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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 :
21 : #include "formlinkdialog.hxx"
22 :
23 : #include "modulepcr.hxx"
24 : #include "formresid.hrc"
25 : #include "formstrings.hxx"
26 : #include <vcl/combobox.hxx>
27 : #include <vcl/msgbox.hxx>
28 : #include <vcl/waitobj.hxx>
29 : #include <vcl/tabpage.hxx>
30 : #include <vcl/layout.hxx>
31 : #include <svtools/localresaccess.hxx>
32 : #include <connectivity/dbtools.hxx>
33 : #include <connectivity/dbexception.hxx>
34 : #include <toolkit/helper/vclunohelper.hxx>
35 : #include <comphelper/processfactory.hxx>
36 :
37 : #include <com/sun/star/sdbcx/XColumnsSupplier.hpp>
38 : #include <com/sun/star/sdbcx/XKeysSupplier.hpp>
39 : #include <com/sun/star/sdbcx/KeyType.hpp>
40 : #include <com/sun/star/container/XNameAccess.hpp>
41 : #include <com/sun/star/sdbcx/XTablesSupplier.hpp>
42 : #include <com/sun/star/sdbc/XRowSet.hpp>
43 : #include <com/sun/star/sdb/CommandType.hpp>
44 : #include <com/sun/star/sdb/SQLContext.hpp>
45 :
46 :
47 :
48 : namespace pcr
49 : {
50 :
51 :
52 : using namespace ::com::sun::star::uno;
53 : using namespace ::com::sun::star::lang;
54 : using namespace ::com::sun::star::form;
55 : using namespace ::com::sun::star::sdb;
56 : using namespace ::com::sun::star::sdbc;
57 : using namespace ::com::sun::star::sdbcx;
58 : using namespace ::com::sun::star::beans;
59 : using namespace ::com::sun::star::container;
60 :
61 :
62 : //= FieldLinkRow
63 :
64 0 : class FieldLinkRow : public TabPage
65 : {
66 : private:
67 : ComboBox* m_pDetailColumn;
68 : ComboBox* m_pMasterColumn;
69 :
70 : Link m_aLinkChangeHandler;
71 :
72 : public:
73 : FieldLinkRow( vcl::Window* _pParent );
74 :
75 0 : inline void SetLinkChangeHandler( const Link& _rHdl ) { m_aLinkChangeHandler = _rHdl; }
76 :
77 : enum LinkParticipant
78 : {
79 : eDetailField,
80 : eMasterField
81 : };
82 : /** retrieves the selected field name for either the master or the detail field
83 : @return <TRUE/> if and only a valid field is selected
84 : */
85 : bool GetFieldName( LinkParticipant _eWhich, OUString& /* [out] */ _rName ) const;
86 : void SetFieldName( LinkParticipant _eWhich, const OUString& _rName );
87 :
88 : void fillList( LinkParticipant _eWhich, const Sequence< OUString >& _rFieldNames );
89 :
90 : private:
91 : DECL_LINK( OnFieldNameChanged, ComboBox* );
92 : };
93 :
94 :
95 0 : FieldLinkRow::FieldLinkRow( vcl::Window* _pParent )
96 0 : :TabPage( _pParent, "FieldLinkRow", "modules/spropctrlr/ui/fieldlinkrow.ui" )
97 : {
98 0 : get(m_pDetailColumn, "detailCombobox");
99 0 : get(m_pMasterColumn, "masterCombobox");
100 :
101 0 : m_pDetailColumn->SetDropDownLineCount( 10 );
102 0 : m_pMasterColumn->SetDropDownLineCount( 10 );
103 :
104 0 : m_pDetailColumn->SetModifyHdl( LINK( this, FieldLinkRow, OnFieldNameChanged ) );
105 0 : m_pMasterColumn->SetModifyHdl( LINK( this, FieldLinkRow, OnFieldNameChanged ) );
106 0 : }
107 :
108 :
109 0 : void FieldLinkRow::fillList( LinkParticipant _eWhich, const Sequence< OUString >& _rFieldNames )
110 : {
111 0 : ComboBox* pBox = ( _eWhich == eDetailField ) ? m_pDetailColumn : m_pMasterColumn;
112 :
113 0 : const OUString* pFieldName = _rFieldNames.getConstArray();
114 0 : const OUString* pFieldNameEnd = pFieldName + _rFieldNames.getLength();
115 0 : for ( ; pFieldName != pFieldNameEnd; ++pFieldName )
