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Diffstat (limited to 'connectivity/source/drivers/file/fanalyzer.cxx')
| -rw-r--r-- | connectivity/source/drivers/file/fanalyzer.cxx | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/connectivity/source/drivers/file/fanalyzer.cxx b/connectivity/source/drivers/file/fanalyzer.cxx new file mode 100644 index 000000000..a0d1305f6 --- /dev/null +++ b/connectivity/source/drivers/file/fanalyzer.cxx @@ -0,0 +1,207 @@ +/* -*- 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 <file/fanalyzer.hxx> +#include <connectivity/sqlparse.hxx> +#include <tools/debug.hxx> +#include <connectivity/sqlnode.hxx> +#include <file/FConnection.hxx> +#include <strings.hrc> + +using namespace ::connectivity; +using namespace ::connectivity::file; +using namespace ::com::sun::star::uno; +using namespace ::com::sun::star::beans; +using namespace ::com::sun::star::sdbc; +using namespace ::com::sun::star::container; + +OSQLAnalyzer::OSQLAnalyzer(OConnection* _pConnection) + :m_pConnection(_pConnection) + ,m_bHasSelectionCode(false) + ,m_bSelectionFirstTime(true) +{ + m_aCompiler = new OPredicateCompiler(this); + m_aInterpreter = new OPredicateInterpreter(m_aCompiler); +} + + +OSQLAnalyzer::~OSQLAnalyzer() +{ +} + + +void OSQLAnalyzer::start(OSQLParseNode const * pSQLParseNode) +{ + if (SQL_ISRULE(pSQLParseNode,select_statement)) + { + DBG_ASSERT(pSQLParseNode->count() >= 4,"OFILECursor: Error in Parse Tree"); + + // check that we don't use anything other than count(*) as function + OSQLParseNode* pSelection = pSQLParseNode->getChild(2); + if ( SQL_ISRULE(pSelection,scalar_exp_commalist) ) + { + for (size_t i = 0; i < pSelection->count(); i++) + { + OSQLParseNode *pColumnRef = pSelection->getChild(i)->getChild(0); + if ( ( SQL_ISRULE(pColumnRef,set_fct_spec) && pColumnRef->count() == 4 ) + || SQL_ISRULE(pColumnRef,char_value_fct) + || SQL_ISRULE(pColumnRef,char_substring_fct) + || SQL_ISRULE(pColumnRef,position_exp) + || SQL_ISRULE(pColumnRef,fold) + || SQL_ISRULE(pColumnRef,length_exp) + || SQL_ISRULE(pColumnRef,num_value_exp) + || SQL_ISRULE(pColumnRef,term) + || SQL_ISRULE(pColumnRef,factor) + || SQL_ISRULE(pColumnRef,set_fct_spec) ) + { + ::rtl::Reference<OPredicateCompiler> pCompiler = new OPredicateCompiler(this); + pCompiler->setOrigColumns(m_aCompiler->getOrigColumns()); + ::rtl::Reference<OPredicateInterpreter> pInterpreter = new OPredicateInterpreter(pCompiler); + pCompiler->execute( pColumnRef ); + m_aSelectionEvaluations.push_back( TPredicates(pCompiler,pInterpreter) ); + } + else if ( SQL_ISRULE(pColumnRef,general_set_fct) && pColumnRef->count() != 4 ) + { + m_pConnection->throwGenericSQLException(STR_QUERY_COMPLEX_COUNT,nullptr); + } + else + { + if ( SQL_ISPUNCTUATION( pColumnRef, "*" ) + || ( SQL_ISRULE( pColumnRef, column_ref ) + && ( pColumnRef->count() == 3 ) + && ( pColumnRef->getChild(0)->getNodeType() == SQLNodeType::Name ) + && SQL_ISPUNCTUATION( pColumnRef->getChild(1), "." ) + && SQL_ISRULE( pColumnRef->getChild(2), column_val ) + && SQL_ISPUNCTUATION( pColumnRef->getChild(2)->getChild(0), "*" ) + ) + ) + { + // push one element for each column of our table + const Reference< XNameAccess > xColumnNames( m_aCompiler->getOrigColumns() ); + const Sequence< OUString > aColumnNames( xColumnNames->getElementNames() ); + for ( sal_Int32 j=0; j<aColumnNames.getLength(); ++j ) + m_aSelectionEvaluations.push_back( TPredicates() ); + } + else + m_aSelectionEvaluations.push_back( TPredicates() ); + } + } + } + } + + m_aCompiler->start(pSQLParseNode); +} + + +void OSQLAnalyzer::bindRow(OCodeList& rCodeList,const OValueRefRow& _pRow) +{ + for (auto const& code : rCodeList) + { + OOperandAttr* pAttr = dynamic_cast<OOperandAttr*>(code.get()); + if (pAttr) + { + pAttr->bindValue(_pRow); + } + } +} + +void OSQLAnalyzer::bindSelectRow(const OValueRefRow& _pRow) +{ + // first the select part + for (auto const& selectionEval : m_aSelectionEvaluations) + { + if ( selectionEval.first.is() ) + bindRow(selectionEval.first->m_aCodeList,_pRow); + } +} + +void OSQLAnalyzer::bindEvaluationRow(OValueRefRow const & _pRow) +{ + bindRow(m_aCompiler->m_aCodeList,_pRow); +} + +OOperandAttr* OSQLAnalyzer::createOperandAttr(sal_Int32 _nPos, + const Reference< XPropertySet>& _xCol) +{ + return new OOperandAttr(static_cast<sal_uInt16>(_nPos),_xCol); +} + +bool OSQLAnalyzer::hasRestriction() const +{ + return m_aCompiler->hasCode(); +} + +bool OSQLAnalyzer::hasFunctions() const +{ + if ( m_bSelectionFirstTime ) + { + m_bSelectionFirstTime = false; + for (auto const& selectionEval : m_aSelectionEvaluations) + { + if ( selectionEval.first.is() ) + { + m_bHasSelectionCode = selectionEval.first->hasCode(); + if (m_bHasSelectionCode) + break; + } + } + } + return m_bHasSelectionCode; +} + +void OSQLAnalyzer::setSelectionEvaluationResult(OValueRefRow const & _pRow,const std::vector<sal_Int32>& _rColumnMapping) +{ + sal_Int32 nPos = 1; + for (auto const& selectionEval : m_aSelectionEvaluations) + { + if ( selectionEval.second.is() ) + { + // the first column (index 0) is for convenience only. The first real select column is no 1. + sal_Int32 map = nPos; + if ( nPos < static_cast< sal_Int32 >( _rColumnMapping.size() ) ) + map = _rColumnMapping[nPos]; + if ( map > 0 ) + selectionEval.second->startSelection( (*_pRow)[map] ); + } + ++nPos; + } +} + +void OSQLAnalyzer::dispose() +{ + m_aCompiler->dispose(); + for (auto const& selectionEval : m_aSelectionEvaluations) + { + if ( selectionEval.first.is() ) + selectionEval.first->dispose(); + } +} + +void OSQLAnalyzer::setOrigColumns(const css::uno::Reference< css::container::XNameAccess>& rCols) +{ + m_aCompiler->setOrigColumns(rCols); + for (auto const& selectionEval : m_aSelectionEvaluations) + { + if ( selectionEval.first.is() ) + selectionEval.first->setOrigColumns(rCols); + } +} + + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |