1 |
tony |
17 |
{************************************************************************}
|
2 |
|
|
{ }
|
3 |
|
|
{ Borland Delphi Visual Component Library }
|
4 |
|
|
{ InterBase Express core components }
|
5 |
|
|
{ }
|
6 |
|
|
{ Copyright (c) 1998-2000 Inprise Corporation }
|
7 |
|
|
{ }
|
8 |
|
|
{ InterBase Express is based in part on the product }
|
9 |
|
|
{ Free IB Components, written by Gregory H. Deatz for }
|
10 |
|
|
{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
|
11 |
|
|
{ Free IB Components is used under license. }
|
12 |
|
|
{ }
|
13 |
|
|
{ The contents of this file are subject to the InterBase }
|
14 |
|
|
{ Public License Version 1.0 (the "License"); you may not }
|
15 |
|
|
{ use this file except in compliance with the License. You }
|
16 |
|
|
{ may obtain a copy of the License at http://www.Inprise.com/IPL.html }
|
17 |
|
|
{ Software distributed under the License is distributed on }
|
18 |
|
|
{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either }
|
19 |
|
|
{ express or implied. See the License for the specific language }
|
20 |
|
|
{ governing rights and limitations under the License. }
|
21 |
|
|
{ The Original Code was created by InterBase Software Corporation }
|
22 |
|
|
{ and its successors. }
|
23 |
|
|
{ Portions created by Inprise Corporation are Copyright (C) Inprise }
|
24 |
|
|
{ Corporation. All Rights Reserved. }
|
25 |
|
|
{ Contributor(s): Jeff Overcash }
|
26 |
|
|
{ }
|
27 |
|
|
{ IBX For Lazarus (Firebird Express) }
|
28 |
|
|
{ Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
|
29 |
|
|
{ Portions created by MWA Software are copyright McCallum Whyman }
|
30 |
|
|
{ Associates Ltd 2011 }
|
31 |
|
|
{ }
|
32 |
|
|
{************************************************************************}
|
33 |
|
|
|
34 |
|
|
unit IBStoredProc;
|
35 |
|
|
|
36 |
|
|
{$Mode Delphi}
|
37 |
|
|
|
38 |
|
|
interface
|
39 |
|
|
|
40 |
|
|
uses SysUtils, Classes, DB, IB, IBDatabase, IBCustomDataSet,
|
41 |
|
|
IBHeader, IBSQL, IBUtils;
|
42 |
|
|
|
43 |
|
|
{ TIBStoredProc }
|
44 |
|
|
type
|
45 |
|
|
|
46 |
|
|
TIBStoredProc = class(TIBCustomDataSet)
|
47 |
|
|
private
|
48 |
|
|
FIBLoaded: Boolean;
|
49 |
|
|
FStmtHandle: TISC_STMT_HANDLE;
|
50 |
|
|
FProcName: string;
|
51 |
|
|
FParams: TParams;
|
52 |
|
|
FPrepared: Boolean;
|
53 |
|
|
FNameList: TStrings;
|
54 |
|
|
procedure SetParamsList(Value: TParams);
|
55 |
|
|
procedure FreeStatement;
|
56 |
|
|
function GetStoredProcedureNames: TStrings;
|
57 |
|
|
procedure GetStoredProcedureNamesFromServer;
|
58 |
|
|
procedure CreateParamDesc;
|
59 |
|
|
procedure SetParams;
|
60 |
|
|
procedure SetParamsFromCursor;
|
61 |
|
|
procedure GenerateSQL;
