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{************************************************************************} |
2 |
{ } |
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{ Borland Delphi Visual Component Library } |
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{ InterBase Express core components } |
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{ } |
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{ Copyright (c) 1998-2000 Inprise Corporation } |
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{ } |
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{ InterBase Express is based in part on the product } |
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{ Free IB Components, written by Gregory H. Deatz for } |
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{ Hoagland, Longo, Moran, Dunst & Doukas Company. } |
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{ Free IB Components is used under license. } |
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{ } |
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{ The contents of this file are subject to the InterBase } |
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{ Public License Version 1.0 (the "License"); you may not } |
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{ use this file except in compliance with the License. You } |
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{ may obtain a copy of the License at http://www.Inprise.com/IPL.html } |
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{ Software distributed under the License is distributed on } |
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{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either } |
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{ express or implied. See the License for the specific language } |
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{ governing rights and limitations under the License. } |
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{ The Original Code was created by InterBase Software Corporation } |
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{ and its successors. } |
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{ Portions created by Inprise Corporation are Copyright (C) Inprise } |
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{ Corporation. All Rights Reserved. } |
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{ Contributor(s): Jeff Overcash } |
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{ } |
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{ IBX For Lazarus (Firebird Express) } |
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{ Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk } |
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{ Portions created by MWA Software are copyright McCallum Whyman } |
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{ Associates Ltd 2011 } |
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{ } |
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{************************************************************************} |
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|
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unit IBTable; |
35 |
|
36 |
{$Mode Delphi} |
37 |
|
38 |
interface |
39 |
|
40 |
uses SysUtils, Classes, DB, IB, IBCustomDataSet, |
41 |
IBHeader, IBSQL, IBUtils; |
42 |
|
43 |
type |
44 |
|
45 |
{ TIBTable } |
46 |
|
47 |
TIBTableType = (ttSystem, ttView); |
48 |
TIBTableTypes = set of TIBTableType; |
49 |
TIndexName = String; |
50 |
|
51 |
TIBTable = class; |
52 |
|
53 |
TIBTable = class(TIBCustomDataSet) |
54 |
private |
55 |
FSystemTable: Boolean; |
56 |
FMultiTableView: Boolean; |
57 |
FMasterLink: TMasterDataLink; |
58 |
FMasterFieldsList: TStringList; |
59 |
FDetailFieldsList: TStringList; |
60 |
FStoreDefs: Boolean; |
61 |
FIndexDefs: TIndexDefs; |
62 |
FDefaultIndex: Boolean; |
63 |
FReadOnly: Boolean; |
64 |
FFieldsIndex: Boolean; |
65 |
FTableName: String; |
66 |
FIndexName: TIndexName; |
67 |
FRegenerateSQL: Boolean; |
68 |
FNameList: TStrings; |
69 |
FSwitchingIndex: Boolean; |
70 |
FPrimaryIndexFields: string; |
71 |
FTableTypes: TIBTableTypes; |
72 |
WhereAllRefreshSQL: TStrings; |
73 |
WhereDBKeyRefreshSQL: TStrings; |
74 |
WherePrimaryRefreshSQL: TStrings; |
75 |
|
76 |
function GetIndexFieldCount: Integer; |
77 |
function GetIndexField(Index: Integer): TField; |
78 |
procedure MasterChanged(Sender: TObject); |
79 |
procedure MasterDisabled(Sender: TObject); |
80 |
procedure SetDataSource(Value: TDataSource); |
81 |
procedure SetIndexField(Index: Integer; Value: TField); |
82 |
procedure SetIndexFieldNames(const Value: string); |
83 |
procedure GenerateSQL; |
84 |
procedure GenerateUpdateSQL; |
85 |
procedure SwitchToIndex(); |
86 |
procedure InternalTableRefresh(); |
87 |
function GetTableNames: TStrings; |
88 |
procedure GetTableNamesFromServer; |
89 |
procedure SetTableTypes( |
90 |
const Value: TIBTableTypes); |
91 |
function InternalGotoDBKey(DBKey: TIBDBKey): Boolean; |
92 |
function FormatFieldsList(Value: string): string; |
93 |
function GetCurrentDBKey: TIBDBKey; |
94 |
function InternalGetUpdatable: Boolean; |
95 |
function GetExists: Boolean; |
96 |
procedure SetIndexDefs(Value: TIndexDefs); |
97 |
procedure ExtractLinkFields; |
98 |
function FieldDefsStored: Boolean; |
99 |
function IndexDefsStored: Boolean; |
100 |
function GetMasterFields: string; |
101 |
procedure SetMasterFields(const Value: string); |
102 |
function GetIndexFieldNames: string; |
103 |
function GetIndexName: string; |
104 |
procedure SetIndexName(const Value: string); |
105 |
procedure SetParams; |
106 |
procedure SetReadOnly(Value: Boolean); |
107 |
procedure SetTableName(Value: String); |
108 |
procedure SetIndex(const Value: string; FieldsIndex: Boolean); |
109 |
procedure ResetSQLStatements; |
110 |
procedure Reopen; |
111 |
|
112 |
protected |
113 |
|
114 |
procedure DoOnNewRecord; override; |
115 |
procedure GetIndexParams(const IndexName: string; FieldsIndex: Boolean; |
116 |
var IndexedName: string); |
117 |
function GetCanModify: Boolean; override; |
118 |
procedure UpdateIndexDefs; override; |
119 |
procedure DataEvent(Event: TDataEvent; Info: Ptrint); override; |
120 |
procedure DefChanged(Sender: TObject); virtual; |
121 |
function GetDataSource: TDataSource; override; |
122 |
procedure InitFieldDefs; override; |
123 |
procedure InternalClose; override; |
124 |
procedure InternalOpen; override; |
125 |
procedure InternalRefresh; override; |
126 |
procedure SetFiltered(Value: Boolean); override; |
127 |
procedure SetFilterText(const Value: string); override; |
128 |
procedure SetFilterOptions(Value: TFilterOptions); override; |
