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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 "connectivity/dbmetadata.hxx"
22 : #include "connectivity/dbexception.hxx"
23 : #include "connectivity/DriversConfig.hxx"
24 : #include "resource/common_res.hrc"
25 : #include "resource/sharedresources.hxx"
26 :
27 : #include <com/sun/star/lang/IllegalArgumentException.hpp>
28 : #include <com/sun/star/container/XChild.hpp>
29 : #include <com/sun/star/beans/XPropertySet.hpp>
30 : #include <com/sun/star/beans/PropertyValue.hpp>
31 : #include <com/sun/star/beans/XPropertySetInfo.hpp>
32 : #include <com/sun/star/sdb/BooleanComparisonMode.hpp>
33 : #include <com/sun/star/sdbc/XDatabaseMetaData2.hpp>
34 : #include <com/sun/star/sdbcx/XUsersSupplier.hpp>
35 : #include <com/sun/star/sdbcx/XDataDefinitionSupplier.hpp>
36 : #include <com/sun/star/sdbc/XDriverAccess.hpp>
37 : #include <com/sun/star/sdbc/DriverManager.hpp>
38 :
39 : #include <tools/diagnose_ex.h>
40 : #include <comphelper/namedvaluecollection.hxx>
41 : #include <comphelper/processfactory.hxx>
42 : #include <sal/macros.h>
43 :
44 : #include <boost/optional.hpp>
45 :
46 :
47 : namespace dbtools
48 : {
49 :
50 :
51 : using ::com::sun::star::uno::Reference;
52 : using ::com::sun::star::sdbc::XConnection;
53 : using ::com::sun::star::sdbc::XDatabaseMetaData;
54 : using ::com::sun::star::sdbc::XDatabaseMetaData2;
55 : using ::com::sun::star::lang::IllegalArgumentException;
56 : using ::com::sun::star::uno::Exception;
57 : using ::com::sun::star::uno::Any;
58 : using ::com::sun::star::uno::XComponentContext;
59 : using ::com::sun::star::container::XChild;
60 : using ::com::sun::star::uno::UNO_QUERY_THROW;
61 : using ::com::sun::star::beans::XPropertySet;
62 : using ::com::sun::star::uno::Sequence;
63 : using ::com::sun::star::beans::PropertyValue;
64 : using ::com::sun::star::beans::XPropertySetInfo;
65 : using ::com::sun::star::uno::UNO_QUERY;
66 : using ::com::sun::star::sdbcx::XUsersSupplier;
67 : using ::com::sun::star::sdbcx::XDataDefinitionSupplier;
68 : using ::com::sun::star::sdbc::XDriverAccess;
69 : using ::com::sun::star::sdbc::DriverManager;
70 : using ::com::sun::star::sdbc::XDriverManager2;
71 : using ::com::sun::star::uno::UNO_SET_THROW;
72 :
73 : namespace BooleanComparisonMode = ::com::sun::star::sdb::BooleanComparisonMode;
74 :
75 :
76 : //= DatabaseMetaData_Impl
77 :
78 0 : struct DatabaseMetaData_Impl
79 : {
80 : Reference< XConnection > xConnection;
81 : Reference< XDatabaseMetaData > xConnectionMetaData;
82 : ::connectivity::DriversConfig aDriverConfig;
83 :
84 : ::boost::optional< OUString > sCachedIdentifierQuoteString;
85 : ::boost::optional< OUString > sCachedCatalogSeparator;
86 :
87 0 : DatabaseMetaData_Impl()
88 : :xConnection()
89 : ,xConnectionMetaData()
90 : ,aDriverConfig( ::comphelper::getProcessComponentContext() )
91 : ,sCachedIdentifierQuoteString()
92 0 : ,sCachedCatalogSeparator()
93 : {
94 0 : }
95 : };
96 :
97 :
98 : namespace
99 : {
100 :
101 0 : static void lcl_construct( DatabaseMetaData_Impl& _metaDataImpl, const Reference< XConnection >& _connection )
102 : {
103 0 : _metaDataImpl.xConnection = _connection;
104 0 : if ( !_metaDataImpl.xConnection.is() )
105 0 : return;
106 :
107 0 : _metaDataImpl.xConnectionMetaData = _connection->getMetaData();
108 0 : if ( !_metaDataImpl.xConnectionMetaData.is() )
109 0 : throw IllegalArgumentException();
110 : }
111 :
112 :
113 0 : static void lcl_checkConnected( const DatabaseMetaData_Impl& _metaDataImpl )
114 : {
115 0 : if ( !_metaDataImpl.xConnection.is() || !_metaDataImpl.xConnectionMetaData.is() )
116 : {
117 0 : ::connectivity::SharedResources aResources;
118 0 : const OUString sError( aResources.getResourceString(STR_NO_CONNECTION_GIVEN));