|
62 |
|
|
procedure FetchDataIntoOutputParams;
|
63 |
|
|
procedure ReadParamData(Reader: TReader);
|
64 |
|
|
procedure WriteParamData(Writer: TWriter);
|
65 |
|
|
|
66 |
|
|
protected
|
67 |
|
|
|
68 |
|
|
procedure DefineProperties(Filer: TFiler); override;
|
69 |
|
|
procedure SetFiltered(Value: Boolean); override;
|
70 |
|
|
function GetParamsCount: Word;
|
71 |
|
|
procedure SetPrepared(Value: Boolean);
|
72 |
|
|
procedure SetPrepare(Value: Boolean);
|
73 |
|
|
procedure SetProcName(Value: string);
|
74 |
|
|
procedure Disconnect; override;
|
75 |
|
|
procedure InternalOpen; override;
|
76 |
|
|
|
77 |
|
|
public
|
78 |
|
|
constructor Create(AOwner: TComponent); override;
|
79 |
|
|
destructor Destroy; override;
|
80 |
|
|
procedure CopyParams(Value: TParams);
|
81 |
|
|
procedure ExecProc;
|
82 |
|
|
function ParamByName(const Value: string): TParam;
|
83 |
|
|
procedure Prepare;
|
84 |
|
|
procedure UnPrepare;
|
85 |
|
|
property ParamCount: Word read GetParamsCount;
|
86 |
|
|
property StmtHandle: TISC_STMT_HANDLE read FStmtHandle;
|
87 |
|
|
property Prepared: Boolean read FPrepared write SetPrepare;
|
88 |
|
|
property StoredProcedureNames: TStrings read GetStoredProcedureNames;
|
89 |
|
|
|
90 |
|
|
published
|
91 |
|
|
property StoredProcName: string read FProcName write SetProcName;
|
92 |
|
|
property Params: TParams read FParams write SetParamsList;
|
93 |
|
|
property Filtered;
|
94 |
|
|
|
95 |
|
|
property BeforeDatabaseDisconnect;
|
96 |
|
|
property AfterDatabaseDisconnect;
|
97 |
|
|
property DatabaseFree;
|
98 |
|
|
property BeforeTransactionEnd;
|
99 |
|
|
property AfterTransactionEnd;
|
100 |
|
|
property TransactionFree;
|
101 |
|
|
property OnFilterRecord;
|
102 |
|
|
end;
|
103 |
|
|
|
104 |
|
|
implementation
|
105 |
|
|
|
106 |
|
|
uses
|
107 |
|
|
IBIntf;
|
108 |
|
|
|
109 |
|
|
{ TIBStoredProc }
|
110 |
|
|
|
111 |
|
|
constructor TIBStoredProc.Create(AOwner: TComponent);
|
112 |
|
|
begin
|
113 |
|
|
inherited Create(AOwner);
|
114 |
|
|
FIBLoaded := False;
|
115 |
|
|
CheckIBLoaded;
|
116 |
|
|
FIBLoaded := True;
|
117 |
|
|
FParams := TParams.Create (self);
|
118 |
|
|
FNameList := TStringList.Create;
|
119 |
|
|
end;
|
120 |
|
|
|
121 |
|
|
destructor TIBStoredProc.Destroy;
|
122 |
|
|
begin
|
123 |
|
|
if FIBLoaded then
|
124 |
|
|
begin
|
125 |
|
|
Destroying;
|
126 |
|
|
Disconnect;
|
127 |
|
|
FParams.Free;
|
128 |
|
|
FNameList.Destroy;
|
129 |
|
|
end;
|
130 |
|
|
inherited Destroy;
|
131 |
|
|
end;
|
132 |
|
|
|
133 |
|
|
procedure TIBStoredProc.Disconnect;
|
134 |
|
|
begin
|
135 |
|
|
Close;
|
136 |
|
|
UnPrepare;
|
137 |
|
|
end;
|
138 |
|
|
|
139 |
|
|
procedure TIBStoredProc.ExecProc;
