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 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
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 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_connectivity.hxx"
#include "file/fcomp.hxx"
#include <tools/debug.hxx>
#include "TConnection.hxx"
#include "connectivity/sqlparse.hxx"
#include "file/fanalyzer.hxx"
#include <com/sun/star/sdbc/XColumnLocate.hpp>
#include <com/sun/star/util/DateTime.hpp>
#include <com/sun/star/util/Date.hpp>
#include <com/sun/star/util/Time.hpp>
#include "connectivity/dbexception.hxx"
#include "connectivity/dbconversion.hxx"
#include <com/sun/star/sdb/SQLFilterOperator.hpp>
#include "resource/file_res.hrc"
#include "file/FStringFunctions.hxx"
#include "file/FDateFunctions.hxx"
#include "file/FNumericFunctions.hxx"
#include "file/FConnection.hxx"
#include <com/sun/star/sdb/SQLFilterOperator.hpp>

using namespace connectivity;
using namespace connectivity::file;
using namespace com::sun::star::uno;
using namespace com::sun::star::sdbc;
using namespace com::sun::star::sdb;
using namespace ::com::sun::star::container;
using namespace ::com::sun::star::util;

DBG_NAME(OPredicateCompiler)
//------------------------------------------------------------------
OPredicateCompiler::OPredicateCompiler(OSQLAnalyzer* pAnalyzer)//,OCursor& rCurs)
					 //	: m_rCursor(rCurs)
					 : m_pAnalyzer(pAnalyzer)
					 , m_nParamCounter(0)
                     , m_bORCondition(sal_False)
{
	DBG_CTOR(OPredicateCompiler,NULL);
}

//------------------------------------------------------------------
OPredicateCompiler::~OPredicateCompiler()
{
	Clean();
	DBG_DTOR(OPredicateCompiler,NULL);
}
// -----------------------------------------------------------------------------
void OPredicateCompiler::dispose()
{
	Clean();
	m_orgColumns		= NULL;
m_xIndexes.clear();
}
//------------------------------------------------------------------
//	inline OCursor& OPredicateCompiler::Cursor() const {return m_rCursor;}
//------------------------------------------------------------------
void OPredicateCompiler::start(OSQLParseNode* pSQLParseNode)
{
	if (!pSQLParseNode)
		return;

	m_nParamCounter = 0;
	// Parse Tree analysieren (je nach Statement-Typ)
	// und Zeiger auf WHERE-Klausel setzen:
	OSQLParseNode * pWhereClause = NULL;
	OSQLParseNode * pOrderbyClause = NULL;

	if (SQL_ISRULE(pSQLParseNode,select_statement))
	{
		DBG_ASSERT(pSQLParseNode->count() >= 4,"OFILECursor: Fehler im Parse Tree");

		OSQLParseNode * pTableExp = pSQLParseNode->getChild(3);
		DBG_ASSERT(pTableExp != NULL,"Fehler im Parse Tree");
		DBG_ASSERT(SQL_ISRULE(pTableExp,table_exp)," Fehler im Parse Tree");
		DBG_ASSERT(pTableExp->count() == TABLE_EXPRESSION_CHILD_COUNT,"Fehler im 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 (sal_uInt32 i = 0; i < pSelection->count(); i++)
			{
				OSQLParseNode *pColumnRef = pSelection->getChild(i)->getChild(0);
				if ( SQL_ISRULE(pColumnRef,general_set_fct) && pColumnRef->count() != 4 )
				{
                    m_pAnalyzer->getConnection()->throwGenericSQLException(STR_QUERY_COMPLEX_COUNT,NULL);
				}
			}
		}


		pWhereClause	= pTableExp->getChild(1);
		pOrderbyClause	= pTableExp->getChild(ORDER_BY_CHILD_POS);
	}
	else if (SQL_ISRULE(pSQLParseNode,update_statement_searched))
	{
		DBG_ASSERT(pSQLParseNode->count() == 5,"OFILECursor: Fehler im Parse Tree");
		pWhereClause = pSQLParseNode->getChild(4);
	}
	else if (SQL_ISRULE(pSQLParseNode,delete_statement_searched))
	{
		DBG_ASSERT(pSQLParseNode->count() == 4,"Fehler im Parse Tree");
		pWhereClause = pSQLParseNode->getChild(3);
	}
	else
			// Anderes Statement. Keine Selektionskriterien.
		return;

	if (SQL_ISRULE(pWhereClause,where_clause))
	{
		// Wenn es aber eine where_clause ist, dann darf sie nicht leer sein:
		DBG_ASSERT(pWhereClause->count() == 2,"OFILECursor: Fehler im Parse Tree");