116 0 : pBox->InsertEntry( *pFieldName );
117 0 : }
118 :
119 :
120 0 : bool FieldLinkRow::GetFieldName( LinkParticipant _eWhich, OUString& /* [out] */ _rName ) const
121 : {
122 0 : const ComboBox* pBox = ( _eWhich == eDetailField ) ? m_pDetailColumn : m_pMasterColumn;
123 0 : _rName = pBox->GetText();
124 0 : return !_rName.isEmpty();
125 : }
126 :
127 :
128 0 : void FieldLinkRow::SetFieldName( LinkParticipant _eWhich, const OUString& _rName )
129 : {
130 0 : ComboBox* pBox = ( _eWhich == eDetailField ) ? m_pDetailColumn : m_pMasterColumn;
131 0 : pBox->SetText( _rName );
132 0 : }
133 :
134 :
135 0 : IMPL_LINK( FieldLinkRow, OnFieldNameChanged, ComboBox*, /*_pBox*/ )
136 : {
137 0 : if ( m_aLinkChangeHandler.IsSet() )
138 0 : return m_aLinkChangeHandler.Call( this );
139 :
140 0 : return 0L;
141 : }
142 :
143 0 : extern "C" SAL_DLLPUBLIC_EXPORT vcl::Window* SAL_CALL makeFieldLinkRow(vcl::Window *pParent, VclBuilder::stringmap &)
144 : {
145 0 : return new FieldLinkRow(pParent);
146 : }
147 :
148 :
149 : //= FormLinkDialog
150 :
151 :
152 0 : FormLinkDialog::FormLinkDialog( vcl::Window* _pParent, const Reference< XPropertySet >& _rxDetailForm,
153 : const Reference< XPropertySet >& _rxMasterForm, const Reference< XComponentContext >& _rxContext,
154 : const OUString& _sExplanation,
155 : const OUString& _sDetailLabel,
156 : const OUString& _sMasterLabel)
157 : :ModalDialog( _pParent, "FormLinks", "modules/spropctrlr/ui/formlinksdialog.ui" )
158 0 : ,m_aRow1 ( new FieldLinkRow( get<VclVBox>("box") ) )
159 0 : ,m_aRow2 ( new FieldLinkRow( get<VclVBox>("box") ) )
160 0 : ,m_aRow3 ( new FieldLinkRow( get<VclVBox>("box") ) )
161 0 : ,m_aRow4 ( new FieldLinkRow( get<VclVBox>("box") ) )
162 : ,m_xContext ( _rxContext )
163 : ,m_xDetailForm( _rxDetailForm )
164 : ,m_xMasterForm( _rxMasterForm )
165 : ,m_sDetailLabel(_sDetailLabel)
166 0 : ,m_sMasterLabel(_sMasterLabel)
167 : {
168 0 : get(m_pExplanation, "explanationLabel");
169 0 : get(m_pDetailLabel, "detailLabel");
170 0 : get(m_pMasterLabel, "masterLabel");
171 0 : get(m_pOK, "ok");
172 0 : get(m_pSuggest, "suggestButton");
173 0 : m_aRow1->Show();
174 0 : m_aRow2->Show();
175 0 : m_aRow3->Show();
176 0 : m_aRow4->Show();
177 0 : set_width_request(600);
178 :
179 0 : if ( !_sExplanation.isEmpty() )
180 0 : m_pExplanation->SetText(_sExplanation);
181 :
182 0 : m_pSuggest->SetClickHdl ( LINK( this, FormLinkDialog, OnSuggest ) );
183 0 : m_aRow1->SetLinkChangeHandler( LINK( this, FormLinkDialog, OnFieldChanged ) );
184 0 : m_aRow2->SetLinkChangeHandler( LINK( this, FormLinkDialog, OnFieldChanged ) );
185 0 : m_aRow3->SetLinkChangeHandler( LINK( this, FormLinkDialog, OnFieldChanged ) );
186 0 : m_aRow4->SetLinkChangeHandler( LINK( this, FormLinkDialog, OnFieldChanged ) );
187 :
188 0 : PostUserEvent( LINK( this, FormLinkDialog, OnInitialize ) );
189 :
190 0 : updateOkButton();
191 0 : }
192 :
193 :
194 0 : FormLinkDialog::~FormLinkDialog( )
195 : {
196 0 : }
197 :
198 :
199 0 : void FormLinkDialog::commitLinkPairs()
200 : {
201 : // collect the field lists from the rows
202 0 : ::std::vector< OUString > aDetailFields; aDetailFields.reserve( 4 );
203 0 : ::std::vector< OUString > aMasterFields; aMasterFields.reserve( 4 );
204 :
205 : const FieldLinkRow* aRows[] = {
206 0 : m_aRow1.get(), m_aRow2.get(), m_aRow3.get(), m_aRow4.get()
207 0 : };
208 :