|
140 |
|
|
var
|
141 |
|
|
DidActivate: Boolean;
|
142 |
|
|
begin
|
143 |
|
|
CheckInActive;
|
144 |
|
|
if StoredProcName = '' then
|
145 |
|
|
IBError(ibxeNoStoredProcName, [nil]);
|
146 |
|
|
ActivateConnection;
|
147 |
|
|
DidActivate := ActivateTransaction;
|
148 |
|
|
try
|
149 |
|
|
SetPrepared(True);
|
150 |
|
|
if DataSource <> nil then SetParamsFromCursor;
|
151 |
|
|
if FParams.Count > 0 then SetParams;
|
152 |
|
|
InternalExecQuery;
|
153 |
|
|
FetchDataIntoOutputParams;
|
154 |
|
|
finally
|
155 |
|
|
if DidActivate then
|
156 |
|
|
DeactivateTransaction;
|
157 |
|
|
end;
|
158 |
|
|
end;
|
159 |
|
|
|
160 |
|
|
procedure TIBStoredProc.SetProcName(Value: string);
|
161 |
|
|
begin
|
162 |
|
|
if not (csReading in ComponentState) then
|
163 |
|
|
begin
|
164 |
|
|
CheckInactive;
|
165 |
|
|
if Value <> FProcName then
|
166 |
|
|
begin
|
167 |
|
|
FProcName := Value;
|
168 |
|
|
FreeStatement;
|
169 |
|
|
FParams.Clear;
|
170 |
|
|
if (Value <> '') and
|
171 |
|
|
(Database <> nil) then
|
172 |
|
|
GenerateSQL;
|
173 |
|
|
end;
|
174 |
|
|
end else begin
|
175 |
|
|
FProcName := Value;
|
176 |
|
|
if (Value <> '') and
|
177 |
|
|
(Database <> nil) then
|
178 |
|
|
GenerateSQL;
|
179 |
|
|
end;
|
180 |
|
|
end;
|
181 |
|
|
|
182 |
|
|
function TIBStoredProc.GetParamsCount: Word;
|
183 |
|
|
begin
|
184 |
|
|
Result := FParams.Count;
|
185 |
|
|
end;
|
186 |
|
|
|
187 |
|
|
procedure TIBStoredProc.SetFiltered(Value: Boolean);
|
188 |
|
|
begin
|
189 |
|
|
if(Filtered <> Value) then
|
190 |
|
|
begin
|
191 |
|
|
inherited SetFiltered(value);
|
192 |
|
|
if Active then
|
193 |
|
|
begin
|
194 |
|
|
Close;
|
195 |
|
|
Open;
|
196 |
|
|
end;
|
197 |
|
|
end
|
198 |
|
|
else
|
199 |
|
|
inherited SetFiltered(value);
|
200 |
|
|
end;
|
201 |
|
|
|
202 |
|
|
procedure TIBStoredProc.GenerateSQL;
|
203 |
|
|
var
|
204 |
|
|
Query : TIBSQL;
|
205 |
|
|
input : string;
|
206 |
|
|
begin
|
207 |
|
|
ActivateConnection;
|
208 |
|
|
Database.InternalTransaction.StartTransaction;
|
209 |
|
|
Query := TIBSQL.Create(self);
|
210 |
|
|
try
|
211 |
|
|
Query.Database := DataBase;
|
212 |
|
|
Query.Transaction := Database.InternalTransaction;
|
213 |
|
|
Query.SQL.Text := 'SELECT RDB$PARAMETER_NAME, RDB$PARAMETER_TYPE ' + {do not localize}
|
214 |
|
|
'FROM RDB$PROCEDURE_PARAMETERS ' + {do not localize}
|
215 |
|
|
'WHERE RDB$PROCEDURE_NAME = ' + {do not localize}
|
216 |
|
|
'''' + FormatIdentifierValue(Database.SQLDialect, FProcName) + '''' +
|
217 |
|
|
' ORDER BY RDB$PARAMETER_NUMBER'; {do not localize}
|
218 |
|
|
Query.Prepare;
|
219 |
|
|
Query.GoToFirstRecordOnExecute := False;
|
220 |
|
|
Query.ExecQuery;
|
221 |
|
|