		OSQLParseNode * pComparisonPredicate = pWhereClause->getChild(1);
		DBG_ASSERT(pComparisonPredicate != NULL,"OFILECursor: Fehler im Parse Tree");

		execute( pComparisonPredicate );
	}
	else
	{
		// Die Where Clause ist meistens optional, d. h. es koennte sich auch
		// um "optional_where_clause" handeln.
		DBG_ASSERT(SQL_ISRULE(pWhereClause,opt_where_clause),"OPredicateCompiler: Fehler im Parse Tree");
	}
}

//------------------------------------------------------------------
OOperand* OPredicateCompiler::execute(OSQLParseNode* pPredicateNode)
{
	OOperand* pOperand = NULL;
	if (pPredicateNode->count() == 3 &&							// Ausdruck is geklammert
		SQL_ISPUNCTUATION(pPredicateNode->getChild(0),"(") &&
		SQL_ISPUNCTUATION(pPredicateNode->getChild(2),")"))
	{
		execute(pPredicateNode->getChild(1));
	}
	else if ((SQL_ISRULE(pPredicateNode,search_condition) || (SQL_ISRULE(pPredicateNode,boolean_term)))
							&&			// AND/OR-Verknuepfung:
                            pPredicateNode->count() == 3)
	{
		execute(pPredicateNode->getChild(0));						    // Bearbeiten des linken Zweigs
		execute(pPredicateNode->getChild(2));							// Bearbeiten des rechten Zweigs

		if (SQL_ISTOKEN(pPredicateNode->getChild(1),OR))				// OR-Operator
		{
			m_aCodeList.push_back(new OOp_OR());
			m_bORCondition = sal_True;
		}
		else if (SQL_ISTOKEN(pPredicateNode->getChild(1),AND))		// AND-Operator
			m_aCodeList.push_back(new OOp_AND());
		else
		{
			DBG_ERROR("OPredicateCompiler: Fehler im Parse Tree");
		}
	}
    else if (SQL_ISRULE(pPredicateNode,boolean_factor))
	{
		execute(pPredicateNode->getChild(1));
        m_aCodeList.push_back(new OOp_NOT());
	}
	else if (SQL_ISRULE(pPredicateNode,comparison_predicate))
	{
		execute_COMPARE(pPredicateNode);
	}
	else if (SQL_ISRULE(pPredicateNode,like_predicate))
	{
		execute_LIKE(pPredicateNode);
	}
	else if (SQL_ISRULE(pPredicateNode,between_predicate))
	{
		execute_BETWEEN(pPredicateNode);
	}
	else if (SQL_ISRULE(pPredicateNode,test_for_null))
	{
		execute_ISNULL(pPredicateNode);
	}
	else if(SQL_ISRULE(pPredicateNode,num_value_exp))
	{
		execute(pPredicateNode->getChild(0));						    // Bearbeiten des linken Zweigs
		execute(pPredicateNode->getChild(2));							// Bearbeiten des rechten Zweigs
		if (SQL_ISPUNCTUATION(pPredicateNode->getChild(1),"+"))
		{
			m_aCodeList.push_back(new OOp_ADD());
		}
		else if (SQL_ISPUNCTUATION(pPredicateNode->getChild(1),"-"))
			m_aCodeList.push_back(new OOp_SUB());
		else
		{
			DBG_ERROR("OPredicateCompiler: Fehler im Parse Tree num_value_exp");
		}
	}
	else if(SQL_ISRULE(pPredicateNode,term))
	{
		execute(pPredicateNode->getChild(0));						    // Bearbeiten des linken Zweigs
		execute(pPredicateNode->getChild(2));							// Bearbeiten des rechten Zweigs
		if (SQL_ISPUNCTUATION(pPredicateNode->getChild(1),"*"))
		{
			m_aCodeList.push_back(new OOp_MUL());
		}
		else if (SQL_ISPUNCTUATION(pPredicateNode->getChild(1),"/"))
			m_aCodeList.push_back(new OOp_DIV());
		else
		{
			DBG_ERROR("OPredicateCompiler: Fehler im Parse Tree num_value_exp");
		}
	}
	else
		pOperand = execute_Operand(pPredicateNode);						// jetzt werden nur einfache Operanden verarbeitet

	return pOperand;
}

//------------------------------------------------------------------
OOperand* OPredicateCompiler::execute_COMPARE(OSQLParseNode* pPredicateNode)  throw(SQLException, RuntimeException)
{
	DBG_ASSERT(pPredicateNode->count() == 3,"OFILECursor: Fehler im Parse Tree");