119 0 : throwSQLException( sError, SQL_CONNECTION_DOES_NOT_EXIST, NULL );
120 : }
121 0 : }
122 :
123 :
124 0 : static bool lcl_getDriverSetting( const sal_Char* _asciiName, const DatabaseMetaData_Impl& _metaData, Any& _out_setting )
125 : {
126 0 : lcl_checkConnected( _metaData );
127 0 : const ::comphelper::NamedValueCollection& rDriverMetaData = _metaData.aDriverConfig.getMetaData( _metaData.xConnectionMetaData->getURL() );
128 0 : if ( !rDriverMetaData.has( _asciiName ) )
129 0 : return false;
130 0 : _out_setting = rDriverMetaData.get( _asciiName );
131 0 : return true;
132 : }
133 :
134 :
135 0 : static bool lcl_getConnectionSetting( const sal_Char* _asciiName, const DatabaseMetaData_Impl& _metaData, Any& _out_setting )
136 : {
137 : try
138 : {
139 0 : Reference< XChild > xConnectionAsChild( _metaData.xConnection, UNO_QUERY );
140 0 : if ( xConnectionAsChild.is() )
141 : {
142 0 : Reference< XPropertySet > xDataSource( xConnectionAsChild->getParent(), UNO_QUERY_THROW );
143 : Reference< XPropertySet > xDataSourceSettings(
144 0 : xDataSource->getPropertyValue("Settings"),
145 0 : UNO_QUERY_THROW );
146 :
147 0 : _out_setting = xDataSourceSettings->getPropertyValue( OUString::createFromAscii( _asciiName ) );
148 : }
149 : else
150 : {
151 0 : Reference< XDatabaseMetaData2 > xExtendedMetaData( _metaData.xConnectionMetaData, UNO_QUERY_THROW );
152 0 : ::comphelper::NamedValueCollection aSettings( xExtendedMetaData->getConnectionInfo() );
153 0 : _out_setting = aSettings.get( _asciiName );
154 0 : return _out_setting.hasValue();
155 : }
156 0 : return true;
157 : }
158 0 : catch( const Exception& )
159 : {
160 : DBG_UNHANDLED_EXCEPTION();
161 : }
162 0 : return false;
163 : }
164 :
165 :
166 0 : static const OUString& lcl_getConnectionStringSetting(
167 : const DatabaseMetaData_Impl& _metaData, ::boost::optional< OUString >& _cachedSetting,
168 : OUString (SAL_CALL XDatabaseMetaData::*_getter)() )
169 : {
170 0 : if ( !_cachedSetting )
171 : {
172 0 : lcl_checkConnected( _metaData );
173 : try
174 : {
175 0 : _cachedSetting.reset( (_metaData.xConnectionMetaData.get()->*_getter)() );
176 : }
177 0 : catch( const Exception& ) { DBG_UNHANDLED_EXCEPTION(); }
178 : }
179 0 : return *_cachedSetting;
180 : }
181 : }
182 :
183 :
184 : //= DatabaseMetaData
185 :
186 :
187 0 : DatabaseMetaData::DatabaseMetaData()
188 0 : :m_pImpl( new DatabaseMetaData_Impl )
189 : {
190 0 : }
191 :
192 :
193 0 : DatabaseMetaData::DatabaseMetaData( const Reference< XConnection >& _connection )
194 0 : :m_pImpl( new DatabaseMetaData_Impl )
195 : {
196 0 : lcl_construct( *m_pImpl, _connection );
197 0 : }
198 :
199 :
200 0 : DatabaseMetaData::DatabaseMetaData( const DatabaseMetaData& _copyFrom )
201 0 : :m_pImpl( new DatabaseMetaData_Impl( *_copyFrom.m_pImpl ) )
202 : {
203 0 : }
204 :
205 :
206 0 : DatabaseMetaData& DatabaseMetaData::operator=( const DatabaseMetaData& _copyFrom )
207 : {
208 0 : if ( this == &_copyFrom )
209 0 : return *this;
210 :
211 0 : m_pImpl.reset( new DatabaseMetaData_Impl( *_copyFrom.m_pImpl ) );
212 0 : return *this;
213 : }
214 :
215 :
216 0 : DatabaseMetaData::~DatabaseMetaData()
217 : {
218 0 : }
219 :
220 :
221 0 : bool DatabaseMetaData::isConnected() const
222 : {
223 0 : return m_pImpl->xConnection.is();
224 : }
225 :
226 :
227 0 : bool DatabaseMetaData::supportsSubqueriesInFrom() const
228 : {
229 0 : lcl_checkConnected( *m_pImpl );
230 :
231 0 : bool supportsSubQueries = false;
232 : try
233 : {
234 0 : sal_Int32 maxTablesInselect = m_pImpl->xConnectionMetaData->getMaxTablesInSelect();
235 0 : supportsSubQueries = ( maxTablesInselect > 1 ) || ( maxTablesInselect == 0 );
236 : // TODO: is there a better way to determine this? The above is not really true. More precise,
237 : // it's a *very* generous heuristics ...