209 0 : for ( sal_Int32 i = 0; i < 4; ++i )
210 : {
211 0 : OUString sDetailField, sMasterField;
212 0 : aRows[ i ]->GetFieldName( FieldLinkRow::eDetailField, sDetailField );
213 0 : aRows[ i ]->GetFieldName( FieldLinkRow::eMasterField, sMasterField );
214 0 : if ( sDetailField.isEmpty() && sMasterField.isEmpty() )
215 0 : continue;
216 :
217 0 : aDetailFields.push_back( sDetailField );
218 0 : aMasterFields.push_back( sMasterField );
219 0 : }
220 :
221 : // and set as property values
222 : try
223 : {
224 0 : Reference< XPropertySet > xDetailFormProps( m_xDetailForm, UNO_QUERY );
225 0 : if ( xDetailFormProps.is() )
226 : {
227 0 : OUString *pFields = aDetailFields.empty() ? 0 : &aDetailFields[0];
228 0 : xDetailFormProps->setPropertyValue( PROPERTY_DETAILFIELDS, makeAny( Sequence< OUString >( pFields, aDetailFields.size() ) ) );
229 0 : pFields = aMasterFields.empty() ? 0 : &aMasterFields[0];
230 0 : xDetailFormProps->setPropertyValue( PROPERTY_MASTERFIELDS, makeAny( Sequence< OUString >( pFields, aMasterFields.size() ) ) );
231 0 : }
232 : }
233 0 : catch( const Exception& )
234 : {
235 : OSL_FAIL( "FormLinkDialog::commitLinkPairs: caught an exception while setting the properties!" );
236 0 : }
237 0 : }
238 :
239 :
240 0 : short FormLinkDialog::Execute()
241 : {
242 0 : short nResult = ModalDialog::Execute();
243 :
244 0 : if ( RET_OK == nResult )
245 0 : commitLinkPairs();
246 :
247 0 : return nResult;
248 : }
249 :
250 :
251 0 : void FormLinkDialog::initializeFieldLists()
252 : {
253 0 : Sequence< OUString > sDetailFields;
254 0 : getFormFields( m_xDetailForm, sDetailFields );
255 :
256 0 : Sequence< OUString > sMasterFields;
257 0 : getFormFields( m_xMasterForm, sMasterFields );
258 :
259 : FieldLinkRow* aRows[] = {
260 0 : m_aRow1.get(), m_aRow2.get(), m_aRow3.get(), m_aRow4.get()
261 0 : };
262 0 : for ( sal_Int32 i = 0; i < 4 ; ++i )
263 : {
264 0 : aRows[i]->fillList( FieldLinkRow::eDetailField, sDetailFields );
265 0 : aRows[i]->fillList( FieldLinkRow::eMasterField, sMasterFields );
266 0 : }
267 :
268 0 : }
269 :
270 :
271 0 : void FormLinkDialog::initializeColumnLabels()
272 : {
273 : // label for the detail form
274 0 : OUString sDetailType = getFormDataSourceType( m_xDetailForm );
275 0 : if ( sDetailType.isEmpty() )
276 : {
277 0 : if ( m_sDetailLabel.isEmpty() )
278 : {
279 0 : m_sDetailLabel = PcrRes(STR_DETAIL_FORM).toString();
280 : }
281 0 : sDetailType = m_sDetailLabel;
282 : }
283 0 : m_pDetailLabel->SetText( sDetailType );
284 :
285 : // label for the master form
286 0 : OUString sMasterType = getFormDataSourceType( m_xMasterForm );
287 0 : if ( sMasterType.isEmpty() )
288 : {
289 0 : if ( m_sMasterLabel.isEmpty() )
290 : {
291 0 : m_sMasterLabel = PcrRes(STR_MASTER_FORM).toString();
292 : }
293 0 : sMasterType = m_sMasterLabel;
294 : }
295 0 : m_pMasterLabel->SetText( sMasterType );
296 0 : }
297 :
298 :
299 0 : void FormLinkDialog::initializeFieldRowsFrom( Sequence< OUString >& _rDetailFields, Sequence< OUString >& _rMasterFields )
300 : {
301 : // our UI does allow 4 fields max
302 0 : _rDetailFields.realloc( 4 );
303 0 : _rMasterFields.realloc( 4 );
304 :
305 0 : const OUString* pDetailFields = _rDetailFields.getConstArray();
306 0 : const OUString* pMasterFields = _rMasterFields.getConstArray();
307 :
308 : FieldLinkRow* aRows[] = {
309 0 : m_aRow1.get(), m_aRow2.get(), m_aRow3.get(), m_aRow4.get()
