler is provided then it is called with the IResults returned
190   by the query. The event handler can then interrogate the query results and
191   perform whatever action is necessary. For example to confirm, to the user,
192   the deletion of a row with the returned values.
145  
146 < 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
195 <   any Computed By or Identity Columns. The IBTables example has been updated to
196 <   illustrate the computation of the employee Full Name on update.
146 > FBINTF Change Log  version (1.1-1) Tue, 27 Feb 2018 16:51:16 +0000
147  
148 < 5. TIBTable: The GeneratorField property is now published.
148 > 1. IBUtils.QuoteIdentifierIfNeeded: Add check for space character.
149  
150 < 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
151 <   When InsertSQL is generated, the Identity columns are not included in the list of values to
152 <   be inserted. A RETURNING clause is added to the insert statement to return the value of
203 <   each Identity column after the insert is executed.
150 > 2. IAttachment: add two new methods
151 >     function HasDefaultCharSet: boolean;
152 >     function GetDefaultCharSetID: integer;
153  
154 < 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
155 <   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
156 <   Insert..Returning clause.
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 < 8. TIBGenerator: small performance improvement by not preparing query each time
210 <   a new value is generated.
159 > 3. Avoid exception when a text blob is a stored procedure parameter.
160  
161 < 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
161 > 4. Update test suite to include a test for a stored proc returning a text blob.
162  
163 < 10. Property editors will now sync table name to a System Table when "Include System
164 <    Tables" is selected and the query is for a System Table.
163 > 5. IAttachment: add
164 >      function GetRemoteProtocol: AnsiString;
165 >      function GetODSMajorVersion: integer;
166 >      function GetODSMinorVersion: integer;
167 >      function GetAuthenticationMethod: AnsiString;
168  
169 < 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
170 <    values are no longer converted to milliseconds from TDateTime and then back again
219 <    to TDateTime (the conversion to milliseconds is the default TDataset approach).
169 >   These results are cached when the connection is opened and hence do not
170 >   require a database lookup.
171  
172 < 12. Property Editors handling of Stored Procedures.
173 <    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
223 <      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
224 <      query).
225 <    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
172 > 6. IAttachment: add "function GetConnectString: AnsiString;" This returns the
173 >   connect string used to create/connect to the database.
174  
175 < 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
176 <    can be used to select a package. If non-empty, the stored procedure name is
177 <    expected to be a stored procedure defined in the specified package and the
178 <    generated SQL will be as required for a stored procedure located in a package.
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 < 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
233 <    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
234 <    which a stored procedure can be selected. With no package name selected, non-package
235 <    stored procedures are listed.
181 > 8. Update Test 1 to test 5, 6 and 7 above.
182  
183 < 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
238 <    for password on reconnect.
183 > 9. IBUtils code tidy up.
184  
185 < 16. TIBDatabase: use IAttachment for connection default character set id, code page
186 <    and character set name.
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 < 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
244 <    DB info lookups"
190 > 11. DBInformation: support added for isc_info_active_tran_count and isc_info_creation_date.
191  
192 < 18. IBExtract: now supports DDL Triggers and Grants to DDL objects.
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 < 19. Add a property Editor for TIBUpdate.RefreshSQL.
197 > 13. DBInformation: Support for fb_info_pages_used and fb_info_pages_free added, plus
198 >    test suite updated.
199  
200 < 20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
201 <    parameters. This stops an exception being raised when the field cannot be
252 <    located in the record buffer.
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 < 21. Property Editors now automatically include System Tables when opened and when the query table
204 <    is a System Table.
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 < 22. IBServices: SQRB and SRB buffers are now reset when service query throws an exception.
258 <    This avoids errors due to a stale SQRB or SRB being used for the next query.
207 > FBINTF Change Log  version                             (1.1-0) Sun, 07 Jan 2018 15:20:02 +0000
208  
209 < 23. IBServices: Service attach parameters now include "expected_db". This is used to
210 <    add the SPB item isc_spb_expected_db. This names a database using
262 <    an alternative Security Database (FB3 onwards) and allows (e.g. backup/restore) using such a
263 <    database. examples/services re-written to illustrate use of "expected_db".
209 > 1. Fix issues with setting SQL Param values using SetAsString with Numeric types.