129 |
procedure InternalRefreshRow; override; |
130 |
|
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public |
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constructor Create(AOwner: TComponent); override; |
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destructor Destroy; override; |
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procedure AddIndex(const Name, Fields: string; Options: TIndexOptions; |
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const DescFields: string = ''); |
136 |
procedure CreateTable; |
137 |
procedure DeleteIndex(const Name: string); |
138 |
procedure DeleteTable; |
139 |
procedure EmptyTable; |
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procedure GetDetailLinkFields(MasterFields, DetailFields: TList); virtual; |
141 |
procedure GetIndexNames(List: TStrings); |
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procedure GotoCurrent(Table: TIBTable); |
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property CurrentDBKey: TIBDBKey read GetCurrentDBKey; |
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property Exists: Boolean read GetExists; |
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property IndexFieldCount: Integer read GetIndexFieldCount; |
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property IndexFields[Index: Integer]: TField read GetIndexField write SetIndexField; |
147 |
property TableNames: TStrings read GetTableNames; |
148 |
|
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published |
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property Active; |
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property BufferChunks; |
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property CachedUpdates; |
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// property Constraints stored ConstraintsStored; |
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property DefaultIndex: Boolean read FDefaultIndex write FDefaultIndex default True; |
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property FieldDefs stored FieldDefsStored; |
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property Filter; |
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property Filtered; |
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property IndexDefs: TIndexDefs read FIndexDefs write SetIndexDefs stored IndexDefsStored; |
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property IndexFieldNames: string read GetIndexFieldNames write SetIndexFieldNames; |
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property IndexName: string read GetIndexName write SetIndexName; |
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property MasterFields: string read GetMasterFields write SetMasterFields; |
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property MasterSource: TDataSource read GetDataSource write SetDataSource; |
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property ReadOnly: Boolean read FReadOnly write SetReadOnly default False; |
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property StoreDefs: Boolean read FStoreDefs write FStoreDefs default False; |
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property TableName: String read FTableName write SetTableName; |
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property TableTypes: TIBTableTypes read FTableTypes write SetTableTypes default []; |
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property UpdateObject; |
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property UniDirectional; |
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|
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property BeforeDatabaseDisconnect; |
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property AfterDatabaseDisconnect; |
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property DatabaseFree; |
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property BeforeTransactionEnd; |
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property AfterTransactionEnd; |
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property TransactionFree; |
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property OnFilterRecord; |
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end; |
178 |
|
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implementation |
180 |
|
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{ TIBTable } |
182 |
|
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constructor TIBTable.Create(AOwner: TComponent); |
184 |
begin |
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inherited Create(AOwner); |
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FNameList := TStringList.Create; |
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FSwitchingIndex := False; |
188 |
FIndexDefs := TIndexDefs.Create(Self); |
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WhereAllRefreshSQL := TStringList.Create; |
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WhereDBKeyRefreshSQL := TStringList.Create; |
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WherePrimaryRefreshSQL := TStringList.Create; |
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FDefaultIndex := True; |
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FRegenerateSQL := True; |
194 |
FMasterFieldsList := TStringList.Create; |
195 |
FDetailFieldsList := TStringList.Create; |
196 |
FMasterLink := TMasterDataLink.Create(Self); |
197 |
FMasterLink.OnMasterChange := MasterChanged; |
198 |
FMasterLink.OnMasterDisable := MasterDisabled; |
199 |
QRefresh.OnSQLChanging := nil; |
200 |
QDelete.OnSQLChanging := nil; |
201 |
QInsert.OnSQLChanging := nil; |
202 |
QModify.OnSQLChanging := nil; |
203 |
end; |
204 |
|
205 |
destructor TIBTable.Destroy; |
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begin |
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FNameList.Free; |
208 |
FIndexDefs.Free; |
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FMasterFieldsList.Free; |
210 |
FDetailFieldsList.Free; |
211 |
FMasterLink.Free; |
212 |
WhereAllRefreshSQL.Free; |
213 |
WhereDBKeyRefreshSQL.Free; |
214 |
WherePrimaryRefreshSQL.Free; |
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inherited Destroy; |
216 |
end; |
217 |
|
218 |
procedure TIBTable.InternalClose; |
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begin |
220 |
DataEvent(dePropertyChange, 0); |
221 |
inherited InternalClose; |
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end; |
223 |
|
224 |
procedure TIBTable.InternalOpen; |
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begin |
226 |
if FTableName = '' then IBError(ibxeNoTableName, [nil]); |
227 |
ActivateConnection; |
