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File: [Pegasus] / pegasus / src / Pegasus / CQL / CQLExpression.h
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Revision: 1.1.2.5, Wed Sep 1 19:07:58 2004 UTC (19 years, 10 months ago) by humberto Branch: CQL_2_5_BRANCH Changes since 1.1.2.4: +2 -0 lines PEP#: 138 TITLE: CQL updates DESCRIPTION: CQL updates |
#ifndef CQLEXPRESSION_H_HEADER_INCLUDED_BEE5929F #define CQLEXPRESSION_H_HEADER_INCLUDED_BEE5929F #include <Pegasus/Common/Config.h> #include <Pegasus/CQL/CQLValue.h> #include <Pegasus/CQL/Linkage.h> #include <Pegasus/CQL/CQLTerm.h> #define MAXFACTORS 50 PEGASUS_NAMESPACE_BEGIN class PEGASUS_CQL_LINKAGE CQLFactory; /** The enum is private, but the definition is public. */ //##ModelId=40FC040E0079 enum TermOpType {plus,minus}; #ifndef PEGASUS_ARRAY_T #define PEGASUS_ARRAY_T TermOpType #include <Pegasus/Common/ArrayInter.h> #undef PEGASUS_ARRAY_T #endif /** The CQLExpression class encapsulates a generic CQL expression to make it easier to break into components and process the expression. A CQL expression is made up of terms and operators. For example, 'A + B' is a CQLExpression, where 'A' and 'B' are terms, and '+' is an operator. There must be exactly one more term than there are operators. */ //##ModelId=40FC03230150 class PEGASUS_CQL_LINKAGE CQLExpression { public: CQLExpression(){} /** constructor takes one CQLTerm object. */ //##ModelId=40FD308002EE CQLExpression(CQLTerm& theTerm); CQLExpression(const CQLExpression& inExpress); /** the getValue method evaluates the expression and returns the value. Any property that need to be resolved into a value is taken from the CIMInstance. */ ~CQLExpression(){} //##ModelId=40FC0323015B CQLValue resolveValue(CIMInstance CI, QueryContext& QueryCtx); /** The appendOperation is used by Bison. It is invoked 0 or more times for the CQLExpression, and when invoked will always pass in an integer that is the Term operation type and a CQLTerm object. */ //##ModelId=40FD30BB03C3 void appendOperation(TermOpType theTermOpType, CQLTerm& theTerm); String toString(); Boolean isSimpleValue(); Array<CQLTerm> getTerms(); Array<TermOpType> getOperators(); void applyScopes(Array<CQLScope> inScopes); 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, plus and minus. The array is ordered according to the operation from left to right. */ //##ModelId=40FC036B036A 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. */ //##ModelId=40FC2F2C0341 Array<CQLTerm> _CQLTerms; }; #ifndef PEGASUS_ARRAY_T #define PEGASUS_ARRAY_T CQLExpression #include <Pegasus/Common/ArrayInter.h> #undef PEGASUS_ARRAY_T #endif PEGASUS_NAMESPACE_END #endif /* CQLEXPRESSION_H_HEADER_INCLUDED_BEE5929F */
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