210 >   Scale is no longer ignored.
211  
212 < 24. IBServices: TIBControlAndQueryService.WriteNextChunk no longer ignores isc_info_svc_timeout.
213 <    This avoids truncated backups when the server returns a timeout (busy) response.
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 < 25. TIBDatabase: isc_dpb_page_size now supported as a database parameter when using TIBDatabase.CreateDatabase.
217 > 3. Lookup character set name by codepage amended to ensure that CP_UTF8 returns
218 >   UTF8 and not UNICODE_FSS.
219  
220 < 26. TIBDatabase: DatabaseName property may now be prefixed by $TEMP$ or $DATADIR$ for local
221 <    databasenames. These are respectively expanded to the local system's temp directory
222 <    (including trailing delimiter) or to a prescribed data directory (including
223 <    trailing delimiter). Under Unix systems the data directory is a hidden directory
274 <    in the user's home directory. The hidden directory name is either the string returned
275 <    from the SysUtils "Vendor Name" or "IBX" if empty. In either case prefixed by a '.'.
276 <    Under Windows, the directory is the same as the Data Directory as decribed
277 <    above but instead prefixed by the User's application data path. These may be
278 <    used to improve application portability for Personal Databases.
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 < 27. TIBTable: FieldDefs property is no longer published. Due to the use of TIBFieldDef
226 <    this has not worked for a long time and is not useful either. FieldDefs should be
227 <    managed using the Fields Editor as with any other dataset. To access the fields
228 <    editor for a TIBTable component, double click on the component. The fields editor
284 <    is then displayed.
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 < 28. TIBDatabaseInfo: new properties/function
231 <     * DateDBCreated (returns date/time database created)
288 <     * TransactionCount (returns no. of active transactions)
289 <     * GetDatabasePage(PageNo: integer) (returns contents of specified database page - SYSDBA only).
290 <     * PagesFree (Firebird 3 or later)
291 <     * PagesUsed (Firebird 3 or later)
292 <     * Encrypted (returns true if database encrypted. (Firebird 3.0.3 or later only)
293 <     * EncryptionKeyName (returns the name of the encryption key if any (Firebird 3.0.3 or later only)
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 < 29. IBServices classes now provided the decoded release number in the (array) property ServerVersionNo.
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 < 30. TIBSecurityService now supports display/modification of the User Admin Role (Firebird 2.5 and later).
236 > 8. FB30Client: avoid always using "StartMultiple" when only a single database attachment.
237  
238 < 31. TIBConfigService now has a procedure SetAutoAdmin(Value: boolean) to enable/disable
239 <    the automtic mapping of privileged OS users to the RDB$ADMIN role (Firebird 2.5 and later).
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 < 32. TIBBackupService: New Option - NoDBTriggers equivalent to -nodbtriggers switch introduced
303 <    in the gbak utility at V.2.1 to prevent database-level and transaction-level triggers from
304 <    firing during backup and restore.
243 > 10. Testsuite: Ensure consistent UTF-8 output on Windows console.
244  
245 < 33. Both TIBBackupService and TIBRestoreService now support backup/restore statistics options
307 <    for verbose output using the new property "StatisticsRequested".
308 <    see https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-util-gbak.html#rnfb25-util-gbakstats
245 > 11. Testsuite: Update Windows script to include FPC 3.0.4 in search path.
246  
247 < 34. TIBRestoreService: now supports new options RestoreMetaDataOnly (Firebird 2.5 and later).
247 > 12. FB30Statement: Protect call to "Move" and avoid calling with a nil pointer
248  
249 < 35. TIBOnlineValidationService component added to the IBServices and the "Firebird Admin"
250 <    palette. This uses the online validation feature added in Firebird 2.5. The
251 <    services's properties enable inclusion/exclusion of tables and indexes using
252 <    regular expressions. See.
316 <    https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-apiods-api.html#rnfb25-apiods-api-onlinevalidation
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 < 36. IBServices: procedure TIBConfigService.SetNoLinger added to set no linger
319 <    option on a database.
254 > 14. FB30Statement/FB25Statement: Set SQLParam "modified" when string value set.
255  
256 < 37. TIBCustomService: Assign method implemented to allow copying of service login
257 <    context between service API components. "Detach" method now only detaches
323 <    service when last reference to the service interface detaches. Tidy up of
324 <    code for SetActive and Attach methods including password hiding.