while (not Query.EOF) and (Query.Next <> nil) do begin
|
222 |
|
|
if (Query.Current.ByName('RDB$PARAMETER_TYPE').AsInteger = 0) then begin {do not localize}
|
223 |
|
|
if (input <> '') then
|
224 |
|
|
input := input + ', :' +
|
225 |
|
|
FormatIdentifier(Database.SQLDialect, Query.Current.ByName('RDB$PARAMETER_NAME').AsString) else {do not localize}
|
226 |
|
|
input := ':' +
|
227 |
|
|
FormatIdentifier(Database.SQLDialect, Query.Current.ByName('RDB$PARAMETER_NAME').AsString); {do not localize}
|
228 |
|
|
end
|
229 |
|
|
end;
|
230 |
|
|
SelectSQL.Text := 'Execute Procedure ' + {do not localize}
|
231 |
|
|
FormatIdentifier(Database.SQLDialect, FProcName) + ' ' + input;
|
232 |
|
|
finally
|
233 |
|
|
Query.Free;
|
234 |
|
|
Database.InternalTransaction.Commit;
|
235 |
|
|
end;
|
236 |
|
|
end;
|
237 |
|
|
|
238 |
|
|
procedure TIBStoredProc.CreateParamDesc;
|
239 |
|
|
var
|
240 |
|
|
i : integer;
|
241 |
|
|
DataType : TFieldType;
|
242 |
|
|
begin
|
243 |
|
|
DataType := ftUnknown;
|
244 |
|
|
for i := 0 to QSelect.Current.Count - 1 do begin
|
245 |
|
|
case QSelect.Fields[i].SQLtype of
|
246 |
|
|
SQL_TYPE_DATE: DataType := ftDate;
|
247 |
|
|
SQL_TYPE_TIME: DataType := ftTime;
|
248 |
|
|
SQL_TIMESTAMP: DataType := ftDateTime;
|
249 |
|
|
SQL_SHORT:
|
250 |
|
|
if ((QSelect.Fields[i].AsXSQLVar)^.sqlscale = 0) then
|
251 |
|
|
DataType := ftSmallInt
|
252 |
|
|
else
|
253 |
|
|
DataType := ftBCD;
|
254 |
|
|
SQL_LONG:
|
255 |
|
|
if ((QSelect.Fields[i].AsXSQLVar)^.sqlscale = 0) then
|
256 |
|
|
DataType := ftInteger
|
257 |
|
|
else if ((QSelect.Fields[i].AsXSQLVar)^.sqlscale >= (-4)) then
|
258 |
|
|
DataType := ftBCD
|
259 |
|
|
else
|
260 |
|
|
DataType := ftFloat;
|
261 |
|
|
SQL_INT64:
|
262 |
|
|
if ((QSelect.Fields[i].AsXSQLVar)^.sqlscale = 0) then
|
263 |
|
|
DataType := ftLargeInt
|
264 |
|
|
else if ((QSelect.Fields[i].AsXSQLVar)^.sqlscale >= (-4)) then
|
265 |
|
|
DataType := ftBCD
|
266 |
|
|
else
|
267 |
|
|
DataType := ftFloat;
|
268 |
|
|
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: DataType := ftFloat;
|
269 |
|
|
SQL_TEXT: DataType := ftString;
|
270 |
|
|
SQL_VARYING:
|
271 |
|
|
if ((QSelect.Fields[i].AsXSQLVar)^.sqllen < 1024) then
|
272 |
|
|
DataType := ftString
|
273 |
|
|
else DataType := ftBlob;
|
274 |
|
|
SQL_BLOB, SQL_ARRAY, SQL_QUAD: DataType := ftBlob;
|
275 |
|
|
end;
|
276 |
|
|
FParams.CreateParam(DataType, Trim(QSelect.Fields[i].Name), ptOutput);
|
277 |
|
|
end;
|
278 |
|
|
|
279 |
|
|
DataType := ftUnknown;
|
280 |
|
|
for i := 0 to QSelect.Params.Count - 1 do begin
|
281 |
|
|
case QSelect.Params[i].SQLtype of
|
282 |
|
|
SQL_TYPE_DATE: DataType := ftDate;
|
283 |
|
|
SQL_TYPE_TIME: DataType := ftTime;