310 0 : };
311 0 : for ( sal_Int32 i = 0; i < 4; ++i, ++pDetailFields, ++pMasterFields )
312 : {
313 0 : aRows[ i ]->SetFieldName( FieldLinkRow::eDetailField, *pDetailFields );
314 0 : aRows[ i ]->SetFieldName( FieldLinkRow::eMasterField, *pMasterFields );
315 : }
316 0 : }
317 :
318 :
319 0 : void FormLinkDialog::initializeLinks()
320 : {
321 : try
322 : {
323 0 : Sequence< OUString > aDetailFields;
324 0 : Sequence< OUString > aMasterFields;
325 :
326 0 : Reference< XPropertySet > xDetailFormProps( m_xDetailForm, UNO_QUERY );
327 0 : if ( xDetailFormProps.is() )
328 : {
329 0 : xDetailFormProps->getPropertyValue( PROPERTY_DETAILFIELDS ) >>= aDetailFields;
330 0 : xDetailFormProps->getPropertyValue( PROPERTY_MASTERFIELDS ) >>= aMasterFields;
331 : }
332 :
333 0 : initializeFieldRowsFrom( aDetailFields, aMasterFields );
334 : }
335 0 : catch( const Exception& )
336 : {
337 : OSL_FAIL( "FormLinkDialog::initializeLinks: caught an exception!" );
338 : }
339 0 : }
340 :
341 :
342 0 : void FormLinkDialog::updateOkButton()
343 : {
344 : // in all rows, there must be either two valid selections, or none at all
345 : // If there is at least one row with exactly one valid selection, then the
346 : // OKButton needs to be disabled
347 0 : bool bEnable = true;
348 :
349 : const FieldLinkRow* aRows[] = {
350 0 : m_aRow1.get(), m_aRow2.get(), m_aRow3.get(), m_aRow4.get()
351 0 : };
352 :
353 0 : for ( sal_Int32 i = 0; ( i < 4 ) && bEnable; ++i )
354 : {
355 0 : OUString sNotInterestedInRightNow;
356 0 : if ( aRows[ i ]->GetFieldName( FieldLinkRow::eDetailField, sNotInterestedInRightNow )
357 0 : != aRows[ i ]->GetFieldName( FieldLinkRow::eMasterField, sNotInterestedInRightNow )
358 : )
359 0 : bEnable = false;
360 0 : }
361 :
362 0 : m_pOK->Enable( bEnable );
363 0 : }
364 :
365 :
366 0 : OUString FormLinkDialog::getFormDataSourceType( const Reference< XPropertySet >& _rxForm ) const
367 : {
368 0 : OUString sReturn;
369 0 : if ( !_rxForm.is() )
370 0 : return sReturn;
371 :
372 : try
373 : {
374 0 : sal_Int32 nCommandType = CommandType::COMMAND;
375 0 : OUString sCommand;
376 :
377 0 : _rxForm->getPropertyValue( PROPERTY_COMMANDTYPE ) >>= nCommandType;
378 0 : _rxForm->getPropertyValue( PROPERTY_COMMAND ) >>= sCommand;
379 :
380 0 : if ( ( nCommandType == CommandType::TABLE )
381 0 : || ( nCommandType == CommandType::QUERY )
382 : )
383 0 : sReturn = sCommand;
384 : }
385 0 : catch( const Exception& )
386 : {
387 : OSL_FAIL( "FormLinkDialog::getFormDataSourceType: caught an exception!" );
388 : }
389 0 : return sReturn;
390 : }
391 :
392 :
393 0 : void FormLinkDialog::getFormFields( const Reference< XPropertySet >& _rxForm, Sequence< OUString >& /* [out] */ _rNames ) const
394 : {
395 0 : _rNames.realloc( 0 );
396 :
397 0 : ::dbtools::SQLExceptionInfo aErrorInfo;
398 0 : OUString sCommand;
399 : try
400 : {
401 0 : WaitObject aWaitCursor( const_cast< FormLinkDialog* >( this ) );
402 :
403 : OSL_ENSURE( _rxForm.is(), "FormLinkDialog::getFormFields: invalid form!" );
404 :
405 0 : sal_Int32 nCommandType = CommandType::COMMAND;
406 :
407 0 : _rxForm->getPropertyValue( PROPERTY_COMMANDTYPE ) >>= nCommandType;
408 0 : _rxForm->getPropertyValue( PROPERTY_COMMAND ) >>= sCommand;
409 :
410 0 : Reference< XConnection > xConnection;
411 0 : ensureFormConnection( _rxForm, xConnection );
412 :