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ActivateTransaction; |
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if FRegenerateSQL then |
230 |
begin |
231 |
InternalUnprepare; |
232 |
GenerateSQL; |
233 |
if not FReadOnly then |
234 |
GenerateUpdateSQL; |
235 |
FRegenerateSQL := False; |
236 |
end; |
237 |
{ writeln(SelectSQL.Text); |
238 |
writeln(InsertSQL.Text); |
239 |
writeln(DeleteSQL.Text); |
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writeln(ModifySQL.Text); } |
241 |
SetParams; |
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inherited InternalOpen; |
243 |
end; |
244 |
|
245 |
procedure TIBTable.InternalRefresh; |
246 |
var |
247 |
DBKey: TIBDBKey; |
248 |
begin |
249 |
DBKey := CurrentDBKey; |
250 |
Reopen; |
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if DBKey.DBKey[0] <> 0 then |
252 |
InternalGotoDBKey(DBKey); |
253 |
end; |
254 |
|
255 |
procedure TIBTable.SetFiltered(Value: Boolean); |
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begin |
257 |
if(Filtered <> Value) then |
258 |
begin |
259 |
inherited SetFiltered(value); |
260 |
if Active then |
261 |
InternalTableRefresh; |
262 |
end |
263 |
else |
264 |
inherited SetFiltered(value); |
265 |
end; |
266 |
|
267 |
procedure TIBTable.SetFilterText(const Value: string); |
268 |
begin |
269 |
if Filtered and (Value <> Filter) then |
270 |
begin |
271 |
inherited SetFilterText(value); |
272 |
InternalTableRefresh; |
273 |
end |
274 |
else |
275 |
inherited SetFilterText(value); |
276 |
end; |
277 |
|
278 |
procedure TIBTable.SetFilterOptions(Value: TFilterOptions); |
279 |
begin |
280 |
if Value <> [] then |
281 |
IBError(ibxeNotSupported, [nil]); |
282 |
end; |
283 |
|
284 |
procedure TIBTable.InternalRefreshRow; |
285 |
begin |
286 |
if CurrentDBKey.DBKey[0] <> 0 then |
287 |
QRefresh.SQL.Assign(WhereDBKeyRefreshSQL) |
288 |
else if WherePrimaryRefreshSQL.Text <> '' then |
289 |
QRefresh.SQL.Assign(WherePrimaryRefreshSQL) |
290 |
else |
291 |
QRefresh.SQL.Assign(WhereAllRefreshSQL); |
292 |
inherited InternalRefreshRow; |
293 |
end; |
294 |
|
295 |
procedure TIBTable.DefChanged(Sender: TObject); |
296 |
begin |
297 |
StoreDefs := True; |
298 |
end; |
299 |
|
300 |
procedure TIBTable.InitFieldDefs; |
301 |
var |
302 |
DidActivate: Boolean; |
303 |
Query: TIBSQL; |
304 |
begin |
305 |
if FTableName = '' then IBError(ibxeNoTableName, [nil]); |
306 |
if (InternalPrepared) then |
307 |
InternalInitFieldDefs |
308 |
else |
309 |
begin |
310 |
{Get the field defs from a simple query on the table} |
311 |
ActivateConnection; |
312 |
Query := TIBSQL.Create(self); |
313 |
try |
314 |
Query.Database := DataBase; |
315 |
Query.Transaction := Database.InternalTransaction; |
316 |
DidActivate := false; |
317 |
Query.SQL.Text := 'Select * from ' + QuoteIdentifier(DataBase.SQLDialect, FTableName); |
318 |
with Query.Transaction do |
319 |
begin |
320 |
if not InTransaction then |
321 |
begin |
322 |
StartTransaction; |
323 |
DidActivate := true |
324 |
end; |
325 |
end; |
326 |
Query.Prepare; |
327 |
if DidActivate then |
328 |
Query.Transaction.Rollback; |
329 |
FieldDefsFromQuery(Query); |
330 |
finally |
331 |
Query.Free; |
332 |
end; |
333 |
end; |
334 |
end; |
335 |
|
336 |
{ Index / Ranges / Keys } |
337 |
|
338 |
procedure TIBTable.AddIndex(const Name, Fields: string; Options: TIndexOptions; |
339 |
const DescFields: string); |
340 |
var |
341 |
Query: TIBSQL; |
342 |
FieldList: string; |
343 |
begin |
344 |
FieldDefs.Update; |
345 |
if Active then begin |
346 |
CheckBrowseMode; |
347 |
CursorPosChanged; |
348 |
end; |
349 |
Query := TIBSQL.Create(self); |
350 |
try |
351 |
Query.Database := DataBase; |
352 |
Query.Transaction := Transaction; |
353 |
FieldList := FormatFieldsList(Fields); |
354 |
if (ixPrimary in Options) then |
355 |
begin |
356 |
Query.SQL.Text := 'Alter Table ' + {do not localize} |
357 |
QuoteIdentifier(Database.SQLDialect, FTableName) + |
358 |
' Add CONSTRAINT ' + {do not localize} |
359 |
QuoteIdentifier(Database.SQLDialect, Name) |
360 |
+ ' Primary Key (' + {do not localize} |
361 |
FormatFieldsList(Fields) + |
362 |
')'; |
363 |
end |
364 |
else if ([ixUnique, ixDescending] * Options = [ixUnique, ixDescending]) then |
365 |
Query.SQL.Text := 'Create unique Descending Index ' + {do not localize} |
366 |
QuoteIdentifier(Database.SQLDialect, Name) + |
367 |
' on ' + {do not localize} |
368 |
QuoteIdentifier(Database.SQLDialect, FTableName) + |
369 |
' (' + FieldList + ')' |
370 |
else if (ixUnique in Options) then |
371 |
Query.SQL.Text := 'Create unique Index ' + {do not localize} |
372 |
QuoteIdentifier(Database.SQLDialect, Name) + |
373 |
' on ' + {do not localize} |
374 |
QuoteIdentifier(Database.SQLDialect, FTableName) + |
375 |
' (' + FieldList + ')' |
376 |
else if (ixDescending in Options) then |
377 |
Query.SQL.Text := 'Create Descending Index ' + {do not localize} |
378 |
QuoteIdentifier(Database.SQLDialect, Name) + |
379 |
' on ' + {do not localize} |
380 |
QuoteIdentifier(Database.SQLDialect, FTableName) + |
381 |
' (' + FieldList + ')' |
382 |
else |
383 |
Query.SQL.Text := 'Create Index ' + {do not localize} |
384 |
QuoteIdentifier(Database.SQLDialect, Name) + |
385 |
' on ' + {do not localize} |
386 |
QuoteIdentifier(Database.SQLDialect, FTableName) + |
387 |
' (' + FieldList + ')'; |
388 |
Query.Prepare; |
389 |
Query.ExecQuery; |
390 |
IndexDefs.Updated := False; |
391 |
finally |
392 |
Query.free |
393 |
end; |
394 |
end; |
395 |
|
396 |
procedure TIBTable.DeleteIndex(const Name: string); |
397 |
var |
398 |
Query: TIBSQL; |
399 |
|
400 |
procedure DeleteByIndex; |
401 |
begin |
402 |
Query := TIBSQL.Create(self); |
403 |
try |
404 |
Query.Database := DataBase; |
405 |
Query.Transaction := Transaction; |
406 |
Query.SQL.Text := 'Drop index ' + {do not localize} |
407 |
QuoteIdentifier(Database.SQLDialect, Name); |
408 |
Query.Prepare; |
409 |
Query.ExecQuery; |
410 |
IndexDefs.Updated := False; |
411 |
finally |
412 |
Query.Free; |
413 |
end; |
414 |
end; |
415 |
|
416 |
function DeleteByConstraint: Boolean; |
417 |
begin |
418 |
Result := False; |
419 |
Query := TIBSQL.Create(self); |
420 |
try |
421 |
Query.Database := DataBase; |
422 |
Query.Transaction := Transaction; |
423 |
Query.SQL.Text := 'Select ''foo'' from RDB$RELATION_CONSTRAINTS ' + |
424 |
'where RDB$RELATION_NAME = ' + |
425 |
'''' + |
426 |
FormatIdentifierValue(Database.SQLDialect, |
427 |
QuoteIdentifier(DataBase.SQLDialect, FTableName)) + |
428 |
''' ' + |
429 |
' AND RDB$CONSTRAINT_NAME = ' + |
430 |
'''' + |
431 |
FormatIdentifierValue(Database.SQLDialect, |
432 |
QuoteIdentifier(DataBase.SQLDialect, Name)) + |
433 |
''' ' + |
434 |
'AND RDB$CONSTRAINT_TYPE = ''PRIMARY KEY'''; |
435 |
Query.Prepare; |
436 |
Query.ExecQuery; |
437 |
