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version 1.1, 2004/09/07 20:38:52
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version 1.1.2.8, 2004/09/29 17:04:20
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//%2003//////////////////////////////////////////////////////////////////////// |
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// |
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// Copyright (c) 2000, 2001, 2002 BMC Software, Hewlett-Packard Development |
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// Company, L. P., IBM Corp., The Open Group, Tivoli Systems. |
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// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L. P.; |
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// IBM Corp.; EMC Corporation, The Open Group. |
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// |
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// Permission is hereby granted, free of charge, to any person obtaining a copy |
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// of this software and associated documentation files (the "Software"), to |
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// deal in the Software without restriction, including without limitation the |
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
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// sell copies of the Software, and to permit persons to whom the Software is |
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// furnished to do so, subject to the following conditions: |
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// |
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// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN |
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// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED |
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// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT |
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// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR |
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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// |
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//============================================================================== |
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// |
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// Authors: David Rosckes (rosckes@us.ibm.com) |
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// Bert Rivero (hurivero@us.ibm.com) |
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// Chuck Carmack (carmack@us.ibm.com) |
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// Brian Lucier (lucier@us.ibm.com) |
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// |
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// Modified By: |
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// |
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//%///////////////////////////////////////////////////////////////////////////// |
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#ifndef Pegasus_CQLExpressionRep_h |
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#define Pegasus_CQLExpressionRep_h |
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#include <Pegasus/Common/Config.h> |
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#include <Pegasus/CQL/CQLValue.h> |
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#include <Pegasus/CQL/Linkage.h> |
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#include <Pegasus/CQL/CQLTerm.h> |
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PEGASUS_NAMESPACE_BEGIN |
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class PEGASUS_CQL_LINKAGE CQLFactory; |
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class PEGASUS_CQL_LINKAGE QueryContext; |
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/** |
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The CQLExpression class encapsulates a generic CQL expression to make it |
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easier to break into components and process the expression. |
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A CQL expression is made up of terms and operators. |
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For example, 'A + B' is a CQLExpression, where 'A' and 'B' are terms, and |
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'+' is an operator. |
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There must be exactly one more term than there are operators. |
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*/ |
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//##ModelId=40FC03230150 |
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class PEGASUS_CQL_LINKAGE CQLExpressionRep |
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{ |
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public: |
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CQLExpressionRep(){} |
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/** constructor takes one CQLTerm object. |
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*/ |
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CQLExpressionRep(CQLTerm& theTerm); |
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CQLExpressionRep(const CQLExpressionRep* rep); |
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/** the getValue method evaluates the expression and returns the value. |
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Any property that need to be resolved into a value is taken from the |
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CIMInstance. |
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*/ |
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~CQLExpressionRep(); |
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CQLValue resolveValue(CIMInstance CI, QueryContext& QueryCtx); |
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/** The appendOperation is used by Bison. |
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It is invoked 0 or more times for the CQLExpression, and |
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when invoked will always pass in an integer that is the Term operation |
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type and a CQLTerm object. |
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*/ |
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void appendOperation(TermOpType theTermOpType, CQLTerm& theTerm); |
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String toString(); |
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Boolean isSimple(); |
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Boolean isSimpleValue(); |
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Array<CQLTerm> getTerms(); |
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Array<TermOpType> getOperators(); |
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void applyContext(QueryContext& inContext); |
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Boolean operator==(const CQLExpressionRep& rep); |
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Boolean operator!=(const CQLExpressionRep& rep); |
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friend class CQLFactory; |
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private: |
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/** The _TermOperators member variable is an |
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array of operators that are valid to operate on Terms in a CQL |
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expression. |
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Valid operators include concatentation, plus and minus. |
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The array is ordered according to the operation from left to right. |
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*/ |
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Array<TermOpType> _TermOperators; |
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/** The _CQLTerms member variable is an |
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array of operands that are valid in a CQL expression. |
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The array is ordered according to the operation from left to right. |
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*/ |
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Array<CQLTerm> _CQLTerms; |
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Boolean _isSimple; |
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}; |
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PEGASUS_NAMESPACE_END |
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#endif /* CQLEXPRESSION_H_HEADER_INCLUDED_BEE5929F */ |
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CQLExpressionRep.h
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