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 < 38. TIBDatabase: new properties: AuthenticationMethod and RemoteProtocol. Read only
260 <    and used to determine the auth method and protocol used for the connection.
259 > 16. FBAttachment: Allow for WideString and UnicodeString parameters in an array
260 >    of const passed to IAttachment.OpenCursor, etc.
261  
329 39. TIBDatabase: ensure that SQLDialect setting is used when creating a database using
330    a Create Database Statement generated by IBX.
262  
263 < 40. All IBServices now have an additional published property "PortNo". This may
333 <    be set to a non-standard port number when necessary. If zero then the default
334 <    port number is used.
263 > FBINTF Change Log  version             (1.0-2) Sat, 04 Mar 2017 14:43:56 +0000
264  
265 < 41: TIBLookupComboeditBox: Ensure dataset updated when change selected with the keyboard
337 <    and not just the mouse.
265 > 1. Change syntax to Mode Delphi
266  
267 < 42. TIBCustomDataset: reopen query if already active when a TIBControlLink is added.
267 > 2. Change all uses of string type to explicit AnsiString in order to ensure
268 >   compatibility between Delphi and FPC.
269  
270 < 43. TIBTreeview: new ImageIndexField and SelectedIndexField Property allows the
271 <    image index and selected image index for each node to be set from a database field.
270 > 3. Various syntax changes to ensure Delphi and FPC compilation including GUIDs
271 >   defined for each interface.
272  
273 < 44. TIBExtract: new extract type (etGrantsToUser) for use with eoDatabase. If included
345 <    then database schema includes grants to all users. If not present then the
346 <    only user grants included are those to User PUBLIC.
273 > 4. Generics syntax variations for Delphi added
274  
275 < 45. TIBTreeView: performance improvement. When expanding include both expanded node
276 <    and child nodes in dataset.
275 > 5. PChar replaced with PByte expect where an actual string is being referenced,
276 >   where PAnsiChar is used instead.
277  
278 + 6. Review of type definitions in IBExternals to ensure Delphi compatibility
279  
280 < IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
280 > 7. Testsuite updated for Delphi
281  
282 < 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
355 <   changes.
282 > FBINTF Change Log  version            (1.0-1) Fri, 24 Feb 2017 12:17:57 +0000
283  
284 < 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
285 <   Bug could result in truncated multi-byte character set values.
284 > 1. Limit maximum Blob segment read/write to MaxuShort. Avoids data loss with
285 >   large blobs and the FB3 API.
286  
287 < 3. Changes consequential on moving fbintf character set utility functions from
288 <   IFirebirdAPI to IAttachment.
287 > 2. Update Event Handling algorithm to avoid looping due to recreation of the
288 >   event block.
289  
290 < 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
290 > 3. Avoid invalid XSQLDA error when the only parameter is updated to null
291  
292 < 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
293 <   results in autocomplete ignoring prefix text.
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 < 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
369 <   entering a new name into the text box.
297 > 5. IBUtils: List of reserved words brought up-to-date
298  
299 < 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
372 <   Firebird rather than recomputing it.
299 > 6. Add ISQL style performance statistics collection to IStatement
300  
301 < 8. Property Editor positioning tidy up: All IBX Property editors should now be
302 <   screen centre. Previously some were "poDesigned" which may be inappropriate
376 <   for multi monitor desktops.
301 > 7. Add IFirebirdAPI.CreateDatabase variant to allow execution of user provided
302 >   CREATE DATABASE statement.
303  
304 < 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
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 < 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
308 <    a transaction and always reset the object.
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 < 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
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 < 13. TIBXScript: Allow for override of database filename in Create Database statements.
314 > 11. API Version information added as constants to IB.pas
315  
316 < 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
388 <    to a gbak format archive.
316 > 12. BlobMetaData character set id should now be the same as that given by IColumnMetaData.GetCharSetID
317  
318 < 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
318 > 13. Firebird Character set "NONE" now interpreted as codepage CP_ACP.
319  
320 < 16. IBLocaldb: Drop database if error creating an empty database.
320 > FBINTF Change Log  version                                      (1.0-0) Tue, 06 Dec 2016 10:33:47 +0000
321  
322 < 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
395 <    unless selected node not in current dataset.