413 0 : _rNames = ::dbtools::getFieldNamesByCommandDescriptor(
414 : xConnection,
415 : nCommandType,
416 : sCommand,
417 : &aErrorInfo
418 0 : );
419 : }
420 0 : catch (const SQLContext& e) { aErrorInfo = e; }
421 0 : catch (const SQLWarning& e) { aErrorInfo = e; }
422 0 : catch (const SQLException& e ) { aErrorInfo = e; }
423 0 : catch( const Exception& )
424 : {
425 : OSL_FAIL( "FormLinkDialog::getFormFields: caught a non-SQL exception!" );
426 : }
427 :
428 0 : if ( aErrorInfo.isValid() )
429 : {
430 0 : OUString sErrorMessage;
431 : {
432 0 : sErrorMessage = PcrRes(STR_ERROR_RETRIEVING_COLUMNS).toString();
433 0 : sErrorMessage = sErrorMessage.replaceFirst("#", sCommand);
434 : }
435 :
436 0 : SQLContext aContext;
437 0 : aContext.Message = sErrorMessage;
438 0 : aContext.NextException = aErrorInfo.get();
439 0 : ::dbtools::showError( aContext, VCLUnoHelper::GetInterface( const_cast< FormLinkDialog* >( this ) ), m_xContext );
440 0 : }
441 0 : }
442 :
443 :
444 0 : void FormLinkDialog::ensureFormConnection( const Reference< XPropertySet >& _rxFormProps, Reference< XConnection >& /* [out] */ _rxConnection ) const
445 : {
446 : OSL_PRECOND( _rxFormProps.is(), "FormLinkDialog::ensureFormConnection: invalid form!" );
447 0 : if ( !_rxFormProps.is() )
448 0 : return;
449 0 : if ( _rxFormProps->getPropertySetInfo()->hasPropertyByName(PROPERTY_ACTIVE_CONNECTION) )
450 0 : _rxConnection.set(_rxFormProps->getPropertyValue(PROPERTY_ACTIVE_CONNECTION),UNO_QUERY);
451 :
452 0 : if ( !_rxConnection.is() )
453 0 : _rxConnection = ::dbtools::connectRowset( Reference< XRowSet >( _rxFormProps, UNO_QUERY ), m_xContext, true );
454 : }
455 :
456 :
457 0 : void FormLinkDialog::getConnectionMetaData( const Reference< XPropertySet >& _rxFormProps, Reference< XDatabaseMetaData >& /* [out] */ _rxMeta ) const
458 : {
459 0 : if ( _rxFormProps.is() )
460 : {
461 0 : Reference< XConnection > xConnection;
462 0 : if ( !::dbtools::isEmbeddedInDatabase( _rxFormProps, xConnection ) )
463 0 : _rxFormProps->getPropertyValue( PROPERTY_ACTIVE_CONNECTION ) >>= xConnection;
464 0 : if ( xConnection.is() )
465 0 : _rxMeta = xConnection->getMetaData();
466 : }
467 0 : }
468 :
469 :
470 0 : Reference< XPropertySet > FormLinkDialog::getCanonicUnderlyingTable( const Reference< XPropertySet >& _rxFormProps ) const
471 : {
472 0 : Reference< XPropertySet > xTable;
473 : try
474 : {
475 0 : Reference< XTablesSupplier > xTablesInForm( ::dbtools::getCurrentSettingsComposer( _rxFormProps, m_xContext ), UNO_QUERY );
476 0 : Reference< XNameAccess > xTables;
477 0 : if ( xTablesInForm.is() )
478 0 : xTables = xTablesInForm->getTables();
479 0 : Sequence< OUString > aTableNames;
480 0 : if ( xTables.is() )
481 0 : aTableNames = xTables->getElementNames();
482 :
483 0 : if ( aTableNames.getLength() == 1 )
484 : {
485 0 : xTables->getByName( aTableNames[ 0 ] ) >>= xTable;
486 : OSL_ENSURE( xTable.is(), "FormLinkDialog::getCanonicUnderlyingTable: invalid table!" );
487 0 : }
488 : }
489 0 : catch( const Exception& )
490 : {
491 : OSL_FAIL( "FormLinkDialog::getCanonicUnderlyingTable: caught an exception!" );
492 : }
493 0 : return xTable;
494 : }
495 :
496 :
497 0 : bool FormLinkDialog::getExistingRelation( const Reference< XPropertySet >& _rxLHS, const Reference< XPropertySet >& /*_rxRHS*/,
498 : // TODO: fix the usage of _rxRHS. This is issue #i81956#.