	if ( !(SQL_ISRULE(pPredicateNode->getChild(0),column_ref)				||
		  pPredicateNode->getChild(2)->getNodeType() == SQL_NODE_STRING 	||
		  pPredicateNode->getChild(2)->getNodeType() == SQL_NODE_INTNUM 	||
		  pPredicateNode->getChild(2)->getNodeType() == SQL_NODE_APPROXNUM	||
		  SQL_ISTOKEN(pPredicateNode->getChild(2),TRUE)						||
		  SQL_ISTOKEN(pPredicateNode->getChild(2),FALSE)					||
		  SQL_ISRULE(pPredicateNode->getChild(2),parameter)					||
		  // odbc date
		  SQL_ISRULE(pPredicateNode->getChild(2),set_fct_spec)				||
		  SQL_ISRULE(pPredicateNode->getChild(2),position_exp)				||
		  SQL_ISRULE(pPredicateNode->getChild(2),char_substring_fct)		||
		  // upper, lower etc.
		  SQL_ISRULE(pPredicateNode->getChild(2),fold)) )
	{
        m_pAnalyzer->getConnection()->throwGenericSQLException(STR_QUERY_TOO_COMPLEX,NULL);
		return NULL;
	}

    sal_Int32 ePredicateType( SQLFilterOperator::EQUAL );
	OSQLParseNode *pPrec = pPredicateNode->getChild(1);

	if (pPrec->getNodeType() == SQL_NODE_EQUAL)
		ePredicateType = SQLFilterOperator::EQUAL;
	else if (pPrec->getNodeType() == SQL_NODE_NOTEQUAL)
		ePredicateType = SQLFilterOperator::NOT_EQUAL;
	else if (pPrec->getNodeType() == SQL_NODE_LESS)
		ePredicateType = SQLFilterOperator::LESS;
	else if (pPrec->getNodeType() == SQL_NODE_LESSEQ)
		ePredicateType = SQLFilterOperator::LESS_EQUAL;
	else if (pPrec->getNodeType() == SQL_NODE_GREATEQ)
		ePredicateType = SQLFilterOperator::GREATER_EQUAL;
	else if (pPrec->getNodeType() == SQL_NODE_GREAT)
		ePredicateType = SQLFilterOperator::GREATER;
    else
        OSL_ENSURE( false, "OPredicateCompiler::execute_COMPARE: unexpected node type!" );

	execute(pPredicateNode->getChild(0));
	execute(pPredicateNode->getChild(2));
    m_aCodeList.push_back( new OOp_COMPARE(ePredicateType) );

	return NULL;
}

//------------------------------------------------------------------
OOperand* OPredicateCompiler::execute_LIKE(OSQLParseNode* pPredicateNode) throw(SQLException, RuntimeException)
{
	DBG_ASSERT(pPredicateNode->count() == 2,"OFILECursor: Fehler im Parse Tree");
    const OSQLParseNode* pPart2 = pPredicateNode->getChild(1);

	sal_Unicode cEscape = L'\0';
    const bool bNotLike = pPart2->getChild(0)->isToken();

	OSQLParseNode* pAtom		= pPart2->getChild(pPart2->count()-2);
	OSQLParseNode* pOptEscape	= pPart2->getChild(pPart2->count()-1);

	if (!(pAtom->getNodeType() == SQL_NODE_STRING 	||
		  SQL_ISRULE(pAtom,parameter)				||
		  // odbc date
		  SQL_ISRULE(pAtom,set_fct_spec)			||
		  SQL_ISRULE(pAtom,position_exp)			||
		  SQL_ISRULE(pAtom,char_substring_fct)		||
		  // upper, lower etc.
		  SQL_ISRULE(pAtom,fold)) )
	{
        m_pAnalyzer->getConnection()->throwGenericSQLException(STR_QUERY_TOO_COMPLEX,NULL);
		return NULL;
	}

	if (pOptEscape->count() != 0)
	{
		if (pOptEscape->count() != 2)
		{
            m_pAnalyzer->getConnection()->throwGenericSQLException(STR_QUERY_INVALID_LIKE_STRING,NULL);
		}
		OSQLParseNode *pEscNode = pOptEscape->getChild(1);
		if (pEscNode->getNodeType() != SQL_NODE_STRING)
		{
			m_pAnalyzer->getConnection()->throwGenericSQLException(STR_QUERY_INVALID_LIKE_STRING,NULL);
		}
		else
			cEscape = pEscNode->getTokenValue().toChar();
	}

	execute(pPredicateNode->getChild(0));
	execute(pAtom);