|
284 |
|
|
SQL_TIMESTAMP: DataType := ftDateTime;
|
285 |
|
|
SQL_SHORT:
|
286 |
|
|
if ((QSelect.Params[i].AsXSQLVar)^.sqlscale = 0) then
|
287 |
|
|
DataType := ftSmallInt
|
288 |
|
|
else
|
289 |
|
|
DataType := ftBCD;
|
290 |
|
|
SQL_LONG:
|
291 |
|
|
if ((QSelect.Params[i].AsXSQLVar)^.sqlscale = 0) then
|
292 |
|
|
DataType := ftInteger
|
293 |
|
|
else if ((QSelect.Params[i].AsXSQLVar)^.sqlscale >= (-4)) then
|
294 |
|
|
DataType := ftBCD
|
295 |
|
|
else DataType := ftFloat;
|
296 |
|
|
SQL_INT64:
|
297 |
|
|
if ((QSelect.Params[i].AsXSQLVar)^.sqlscale = 0) then
|
298 |
|
|
DataType := ftLargeInt
|
299 |
|
|
else if ((QSelect.Params[i].AsXSQLVar)^.sqlscale >= (-4)) then
|
300 |
|
|
DataType := ftBCD
|
301 |
|
|
else DataType := ftFloat;
|
302 |
|
|
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: DataType := ftFloat;
|
303 |
|
|
SQL_TEXT: DataType := ftString;
|
304 |
|
|
SQL_VARYING:
|
305 |
|
|
if ((QSelect.Params[i].AsXSQLVar)^.sqllen < 1024) then
|
306 |
|
|
DataType := ftString
|
307 |
|
|
else DataType := ftBlob;
|
308 |
|
|
SQL_BLOB, SQL_ARRAY, SQL_QUAD: DataType := ftBlob;
|
309 |
|
|
end;
|
310 |
|
|
FParams.CreateParam(DataType, Trim(QSelect.Params[i].Name), ptInput);
|
311 |
|
|
end;
|
312 |
|
|
end;
|
313 |
|
|
|
314 |
|
|
procedure TIBStoredProc.SetPrepared(Value: Boolean);
|
315 |
|
|
begin
|
316 |
|
|
if Prepared <> Value then
|
317 |
|
|
begin
|
318 |
|
|
if Value then
|
319 |
|
|
try
|
320 |
|
|
if SelectSQL.Text = '' then GenerateSQL;
|
321 |
|
|
InternalPrepare;
|
322 |
|
|
if FParams.Count = 0 then CreateParamDesc;
|
323 |
|
|
FPrepared := True;
|
324 |
|
|
except
|
325 |
|
|
FreeStatement;
|
326 |
|
|
raise;
|
327 |
|
|
end
|
328 |
|
|
else FreeStatement;
|
329 |
|
|
end;
|
330 |
|
|
|
331 |
|
|
end;
|
332 |
|
|
|
333 |
|
|
procedure TIBStoredProc.Prepare;
|
334 |
|
|
begin
|
335 |
|
|
SetPrepared(True);
|
336 |
|
|
end;
|
337 |
|
|
|
338 |
|
|
procedure TIBStoredProc.UnPrepare;
|
339 |
|
|
begin
|
340 |
|
|
SetPrepared(False);
|
341 |
|
|
end;
|
342 |
|
|
|
343 |
|
|
procedure TIBStoredProc.FreeStatement;
|
344 |
|
|
begin
|
345 |
|
|
InternalUnPrepare;
|
346 |
|
|
FPrepared := False;
|
347 |
|
|
end;
|
348 |
|
|
|
349 |
|
|
procedure TIBStoredProc.SetPrepare(Value: Boolean);
|
350 |
|
|
begin
|
351 |
|
|
if Value then Prepare
|
352 |
|
|
else UnPrepare;
|
353 |
|
|
end;
|
354 |
|
|
|
355 |
|
|
procedure TIBStoredProc.CopyParams(Value: TParams);
|
356 |
|
|
begin
|
357 |
|
|
if not Prepared and (FParams.Count = 0) then
|
358 |
|
|
try
|
359 |
|
|
Prepare;
|
360 |
|
|
Value.Assign(FParams);
|
361 |
|
|
finally
|
362 |
|
|
UnPrepare;
|
363 |
|
|
end else
|
364 |
|
|
Value.Assign(FParams);
|
365 |
|