if not Query.EOF then |
438 |
begin |
439 |
Query.Close; |
440 |
Query.SQL.Text := 'Alter Table ' + {do not localize} |
441 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) + |
442 |
' Drop Constraint ' + |
443 |
QuoteIdentifier(DataBase.SQLDialect, Name); |
444 |
Query.Prepare; |
445 |
Query.ExecQuery; |
446 |
IndexDefs.Updated := False; |
447 |
Result := True; |
448 |
end; |
449 |
finally |
450 |
Query.Free; |
451 |
end; |
452 |
end; |
453 |
|
454 |
procedure DeleteByKey; |
455 |
begin |
456 |
Query := TIBSQL.Create(self); |
457 |
try |
458 |
Query.Database := DataBase; |
459 |
Query.Transaction := Transaction; |
460 |
Query.SQL.Text := 'Select RDB$CONSTRAINT_NAME from RDB$RELATION_CONSTRAINTS ' + |
461 |
'where RDB$RELATION_NAME = ' + |
462 |
'''' + |
463 |
FormatIdentifierValue(Database.SQLDialect, |
464 |
QuoteIdentifier(DataBase.SQLDialect, FTableName)) + |
465 |
''' ' + |
466 |
'AND RDB$INDEX_NAME = ' + |
467 |
'''' + |
468 |
FormatIdentifierValue(Database.SQLDialect, |
469 |
QuoteIdentifier(DataBase.SQLDialect, Name)) + |
470 |
''' ' + |
471 |
'AND RDB$CONSTRAINT_TYPE = ''PRIMARY KEY'''; |
472 |
Query.Prepare; |
473 |
Query.ExecQuery; |
474 |
if not Query.EOF then |
475 |
begin |
476 |
Query.Close; |
477 |
Query.SQL.Text := 'Alter Table ' + {do not localize} |
478 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) + |
479 |
' Drop Constraint ' + |
480 |
QuoteIdentifier(DataBase.SQLDialect, Query.Current.ByName('RDB$CONSTRAINT_NAME').AsString); |
481 |
Query.Prepare; |
482 |
Query.ExecQuery; |
483 |
IndexDefs.Updated := False; |
484 |
end; |
485 |
finally |
486 |
Query.Free; |
487 |
end; |
488 |
end; |
489 |
|
490 |
begin |
491 |
if Active then |
492 |
CheckBrowseMode; |
493 |
IndexDefs.Update; |
494 |
if (Pos('RDB$PRIMARY', Name) <> 0 ) then {do not localize} {mbcs ok} |
495 |
DeleteByKey |
496 |
else if not DeleteByConstraint then |
497 |
DeleteByIndex; |
498 |
end; |
499 |
|
500 |
function TIBTable.GetIndexFieldNames: string; |
501 |
begin |
502 |
if FFieldsIndex then Result := FIndexName else Result := ''; |
503 |
end; |
504 |
|
505 |
function TIBTable.GetIndexName: string; |
506 |
begin |
507 |
if FFieldsIndex then Result := '' else Result := FIndexName; |
508 |
end; |
509 |
|
510 |
procedure TIBTable.GetIndexNames(List: TStrings); |
511 |
begin |
512 |
IndexDefs.Update; |
513 |
IndexDefs.GetItemNames(List); |
514 |
end; |
515 |
|
516 |
procedure TIBTable.GetIndexParams(const IndexName: string; |
517 |
FieldsIndex: Boolean; var IndexedName: string); |
518 |
var |
519 |
IndexStr: TIndexName; |
520 |
begin |
521 |
if IndexName <> '' then |
522 |
begin |
523 |
IndexDefs.Update; |
524 |
IndexStr := IndexName; |
525 |
if FieldsIndex then |
526 |
IndexStr := IndexDefs.FindIndexForFields(IndexName).Name; |
527 |
end; |
528 |
IndexedName := IndexStr; |
529 |
end; |
530 |
|
531 |
procedure TIBTable.SetIndexDefs(Value: TIndexDefs); |
532 |
begin |
533 |
IndexDefs.Assign(Value); |
534 |
end; |
535 |
|
536 |
procedure TIBTable.SetIndex(const Value: string; FieldsIndex: Boolean); |
537 |
begin |
538 |
if Active then CheckBrowseMode; |
539 |
if (FIndexName <> Value) or (FFieldsIndex <> FieldsIndex) then |
540 |
begin |
541 |
FIndexName := Value; |
542 |
FFieldsIndex := FieldsIndex; |
543 |
if Active then |
544 |
begin |
545 |
SwitchToIndex; |
546 |
end; |
547 |
end; |
548 |
end; |
549 |
|
550 |
procedure TIBTable.SetIndexFieldNames(const Value: string); |
551 |
begin |
552 |
SetIndex(Value, Value <> ''); |
553 |
end; |
554 |
|
555 |
procedure TIBTable.SetIndexName(const Value: string); |
556 |
begin |
557 |
SetIndex(Value, False); |
558 |
end; |
559 |
|
560 |
procedure TIBTable.UpdateIndexDefs; |
561 |
var |
562 |
Opts: TIndexOptions; |
563 |
Flds: string; |
564 |
Query, SubQuery: TIBSQL; |
565 |
fn: string; |
566 |
aField: TFieldDef; |
567 |
begin |
568 |
if not (csReading in ComponentState) then begin |
569 |
if not Active and not FSwitchingIndex then |
570 |
FieldDefs.Update; |
571 |
IndexDefs.Clear; |
572 |
Database.InternalTransaction.StartTransaction; |
573 |
Query := TIBSQL.Create(self); |
574 |
try |
575 |
FPrimaryIndexFields := ''; |
576 |
Query.GoToFirstRecordOnExecute := False; |
577 |
Query.Database := DataBase; |
578 |
Query.Transaction := Database.InternalTransaction; |
579 |
Query.SQL.Text := |
580 |
'Select I.RDB$INDEX_NAME, I.RDB$UNIQUE_FLAG, I.RDB$INDEX_TYPE, ' + {do not localize} |
581 |
'I.RDB$SEGMENT_COUNT, S.RDB$FIELD_NAME from RDB$INDICES I, ' + {do not localize} |
582 |
'RDB$INDEX_SEGMENTS S where I.RDB$INDEX_NAME = S.RDB$INDEX_NAME '+ {do not localize} |
583 |
'and I.RDB$RELATION_NAME = ' + '''' + {do not localize} |
584 |
FormatIdentifierValue(Database.SQLDialect, |
585 |
QuoteIdentifier(DataBase.SQLDialect, FTableName)) + ''''; |
586 |
Query.Prepare; |
587 |
Query.ExecQuery; |
588 |
while (not Query.EOF) and (Query.Next <> nil) do |
589 |
begin |
590 |
with IndexDefs.AddIndexDef do |
591 |
begin |
592 |
Name := TrimRight(Query.Current.ByName('RDB$INDEX_NAME').AsString); {do not localize} |
593 |
Opts := []; |
594 |
if Pos ('RDB$PRIMARY', Name) = 1 then Include(Opts, ixPrimary); {do not localize} {mbcs ok} |
595 |
if Query.Current.ByName('RDB$UNIQUE_FLAG').AsInteger = 1 then Include(Opts, ixUnique); {do not localize} |
596 |
if Query.Current.ByName('RDB$INDEX_TYPE').AsInteger = 2 then Include(Opts, ixDescending); {do not localize} |
597 |
Options := Opts; |
598 |
if (Query.Current.ByName('RDB$SEGMENT_COUNT').AsInteger = 1) then {do not localize} |
599 |
begin |
600 |
fn := Trim(Query.Current.ByName('RDB$FIELD_NAME').AsString); {do not localize} |
601 |
aField := GetFieldDefFromAlias(fn); |
602 |
if assigned(aField) then |
603 |
Fields := aField.Name |
604 |
else |
605 |
Fields := fn; |
606 |
end |
607 |
else begin |
608 |
SubQuery := TIBSQL.Create(self); |
609 |
try |
610 |
SubQuery.GoToFirstRecordOnExecute := False; |
611 |
SubQuery.Database := DataBase; |
612 |
SubQuery.Transaction := Database.InternalTransaction; |
613 |
SubQuery.SQL.Text := |
614 |
'Select RDB$FIELD_NAME from RDB$INDEX_SEGMENTS where RDB$INDEX_NAME = ' + {do not localize} |
615 |
'''' + |
616 |
FormatIdentifierValue(Database.SQLDialect, |
617 |
QuoteIdentifier(DataBase.SQLDialect, Name)) + |
618 |
'''' + 'ORDER BY RDB$FIELD_POSITION'; {do not localize} |
619 |
SubQuery.Prepare; |
620 |
SubQuery.ExecQuery; |
621 |
Flds := ''; |
622 |
while (not SubQuery.EOF) and (SubQuery.Next <> nil) do |
623 |
begin |
624 |
fn := TrimRight(SubQuery.Current.ByName('RDB$FIELD_NAME').AsString); {do not localize} |
625 |
aField := GetFieldDefFromAlias(fn); |
626 |
if assigned(aField) then |
627 |
fn := aField.Name; |
628 |
if (Flds = '') then |
629 |
Flds := fn |
630 |
else begin |
631 |
Query.Next; |
632 |
Flds := Flds + ';' + fn; |
633 |
end; |
634 |
end; |
635 |
Fields := Flds; |
636 |
finally |
637 |
SubQuery.Free; |
638 |
end; |
639 |
end; |
640 |
if (ixDescending in Opts) then |
641 |
DescFields := Fields; |
642 |
if ixPrimary in Opts then |
643 |
FPrimaryIndexFields := Fields; |
644 |
end; |
645 |
end; |
646 |
finally |
647 |
Query.Free; |
648 |
Database.InternalTransaction.Commit; |
649 |
end; |
650 |
end; |
651 |
end; |
652 |
|
653 |
function TIBTable.GetExists: Boolean; |
654 |
var |
655 |
Query: TIBSQL; |
656 |
begin |
657 |
Result := Active; |
658 |
if Result or (TableName = '') then Exit; |
659 |
Database.InternalTransaction.StartTransaction; |
660 |
Query := TIBSQL.Create(self); |
661 |
try |
662 |
Query.Database := DataBase; |
663 |
Query.Transaction := Database.InternalTransaction; |
664 |
Query.SQL.Text := |
665 |
'Select USER from RDB$RELATIONS where RDB$RELATION_NAME = ' + {do not localize} |
666 |
'''' + |
667 |
FormatIdentifierValue(Database.SQLDialect, |
668 |
QuoteIdentifier(DataBase.SQLDialect, FTableName)) + ''''; |
669 |
Query.Prepare; |
670 |
Query.ExecQuery; |
671 |
Result := not Query.EOF; |
672 |
finally |
673 |
Query.Free; |
674 |
Database.InternalTransaction.Commit; |
675 |
end; |
676 |
end; |
677 |
|
678 |
procedure TIBTable.GotoCurrent(Table: TIBTable); |
679 |
begin |
680 |
CheckBrowseMode; |
681 |
Table.CheckBrowseMode; |
682 |
if (Database <> Table.Database) or |
683 |
(CompareText(TableName, Table.TableName) <> 0) then |
684 |
IBError(ibxeTableNameMismatch, [nil]); |
685 |
Table.UpdateCursorPos; |
686 |
InternalGotoDBKey(Table.CurrentDBKey); |
687 |
DoBeforeScroll; |
688 |
Resync([rmExact, rmCenter]); |
689 |
DoAfterScroll; |
690 |
end; |
691 |
|
692 |
|
693 |
procedure TIBTable.CreateTable; |
694 |
var |
695 |
FieldList: string; |
696 |
|
697 |
procedure InitFieldsList; |
698 |
var |
699 |
I: Integer; |
700 |
begin |
701 |
InitFieldDefsFromFields; |
702 |
for I := 0 to FieldDefs.Count - 1 do begin |
703 |
if ( I > 0) then |
704 |
FieldList := FieldList + ', '; |
705 |
with FieldDefs[I] do |
706 |
begin |
707 |
case DataType of |
708 |
ftString: |
709 |
FieldList := FieldList + |
710 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
711 |
' VARCHAR(' + IntToStr(Size) + ')'; {do not localize} |
712 |
ftFixedChar: |
713 |
FieldList := FieldList + |
714 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
715 |
' CHAR(' + IntToStr(Size) + ')'; {do not localize} |
716 |
ftBoolean, ftSmallint, ftWord: |
717 |
FieldList := FieldList + |
718 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
719 |
' SMALLINT'; {do not localize} |
720 |
ftInteger: |
721 |
FieldList := FieldList + |
722 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
723 |
' INTEGER'; {do not localize} |
724 |
ftFloat, ftCurrency: |
725 |
FieldList := FieldList + |
726 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
727 |
' DOUBLE PRECISION'; {do not localize} |
728 |
ftBCD: begin |
729 |
if (Database.SQLDialect = 1) then begin |
730 |
if (Precision > 9) then |
731 |
IBError(ibxeFieldUnsupportedType,[nil]); |
732 |
if (Precision <= 4) then |
733 |
Precision := 9; |
734 |
end; |
735 |
if (Precision <= 4 ) then |
736 |
FieldList := FieldList + |
737 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
738 |
' Numeric(18, 4)' {do not localize} |
739 |
else |
740 |
FieldList := FieldList + |
741 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
742 |
' Numeric(' + IntToStr(Precision) + ', 4)'; {do not localize} |
743 |
end; |
744 |
ftDate: |
745 |
FieldList := FieldList + |
746 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
747 |
' DATE'; {do not localize} |
748 |
ftTime: |
749 |
FieldList := FieldList + |
750 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
751 |
' TIME'; {do not localize} |
752 |
ftDateTime: |
753 |
if (Database.SQLDialect = 1) then |
754 |
FieldList := FieldList + |
755 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
756 |
' DATE' {do not localize} |
757 |
else |
758 |
FieldList := FieldList + |
759 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
760 |
' TIMESTAMP'; {do not localize} |
761 |
ftLargeInt: |
762 |
if (Database.SQLDialect = 1) then |
763 |
IBError(ibxeFieldUnsupportedType,[nil]) |
764 |
else |
765 |
FieldList := FieldList + |
766 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
767 |
' Numeric(18, 0)'; {do not localize} |
768 |
ftBlob, ftMemo: |
769 |
FieldList := FieldList + |
770 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
771 |
' BLOB SUB_TYPE 1'; {do not localize} |
772 |
ftBytes, ftVarBytes, ftGraphic..ftTypedBinary: |
773 |
FieldList := FieldList + |
774 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
775 |
' BLOB SUB_TYPE 0'; {do not localize} |
776 |
ftUnknown, ftADT, ftArray, ftReference, ftDataSet, |
777 |
ftCursor, ftWideString, ftAutoInc: |
778 |
IBError(ibxeFieldUnsupportedType,[nil]); |
779 |
else |
780 |
IBError(ibxeFieldUnsupportedType,[nil]); |
781 |
end; |
782 |
if faRequired in Attributes then |
783 |
FieldList := FieldList + ' NOT NULL'; {do not localize} |
784 |
end; |
785 |
end; |
786 |
end; |
787 |
|
788 |
procedure InternalCreateTable; |
789 |
var |
790 |
I: Integer; |
791 |
Query: TIBSQL; |
792 |
begin |
793 |
if (FieldList = '') then |
794 |
IBError(ibxeFieldUnsupportedType,[nil]); |
795 |
Query := TIBSQL.Create(self); |
796 |
try |
797 |
Query.Database := Database; |
798 |
Query.transaction := Transaction; |
799 |
Query.SQL.Text := 'Create Table ' + |
800 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) + |
801 |
' (' + FieldList; {do not localize} |
802 |
for I := 0 to IndexDefs.Count - 1 do |
803 |
with IndexDefs[I] do |
804 |
if ixPrimary in Options then |
805 |
begin |
806 |
Query.SQL.Text := Query.SQL.Text + ', CONSTRAINT ' + |
807 |
QuoteIdentifier(DataBase.SQLDialect, Name) + |
808 |
' Primary Key (' + |
809 |
FormatFieldsList(Fields) + |
810 |
')'; |
811 |
end; |
812 |
Query.SQL.Text := Query.SQL.Text + ')'; |
813 |
Query.Prepare; |
814 |
Query.ExecQuery; |
815 |
finally |
816 |
Query.Free; |
817 |
end; |
818 |
end; |
819 |
|
820 |
procedure InternalCreateIndex; |
821 |
var |
822 |
I: Integer; |
823 |
begin |
824 |
for I := 0 to IndexDefs.Count - 1 do |
825 |
with IndexDefs[I] do |
826 |
if not (ixPrimary in Options) then |
827 |
AddIndex(Name, Fields, Options); |
828 |
end; |
829 |
|
830 |
begin |
831 |
CheckInactive; |
832 |
InitFieldsList; |
833 |
InternalCreateTable; |
834 |
InternalCreateIndex; |
835 |
end; |
836 |
|
837 |
procedure TIBTable.DeleteTable; |
838 |
var |
839 |
Query: TIBSQL; |
840 |
begin |
841 |
CheckInactive; |
842 |
Query := TIBSQL.Create(self); |
843 |
try |
844 |
Query.Database := DataBase; |
845 |
Query.Transaction := Transaction; |
846 |
Query.SQL.Text := 'drop table ' + {do not localize} |
847 |
