Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 301 insertions, 0 deletions

diff --git a/connectivity/source/commontools/statementcomposer.cxx b/connectivity/source/commontools/statementcomposer.cxx
new file mode 100644
index 000000000..27c1c05f1
--- /dev/null
+++ b/connectivity/source/commontools/statementcomposer.cxx
@@ -0,0 +1,301 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <connectivity/statementcomposer.hxx>
+
+#include <connectivity/dbtools.hxx>
+
+#include <com/sun/star/sdb/CommandType.hpp>
+#include <com/sun/star/lang/NullPointerException.hpp>
+#include <com/sun/star/lang/XComponent.hpp>
+#include <com/sun/star/sdb/XQueriesSupplier.hpp>
+#include <com/sun/star/sdbc/SQLException.hpp>
+#include <com/sun/star/lang/XMultiServiceFactory.hpp>
+#include <com/sun/star/sdb/XSingleSelectQueryComposer.hpp>
+#include <com/sun/star/sdbc/XConnection.hpp>
+
+#include <unotools/sharedunocomponent.hxx>
+#include <tools/diagnose_ex.h>
+#include <comphelper/property.hxx>
+
+
+namespace dbtools
+{
+
+
+    using ::com::sun::star::uno::Reference;
+    using ::com::sun::star::sdbc::XConnection;
+    using ::com::sun::star::sdb::XSingleSelectQueryComposer;
+    using ::com::sun::star::lang::NullPointerException;
+    using ::com::sun::star::uno::Exception;
+    using ::com::sun::star::lang::XComponent;
+    using ::com::sun::star::uno::UNO_QUERY_THROW;
+    using ::com::sun::star::sdb::XQueriesSupplier;
+    using ::com::sun::star::container::XNameAccess;
+    using ::com::sun::star::beans::XPropertySet;
+    using ::com::sun::star::lang::XMultiServiceFactory;
+    using ::com::sun::star::sdbc::SQLException;
+
+    namespace CommandType = ::com::sun::star::sdb::CommandType;
+
+    struct StatementComposer_Data
+    {
+        const Reference< XConnection >          xConnection;
+        Reference< XSingleSelectQueryComposer > xComposer;
+        OUString                         sCommand;
+        OUString                         sFilter;
+        OUString                         sHavingClause;
+        OUString                         sOrder;
+        sal_Int32                               nCommandType;
+        bool                                bEscapeProcessing;
+        bool                                    bComposerDirty;
+        bool                                    bDisposeComposer;
+
+        explicit StatementComposer_Data( const Reference< XConnection >& _rxConnection )
+            :xConnection( _rxConnection )
+            ,nCommandType( CommandType::COMMAND )
+            ,bEscapeProcessing( true )
+            ,bComposerDirty( true )
+            ,bDisposeComposer( true )
+        {
+            if ( !_rxConnection.is() )
+                throw NullPointerException();
+        }
+    };
+
+
+    namespace
+    {
+
+        void    lcl_resetComposer( StatementComposer_Data& _rData )
+        {
+            if ( _rData.bDisposeComposer && _rData.xComposer.is() )
+            {
+                try
+                {
+                    Reference< XComponent > xComposerComponent( _rData.xComposer, UNO_QUERY_THROW );
+                    xComposerComponent->dispose();
+                }
+                catch( const Exception& )
+                {
+                    DBG_UNHANDLED_EXCEPTION("connectivity.commontools");
+                }
+            }
+            _rData.xComposer.clear();
+        }
+
+
+        bool    lcl_ensureUpToDateComposer_nothrow( StatementComposer_Data& _rData )
+        {
+            if ( !_rData.bComposerDirty )
+                return _rData.xComposer.is();
+            lcl_resetComposer( _rData );
+
+            try
+            {
+                OUString sStatement;
+                switch ( _rData.nCommandType )
+                {
+                    case CommandType::COMMAND:
+                        if ( _rData.bEscapeProcessing )
+                            sStatement = _rData.sCommand;
+                        // (in case of no escape processing  we assume a not parseable statement)
+                        break;
+
+                    case CommandType::TABLE:
+                    {
+                        if ( _rData.sCommand.isEmpty() )
+                            break;
+
+                        sStatement = "SELECT * FROM ";
+
+                        OUString sCatalog, sSchema, sTable;
+                        qualifiedNameComponents( _rData.xConnection->getMetaData(), _rData.sCommand, sCatalog, sSchema, sTable, EComposeRule::InDataManipulation );
+
+                        sStatement += composeTableNameForSelect( _rData.xConnection, sCatalog, sSchema, sTable );
+                    }
+                    break;
+
+                    case CommandType::QUERY:
+                    {
+                        // ask the connection for the query
+                        Reference< XQueriesSupplier > xSupplyQueries( _rData.xConnection, UNO_QUERY_THROW );
+                        Reference< XNameAccess >      xQueries( xSupplyQueries->getQueries(), css::uno::UNO_SET_THROW );
+
+                        if ( !xQueries->hasByName( _rData.sCommand ) )
+                            break;
+
+                        Reference< XPropertySet > xQuery( xQueries->getByName( _rData.sCommand ), UNO_QUERY_THROW );
+
+                        //  a native query ?