|
end;
|
366 |
|
|
|
367 |
|
|
procedure TIBStoredProc.SetParamsList(Value: TParams);
|
368 |
|
|
begin
|
369 |
|
|
CheckInactive;
|
370 |
|
|
if Prepared then
|
371 |
|
|
begin
|
372 |
|
|
SetPrepared(False);
|
373 |
|
|
FParams.Assign(Value);
|
374 |
|
|
SetPrepared(True);
|
375 |
|
|
end else
|
376 |
|
|
FParams.Assign(Value);
|
377 |
|
|
end;
|
378 |
|
|
|
379 |
|
|
function TIBStoredProc.ParamByName(const Value: string): TParam;
|
380 |
|
|
begin
|
381 |
|
|
Result := FParams.ParamByName(Value);
|
382 |
|
|
end;
|
383 |
|
|
|
384 |
|
|
function TIBStoredProc.GetStoredProcedureNames: TStrings;
|
385 |
|
|
begin
|
386 |
|
|
FNameList.clear;
|
387 |
|
|
GetStoredProcedureNamesFromServer;
|
388 |
|
|
Result := FNameList;
|
389 |
|
|
end;
|
390 |
|
|
|
391 |
|
|
procedure TIBStoredProc.GetStoredProcedureNamesFromServer;
|
392 |
|
|
var
|
393 |
|
|
Query : TIBSQL;
|
394 |
|
|
begin
|
395 |
|
|
if not (csReading in ComponentState) then begin
|
396 |
|
|
ActivateConnection;
|
397 |
|
|
Database.InternalTransaction.StartTransaction;
|
398 |
|
|
Query := TIBSQL.Create(self);
|
399 |
|
|
try
|
400 |
|
|
Query.GoToFirstRecordOnExecute := False;
|
401 |
|
|
Query.Database := DataBase;
|
402 |
|
|
Query.Transaction := Database.InternalTransaction;
|
403 |
|
|
Query.SQL.Text := 'Select RDB$PROCEDURE_NAME from RDB$PROCEDURES'; {do not localize}
|
404 |
|
|
Query.Prepare;
|
405 |
|
|
Query.ExecQuery;
|
406 |
|
|
while (not Query.EOF) and (Query.Next <> nil) do
|
407 |
|
|
FNameList.Add(TrimRight(Query.Current.ByName('RDB$PROCEDURE_NAME').AsString)); {do not localize}
|
408 |
|
|
finally
|
409 |
|
|
Query.Free;
|
410 |
|
|
Database.InternalTransaction.Commit;
|
411 |
|
|
end;
|
412 |
|
|
end;
|
413 |
|
|
end;
|
414 |
|
|
|
415 |
|
|
procedure TIBStoredProc.SetParams;
|
416 |
|
|
var
|
417 |
|
|
i : integer;
|
418 |
|
|
j: integer;
|
419 |
|
|
begin
|
420 |
|
|
i := 0;
|
421 |
|
|
for j := 0 to FParams.Count - 1 do
|
422 |
|
|
begin
|
423 |
|
|
if (Params[j].ParamType <> ptInput) then
|
424 |
|
|
continue;
|
425 |
|
|
if not Params[j].Bound then
|
426 |
|
|
IBError(ibxeRequiredParamNotSet, [nil]);
|
427 |
|
|
if Params[j].IsNull then
|
428 |
|
|
SQLParams[i].IsNull := True
|
429 |
|
|
else begin
|
430 |
|
|
SQLParams[i].IsNull := False;
|
431 |
|
|
case Params[j].DataType of
|
432 |
|
|
ftString:
|
433 |
|
|
SQLParams[i].AsString := Params[j].AsString;
|
434 |
|
|
ftBoolean, ftSmallint, ftWord:
|
435 |
|
|
SQLParams[i].AsShort := Params[j].AsSmallInt;
|
436 |
|
|
ftInteger:
|
437 |
|
|
SQLParams[i].AsLong := Params[j].AsInteger;
|
438 |
|
|
{ ftLargeInt:
|
439 |
|
|
SQLParams[i].AsInt64 := Params[j].AsLargeInt; }
|
440 |
|
|
ftFloat, ftCurrency:
|