QuoteIdentifier(DataBase.SQLDialect, FTableName); |
848 |
Query.Prepare; |
849 |
Query.ExecQuery; |
850 |
finally |
851 |
Query.Free; |
852 |
end; |
853 |
end; |
854 |
|
855 |
procedure TIBTable.EmptyTable; |
856 |
var |
857 |
Query: TIBSQL; |
858 |
begin |
859 |
if Active then |
860 |
CheckBrowseMode; |
861 |
Query := TIBSQL.Create(self); |
862 |
try |
863 |
Query.Database := DataBase; |
864 |
Query.Transaction := Transaction; |
865 |
Query.SQL.Text := 'delete from ' + {do not localize} |
866 |
QuoteIdentifier(DataBase.SQLDialect, FTableName); |
867 |
Query.Prepare; |
868 |
Query.ExecQuery; |
869 |
if Active then |
870 |
begin |
871 |
ClearBuffers; |
872 |
DataEvent(deDataSetChange, 0); |
873 |
end; |
874 |
finally |
875 |
Query.Free; |
876 |
end; |
877 |
end; |
878 |
|
879 |
procedure TIBTable.DataEvent(Event: TDataEvent; Info: Ptrint); |
880 |
begin |
881 |
if Event = dePropertyChange then begin |
882 |
IndexDefs.Updated := False; |
883 |
FRegenerateSQL := True; |
884 |
end; |
885 |
inherited DataEvent(Event, Info); |
886 |
end; |
887 |
|
888 |
{ Informational & Property } |
889 |
|
890 |
function TIBTable.GetCanModify: Boolean; |
891 |
begin |
892 |
Result := True; |
893 |
if (FTableName = '') or FReadOnly |
894 |
or FSystemTable or FMultiTableView then |
895 |
Result := False; |
896 |
end; |
897 |
|
898 |
function TIBTable.InternalGetUpdatable: Boolean; |
899 |
var |
900 |
Query : TIBSQL; |
901 |
begin |
902 |
Database.InternalTransaction.StartTransaction; |
903 |
Query := TIBSQL.Create(self); |
904 |
try |
905 |
Query.Database := DataBase; |
906 |
Query.Transaction := Database.InternalTransaction; |
907 |
Query.SQL.Text := 'Select RDB$SYSTEM_FLAG, RDB$DBKEY_LENGTH ' + {do not localize} |
908 |
'from RDB$RELATIONS where RDB$RELATION_NAME = ' + {do not localize} |
909 |
'''' + |
910 |
FormatIdentifierValue(Database.SQLDialect, |
911 |
QuoteIdentifier(DataBase.SQLDialect, FTableName)) + ''''; |
912 |
Query.Prepare; |
913 |
Query.ExecQuery; |
914 |
if (Query.Current[0].AsInteger <> 0) or |
915 |
(Query.Current[1].AsInteger <> 8) then |
916 |
Result := False |
917 |
else |
918 |
Result := True; |
919 |
finally |
920 |
Query.Free; |
921 |
Database.InternalTransaction.Commit; |
922 |
end; |
923 |
end; |
924 |
|
925 |
function TIBTable.FieldDefsStored: Boolean; |
926 |
begin |
927 |
Result := StoreDefs and (FieldDefs.Count > 0); |
928 |
end; |
929 |
|
930 |
function TIBTable.IndexDefsStored: Boolean; |
931 |
begin |
932 |
Result := StoreDefs and (IndexDefs.Count > 0); |
933 |
end; |
934 |
|
935 |
procedure TIBTable.SetParams; |
936 |
var |
937 |
i: Integer; |
938 |
begin |
939 |
if (MasterSource = nil) or (MasterSource.DataSet = nil) or |
940 |
(not MasterSource.DataSet.Active) or (FMasterFieldsList.Count = 0) then |
941 |
exit; |
942 |
for i := 0 to FMasterFieldsList.Count - 1 do |
943 |
QSelect.Params.ByName(FMasterFieldsList.Strings[i]).Value := |
944 |
MasterSource.DataSet.FieldByName(FMasterFieldsList.Strings[i]).Value; |
945 |
end; |
946 |
|
947 |
procedure TIBTable.MasterChanged(Sender: TObject); |
948 |
begin |
949 |
CheckBrowseMode; |
950 |
SetParams; |
951 |
ReQuery; |
952 |
end; |
953 |
|
954 |
procedure TIBTable.MasterDisabled(Sender: TObject); |
955 |
begin |
956 |
DataEvent(dePropertyChange, 0); |
957 |
ReQuery; |
958 |
end; |
959 |
|
960 |
function TIBTable.GetDataSource: TDataSource; |
961 |
begin |
962 |
Result := FMasterLink.DataSource; |
963 |
end; |
964 |
|
965 |
procedure TIBTable.SetDataSource(Value: TDataSource); |
966 |
begin |
967 |
if IsLinkedTo(Value) then IBError(ibxeCircularDataLink, [Self]); |
968 |
if FMasterLink.DataSource <> Value then |
969 |
DataEvent(dePropertyChange, 0); |
970 |
FMasterLink.DataSource := Value; |
971 |
end; |
972 |
|
973 |
function TIBTable.GetMasterFields: string; |
974 |
begin |
975 |
Result := FMasterLink.FieldNames; |
976 |
end; |
977 |
|
978 |
procedure TIBTable.SetMasterFields(const Value: string); |
979 |
begin |
980 |
if FMasterLink.FieldNames <> Value then |
981 |
DataEvent(dePropertyChange, 0); |
982 |
FMasterLink.FieldNames := Value; |
983 |
end; |
984 |
|
985 |
procedure TIBTable.DoOnNewRecord; |
986 |
var |
987 |
I: Integer; |
988 |
begin |
989 |
if FMasterLink.Active and (FMasterLink.Fields.Count > 0) then |
990 |
for I := 0 to FMasterLink.Fields.Count - 1 do |
991 |
IndexFields[I] := TField(FMasterLink.Fields[I]); |
992 |
inherited DoOnNewRecord; |
993 |
end; |
994 |
|
995 |
function TIBTable.FormatFieldsList(Value: String): String; |
996 |
var |
997 |
FieldName: string; |
998 |
i: Integer; |
999 |
begin |
1000 |
if Database.SQLDialect = 1 then begin |
1001 |
Value := QuoteIdentifier(Database.SQLDialect, Value); |
1002 |
Result := StringReplace (Value, ';', ', ', [rfReplaceAll]); |
1003 |
end |
1004 |
else begin |
1005 |
i := 1; |
1006 |
Result := ''; |
1007 |
while i <= Length(Value) do |
1008 |
begin |
1009 |
FieldName := ExtractFieldName(Value, i); |
1010 |
if Result = '' then |
1011 |
Result := QuoteIdentifier(Database.SQLDialect, FieldName) |
1012 |
else |
1013 |
Result := Result + ', ' + QuoteIdentifier(Database.SQLDialect, FieldName); |
1014 |
end; |
1015 |
end; |
1016 |
end; |
1017 |
|
1018 |
procedure TIBTable.ExtractLinkFields; |
1019 |
var |
1020 |
i: Integer; |
1021 |
DetailFieldNames: String; |
1022 |
begin |
1023 |
FMasterFieldsList.Clear; |
1024 |
FDetailFieldsList.Clear; |
1025 |
i := 1; |
1026 |
while i <= Length(MasterFields) do |
1027 |
FMasterFieldsList.Add(ExtractFieldName(MasterFields, i)); |
1028 |
i := 1; |
1029 |
if IndexFieldNames = '' then |
1030 |
DetailFieldNames := FPrimaryIndexFields |
1031 |
else |
1032 |
DetailFieldNames := IndexFieldNames; |
1033 |
while i <= Length(DetailFieldNames) do |
1034 |
FDetailFieldsList.Add(ExtractFieldName(DetailFieldNames, i)); |
1035 |
end; |
1036 |
|
1037 |
procedure TIBTable.GetDetailLinkFields(MasterFields, DetailFields: TList); |
1038 |
var |
1039 |
i: Integer; |
1040 |
Idx: TIndexDef; |
1041 |
begin |
1042 |
MasterFields.Clear; |
1043 |
DetailFields.Clear; |
1044 |
if (MasterSource <> nil) and (MasterSource.DataSet <> nil) and |
1045 |
(Self.MasterFields <> '') then |
1046 |
begin |
1047 |
Idx := nil; |
1048 |
MasterSource.DataSet.GetFieldList(MasterFields, Self.MasterFields); |
1049 |
UpdateIndexDefs; |
1050 |
if IndexName <> '' then |
1051 |
Idx := IndexDefs.Find(IndexName) |
1052 |
else if IndexFieldNames <> '' then |
1053 |
Idx := IndexDefs.GetIndexForFields(IndexFieldNames, False) |
1054 |
else |
1055 |
for i := 0 to IndexDefs.Count - 1 do |
1056 |
if ixPrimary in IndexDefs[i].Options then |
1057 |
begin |
1058 |
Idx := IndexDefs[i]; |
1059 |
break; |
1060 |
end; |
1061 |
if Idx <> nil then |
1062 |
GetFieldList(DetailFields, Idx.Fields); |
1063 |
end; |
1064 |
end; |
1065 |
|
1066 |