322 > 1. Initial Release
323  
397 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
398    to TIBCustomService, and IBlocalDB code tidy up.
399
400 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
401    behaviour due to uninitialised variable.
402
403 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
404    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
405
406 21. IBSQL: When Database changed ensure that all resources are freed.
407
408 22. IBCustomDataset: When database changed ensure that queries an unprepared.
409
410 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
411    * Line Wrap on SQL Token boundaries (on user command)
412    * auto-complete table names in drop down list of table names
413    * Double click on tablename or field name adds to SQL text
414
415 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
416
417 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
418    TVariantArray. Seems to avoid memory corruption in Windows (probably a
419    workaround for a problem in fpc 3.0.4 win64).
420
421 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
422
423 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
424
425 IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
426
427 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
428   include remote system name.
429
430 2. TIBExtract: No longer include comment header and COMMIT statement for empty
431   tables when data included in output.
432
433 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
434   and timing information to be written to stdout. This may be used to locate
435   performance bottlenecks.
436
437 4. SQLParser: only call "OnChanging" event handler when value is different.
438
439 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
440
441 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
442   that BindFields is called when the query is next activated. Avoids FieldName
443   not found error.
444
445 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
446   purpose and allows the programmer to define any action they want for Update, Insert
447   or Delete. This may be complex SQL (similar to a Trigger), application specific
448   filtering of updates, or use of statements such as Grant or Revoke instead of
449   normal DML. See User Manual for more information.
450
451 IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
452
453 1. TIBEvents: Fix uninitialised variable that could result in lost events.
454
455 2. TIBExtract: Added support for FB3 "USAGE" privilege.
456
457 3. TIBExtract: data formatted as Charset set "octets" is now output using
458   hexadecimal notation.
459
460 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
461   using a simple XML format.
462
463 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
464   grants to these objects.
465
466 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
467   dependency problems restoring complex databases.
468
469 7. TIBXScript: This component has been restructured to allow for the processing of
470   embedded XML in INSERT statements and to support interactive sources in addition
471   to non-interactive data sources such as files.
472
473 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
474
475 9. TIBXScript: ISQL compatiable Set statements are now supported:
476   SET SQL DIALECT
477   SET TERM
478   SET AUTODDL
479   SET BAIL
480   SET ECHO
481   SET COUNT
482   SET STATS
483   SET NAMES <character set>
484
485 10. IBVersion unit added to hold current IBX Version Number information.
486
487 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
488    and domain definitions.
489
490 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
491    fully supported.
492
493 13. TIBExtract: when a database dump includes data, the generator values are now also set.
494
495 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
496
497 IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
498
499 See also doc/IBX4LazarusGuide.pdf for important information on
500 upgrading to IBX2.
501
502 1. Size property of TIBStringField is now the width in characters of the field
503   and not the byte length. This applies only to multi-byte character sets such
504   as UTF8. The original approach aligned with TStringField. However, the TStringField
505   code is not recognised as a bug and hence this change to align the behaviour.
506   The TStringField change is expected in fpc 3.2.0.
507
508 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
509   true (default) then Size property value saved in the lfm is ignored. Size is
510   always set from the dynamic information read from the database. It is unclear
511   why anyone would want to override this and set Size to false.
512
513 3. ibxscript: should now handle correctly a Case..End statement within a procedure
514   block.
515
516 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
517   exist when an attempt is made to connect to it (run time only) then an attempt
518   is made to create the database.
519
520 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
521   has been successfully created as a result of a call to CreateDatabase or when
522   creating a database after it was found not to exist.
523
524 6.  DBControlGrid: a race condition could result in the wrong row image being
525    written to the cache. This has been avoided by a trip round the message
526    loop before rendering the row image.
527
528 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
529    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
530    known to risk corrupt rendering of row images when the control is first
531    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
532    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
533
534 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
535    a TDateEdit control located on an editor panel.
536
537 9.  TIBExtract: brought up-to-date plus many bug fixes.
538
539 10. DBControlGrid: Removed memory leak when updating rows.
540
541 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
542
543 IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
544
545 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
546   when target codepage is CP_NONE. This is a workaround for
547   http://bugs.freepascal.org/view.php?id=30622.