	OBoolOperator* pOperator = bNotLike
									? new OOp_NOTLIKE(cEscape)
									: new OOp_LIKE(cEscape);
	m_aCodeList.push_back(pOperator);

	return NULL;
}
//------------------------------------------------------------------
OOperand* OPredicateCompiler::execute_BETWEEN(OSQLParseNode* pPredicateNode) throw(SQLException, RuntimeException)
{
	DBG_ASSERT(pPredicateNode->count() == 2,"OFILECursor: Fehler im Parse Tree");

	OSQLParseNode* pColumn = pPredicateNode->getChild(0);
    const OSQLParseNode* pPart2 = pPredicateNode->getChild(1);
	OSQLParseNode* p1stValue = pPart2->getChild(2);
	OSQLParseNode* p2ndtValue = pPart2->getChild(4);

	if (
			!(p1stValue->getNodeType() == SQL_NODE_STRING || SQL_ISRULE(p1stValue,parameter))
		&&	!(p2ndtValue->getNodeType() == SQL_NODE_STRING || SQL_ISRULE(p2ndtValue,parameter))
		)
	{
        m_pAnalyzer->getConnection()->throwGenericSQLException(STR_QUERY_INVALID_BETWEEN,NULL);
	}

	sal_Bool bNot = SQL_ISTOKEN(pPart2->getChild(0),NOT);

	OOperand* pColumnOp = execute(pColumn);
	OOperand* pOb1 = execute(p1stValue);
	OBoolOperator* pOperator = new OOp_COMPARE(bNot ? SQLFilterOperator::LESS_EQUAL : SQLFilterOperator::GREATER);
	m_aCodeList.push_back(pOperator);

	execute(pColumn);
	OOperand* pOb2 = execute(p2ndtValue);
	pOperator = new OOp_COMPARE(bNot ? SQLFilterOperator::GREATER_EQUAL : SQLFilterOperator::LESS);
	m_aCodeList.push_back(pOperator);

	if ( pColumnOp && pOb1 && pOb2 )
	{
		switch(pColumnOp->getDBType())
		{
			case DataType::CHAR:
			case DataType::VARCHAR:
			case DataType::LONGVARCHAR:
				pOb1->setValue(pOb1->getValue().getString());
				pOb2->setValue(pOb2->getValue().getString());
				break;
			case DataType::DECIMAL:
			case DataType::NUMERIC:
				pOb1->setValue((double)pOb1->getValue());
				pOb2->setValue((double)pOb2->getValue());
				break;
			case DataType::FLOAT:
				pOb1->setValue((float)pOb1->getValue());
				pOb2->setValue((float)pOb2->getValue());
				break;
			case DataType::DOUBLE:
			case DataType::REAL:
				pOb1->setValue((double)pOb1->getValue());
				pOb2->setValue((double)pOb2->getValue());
				break;
			case DataType::DATE:
				pOb1->setValue((Date)pOb1->getValue());
				pOb2->setValue((Date)pOb2->getValue());
				break;
			case DataType::TIME:
				pOb1->setValue((Time)pOb1->getValue());
				pOb2->setValue((Time)pOb2->getValue());
				break;
			case DataType::TIMESTAMP:
				pOb1->setValue((DateTime)pOb1->getValue());
				pOb2->setValue((DateTime)pOb2->getValue());
				break;
		}
	}



	OBoolOperator* pBoolOp = NULL;
	if ( bNot )
		pBoolOp = new OOp_OR();
	else
		pBoolOp = new OOp_AND();
	m_aCodeList.push_back(pBoolOp);

	return NULL;
}
//------------------------------------------------------------------
OOperand* OPredicateCompiler::execute_ISNULL(OSQLParseNode* pPredicateNode)	throw(SQLException, RuntimeException)
{
	DBG_ASSERT(pPredicateNode->count() == 2,"OFILECursor: Fehler im Parse Tree");
    const OSQLParseNode* pPart2 = pPredicateNode->getChild(1);
	DBG_ASSERT(SQL_ISTOKEN(pPart2->getChild(0),IS),"OFILECursor: Fehler im Parse Tree");

	sal_Int32 ePredicateType;
	if (SQL_ISTOKEN(pPart2->getChild(1),NOT))
		ePredicateType = SQLFilterOperator::NOT_SQLNULL;
	else
		ePredicateType = SQLFilterOperator::SQLNULL;

	execute(pPredicateNode->getChild(0));
	OBoolOperator* pOperator = (ePredicateType == SQLFilterOperator::SQLNULL) ?
								new OOp_ISNULL() : new OOp_ISNOTNULL();
	m_aCodeList.push_back(pOperator);

	return NULL;
}
//------------------------------------------------------------------
OOperand* OPredicateCompiler::execute_Operand(OSQLParseNode* pPredicateNode) throw(SQLException, RuntimeException)
{
	OOperand* pOperand = NULL;