441 |
|
|
SQLParams[i].AsDouble := Params[j].AsFloat;
|
442 |
|
|
ftBCD:
|
443 |
|
|
SQLParams[i].AsCurrency := Params[j].AsCurrency;
|
444 |
|
|
ftDate:
|
445 |
|
|
SQLParams[i].AsDate := Params[j].AsDateTime;
|
446 |
|
|
ftTime:
|
447 |
|
|
SQLParams[i].AsTime := Params[j].AsDateTime;
|
448 |
|
|
ftDateTime:
|
449 |
|
|
SQLParams[i].AsDateTime := Params[j].AsDateTime;
|
450 |
|
|
ftBlob, ftMemo:
|
451 |
|
|
SQLParams[i].AsString := Params[j].AsString;
|
452 |
|
|
else
|
453 |
|
|
IBError(ibxeNotSupported, [nil]);
|
454 |
|
|
end;
|
455 |
|
|
end;
|
456 |
|
|
Inc(i);
|
457 |
|
|
end;
|
458 |
|
|
end;
|
459 |
|
|
|
460 |
|
|
procedure TIBStoredProc.SetParamsFromCursor;
|
461 |
|
|
var
|
462 |
|
|
I: Integer;
|
463 |
|
|
DataSet: TDataSet;
|
464 |
|
|
begin
|
465 |
|
|
if DataSource <> nil then
|
466 |
|
|
begin
|
467 |
|
|
DataSet := DataSource.DataSet;
|
468 |
|
|
if DataSet <> nil then
|
469 |
|
|
begin
|
470 |
|
|
DataSet.FieldDefs.Update;
|
471 |
|
|
for I := 0 to FParams.Count - 1 do
|
472 |
|
|
with FParams[I] do
|
473 |
|
|
if (not Bound) and
|
474 |
|
|
((ParamType = ptInput) or (ParamType = ptInputOutput)) then
|
475 |
|
|
AssignField(DataSet.FieldByName(Name));
|
476 |
|
|
end;
|
477 |
|
|
end;
|
478 |
|
|
end;
|
479 |
|
|
|
480 |
|
|
procedure TIBStoredProc.FetchDataIntoOutputParams;
|
481 |
|
|
var
|
482 |
|
|
i,j : Integer;
|
483 |
|
|
begin
|
484 |
|
|
j := 0;
|
485 |
|
|
for i := 0 to FParams.Count - 1 do
|
486 |
|
|
with Params[I] do
|
487 |
|
|
if ParamType = ptOutput then begin
|
488 |
|
|
Value := QSelect.Fields[j].Value;
|
489 |
|
|
Inc(j);
|
490 |
|
|
end;
|
491 |
|
|
end;
|
492 |
|
|
|
493 |
|
|
procedure TIBStoredProc.InternalOpen;
|
494 |
|
|
begin
|
495 |
|
|
IBError(ibxeIsAExecuteProcedure,[nil]);
|
496 |
|
|
end;
|
497 |
|
|
|
498 |
|
|
procedure TIBStoredProc.DefineProperties(Filer: TFiler);
|
499 |
|
|
|
500 |
|
|
function WriteData: Boolean;
|
501 |
|
|
begin
|
502 |
|
|
if Filer.Ancestor <> nil then
|
503 |
|
|
Result := not FParams.IsEqual(TIBStoredProc(Filer.Ancestor).FParams) else
|
504 |
|
|
Result := FParams.Count > 0;
|
505 |
|
|
end;
|
506 |
|
|
|
507 |
|
|
begin
|
508 |
|
|
inherited DefineProperties(Filer);
|
509 |
|
|
Filer.DefineProperty('ParamData', ReadParamData, WriteParamData, WriteData); {do not localize}
|
510 |
|
|
end;
|
511 |
|
|
|
512 |
|
|
procedure TIBStoredProc.WriteParamData(Writer: TWriter);
|
513 |
|
|
begin
|
514 |
|
|
Writer.WriteCollection(Params);
|
515 |
|
|
end;
|
516 |
|
|
|
517 |
|
|
procedure TIBStoredProc.ReadParamData(Reader: TReader);
|
518 |
|
|
begin
|
519 |
|
|
Reader.ReadValue;
|
520 |
|
|
Reader.ReadCollection(Params);
|
521 |
|
|
end;
|
522 |
|
|
|
523 |
|
|
end.
|