procedure TIBTable.SetReadOnly(Value: Boolean); |
1067 |
begin |
1068 |
CheckInactive; |
1069 |
FReadOnly := Value; |
1070 |
end; |
1071 |
|
1072 |
procedure TIBTable.SetTableName(Value: String); |
1073 |
begin |
1074 |
if not (csReading in ComponentState) then |
1075 |
begin |
1076 |
CheckInactive; |
1077 |
if Value <> FTableName then |
1078 |
begin |
1079 |
ResetSQLStatements; |
1080 |
FRegenerateSQL := True; |
1081 |
FTableName := Value; |
1082 |
IndexName := ''; |
1083 |
IndexFieldNames := ''; |
1084 |
FPrimaryIndexFields := ''; |
1085 |
DataEvent(dePropertyChange, 0); |
1086 |
end; |
1087 |
end |
1088 |
else if Value <> FTableName then |
1089 |
FTableName := Value; |
1090 |
end; |
1091 |
|
1092 |
function TIBTable.GetIndexField(Index: Integer): TField; |
1093 |
var |
1094 |
I, Count: Integer; |
1095 |
FieldNames, FieldName: String; |
1096 |
begin |
1097 |
Result := nil; |
1098 |
FieldName := ''; |
1099 |
FieldNames := IndexFieldNames; |
1100 |
if FieldNames = '' then |
1101 |
begin |
1102 |
for I := 0 to IndexDefs.Count - 1 do |
1103 |
if (IndexDefs[i].Name = FIndexName) then |
1104 |
begin |
1105 |
FieldNames := IndexDefs[i].Fields; |
1106 |
break; |
1107 |
end; |
1108 |
end; |
1109 |
for I := 0 to Index do |
1110 |
begin |
1111 |
Count := Pos(';', FieldNames); {mbcs OK} |
1112 |
if Count = 0 then |
1113 |
FieldName := FieldNames |
1114 |
else begin |
1115 |
FieldName := Copy(FieldNames, 0, Count - 1); |
1116 |
System.Delete(FieldNames, 1, Count); |
1117 |
end; |
1118 |
end; |
1119 |
if FieldName <> '' then |
1120 |
Result := FieldByName(FieldName) |
1121 |
else |
1122 |
IBError(ibxeIndexFieldMissing, [nil]); |
1123 |
end; |
1124 |
|
1125 |
|
1126 |
procedure TIBTable.SetIndexField(Index: Integer; Value: TField); |
1127 |
begin |
1128 |
GetIndexField(Index).Assign(Value); |
1129 |
end; |
1130 |
|
1131 |
function TIBTable.GetIndexFieldCount: Integer; |
1132 |
var |
1133 |
I, Index: Integer; |
1134 |
FieldNames: String; |
1135 |
done: Boolean; |
1136 |
begin |
1137 |
FieldNames := IndexFieldNames; |
1138 |
if FieldNames = '' then |
1139 |
begin |
1140 |
for I := 0 to IndexDefs.Count - 1 do |
1141 |
if (IndexDefs[i].Name = FIndexName) then |
1142 |
begin |
1143 |
FieldNames := IndexDefs[i].Fields; |
1144 |
break; |
1145 |
end; |
1146 |
end; |
1147 |
if FieldNames = '' then |
1148 |
Result := 0 |
1149 |
else |
1150 |
begin |
1151 |
done := False; |
1152 |
Result := 1; |
1153 |
while not done do |
1154 |
begin |
1155 |
Index := Pos(';', FieldNames); {mbcs ok} |
1156 |
if Index <> 0 then |
1157 |
begin |
1158 |
System.Delete(FieldNames, 1, Index); |
1159 |
Inc(Result); |
1160 |
end else |
1161 |
done := True; |
1162 |
end; |
1163 |
end; |
1164 |
end; |
1165 |
|
1166 |
function TIBTable.GetTableNames: TStrings; |
1167 |
begin |
1168 |
FNameList.clear; |
1169 |
GetTableNamesFromServer; |
1170 |
Result := FNameList; |
1171 |
end; |
1172 |
|
1173 |
procedure TIBTable.GetTableNamesFromServer; |
1174 |
var |
1175 |
Query : TIBSQL; |
1176 |
begin |
1177 |
if not (csReading in ComponentState) then begin |
1178 |
ActivateConnection; |
1179 |
Database.InternalTransaction.StartTransaction; |
1180 |
Query := TIBSQL.Create(self); |
1181 |
try |
1182 |
Query.GoToFirstRecordOnExecute := False; |
1183 |
Query.Database := DataBase; |
1184 |
Query.Transaction := Database.InternalTransaction; |
1185 |
if (TableTypes * [ttSystem, ttView] = [ttSystem, ttView]) then |
1186 |
Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' {do not localize} |
1187 |
else if ttSystem in TableTypes then |
1188 |
Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize} |
1189 |
' where RDB$VIEW_BLR is NULL' {do not localize} |
1190 |
else if ttView in TableTypes then |
1191 |
Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize} |
1192 |
' where RDB$SYSTEM_FLAG = 0' {do not localize} |
1193 |
else |
1194 |
Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize} |
1195 |
' where RDB$VIEW_BLR is NULL and RDB$SYSTEM_FLAG = 0'; {do not localize} |
1196 |
Query.Prepare; |
1197 |
Query.ExecQuery; |
1198 |
while (not Query.EOF) and (Query.Next <> nil) do |
1199 |
FNameList.Add (TrimRight(Query.Current[0].AsString)); |
1200 |
finally |
1201 |
Query.Free; |
1202 |
Database.InternalTransaction.Commit; |
1203 |
end; |
1204 |
end; |
1205 |
end; |
1206 |
|
1207 |
procedure TIBTable.SwitchToIndex(); |
1208 |
begin |
1209 |
FSwitchingIndex := True; |
1210 |
InternalTableRefresh; |
1211 |
FSwitchingIndex := False; |
1212 |
end; |
1213 |
|
1214 |
procedure TIBTable.InternalTableRefresh(); |
1215 |
var |
1216 |
DBKey: TIBDBKey; |
1217 |
begin |
1218 |
CheckActive; |
1219 |
DBKey := CurrentDBKey; |
1220 |
FRegenerateSQL := True; |
1221 |
Reopen; |
1222 |
if DBKey.DBKey[0] <> 0 then |
1223 |
InternalGotoDBKey(DBKey); |
1224 |
end; |
1225 |
|
1226 |
procedure TIBTable.GenerateSQL; |
1227 |
var |
1228 |
i: Integer; |
1229 |
SQL: TStrings; |
1230 |
OrderByStr: string; |
1231 |
bWhereClausePresent: Boolean; |
1232 |
fn: string; |
1233 |
aField: TFieldDef; |
1234 |
begin |
1235 |
bWhereClausePresent := False; |
1236 |
Database.CheckActive; |
1237 |
Transaction.CheckInTransaction; |
1238 |
if IndexDefs.Updated = False then |
1239 |
IndexDefs.Update; |
1240 |
if IndexFieldNames <> '' then |
1241 |
OrderByStr := FormatFieldsList(IndexFieldNames) |
1242 |
else if IndexName <> '' then |
1243 |
OrderByStr := FormatFieldsList(IndexDefs[IndexDefs.Indexof (IndexName)].Fields) |
1244 |
else if FDefaultIndex and (FPrimaryIndexFields <> '') then |
1245 |
OrderByStr := FormatFieldsList(FPrimaryIndexFields); |
1246 |
SQL := TStringList.Create; |
1247 |
SQL.Text := 'select ' + {do not localize} |
1248 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) + '.*, ' {do not localize} |
1249 |
+ 'RDB$DB_KEY as IBX_INTERNAL_DBKEY from ' {do not localize} |
1250 |
+ QuoteIdentifier(DataBase.SQLDialect, FTableName); |
1251 |
if Filtered and (Filter <> '') then |
1252 |
begin |
1253 |
SQL.Text := SQL.Text + ' where ' + Filter; {do not localize} |
1254 |
bWhereClausePresent := True; |
1255 |
end; |
1256 |
if (MasterSource <> nil) and (MasterSource.DataSet <> nil) and (MasterFields <> '') then |
1257 |
begin |
1258 |
if bWhereClausePresent then |
1259 |
SQL.Text := SQL.Text + ' AND ' {do not localize} |
1260 |
else |
1261 |
SQL.Text := SQL.Text + ' WHERE '; {do not localize} |
1262 |
ExtractLinkfields; |
1263 |
if FDetailFieldsList.Count < FMasterFieldsList.Count then |
1264 |
IBError(ibxeUnknownError, [nil]); |
1265 |
for i := 0 to FMasterFieldsList.Count - 1 do |
1266 |
begin |
1267 |
if i > 0 then |
1268 |
SQL.Text := SQL.Text + 'AND '; |
1269 |
aField := FieldDefs.Find(FDetailFieldsList.Strings[i]); |
1270 |
if assigned(aField) then |
1271 |
fn := GetDBAliasName(aField.FieldNo) |
1272 |
else |
1273 |