	if (SQL_ISRULE(pPredicateNode,column_ref))
	{
		::rtl::OUString	aColumnName;
		if (pPredicateNode->count() == 1)
		{
			aColumnName = pPredicateNode->getChild(0)->getTokenValue();
		}
		else if (pPredicateNode->count() == 3)
		{
			::rtl::OUString aTableName = pPredicateNode->getChild(0)->getTokenValue();
			if(SQL_ISRULE(pPredicateNode->getChild(2),column_val))
				aColumnName = pPredicateNode->getChild(2)->getChild(0)->getTokenValue();
			else
				aColumnName = pPredicateNode->getChild(2)->getTokenValue();
		}

		if(!m_orgColumns->hasByName(aColumnName))
		{
            const ::rtl::OUString sError( m_pAnalyzer->getConnection()->getResources().getResourceStringWithSubstitution(
                    STR_INVALID_COLUMNNAME,
                    "$columnname$", aColumnName
                 ) );
            ::dbtools::throwGenericSQLException( sError, NULL );
		}
		::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertySet> xCol;
		try
		{
			if (m_orgColumns->getByName(aColumnName) >>= xCol)
			{
				pOperand = m_pAnalyzer->createOperandAttr(Reference< XColumnLocate>(m_orgColumns,UNO_QUERY)->findColumn(aColumnName),xCol,m_xIndexes);
			}
			else
			{// Column existiert nicht im Resultset
				const ::rtl::OUString sError( m_pAnalyzer->getConnection()->getResources().getResourceStringWithSubstitution(
                    STR_INVALID_COLUMNNAME,
                    "$columnname$", aColumnName
                 ) );
                ::dbtools::throwGenericSQLException( sError, NULL );
			}
		}
		catch(Exception &)
		{
			OSL_ENSURE(0,"OPredicateCompiler::execute_Operand Exception");
		}
	}
	else if (SQL_ISRULE(pPredicateNode,parameter))
	{
		pOperand = new OOperandParam(pPredicateNode, ++m_nParamCounter);
	}
	else if (pPredicateNode->getNodeType() == SQL_NODE_STRING ||
			 pPredicateNode->getNodeType() == SQL_NODE_INTNUM ||
			 pPredicateNode->getNodeType() == SQL_NODE_APPROXNUM ||
			 pPredicateNode->getNodeType() == SQL_NODE_NAME ||
			 SQL_ISTOKEN(pPredicateNode,TRUE) ||
			 SQL_ISTOKEN(pPredicateNode,FALSE) ||
			 SQL_ISRULE(pPredicateNode,parameter))
	{
		pOperand = new OOperandConst(*pPredicateNode, pPredicateNode->getTokenValue());
	}
	else if((pPredicateNode->count() == 2) &&
			(SQL_ISPUNCTUATION(pPredicateNode->getChild(0),"+") || SQL_ISPUNCTUATION(pPredicateNode->getChild(0),"-")) &&
			pPredicateNode->getChild(1)->getNodeType() == SQL_NODE_INTNUM)
	{ // falls -1 bzw. +1 vorhanden ist
		::rtl::OUString aValue(pPredicateNode->getChild(0)->getTokenValue());
		aValue += pPredicateNode->getChild(1)->getTokenValue();
		pOperand = new OOperandConst(*pPredicateNode->getChild(1), aValue);
	}
	else if( SQL_ISRULE(pPredicateNode,set_fct_spec) && SQL_ISPUNCTUATION(pPredicateNode->getChild(0),"{") )
	{
		const OSQLParseNode* pODBCNode = pPredicateNode->getChild(1);
		const OSQLParseNode* pODBCNodeChild = pODBCNode->getChild(0);

		// Odbc Date or time
		if (pODBCNodeChild->getNodeType() == SQL_NODE_KEYWORD && (
			SQL_ISTOKEN(pODBCNodeChild,D) ||
			SQL_ISTOKEN(pODBCNodeChild,T) ||
			SQL_ISTOKEN(pODBCNodeChild,TS) ))
		{
			::rtl::OUString sDateTime = pODBCNode->getChild(1)->getTokenValue();
			pOperand = new OOperandConst(*pODBCNode->getChild(1), sDateTime);
			if(SQL_ISTOKEN(pODBCNodeChild,D))
			{
				pOperand->setValue(::dbtools::DBTypeConversion::toDouble(::dbtools::DBTypeConversion::toDate(sDateTime)));
			}
			else if(SQL_ISTOKEN(pODBCNodeChild,T))
			{
				pOperand->setValue(::dbtools::DBTypeConversion::toDouble(::dbtools::DBTypeConversion::toTime(sDateTime)));
			}
			else if(SQL_ISTOKEN(pODBCNodeChild,TS))
			{
				pOperand->setValue(::dbtools::DBTypeConversion::toDouble(::dbtools::DBTypeConversion::toDateTime(sDateTime)));
			}
		}
		else
			m_pAnalyzer->getConnection()->throwGenericSQLException(STR_QUERY_TOO_COMPLEX,NULL);

