//%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_CQLExpressionRep_h
#define Pegasus_CQLExpressionRep_h

#include <Pegasus/CQL/Linkage.h>
#include <Pegasus/CQL/CQLValue.h>
#include <Pegasus/CQL/CQLTerm.h>

PEGASUS_NAMESPACE_BEGIN

class PEGASUS_CQL_LINKAGE CQLFactory;
class PEGASUS_QUERYCOMMON_LINKAGE QueryContext;

class PEGASUS_CQL_LINKAGE CQLExpressionRep
{
  public:
  CQLExpressionRep(){}

  CQLExpressionRep(const CQLTerm& theTerm);
  CQLExpressionRep(const CQLExpressionRep* rep);

  ~CQLExpressionRep();

  CQLValue resolveValue(const CIMInstance& CI, const QueryContext& QueryCtx);

  void appendOperation(const TermOpType theTermOpType, const CQLTerm& theTerm);

  String toString()const;

  Boolean isSimple()const;

  Boolean isSimpleValue()const;

  Array<CQLTerm> getTerms()const;

  Array<TermOpType> getOperators()const;

  void applyContext(const QueryContext& inContext,
            const CQLChainedIdentifier& inCid);
/*
  Boolean operator==(const CQLExpressionRep& rep)const;

  Boolean operator!=(const CQLExpressionRep& rep)const;
  */
  friend class CQLFactory;

 private:

  /**  The _TermOperators member variable is an
       array of operators that are valid to operate on Terms in a CQL
       expression.
       Valid operators include concatentation, add and subtract.

       The array is ordered according to the operation from left to right.
  */
  Array<TermOpType> _TermOperators;

  /**  The _CQLTerms member variable is an
       array of operands that are valid in a CQL expression.

       The array is ordered according to the operation from left to right.
  */
  Array<CQLTerm> _CQLTerms;

};

PEGASUS_NAMESPACE_END


#endif /* CQLEXPRESSION_H_HEADER_INCLUDED_BEE5929F */