238 : }
239 0 : catch( const Exception& )
240 : {
241 : DBG_UNHANDLED_EXCEPTION();
242 : }
243 0 : return supportsSubQueries;
244 : }
245 :
246 :
247 0 : bool DatabaseMetaData::supportsPrimaryKeys() const
248 : {
249 0 : lcl_checkConnected( *m_pImpl );
250 :
251 0 : bool doesSupportPrimaryKeys = false;
252 : try
253 : {
254 0 : Any setting;
255 0 : if ( !( lcl_getConnectionSetting( "PrimaryKeySupport", *m_pImpl, setting ) )
256 0 : || !( setting >>= doesSupportPrimaryKeys )
257 : )
258 0 : doesSupportPrimaryKeys = m_pImpl->xConnectionMetaData->supportsCoreSQLGrammar();
259 : }
260 0 : catch( const Exception& )
261 : {
262 : DBG_UNHANDLED_EXCEPTION();
263 : }
264 0 : return doesSupportPrimaryKeys;
265 : }
266 :
267 :
268 0 : const OUString& DatabaseMetaData::getIdentifierQuoteString() const
269 : {
270 0 : return lcl_getConnectionStringSetting( *m_pImpl, m_pImpl->sCachedIdentifierQuoteString, &XDatabaseMetaData::getIdentifierQuoteString );
271 : }
272 :
273 :
274 0 : const OUString& DatabaseMetaData::getCatalogSeparator() const
275 : {
276 0 : return lcl_getConnectionStringSetting( *m_pImpl, m_pImpl->sCachedCatalogSeparator, &XDatabaseMetaData::getCatalogSeparator );
277 : }
278 :
279 :
280 0 : bool DatabaseMetaData::restrictIdentifiersToSQL92() const
281 : {
282 0 : lcl_checkConnected( *m_pImpl );
283 :
284 0 : bool restrict( false );
285 0 : Any setting;
286 0 : if ( lcl_getConnectionSetting( "EnableSQL92Check", *m_pImpl, setting ) )
287 0 : OSL_VERIFY( setting >>= restrict );
288 0 : return restrict;
289 : }
290 :
291 :
292 0 : bool DatabaseMetaData::generateASBeforeCorrelationName() const
293 : {
294 0 : bool doGenerate( true );
295 0 : Any setting;
296 0 : if ( lcl_getConnectionSetting( "GenerateASBeforeCorrelationName", *m_pImpl, setting ) )
297 0 : OSL_VERIFY( setting >>= doGenerate );
298 0 : return doGenerate;
299 : }
300 :
301 0 : bool DatabaseMetaData::shouldEscapeDateTime() const
302 : {
303 0 : bool doGenerate( true );
304 0 : Any setting;
305 0 : if ( lcl_getConnectionSetting( "EscapeDateTime", *m_pImpl, setting ) )
306 0 : OSL_VERIFY( setting >>= doGenerate );
307 0 : return doGenerate;
308 : }
309 :
310 0 : bool DatabaseMetaData::isAutoIncrementPrimaryKey() const
311 : {
312 0 : bool is( true );
313 0 : Any setting;
314 0 : if ( lcl_getDriverSetting( "AutoIncrementIsPrimaryKey", *m_pImpl, setting ) )
315 0 : OSL_VERIFY( setting >>= is );
316 0 : return is;
317 : }
318 :
319 0 : sal_Int32 DatabaseMetaData::getBooleanComparisonMode() const
320 : {
321 0 : sal_Int32 mode( BooleanComparisonMode::EQUAL_INTEGER );
322 0 : Any setting;
323 0 : if ( lcl_getConnectionSetting( "BooleanComparisonMode", *m_pImpl, setting ) )
324 0 : OSL_VERIFY( setting >>= mode );
325 0 : return mode;
326 : }
327 :
328 0 : bool DatabaseMetaData::supportsRelations() const
329 : {
330 0 : lcl_checkConnected( *m_pImpl );
331 0 : bool bSupport = false;
332 : try
333 : {
334 0 : bSupport = m_pImpl->xConnectionMetaData->supportsIntegrityEnhancementFacility();
335 : }
336 0 : catch( const Exception& )
337 : {
338 : DBG_UNHANDLED_EXCEPTION();