	}
	else if( SQL_ISRULE(pPredicateNode,fold) )
	{
		execute_Fold(pPredicateNode);
	}
	else if(	SQL_ISRULE(pPredicateNode,set_fct_spec)
			||	SQL_ISRULE(pPredicateNode,position_exp)
			||	SQL_ISRULE(pPredicateNode,char_substring_fct)
			)
	{
		executeFunction(pPredicateNode);
	}
	else if( SQL_ISRULE(pPredicateNode,length_exp) )
	{
		executeFunction(pPredicateNode->getChild(0));
	}
	else
	{
		m_pAnalyzer->getConnection()->throwGenericSQLException(STR_QUERY_TOO_COMPLEX,NULL);
	}
	if (pOperand)
		m_aCodeList.push_back(pOperand);
	return pOperand;
}

////////////////////////////////////////////////////////////////////////////////////////
sal_Bool OPredicateInterpreter::evaluate(OCodeList& rCodeList)
{
	static sal_Bool bResult;

	OCodeList::iterator aIter = rCodeList.begin();
	if (!(*aIter))
        return sal_True;        // kein Praedikat

	for(;aIter != rCodeList.end();++aIter)
	{
		OOperand* pOperand = PTR_CAST(OOperand,(*aIter));
		if (pOperand)
			m_aStack.push(pOperand);
		else
			((OOperator *)(*aIter))->Exec(m_aStack);
	}

	OOperand* pOperand = m_aStack.top();
	m_aStack.pop();

	DBG_ASSERT(m_aStack.size() == 0, "StackFehler");
	DBG_ASSERT(pOperand, "StackFehler");

	bResult = pOperand->isValid();
	if (IS_TYPE(OOperandResult,pOperand))
		delete pOperand;
	return bResult;
}
// -----------------------------------------------------------------------------
void OPredicateInterpreter::evaluateSelection(OCodeList& rCodeList,ORowSetValueDecoratorRef& _rVal)
{
	OCodeList::iterator aIter = rCodeList.begin();
	if (!(*aIter))
        return ;        // kein Praedikat

	for(;aIter != rCodeList.end();++aIter)
	{
		OOperand* pOperand = PTR_CAST(OOperand,(*aIter));
		if (pOperand)
			m_aStack.push(pOperand);
		else
			((OOperator *)(*aIter))->Exec(m_aStack);
	}

	OOperand* pOperand = m_aStack.top();
	m_aStack.pop();

	DBG_ASSERT(m_aStack.size() == 0, "StackFehler");
	DBG_ASSERT(pOperand, "StackFehler");

	(*_rVal) = pOperand->getValue();
	if (IS_TYPE(OOperandResult,pOperand))
		delete pOperand;
}
// -----------------------------------------------------------------------------
OOperand* OPredicateCompiler::execute_Fold(OSQLParseNode* pPredicateNode)	throw(SQLException, RuntimeException)
{
	DBG_ASSERT(pPredicateNode->count() >= 4,"OFILECursor: Fehler im Parse Tree");

	sal_Bool bUpper = SQL_ISTOKEN(pPredicateNode->getChild(0),UPPER);

	execute(pPredicateNode->getChild(2));
	OOperator* pOperator = NULL;
	if ( bUpper )
		pOperator = new OOp_Upper();
	else
		pOperator = new OOp_Lower();

	m_aCodeList.push_back(pOperator);
	return NULL;
}
// -----------------------------------------------------------------------------
OOperand* OPredicateCompiler::executeFunction(OSQLParseNode* pPredicateNode)	throw(SQLException, RuntimeException)
{
	OOperator* pOperator = NULL;

	OSL_ENSURE(pPredicateNode->getChild(0)->isToken(),"The first one must be the name of the function!");
	sal_Int32 nTokenId = pPredicateNode->getChild(0)->getTokenID();
	switch ( nTokenId )
	{
		case SQL_TOKEN_CHAR_LENGTH:
		case SQL_TOKEN_LENGTH:
		case SQL_TOKEN_OCTET_LENGTH:
		case SQL_TOKEN_ASCII:
		case SQL_TOKEN_LCASE:
		case SQL_TOKEN_LTRIM:
		case SQL_TOKEN_RTRIM:
		case SQL_TOKEN_SPACE:
		case SQL_TOKEN_UCASE:
		case SQL_TOKEN_ABS:
		case SQL_TOKEN_ACOS:
		case SQL_TOKEN_ASIN:
		case SQL_TOKEN_ATAN:
		case SQL_TOKEN_CEILING:
		case SQL_TOKEN_COS:
		case SQL_TOKEN_DEGREES:
		case SQL_TOKEN_EXP:
		case SQL_TOKEN_FLOOR:
		case SQL_TOKEN_LOG10:
		case SQL_TOKEN_LN:
		case SQL_TOKEN_RADIANS:
		case SQL_TOKEN_SIGN:
		case SQL_TOKEN_SIN:
		case SQL_TOKEN_SQRT:
		case SQL_TOKEN_TAN:
		case SQL_TOKEN_DAYNAME:
		case SQL_TOKEN_DAYOFMONTH:
		case SQL_TOKEN_DAYOFWEEK:
		case SQL_TOKEN_DAYOFYEAR:
		case SQL_TOKEN_HOUR:
		case SQL_TOKEN_MINUTE:
		case SQL_TOKEN_MONTH:
		case SQL_TOKEN_MONTHNAME:
		case SQL_TOKEN_QUARTER:
		case SQL_TOKEN_SECOND:
		case SQL_TOKEN_YEAR:

			execute(pPredicateNode->getChild(2));

			switch( nTokenId )
			{
				case SQL_TOKEN_CHAR_LENGTH:
				case SQL_TOKEN_LENGTH:
				case SQL_TOKEN_OCTET_LENGTH:
					pOperator = new OOp_CharLength();
					break;
				case SQL_TOKEN_ASCII:
					pOperator = new OOp_Ascii();
					break;
				case SQL_TOKEN_LCASE:
					pOperator = new OOp_Lower();
					break;

				case SQL_TOKEN_LTRIM:
					pOperator = new OOp_LTrim();
					break;
				case SQL_TOKEN_RTRIM:
					pOperator = new OOp_RTrim();
					break;
				case SQL_TOKEN_SPACE:
					pOperator = new OOp_Space();
					break;
				case SQL_TOKEN_UCASE:
					pOperator = new OOp_Upper();
					break;
				case SQL_TOKEN_ABS:
					pOperator = new OOp_Abs();
					break;
				case SQL_TOKEN_ACOS:
					pOperator = new OOp_ACos();
					break;
				case SQL_TOKEN_ASIN:
					pOperator = new OOp_ASin();
					break;
				case SQL_TOKEN_ATAN:
					pOperator = new OOp_ATan();
					break;
				case SQL_TOKEN_CEILING:
					pOperator = new OOp_Ceiling();
					break;
				case SQL_TOKEN_COS:
					pOperator = new OOp_Cos();
					break;
				case SQL_TOKEN_DEGREES:
					pOperator = new OOp_Degrees();
					break;
				case SQL_TOKEN_EXP:
					pOperator = new OOp_Exp();
					break;
				case SQL_TOKEN_FLOOR:
					pOperator = new OOp_Floor();
					break;
				case SQL_TOKEN_LOG10:
					pOperator = new OOp_Log10();
					break;
				case SQL_TOKEN_LN:
					pOperator = new OOp_Ln();
					break;
				case SQL_TOKEN_RADIANS:
					pOperator = new OOp_Radians();
					break;
				case SQL_TOKEN_SIGN:
					pOperator = new OOp_Sign();
					break;
				case SQL_TOKEN_SIN:
					pOperator = new OOp_Sin();
					break;
				case SQL_TOKEN_SQRT:
					pOperator = new OOp_Sqrt();
					break;
				case SQL_TOKEN_TAN:
					pOperator = new OOp_Tan();
					break;
				case SQL_TOKEN_DAYOFWEEK:
					pOperator = new OOp_DayOfWeek();
					break;
				case SQL_TOKEN_DAYOFMONTH:
					pOperator = new OOp_DayOfMonth();
					break;
				case SQL_TOKEN_DAYOFYEAR:
					pOperator = new OOp_DayOfYear();
					break;
				case SQL_TOKEN_MONTH:
					pOperator = new OOp_Month();
					break;
				case SQL_TOKEN_DAYNAME:
					pOperator = new OOp_DayName();
					break;
				case SQL_TOKEN_MONTHNAME:
					pOperator = new OOp_MonthName();
					break;
				case SQL_TOKEN_QUARTER:
					pOperator = new OOp_Quarter();
					break;
				case SQL_TOKEN_YEAR:
					pOperator = new OOp_Year();
					break;
				case SQL_TOKEN_HOUR:
					pOperator = new OOp_Hour();
					break;
				case SQL_TOKEN_MINUTE:
					pOperator = new OOp_Minute();
					break;
				case SQL_TOKEN_SECOND:
					pOperator = new OOp_Second();
					break;
				default:
					OSL_ENSURE(0,"Error in switch!");
			}
			break;
		case SQL_TOKEN_CHAR:
		case SQL_TOKEN_CONCAT:
		case SQL_TOKEN_INSERT:
		case SQL_TOKEN_LEFT:
		case SQL_TOKEN_LOCATE:
		case SQL_TOKEN_LOCATE_2:
		case SQL_TOKEN_REPEAT:
		case SQL_TOKEN_REPLACE:
		case SQL_TOKEN_RIGHT:
		case SQL_TOKEN_MOD:
		case SQL_TOKEN_ROUND:
		case SQL_TOKEN_LOGF:
        case SQL_TOKEN_LOG:
		case SQL_TOKEN_POWER:
		case SQL_TOKEN_ATAN2:
		case SQL_TOKEN_PI:
		case SQL_TOKEN_CURDATE:
		case SQL_TOKEN_CURTIME:
		case SQL_TOKEN_NOW:
		case SQL_TOKEN_WEEK:
			{
				m_aCodeList.push_back(new OStopOperand);
				OSQLParseNode* pList = pPredicateNode->getChild(2);
				for (sal_uInt32 i=0; i < pList->count(); ++i)
					execute(pList->getChild(i));

