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version 1.1, 2004/08/20 18:22:36
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version 1.1.2.5, 2004/09/01 20:07:58
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#ifndef CQLEXPRESSION_H_HEADER_INCLUDED_BEE5929F |
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#define CQLEXPRESSION_H_HEADER_INCLUDED_BEE5929F |
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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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#define MAXFACTORS 50 |
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PEGASUS_NAMESPACE_BEGIN |
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class PEGASUS_CQL_LINKAGE CQLFactory; |
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/** The enum is private, but the definition is public. |
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*/ |
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//##ModelId=40FC040E0079 |
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enum TermOpType {plus,minus}; |
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#ifndef PEGASUS_ARRAY_T |
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#define PEGASUS_ARRAY_T TermOpType |
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#include <Pegasus/Common/ArrayInter.h> |
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#undef PEGASUS_ARRAY_T |
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#endif |
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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 CQLExpression |
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{ |
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public: |
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CQLExpression(){} |
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/** constructor takes one CQLTerm object. |
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*/ |
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//##ModelId=40FD308002EE |
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CQLExpression(CQLTerm& theTerm); |
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CQLExpression(const CQLExpression& inExpress); |
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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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~CQLExpression(){} |
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//##ModelId=40FC0323015B |
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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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//##ModelId=40FD30BB03C3 |
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void appendOperation(TermOpType theTermOpType, CQLTerm& theTerm); |
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String toString(); |
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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 applyScopes(Array<CQLScope> inScopes); |
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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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//##ModelId=40FC036B036A |
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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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//##ModelId=40FC2F2C0341 |
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Array<CQLTerm> _CQLTerms; |
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}; |
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#ifndef PEGASUS_ARRAY_T |
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#define PEGASUS_ARRAY_T CQLExpression |
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#include <Pegasus/Common/ArrayInter.h> |
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#undef PEGASUS_ARRAY_T |
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#endif |
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PEGASUS_NAMESPACE_END |
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#endif /* CQLEXPRESSION_H_HEADER_INCLUDED_BEE5929F */ |
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CQLExpression.h
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