INTEGRATION: CWS qiq (1.1.2); FILE ADDED

2006/05/17 11:52:07 fs 1.1.2.4: #i51143# +isConnection/reset
2006/05/17 05:19:24 fs 1.1.2.3: default construction
2006/05/17 05:08:22 fs 1.1.2.2: copy construction / assignment
2006/05/16 20:08:45 fs 1.1.2.1: encapsulates application-level database meta data

1 files changed, 163 insertions, 0 deletions

diff --git a/connectivity/source/commontools/dbmetadata.cxx b/connectivity/source/commontools/dbmetadata.cxx
new file mode 100644
index 000000000000..af330ae93d46
--- /dev/null
+++ b/connectivity/source/commontools/dbmetadata.cxx
@@ -0,0 +1,163 @@
+/*************************************************************************
+ *
+ *  OpenOffice.org - a multi-platform office productivity suite
+ *
+ *  $RCSfile: dbmetadata.cxx,v $
+ *
+ *  $Revision: 1.2 $
+ *
+ *  last change: $Author: obo $ $Date: 2006-07-10 14:20:08 $
+ *
+ *  The Contents of this file are made available subject to
+ *  the terms of GNU Lesser General Public License Version 2.1.
+ *
+ *
+ *    GNU Lesser General Public License Version 2.1
+ *    =============================================
+ *    Copyright 2005 by Sun Microsystems, Inc.
+ *    901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ *    This library is free software; you can redistribute it and/or
+ *    modify it under the terms of the GNU Lesser General Public
+ *    License version 2.1, as published by the Free Software Foundation.
+ *
+ *    This library is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *    Lesser General Public License for more details.
+ *
+ *    You should have received a copy of the GNU Lesser General Public
+ *    License along with this library; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *    MA  02111-1307  USA
+ *
+ ************************************************************************/
+
+#ifndef CONNECTIVITY_INC_CONNECTIVITY_DBMETADATA_HXX
+#include <connectivity/dbmetadata.hxx>
+#endif
+#ifndef _DBHELPER_DBEXCEPTION_HXX_
+#include <connectivity/dbexception.hxx>
+#endif
+
+/** === begin UNO includes === **/
+#ifndef _COM_SUN_STAR_LANG_ILLEGALARGUMENTEXCEPTION_HPP_
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+#endif
+/** === end UNO includes === **/
+
+#ifndef TOOLS_DIAGNOSE_EX_H
+#include <tools/diagnose_ex.h>
+#endif
+
+//........................................................................
+namespace dbtools
+{
+//........................................................................
+
+    /** === begin UNO using === **/
+    using ::com::sun::star::uno::Reference;
+    using ::com::sun::star::sdbc::XConnection;
+    using ::com::sun::star::sdbc::XConnection;
+    using ::com::sun::star::sdbc::XDatabaseMetaData;
+    using ::com::sun::star::lang::IllegalArgumentException;
+    using ::com::sun::star::uno::Exception;
+    /** === end UNO using === **/
+
+    //====================================================================
+    //= DatabaseMetaData_Impl
+    //====================================================================
+    struct DatabaseMetaData_Impl
+    {
+        Reference< XConnection >        xConnection;
+        Reference< XDatabaseMetaData >  xConnectionMetaData;
+    };
+
+    //--------------------------------------------------------------------
+    namespace
+    {
+        static void lcl_construct( DatabaseMetaData_Impl& _metaDataImpl, const Reference< XConnection >& _connection )
+        {
+            _metaDataImpl.xConnection = _connection;
+            if ( !_metaDataImpl.xConnection.is() )
+                return;
+
+            _metaDataImpl.xConnectionMetaData = _connection->getMetaData();
+            if ( !_metaDataImpl.xConnectionMetaData.is() )
+                throw IllegalArgumentException();
+        }
+
+        static void lcl_checkConnected( DatabaseMetaData_Impl& _metaDataImpl )
+        {
+            if ( !_metaDataImpl.xConnection.is() )
+                throwSQLException( "not connected", SQL_CONNECTION_DOES_NOT_EXIST, NULL );
+        }
+    }
+
+    //====================================================================
+    //= DatabaseMetaData
+    //====================================================================
+    //--------------------------------------------------------------------
+    DatabaseMetaData::DatabaseMetaData()
+        :m_pImpl( new DatabaseMetaData_Impl )
+    {
+    }
+
+    //--------------------------------------------------------------------
+    DatabaseMetaData::DatabaseMetaData( const Reference< XConnection >& _connection )
+        :m_pImpl( new DatabaseMetaData_Impl )
+    {
+        lcl_construct( *m_pImpl, _connection );
+    }
+
+    //--------------------------------------------------------------------
+    DatabaseMetaData::DatabaseMetaData( const DatabaseMetaData& _copyFrom )
+        :m_pImpl( new DatabaseMetaData_Impl( *_copyFrom.m_pImpl ) )
+    {
+    }
+
+    //--------------------------------------------------------------------
+    DatabaseMetaData& DatabaseMetaData::operator=( const DatabaseMetaData& _copyFrom )
+    {
+        if ( this == &_copyFrom )
+            return *this;
+
+        m_pImpl.reset( new DatabaseMetaData_Impl( *_copyFrom.m_pImpl ) );
+        return *this;
+    }
+
+    //--------------------------------------------------------------------
+    DatabaseMetaData::~DatabaseMetaData()
+    {
+    }
+
+    //--------------------------------------------------------------------
+    bool DatabaseMetaData::isConnected() const
+    {
+        return m_pImpl->xConnection.is();
+    }
+
+    //--------------------------------------------------------------------
+    bool SAL_CALL DatabaseMetaData::supportsSubqueriesInFrom() const
+    {
+        lcl_checkConnected( *m_pImpl );
+
+        bool supportsSubQueries = false;
+        try
+        {
+            sal_Int32 maxTablesInselect = m_pImpl->xConnectionMetaData->getMaxTablesInSelect();
+            supportsSubQueries = ( maxTablesInselect > 1 ) || ( maxTablesInselect == 0 );
+            // TODO: is there a better way to determine this? The above is not really true. More precise,
+            // it's a *very* generous heuristics ...
+        }
+        catch( const Exception& )
+        {
+            DBG_UNHANDLED_EXCEPTION();
+        }
+        return supportsSubQueries;
+    }
+
+//........................................................................
+} // namespace dbtools
+//........................................................................
+