+                        bool bQueryEscapeProcessing = false;
+                        xQuery->getPropertyValue("EscapeProcessing") >>= bQueryEscapeProcessing;
+                        if ( !bQueryEscapeProcessing )
+                            break;
+
+                        // the command used by the query
+                        xQuery->getPropertyValue("Command") >>= sStatement;
+                        if ( sStatement.isEmpty() )
+                            break;
+
+                        // use a composer to build a statement from the query filter/order props
+                        Reference< XMultiServiceFactory > xFactory( _rData.xConnection, UNO_QUERY_THROW );
+                        ::utl::SharedUNOComponent< XSingleSelectQueryComposer > xComposer;
+                        xComposer.set(
+                            xFactory->createInstance("com.sun.star.sdb.SingleSelectQueryComposer"),
+                            UNO_QUERY_THROW
+                        );
+
+                        // the "basic" statement
+                        xComposer->setElementaryQuery( sStatement );
+
+                        // the sort order
+                        static const OUStringLiteral sPropOrder( u"Order" );
+                        if ( ::comphelper::hasProperty( sPropOrder, xQuery ) )
+                        {
+                            OUString sOrder;
+                            OSL_VERIFY( xQuery->getPropertyValue( sPropOrder ) >>= sOrder );
+                            xComposer->setOrder( sOrder );
+                        }
+
+                        // the filter
+                        bool bApplyFilter = true;
+                        static const OUStringLiteral sPropApply( u"ApplyFilter" );
+                        if ( ::comphelper::hasProperty( sPropApply, xQuery ) )
+                        {
+                            OSL_VERIFY( xQuery->getPropertyValue( sPropApply ) >>= bApplyFilter );
+                        }
+
+                        if ( bApplyFilter )
+                        {
+                            OUString sFilter;
+                            OSL_VERIFY( xQuery->getPropertyValue("Filter") >>= sFilter );
+                            xComposer->setFilter( sFilter );
+                            OSL_VERIFY( xQuery->getPropertyValue("HavingClause") >>= sFilter );
+                            xComposer->setHavingClause( sFilter );
+                        }
+
+                        // the composed statement
+                        sStatement = xComposer->getQuery();
+                    }
+                    break;
+
+                    default:
+                        OSL_FAIL("lcl_ensureUpToDateComposer_nothrow: no table, no query, no statement - what else ?!");
+                        break;
+                }
+
+                if ( !sStatement.isEmpty() )
+                {
+                    // create a composer
+                    Reference< XMultiServiceFactory > xFactory( _rData.xConnection, UNO_QUERY_THROW );
+                    Reference< XSingleSelectQueryComposer > xComposer( xFactory->createInstance("com.sun.star.sdb.SingleSelectQueryComposer"),
+                        UNO_QUERY_THROW );
+                    xComposer->setElementaryQuery( sStatement );
+
+                    // append sort/filter
+                    xComposer->setOrder( _rData.sOrder );
+                    xComposer->setFilter( _rData.sFilter );
+                    xComposer->setHavingClause( _rData.sHavingClause );
+
+                    sStatement = xComposer->getQuery();
+
+                    _rData.xComposer = xComposer;
+                    _rData.bComposerDirty = false;
+                }
+            }
+            catch( const SQLException& )
+            {
+                // allowed to leave here
+            }
+            catch( const Exception& )
+            {
+                DBG_UNHANDLED_EXCEPTION("connectivity.commontools");
+            }
+
+            return _rData.xComposer.is();
+        }
+    }
+
+    StatementComposer::StatementComposer( const Reference< XConnection >& _rxConnection,
+        const OUString&  _rCommand, const sal_Int32 _nCommandType, const bool _bEscapeProcessing )
+        :m_pData( new StatementComposer_Data( _rxConnection ) )
+    {
+        OSL_PRECOND( _rxConnection.is(), "StatementComposer::StatementComposer: illegal connection!" );
+        m_pData->sCommand = _rCommand;
+        m_pData->nCommandType = _nCommandType;
+        m_pData->bEscapeProcessing = _bEscapeProcessing;
+    }
+
+
+    StatementComposer::~StatementComposer()
+    {
+        lcl_resetComposer( *m_pData );
+    }
+
+
+    void StatementComposer::setDisposeComposer( bool _bDoDispose )
+    {
+        m_pData->bDisposeComposer = _bDoDispose;
+    }
+
+
+    void StatementComposer::setFilter( const OUString& _rFilter )
+    {
+        m_pData->sFilter = _rFilter;
+        m_pData->bComposerDirty = true;
+    }
+
+
+    void StatementComposer::setHavingClause( const OUString& _rHavingClause )
+    {
+        m_pData->sHavingClause = _rHavingClause;
+        m_pData->bComposerDirty = true;
+    }
+
+
+    void StatementComposer::setOrder( const OUString& _rOrder )
+    {
+        m_pData->sOrder = _rOrder;
+        m_pData->bComposerDirty = true;
+    }
+
+
+    Reference< XSingleSelectQueryComposer > const & StatementComposer::getComposer()
+    {
+        lcl_ensureUpToDateComposer_nothrow( *m_pData );
+        return m_pData->xComposer;
+    }
+
+
+    OUString StatementComposer::getQuery()
+    {
+        if ( lcl_ensureUpToDateComposer_nothrow( *m_pData ) )
+        {
+            return m_pData->xComposer->getQuery();
+        }
+
+        return OUString();
+    }
+
+
+} // namespace dbtools
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */