text: //%2005////////////////////////////////////////////////////////////////////////
  //
  // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
  // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
  // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
  // IBM Corp.; EMC Corporation, The Open Group.
  // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
  // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
  // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
  // EMC Corporation; VERITAS Software Corporation; The Open Group.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to
  // deal in the Software without restriction, including without limitation the
  // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  // sell copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  //
  // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
  // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
  // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
  // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  //
  //==============================================================================
  //
  // Authors: David Rosckes (rosckes@us.ibm.com)
  //          Bert Rivero (hurivero@us.ibm.com)
  //          Chuck Carmack (carmack@us.ibm.com)
  //          Brian Lucier (lucier@us.ibm.com)
  //
  // Modified By: David Dillard, VERITAS Software Corp.
  //                  (david.dillard@veritas.com)
  //              Vijay Eli, IBM (vijayeli@in.ibm.com) bug#3590
  //
  //%/////////////////////////////////////////////////////////////////////////////
  
  #ifndef Pegasus_CQLSimplePredicateRep_h
  #define Pegasus_CQLSimplePredicateRep_h
  
  #include <Pegasus/CQL/Linkage.h>
  #include <Pegasus/CQL/CQLExpression.h>
  
  //#include <Pegasus/Common/CIMInstance.h>
  //#include <Pegasus/CQL/QueryContext.h>
  
  PEGASUS_NAMESPACE_BEGIN
  
  class PEGASUS_CQL_LINKAGE CQLExpression;
  class PEGASUS_CQL_LINKAGE CQLFactory;
  class PEGASUS_QUERYCOMMON_LINKAGE QueryContext;
  
  class CQLSimplePredicateRep
  {
    public:
      CQLSimplePredicateRep();
  
      CQLSimplePredicateRep(const CQLExpression& inExpression);
  
      CQLSimplePredicateRep(const CQLExpression& inExpression, ExpressionOpType inOperator);
  
      CQLSimplePredicateRep(const CQLExpression& leftSideExpression,
                            const CQLExpression& rightSideExpression,
                            ExpressionOpType inOperator);
  
      CQLSimplePredicateRep(const CQLSimplePredicateRep* rep);
  
      ~CQLSimplePredicateRep(){}
  
      /**
        CQLExpressions:
            For an expression, CQLExpression::getValue is called and will
            return a CQLValue.
            The appropriate operator is then invoked on CQLValue and that
            operator function will enforce the type restrictions as documented
            in the DMTF CQL Specification.
            That operator then determines whether the predicate is TRUE / FALSE.
  
  
         CQLPredicates:
            The CQLPredicate is non-terminal if it contains only CQLPredicate
            objects.
            A non-terminal CQLPredicate is evaluated by in turn evaluating the
            contained CQLPredicates and boolean operator.
            Valid operators are:
                    AND, OR
  
            For the evaluate method on each CQLPredicate. the CQLPredicate is
            evaluated to TRUE/FALSE and the result of the evaluation is then
            applied to the appropriate boolean operator.
  
            The result of the evaluation is and then inverted if the _invert
            member variable is set to TRUE and then returned to the caller.
  
        */
      Boolean evaluate(CIMInstance CI, QueryContext& QueryCtx);
  
      CQLExpression getLeftExpression()const;
  
      CQLExpression getRightExpression()const;
  
      ExpressionOpType getOperation()const;
  
      void applyContext(const QueryContext& queryContext);
  
      String toString()const;
  
      Boolean isSimple()const;
  
      Boolean isSimpleValue()const;
  
      void setOperation(ExpressionOpType op);
  
      friend class CQLFactory;
  
  private:
      CQLExpression _leftSide;
  
      CQLExpression _rightSide;
  
      ExpressionOpType _operator;
      Boolean _isSimple;
  };
  PEGASUS_NAMESPACE_END
  
  #endif
  