548
549 2. DBLog option removed from TIBStatisticalService - not supported by server
550   since Firebird 1.5.
551
552 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
553   similar.
554
555 4. IBCodePage: updated mapping between codepages and character id.
556
557 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
558   Firebird. Character sets with a char width of two are not UTF16.
559
560 6. Strings received from the database are now always transliterated into UTF8
561   regardless of the database character set or connection character set. This
562   is for compatibility with the LCL.
563
564 IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
565
566 1. IBBlob: Defer reading of blob until read method called. This avoids having to
567   read in an entire blob just to get the size of the blob. General performance
568   improvement when opening datasets containing blobs.
569
570 2. Clearing a  Blob now sets the corresponding field's modified flag.
571
572 3. IBLookupCombo: When not performing auto-complete, original query sort order
573   is now used.
574
575 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
576   determined.
577
578 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
579
580 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
581   lazarus 1.6.0
582
583 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
584   compilation error.
585
586 IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
587
588 1. No character set specified for connection: when a text blob is retrieved, the
589  character set is determined by looking up the native character set using then
590  Firebird API. Otherwise a text mode blob is assumed to have the same character
591  set as the connection.
592
593 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
594   for Login Dialog returing a change to the database path.
595
596 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
597   to be changed from that given in the TIBDatabase/TIBServer component and for the
598   entered value to be saved on a project specific basis (design time only).
599
600 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
601   column fieldname. If they are the same then it is acts as a look up for the KeyValue
602   Otherwise, it sets the column text to the selected ListField Value.
603
604 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
605   column width.
606
607 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
608   and a case insensitive search is requested.
609
610 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
611   or column ListSource.
612
613 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
614   unprepare) when closing and the text has not changed.
615
616 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
617   Less likely to cause a cursor re-use error on Windows.
618
619 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
620   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
621
622 11. TIBTreeView: Guard against nil destination on record changed
623
624 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
625    string type with the code page set to reflect the returned field encoding after
626    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
627    earlier versions.
628
629 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
630    will now result in transliteration to the code page specified for the Firebird driver
631    if the assigned string has a different code page. FPC 3.0.0 onwards only.
632
633 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
634    is ignored and the lc_ctype value, when the database is opened, is set to align with
635    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
636    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
637    3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
638    the GETACP is used to determine the Windows code page.
639
640 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
641    name used as the lc_ctype when the database was opened. Only valid while the
642    Database is connected.
643
644 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
645    id that corresponds to the DefaultCharSetName.
646
647 IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
648
649 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
650   path is given and database attach fails due to access permission issues on the
651   temp directory or security database, then the attach is retried with "localhost:"
652   prefixing the databasename. This should avoid problems when the database has to
653   be accessed by a local (e.g. classic) server and libfbembed is used.
654
655 2. Windows: revised search order for Firebird DLL:
656     i.   The Firebird Embedded Server in the application Directory.
657     ii.  If the FIREBIRD environment variable is set then the directory this
658          points to is searched for the FB Client DLL and then then underlying
659          "bin" directory.
660     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
661          is used to locate the Firebird installation directory and the underlying
662          "bin" directory is searched for the FB Client DLL.
663     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
664          are searched for the FB Client DLL.
665     v.   The PATH Environment variable is used to search for the FB Client DLL.
666     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
667
668 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
669   See doc/readme.scriptengine and example applications.
670
671 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
672   simplify the use of the embedded firebird server on both Linux and Windows platforms.
673   See dpc/readme.localdatabase and example applications.
674
675 5. IBDynamicGrid: Reordering on column header click should now also work for
676   dynamic columns.
677
678 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
679   between incrementing/decrementing the lock count and signalling the event.
680
681 IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
682
683 1.3.2 was never formally released and only made available as beta copies.
684
685 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
686
687 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
688
689 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
690
691 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
692   i.e. when it is a calculated field
693
694 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
695   This problem was due to a race condition between recalculating row heights and
696   determining which row was selected by the mouse click. The row height calculation
697   is now deferred by an extra trip round the message loop allowing the row to
698   be always calculated on the current grid layout rather than risking it being
699   calculated on the grid layout after the expanded row has been shrunk.
700
701 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
702   Windows.
703
704 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
705   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
706   to be determined at runtime. See doc/readme.charactersets.html.
