![]() ![]() |
![]() |
File: [Pegasus] / pegasus / src / Pegasus / CQL / CQLExpressionRep.h
(download)
Revision: 1.1.2.1, Tue Sep 7 19:38:52 2004 UTC (19 years, 9 months ago) by humberto Branch: CQL_2_5_BRANCH Changes since 1.1: +82 -0 lines PEP#: 138 TITLE: CQL updates DESCRIPTION: CQL updates |
#ifndef Pegasus_CQLExpressionRep_h #define Pegasus_CQLExpressionRep_h #include <Pegasus/Common/Config.h> #include <Pegasus/CQL/CQLValue.h> #include <Pegasus/CQL/Linkage.h> #include <Pegasus/CQL/CQLTerm.h> PEGASUS_NAMESPACE_BEGIN class PEGASUS_CQL_LINKAGE CQLFactory; class PEGASUS_CQL_LINKAGE QueryContext; /** 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 CQLExpressionRep { public: CQLExpressionRep(){} /** constructor takes one CQLTerm object. */ CQLExpressionRep(CQLTerm& theTerm); CQLExpressionRep(const CQLExpressionRep& rep); /** 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. */ ~CQLExpressionRep(); 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. */ void appendOperation(TermOpType theTermOpType, CQLTerm& theTerm); String toString(); Boolean isSimpleValue(); Array<CQLTerm> getTerms(); Array<TermOpType> getOperators(); void applyScopes(Array<CQLScope> inScopes); Boolean operator==(const CQLExpressionRep& rep); Boolean operator!=(const CQLExpressionRep& rep); 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. */ 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 */
No CVS admin address has been configured |
Powered by ViewCVS 0.9.2 |