339 : }
340 : try
341 : {
342 0 : if ( !bSupport )
343 : {
344 0 : const OUString url = m_pImpl->xConnectionMetaData->getURL();
345 0 : char pMySQL[] = "sdbc:mysql";
346 0 : bSupport = url.matchAsciiL(pMySQL,(sizeof(pMySQL)/sizeof(pMySQL[0]))-1);
347 : }
348 : }
349 0 : catch( const Exception& )
350 : {
351 : DBG_UNHANDLED_EXCEPTION();
352 : }
353 0 : return bSupport;
354 : }
355 :
356 :
357 0 : bool DatabaseMetaData::supportsColumnAliasInOrderBy() const
358 : {
359 0 : bool doGenerate( true );
360 0 : Any setting;
361 0 : if ( lcl_getConnectionSetting( "ColumnAliasInOrderBy", *m_pImpl, setting ) )
362 0 : OSL_VERIFY( setting >>= doGenerate );
363 0 : return doGenerate;
364 : }
365 :
366 :
367 0 : bool DatabaseMetaData::supportsUserAdministration( const Reference<XComponentContext>& _rContext ) const
368 : {
369 0 : lcl_checkConnected( *m_pImpl );
370 :
371 0 : bool isSupported( false );
372 : try
373 : {
374 : // find the XUsersSupplier interface
375 : // - either directly at the connection
376 0 : Reference< XUsersSupplier > xUsersSupp( m_pImpl->xConnection, UNO_QUERY );
377 0 : if ( !xUsersSupp.is() )
378 : {
379 : // - or at the driver manager
380 0 : Reference< XDriverManager2 > xDriverManager = DriverManager::create( _rContext );
381 0 : Reference< XDataDefinitionSupplier > xDriver( xDriverManager->getDriverByURL( m_pImpl->xConnectionMetaData->getURL() ), UNO_QUERY );
382 0 : if ( xDriver.is() )
383 0 : xUsersSupp.set( xDriver->getDataDefinitionByConnection( m_pImpl->xConnection ), UNO_QUERY );
384 : }
385 :
386 0 : isSupported = ( xUsersSupp.is() && xUsersSupp->getUsers().is() );
387 : }
388 0 : catch( const Exception& )
389 : {
390 : DBG_UNHANDLED_EXCEPTION();
391 : }
392 0 : return isSupported;
393 : }
394 :
395 :
396 0 : bool DatabaseMetaData::displayEmptyTableFolders() const
397 : {
398 0 : bool doDisplay( true );
399 : #ifdef IMPLEMENTED_LATER
400 : Any setting;
401 : if ( lcl_getConnectionSetting( "DisplayEmptyTableFolders", *m_pImpl, setting ) )
402 : OSL_VERIFY( setting >>= doDisplay );
403 : #else
404 : try
405 : {
406 0 : Reference< XDatabaseMetaData > xMeta( m_pImpl->xConnectionMetaData, UNO_SET_THROW );
407 0 : OUString sConnectionURL( xMeta->getURL() );
408 0 : doDisplay = sConnectionURL.startsWith( "sdbc:mysql:mysqlc" );
409 : }
410 0 : catch( const Exception& )
411 : {
412 : DBG_UNHANDLED_EXCEPTION();
413 : }
414 : #endif
415 0 : return doDisplay;
416 : }
417 :
418 0 : bool DatabaseMetaData::supportsThreads() const
419 : {
420 0 : bool bSupported( true );
421 : try
422 : {
423 0 : Reference< XDatabaseMetaData > xMeta( m_pImpl->xConnectionMetaData, UNO_SET_THROW );
424 0 : OUString sConnectionURL( xMeta->getURL() );
425 0 : bSupported = !sConnectionURL.startsWith( "sdbc:mysql:mysqlc" );
426 : }
427 0 : catch( const Exception& )
428 : {
429 : DBG_UNHANDLED_EXCEPTION();
430 : }
431 0 : return bSupported;
432 : }
433 :
434 :
435 : } // namespace dbtools
436 :
437 :
438 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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