499 : Sequence< OUString >& _rLeftFields, Sequence< OUString >& _rRightFields ) const
500 : {
501 : try
502 : {
503 0 : Reference< XKeysSupplier > xSuppKeys( _rxLHS, UNO_QUERY );
504 0 : Reference< XIndexAccess > xKeys;
505 0 : if ( xSuppKeys.is() )
506 0 : xKeys = xSuppKeys->getKeys();
507 :
508 0 : if ( xKeys.is() )
509 : {
510 0 : Reference< XPropertySet > xKey;
511 0 : Reference< XColumnsSupplier > xKeyColSupp( xKey, UNO_QUERY );
512 0 : Reference< XIndexAccess > xKeyColumns;
513 0 : Reference< XPropertySet > xKeyColumn;
514 0 : OUString sColumnName, sRelatedColumnName;
515 :
516 0 : const sal_Int32 keyCount = xKeys->getCount();
517 0 : for ( sal_Int32 key = 0; key < keyCount; ++key )
518 : {
519 0 : xKeys->getByIndex( key ) >>= xKey;
520 0 : sal_Int32 nKeyType = 0;
521 0 : xKey->getPropertyValue("Type") >>= nKeyType;
522 0 : if ( nKeyType != KeyType::FOREIGN )
523 0 : continue;
524 :
525 0 : xKeyColumns.clear();
526 0 : xKeyColSupp.set(xKey, css::uno::UNO_QUERY);
527 0 : if ( xKeyColSupp.is() )
528 0 : xKeyColumns.set(xKeyColSupp->getColumns(), css::uno::UNO_QUERY);
529 : OSL_ENSURE( xKeyColumns.is(), "FormLinkDialog::getExistingRelation: could not obtain the columns for the key!" );
530 :
531 0 : if ( !xKeyColumns.is() )
532 0 : continue;
533 :
534 0 : const sal_Int32 columnCount = xKeyColumns->getCount();
535 0 : _rLeftFields.realloc( columnCount );
536 0 : _rRightFields.realloc( columnCount );
537 0 : for ( sal_Int32 column = 0; column < columnCount; ++column )
538 : {
539 0 : xKeyColumn.clear();
540 0 : xKeyColumns->getByIndex( column ) >>= xKeyColumn;
541 : OSL_ENSURE( xKeyColumn.is(), "FormLinkDialog::getExistingRelation: invalid key column!" );
542 0 : if ( xKeyColumn.is() )
543 : {
544 0 : xKeyColumn->getPropertyValue( PROPERTY_NAME ) >>= sColumnName;
545 0 : xKeyColumn->getPropertyValue("RelatedColumn") >>= sRelatedColumnName;
546 :
547 0 : _rLeftFields[ column ] = sColumnName;
548 0 : _rRightFields[ column ] = sRelatedColumnName;
549 : }
550 : }
551 0 : }
552 0 : }
553 : }
554 0 : catch( const Exception& )
555 : {
556 : OSL_FAIL( "FormLinkDialog::getExistingRelation: caught an exception!" );
557 : }
558 :
559 0 : return ( _rLeftFields.getLength() > 0 ) && ( !_rLeftFields[ 0 ].isEmpty() );
560 : }
561 :
562 :
563 0 : void FormLinkDialog::initializeSuggest()
564 : {
565 0 : Reference< XPropertySet > xDetailFormProps( m_xDetailForm, UNO_QUERY );
566 0 : Reference< XPropertySet > xMasterFormProps( m_xMasterForm, UNO_QUERY );
567 0 : if ( !xDetailFormProps.is() || !xMasterFormProps.is() )
568 0 : return;
569 :
570 : try
571 : {
572 0 : bool bEnable = true;
573 :
574 : // only show the button when both forms are based on the same data source
575 0 : if ( bEnable )
576 : {
577 0 : OUString sMasterDS, sDetailDS;
578 0 : xMasterFormProps->getPropertyValue( PROPERTY_DATASOURCE ) >>= sMasterDS;
579 0 : xDetailFormProps->getPropertyValue( PROPERTY_DATASOURCE ) >>= sDetailDS;
580 0 : bEnable = ( sMasterDS == sDetailDS );