707
708 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
709   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
710
711 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
712   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
713   1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
714
715   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
716   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
717   implies no truncation.
718
719 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
720
721 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
722   (avoids "Not in Edit Mode" error).
723
724 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
725
726 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
727    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
728
729 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
730
731 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
732
733 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
734
735 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
736
737 IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
738
739 1.   OnCloseUp Event Handler added to TDBLookupProperties
740
741 2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
742     problem with row size when exception is called.
743
744 3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
745
746 4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
747     in a TCustomComboBox and ignores return key if in a TCustomMemo
748
749 5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
750     keyed in i.e. when autocomplete not performed
751
752 6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
753     console mode applications with all LCL required functions (builtin dialogs and
754     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
755     not included in your project, IBX should compile and link with a console mode program.
756     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
757     console mode application or the IDE will automatically assume that your
758     application is GUI based. Instead, you should include the ibexpressconsolemode package.
759
760     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
761     to use the built in dialogs and cursor management. IBDialogs is
762     included by default if "ibexpress" is in your project source's "uses" clause.
763     This should be the case for all projects created through the IDE. This is why
764     you do not want to add the ibexpress package to console mode applications. The
765     ibexpressconsolemode package has been created to allow console mode programs
766     to avoid adding LCL dependencies when using IBX, while still having the
767     unit search paths set up correctly.
768
769     Existing users should check to ensure that the "ibexpress" unit is included in
770     each project's source file (*.lpr).
771
772     You may find that in order for the IDE to recognise that ibexpressconsolemode
773     exists, you have to first open the package in the IDE and then close it. This
774     adds it to the most recently accessed packages list. To make it permanently
775     available, add the package name to lazarus' staticpackages.inc file.
776
777         Thanks to Julio Jiménez for suggesting support of console mode.
778
779 7.   SQL Parser can now accept quoted strings that include new lines
780
781 8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
782     of text on start of edit. This is particularly useful when tabbing to a
783     column and then inserting text.
784
785 9.   New Examples provided for IB Services and ISQLMonitor.
786
787 10. Fix error when writing to blob streams that recorded only the last buffer
788    write in the blob stream. In most cases, this did not cause a problem as the
789    IB Blob Stream is written in a single write. However, with the TDBImage, write
790    of a graphic type prefix was lost which caused a problem when the image could
791        not be automatically recognised.
792
793 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
794    already open" errors due to random numbers used for the cursor name being identical.
795
796 12. IBTable: corrected error that could result in an "Index out of bounds" error
797    when opening the table and the Primary Key is the last or only column in the
798    table. Thanks to Rick Hoover for the fix.
799
800 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
801    of "UTF-8", and update list of available database character sets. Existing
802    users should check the current lc_ctype setting in their applications.
803
804 IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
805
806 1.  Firebird Services: avoid List Index error when opening a service with an
807    empty Params property.
808
809 2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
810    Link now set up in Loaded method - avoids occasional failure to apply
811    SQL markup on initial open.
812
813 3.  "Employees" example performance improvements when scrolling.
814
815 4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
816    TFrame. Force recaching of selected frame to avoid GTK race (results in a
817    random image cached).
818
819 5.  DBControlGrid: Should now react to changes in panel height at run time.
820
821 6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid  
822    even when further rows exist.
823
824 7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
825    always be derived from panel height and setting this property can cause confusion.
826    Note for existing projects: to avoid a missing property error at run time,
827    each form using the DBControlGrid must be opened, updated and saved in the IDE
828    in order to remove the property value from the lfm.
829
830
831 IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
832
833 1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
834    call Prepare before setting parameter values.
835
836 2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
837
838 3.  Code tidyup and more robust handling of dsql information result vector.
839
840 4.  Support for centralised handling of transaction status changes. TIBTransaction
841    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
842    and "AfterExecQuery". The first three are called after the same event is called
843    for an IBCustomDataSet descendent using the Transaction. The fourth is called
844    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
845    enable monitoring of transaction status changes for a given transaction to be
846    handled in a single place. For example, when a change to the dataset occurs
847    an indicator can be set that shows the user that in order to save changes,
848    the transaction should be committed.  Rather than doing this per dataset, this
849    can now be done per transaction.