fn := FDetailFieldsList.Strings[i]; {something wrong if we get here - but should word} |
1274 |
SQL.Text := SQL.Text + |
1275 |
QuoteIdentifier(DataBase.SQLDialect, fn) + ' = :' + FMasterFieldsList.Strings[i]; |
1276 |
end; |
1277 |
end; |
1278 |
if OrderByStr <> '' then |
1279 |
SQL.Text := SQL.Text + ' order by ' + OrderByStr; {do not localize} |
1280 |
SelectSQL.Assign(SQL); |
1281 |
RefreshSQL.Text := 'select ' + {do not localize} |
1282 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) + '.*, ' {do not localize} |
1283 |
+ 'RDB$DB_KEY as IBX_INTERNAL_DBKEY from ' {do not localize} |
1284 |
+ QuoteIdentifier(DataBase.SQLDialect, FTableName) + |
1285 |
' where RDB$DB_KEY = :IBX_INTERNAL_DBKEY'; {do not localize} |
1286 |
WhereDBKeyRefreshSQL.Assign(RefreshSQL); |
1287 |
InternalPrepare; |
1288 |
SQL.Free; |
1289 |
end; |
1290 |
|
1291 |
procedure TIBTable.GenerateUpdateSQL; |
1292 |
var |
1293 |
InsertFieldList, InsertParamList, UpdateFieldList: string; |
1294 |
WherePrimaryFieldList, WhereAllFieldList: string; |
1295 |
|
1296 |
procedure GenerateFieldLists; |
1297 |
var |
1298 |
I: Integer; |
1299 |
begin |
1300 |
for I := 0 to FieldDefs.Count - 1 do begin |
1301 |
with FieldDefs[I] do begin |
1302 |
if not (InternalCalcField or (faReadOnly in Attributes) or |
1303 |
(DataType = ftUnknown)) then |
1304 |
begin |
1305 |
if ( InsertFieldList <> '' ) then begin |
1306 |
InsertFieldList := InsertFieldList + ', '; |
1307 |
InsertParamList := InsertParamList + ', '; |
1308 |
UpdateFieldList := UpdateFieldList + ', '; |
1309 |
if (DataType <> ftBlob) and (DataType <>ftMemo) then |
1310 |
WhereAllFieldList := WhereAllFieldList + ' AND '; |
1311 |
end; |
1312 |
InsertFieldList := InsertFieldList + |
1313 |
QuoteIdentifier(DataBase.SQLDialect, GetDBAliasName(FieldNo)); |
1314 |
InsertParamList := InsertParamList + ':' + Name; |
1315 |
UpdateFieldList := UpdateFieldList + |
1316 |
QuoteIdentifier(DataBase.SQLDialect, GetDBAliasName(FieldNo)) + |
1317 |
' = :' + Name; |
1318 |
if (DataType <> ftBlob) and (DataType <>ftMemo) then |
1319 |
WhereAllFieldList := WhereAllFieldList + |
1320 |
QuoteIdentifier(DataBase.SQLDialect, GetDBAliasName(FieldNo)) + ' = :' + Name; |
1321 |
end; |
1322 |
end; |
1323 |
end; |
1324 |
end; |
1325 |
|
1326 |
procedure GenerateWherePrimaryFieldList; |
1327 |
var |
1328 |
i: Integer; |
1329 |
tmp, fn: String; |
1330 |
aField: TFieldDef; |
1331 |
begin |
1332 |
i := 1; |
1333 |
while i <= Length(FPrimaryIndexFields) do |
1334 |
begin |
1335 |
tmp := ExtractFieldName(FPrimaryIndexFields, i); |
1336 |
aField := FieldDefs.Find(tmp); |
1337 |
if assigned(aField) then |
1338 |
fn := GetDBAliasName(aField.FieldNo) |
1339 |
else |
1340 |
fn := tmp; {something wrong if we get here - but will work in most cases} |
1341 |
tmp := |
1342 |
QuoteIdentifier(DataBase.SQLDialect, fn) + ' = :' + |
1343 |
QuoteIdentifier(DataBase.SQLDialect, tmp);{do not localize} |
1344 |
if WherePrimaryFieldList <> '' then |
1345 |
WherePrimaryFieldList := |
1346 |
WherePrimaryFieldList + ' AND ' + tmp |
1347 |
else |
1348 |
WherePrimaryFieldList := tmp; |
1349 |
end; |
1350 |
end; |
1351 |
|
1352 |
begin |
1353 |
if InternalGetUpdatable = False then |
1354 |
FReadOnly := True |
1355 |
else |
1356 |
begin |
1357 |
DeleteSQL.Text := 'delete from ' + {do not localize} |
1358 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) + |
1359 |
' where RDB$DB_KEY = ' + ':IBX_INTERNAL_DBKEY'; {do not localize} |
1360 |
GenerateFieldLists; |
1361 |
InsertSQL.Text := 'insert into ' + {do not localize} |
1362 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) + |
1363 |
' (' + InsertFieldList + {do not localize} |
1364 |
') values (' + InsertParamList + ')'; {do not localize} |
1365 |
ModifySQL.Text := 'update ' + |
1366 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) + |
1367 |
' set ' + UpdateFieldList + {do not localize} |
1368 |
' where RDB$DB_KEY = :IBX_INTERNAL_DBKEY'; {do not localize} |
1369 |
WhereAllRefreshSQL.Text := 'select ' + {do not localize} |
1370 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) + '.*, ' |
1371 |
+ 'RDB$DB_KEY as IBX_INTERNAL_DBKEY from ' {do not localize} |
1372 |
+ QuoteIdentifier(DataBase.SQLDialect, FTableName) + |
1373 |
' where ' + WhereAllFieldList; {do not localize} |
1374 |
if FPrimaryIndexFields <> '' then |
1375 |
begin |
1376 |
GenerateWherePrimaryFieldList; |
1377 |
WherePrimaryRefreshSQL.Text := 'select ' + {do not localize} |
1378 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) + '.*, ' {do not localize} |
1379 |
+ 'RDB$DB_KEY as IBX_INTERNAL_DBKEY from ' {do not localize} |
1380 |
+ QuoteIdentifier(DataBase.SQLDialect, FTableName) + |
1381 |
' where ' + WherePrimaryFieldList; {do not localize} |
1382 |
end; |
1383 |
try |
1384 |
InternalPrepare; |
1385 |
except |
1386 |
FReadonly := True; |
1387 |
end; |
1388 |
end; |
1389 |
end; |
1390 |
|
1391 |
procedure TIBTable.ResetSQLStatements; |
1392 |
begin |
1393 |
SelectSQL.Text := ''; |
1394 |
DeleteSQL.Text := ''; |
1395 |
InsertSQL.Text := ''; |
1396 |
ModifySQL.Text := ''; |
1397 |
RefreshSQL.Text := ''; |
1398 |
end; |
1399 |
|
1400 |
procedure TIBTable.SetTableTypes( |
1401 |
const Value: TIBTableTypes); |
1402 |
begin |
1403 |
FTableTypes := Value; |
1404 |
end; |
1405 |
|
1406 |
function TIBTable.InternalGotoDBKey(DBKey: TIBDBKey): Boolean; |
1407 |
|
1408 |
function DBKeyCompare (DBKey1, DBKey2: TIBDBKey): Boolean; |
1409 |
var |
1410 |
I: Integer; |
1411 |
begin |
1412 |
for I := 0 to 7 do |
1413 |
if (DBKey1.DBKey[i] <> DBKey2.DBKey[i]) then begin |
1414 |
result := False; |
1415 |
exit; |
1416 |
end; |
1417 |
result := True; |
1418 |
end; |
1419 |
begin |
1420 |
CheckActive; |
1421 |
DisableControls; |
1422 |
try |
1423 |
result := False; |
1424 |
First; |
1425 |
while ((not result) and (not EOF)) do begin |
1426 |
if (DBKeyCompare (DBKey, PRecordData(GetActiveBuf)^.rdDBKey)) then |
1427 |
result := True |
1428 |
else |
1429 |
Next; |
1430 |
end; |
1431 |
if not result then |
1432 |
First |
1433 |
else |
1434 |
CursorPosChanged; |
1435 |
finally |
1436 |
EnableControls; |
1437 |
end; |
1438 |
end; |
1439 |
|
1440 |
function TIBTable.GetCurrentDBKey: TIBDBKey; |
1441 |
var |
1442 |
Buf: pChar; |
1443 |
begin |
1444 |
CheckActive; |
1445 |
buf := GetActiveBuf; |
1446 |
if Buf <> nil then |
1447 |
Result := PRecordData(Buf)^.rdDBKey |
1448 |
else |
1449 |
Result.DBKey[0] := 0; |
1450 |
end; |
1451 |
|
1452 |
procedure TIBTable.Reopen; |
1453 |
begin |
1454 |
DisableControls; |
1455 |
try |
1456 |
if Active then |
1457 |
begin |
1458 |
SetState(dsInactive); |
1459 |
CloseCursor; |
1460 |
OpenCursor(false); |
1461 |
SetState(dsBrowse); |
1462 |
end; |
1463 |
finally |
1464 |
EnableControls; |
1465 |
end; |
1466 |
end; |
1467 |
|
1468 |
end. |