				switch( nTokenId )
				{
					case SQL_TOKEN_CHAR:
						pOperator = new OOp_Char();
						break;
					case SQL_TOKEN_CONCAT:
						pOperator = new OOp_Concat();
						break;
					case SQL_TOKEN_INSERT:
						pOperator = new OOp_Insert();
						break;
					case SQL_TOKEN_LEFT:
						pOperator = new OOp_Left();
						break;
					case SQL_TOKEN_LOCATE:
					case SQL_TOKEN_LOCATE_2:
						pOperator = new OOp_Locate();
						break;
					case SQL_TOKEN_REPEAT:
						pOperator = new OOp_Repeat();
						break;
					case SQL_TOKEN_REPLACE:
						pOperator = new OOp_Replace();
						break;
					case SQL_TOKEN_RIGHT:
						pOperator = new OOp_Right();
						break;
					case SQL_TOKEN_MOD:
						pOperator = new OOp_Mod();
						break;
					case SQL_TOKEN_ROUND:
						pOperator = new OOp_Round();
						break;
					case SQL_TOKEN_LOGF:
                    case SQL_TOKEN_LOG:
						pOperator = new OOp_Log();
						break;
					case SQL_TOKEN_POWER:
						pOperator = new OOp_Pow();
						break;
					case SQL_TOKEN_ATAN2:
						pOperator = new OOp_ATan2();
						break;
					case SQL_TOKEN_PI:
						pOperator = new OOp_Pi();
						break;
					case SQL_TOKEN_CURDATE:
						pOperator = new OOp_CurDate();
						break;
					case SQL_TOKEN_CURTIME:
						pOperator = new OOp_CurTime();
						break;
					case SQL_TOKEN_NOW:
						pOperator = new OOp_Now();
						break;
					case SQL_TOKEN_WEEK:
						pOperator = new OOp_Week();
						break;
					default:
						OSL_ENSURE(0,"Error in switch!");
				}
			}
			break;

		case SQL_TOKEN_SUBSTRING:
			m_aCodeList.push_back(new OStopOperand);
			if ( pPredicateNode->count() == 4 ) //char_substring_fct
			{
				OSQLParseNode* pList = pPredicateNode->getChild(2);
				for (sal_uInt32 i=0; i < pList->count(); ++i)
					execute(pList->getChild(i));
			}
			else
			{
				execute(pPredicateNode->getChild(2));
				execute(pPredicateNode->getChild(4));
				execute(pPredicateNode->getChild(5)->getChild(1));
			}
			pOperator = new OOp_SubString();
			break;

		case SQL_TOKEN_POSITION:
			m_aCodeList.push_back(new OStopOperand);
			if ( pPredicateNode->count() == 4 ) //position_exp
			{
				OSQLParseNode* pList = pPredicateNode->getChild(2);
				for (sal_uInt32 i=0; i < pList->count(); ++i)
					execute(pList->getChild(i));
			}
			else
			{
				execute(pPredicateNode->getChild(2));
				execute(pPredicateNode->getChild(4));
			}
			pOperator = new OOp_Locate();
			break;
		default:
            m_pAnalyzer->getConnection()->throwGenericSQLException(STR_QUERY_FUNCTION_NOT_SUPPORTED,NULL);
	}

	m_aCodeList.push_back(pOperator);
	return NULL;
}
// -----------------------------------------------------------------------------