850
851 5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
852    the dataset is scrolled. However, any changes to the current row are, by default,
853    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
854    have a new property "DataSetCloseAction" that adds automatic posting of changes
855    on dataset close. If this property is set to dcDiscardChanges (default) then the
856    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
857    then IBX will attempt to post any unsaved changes before the dataset is closed
858    (and after the BeforeClose event handler is called). The exception is when the
859    dataset is being closed as a result of a transaction rollback. In this case,
860    no action is taken and any unsaved  changes are discarded. This avoids both
861    unnecessary overhead and the risk that a validation error may occur in the Post
862    raising an exception and thereby preventing a rollback.
863
864 6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
865    In earlier versions, the Display Width was set to the maximum byte width rather than the character
866    width. Display Widths are now corrected by dividing by the max byte width per character.
867    For UTF8 character sets, the byte width is four and hence the Display Width will be
868    the byte width divided by 4. The byte width of each character set is determined
869    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
870    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
871
872 7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
873
874 8.  IBLookupComboEditBox: List should now always be restored to full list when the
875    control loses focus. Default Key press default interval reduced to 200ms.
876
877 9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
878    when dataset rows are less than visible rows.
879
880 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
881    does not exist or DataSet is empty. More responsive on dataset open. New event
882    OnRestorePosition. Column sort disabled if no header row.
883
884 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
885    while dataset state is dsInsert. Avoids posting errors.
886
887 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
888    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
889
890 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
891
892 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
893    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
894    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
895    always "posts" the current record regardless or whether or not it may be more appropriate
896    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
897    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
898    as the first action of the "Post" method and allows the handler to convert the Post
899    into a Cancel if that is the appropriate action on moving to a different row. This is
900    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
901    raised here, but it may still be more appropriate to validate a post and signal
902    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
903
904 15. On Unix derived systems, the Firebird library name can now be given as a colon
905    separated list. Each library name on the list is tried in turn, in left to right
906    order with the first found being used as the firebird library. By default, on Linux,
907    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
908    overidden by the FBLIB environment variable or the OnGetLibraryName function.
909
910    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
911    then it will still attempt to access the database via the Firebird Server and will
912    require a username and password. If only the pathname is given, then the username
913    and password should be omitted and the unix file permissions are used to grant
914    access.
915
916 IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
917
918 1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
919    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
920    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
921    corresponds to a row of the linked DataSource. Any data aware control on the
922    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
923
924 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
925   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
926   takes place during database access. This may be useful when there are performance issues with
927   the change of cursor. Setting the property to false suppresses the change of cursor.
928
929 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
930   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
931   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
932   making all changes permanent immediately rather than when the transaction is explicitly
933   committed.
934
935 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
936   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
937
938 IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
939
940 Development version only.
941
942 IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
943
944 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
945   This is typically used during an "OnBeforeOpen" event handler to manipulate the
946   "Where" and "Having" clauses to implement user specified filters of arbitrary
947   complexity.
948
949 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
950   three new data aware controls dependent on IBX and which make use of the SQL Parser.
951   These are:
952
953   - TIBLookupComboEditBox
954   - TIBDynamicGrid
955   - TIBTreeview
956
957   TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
958   of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
959   to revise the available list and restrict it to items that are prefixed by the
960   typed text (either case sensitive or case insensitive). Autoinsert allows a
961   newly typed entry to be added to the list dataset and included in the available
962   list items.
963
964   TIBDynamicGrid is a TDBGrid descendent that provides for:
965   - automatic resizing of selected columns to fill the available row length
966   - automatic positioning and sizing of a "totals" control, typically at the
967     column footer, on a per column basis.
968   - DataSet resorting on header row click, sorting the dataset by the selected column.
969     A second click on the same header cell reversed the sort order.
970   - Support for a "Panel Editor". That is on clicking the indicator column, the row
971     is automatically expanded and a panel superimposed on it. The panel can have any
972     number of child controls, typically data aware controls with the same datasource
973     as the grid allowing for editing of additional fields and more complex editors.
974   - Reselection of the same row following resorting.
975   - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
976     Its properties are specified on a per column basis and allows for one or more
977     columns to have their values selected from a list provided by a dataset.
978     Autocomplete and autoinsert are also available. The existing picklist editor
979     is unaffected by the extension.
980
981   TIBTreeView is a data aware TCustomTreeView.
982
983 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
984   zero scale will no longer return an error. An Int64 will be returned instead.
985
986 4. TIBTransaction now has events for Before and After Transaction End and a new function
987   "GetEndAction" allowing the EndAction to be accessed by these event handlers.
988
989 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
990   repeated multiple times.
991
992 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
993   check used to get in the way of using Stored Procedures, and "Update or Insert"
994   statements.
995
996 7. Insert, Modify and Delete property Editors now support Query Generation from
997   Stored Procedures.
998
999 8. Three new examples illustrate the use of the new IB Controls
1000
1001
1002 IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1003
1004 1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
1005   setting performance. See "readme.field+param.names in the doc folder.(Thanks to
1006   Gabor Boros for reporting this problem and for testing the improvements).
1007
1008 2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case.
1009   See readme.field+param.names in the doc folder.
1010
1011 3. IBX SQL Editors will now automatically add double quotes around column names when the database
1012   dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word.
1013
1014 4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc
1015
1016 5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once"
1017   actions.
1018
1019 6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with
1020   thanks to Yuriy Kopnin for pointing this out).
1021
1022 7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet.
1023
1024 8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types
1025   for both fields and parameter setting.
1026
1027 9. Changes to the Select SQL in an IBCustomDataset descendent should now be
1028   visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property.
1029
1030 10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test,
1031    when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true.
1032
1033 11. TIBTable now has a property editor for "MasterFields"
1034
1035 12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the
1036    GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters.
1037
1038 13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination
1039    of settings is unrecognised. Selecting this radio button has no effect on the settings.
1040  
1041
1042 IBX Change Log  version                 (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000
1043
1044 1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.
1045
1046 IBX Change Log  version          (1.0-4) Thu, 28 Feb 2013 16:56:13 +0000
1047
1048 1. In a TIBCustomDataset descendent, a generator now only sets the value when
1049   it is null. This allows for alternative user defined setting of the generator
1050
1051   Many thanks to Julio Jiménez for this fix
1052
1053 2. An Error Dialog is now displayed in the Lazarus IDE if IBX cannot find the Firebird Library
1054   and suggests that the user may have forgotten to install it.
1055
1056 IBX Change Log  version         (1.0-3) Thu, 22 Nov 2012 22:53:39 +0000
1057
1058 1. Conditional compilation used to limit registration of TIntegerField to
1059   Lazarus versions less than 1.1
1060
1061 2. When a database connection is created, character set is now by default set
1062   to UTF8 (Unix) or to the current Windows code page (Windows) if in the range
1063   1250 to 1254.
1064
1065
1066 IBX Change Log  version     (1.0-2) Tue, 09 Oct 2012 09:10:30 +0100
1067
1068 1. TBookmark change conditional compile changed to > 2.6.2 to match expected availability of change.
1069
1070
1071 IBX Change Log  version    (1.0-1) Sun, 05 Aug 2012 20:00:04 +0100
1072
1073 1. In IBCustomDataset. Changed CurBookmark from string to TBookmark for compiler versions > 2.6.0
1074   Necessary because of TBookmark type and TDataSet.Bookmark property change in fpc 2.7.1
1075
1076 2. IBX now registers TIntegerField as a "No Icon" component. This may be removed if the fpc DB
1077   package is changed to do this (which it should do).
1078
1079 IBX Change Log  version (1.0-0)  Sat, 28 Apr 2012 16:43:00 +0100
1080
1081 1. Add "if active then active := false" to TIBCustomDataset destructor. (Avoid error on database close).
1082
1083 2. Make use of $STATIC conditional in IBSQLMonitor (Needed for FPC 2.6.0 compliance)
1084
1085 3. Database Property Editor: Character Set drop down box now uses "OnChange" rather than "OnCloseUp" to react to changes
1086
1087 4. Property editors should now correctly resize.
1088
1089 5. In IBDatabaseEdit.TestClick, the LoginPrompt is now set to the state of the LoginPrompt Checkbox
1090   (restored original functionality)
1091
1092 6. Under OSX, if IBX fails to load libfbclient.dylib, it will now try and load the firebird
1093   library using the absolute path /Library/Frameworks/Firebird.framework/Firebird.

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