581 : }
582 :
583 : // only show the button when the connection supports relations
584 0 : if ( bEnable )
585 : {
586 0 : Reference< XDatabaseMetaData > xMeta;
587 0 : getConnectionMetaData( xDetailFormProps, xMeta );
588 : OSL_ENSURE( xMeta.is(), "FormLinkDialog::initializeSuggest: unable to retrieve the meta data for the connection!" );
589 : try
590 : {
591 0 : bEnable = xMeta.is() && xMeta->supportsIntegrityEnhancementFacility();
592 : }
593 0 : catch(const Exception&)
594 : {
595 0 : bEnable = false;
596 0 : }
597 : }
598 :
599 : // only enable the button if there is a "canonic" table underlying both forms
600 0 : Reference< XPropertySet > xDetailTable, xMasterTable;
601 0 : if ( bEnable )
602 : {
603 0 : xDetailTable = getCanonicUnderlyingTable( xDetailFormProps );
604 0 : xMasterTable = getCanonicUnderlyingTable( xMasterFormProps );
605 0 : bEnable = xDetailTable.is() && xMasterTable.is();
606 : }
607 :
608 : // only enable the button if there is a relation between both tables
609 0 : m_aRelationDetailColumns.realloc( 0 );
610 0 : m_aRelationMasterColumns.realloc( 0 );
611 0 : if ( bEnable )
612 : {
613 0 : bEnable = getExistingRelation( xDetailTable, xMasterTable, m_aRelationDetailColumns, m_aRelationMasterColumns );
614 : SAL_WARN_IF( m_aRelationMasterColumns.getLength() != m_aRelationDetailColumns.getLength(),
615 : "extensions.propctrlr",
616 : "FormLinkDialog::initializeSuggest: nonsense!" );
617 0 : if ( m_aRelationMasterColumns.getLength() == 0 )
618 : { // okay, there is no relation "pointing" (via a foreign key) from the detail table to the master table
619 : // but perhaps the other way round (would make less sense, but who knows ...)
620 0 : bEnable = getExistingRelation( xMasterTable, xDetailTable, m_aRelationMasterColumns, m_aRelationDetailColumns );
621 : }
622 : }
623 :
624 : // only enable the button if the relation contains at most 4 field pairs
625 0 : if ( bEnable )
626 : {
627 0 : bEnable = ( m_aRelationMasterColumns.getLength() <= 4 );
628 : }
629 :
630 0 : m_pSuggest->Enable( bEnable );
631 : }
632 0 : catch( const Exception& )
633 : {
634 : OSL_FAIL( "FormLinkDialog::initializeSuggest: caught an exception!" );
635 0 : }
636 : }
637 :
638 :
639 0 : IMPL_LINK( FormLinkDialog, OnSuggest, void*, /*_pNotInterestedIn*/ )
640 : {
641 0 : initializeFieldRowsFrom( m_aRelationDetailColumns, m_aRelationMasterColumns );
642 0 : return 0L;
643 : }
644 :
645 :
646 0 : IMPL_LINK( FormLinkDialog, OnFieldChanged, FieldLinkRow*, /*_pRow*/ )
647 : {
648 0 : updateOkButton();
649 0 : return 0L;
650 : }
651 :
652 :
653 0 : IMPL_LINK( FormLinkDialog, OnInitialize, void*, /*_pNotInterestedIn*/ )
654 : {
655 0 : initializeColumnLabels();
656 0 : initializeFieldLists();
657 0 : initializeLinks();
658 0 : initializeSuggest();
659 0 : return 0L;
660 : }
661 :
662 12 : } // namespace pcr
663 :
664 :
665 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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