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 28 martin 1.9  //////////////////////////////////////////////////////////////////////////

 29 chuck  1.2  //
 30             //%/////////////////////////////////////////////////////////////////////////////
 31             

 32 david.dillard 1.4  #ifndef Pegasus_CQLSimplePredicateRep_h

 33 chuck         1.2  #define Pegasus_CQLSimplePredicateRep_h
 34                    
 35                    #include <Pegasus/CQL/Linkage.h>
 36                    #include <Pegasus/CQL/CQLExpression.h>
 37                    
 38                    //#include <Pegasus/Common/CIMInstance.h>
 39                    //#include <Pegasus/CQL/QueryContext.h>
 40                    
 41                    PEGASUS_NAMESPACE_BEGIN
 42                    

 43 mike          1.7  class CQLExpression;
 44                    class CQLFactory;
 45                    class QueryContext;

 46 chuck         1.2  
 47                    class CQLSimplePredicateRep
 48                    {
 49                      public:
 50                        CQLSimplePredicateRep();
 51                    
 52                        CQLSimplePredicateRep(const CQLExpression& inExpression);
 53                    

 54 karl          1.8      CQLSimplePredicateRep(const CQLExpression& inExpression,
 55                                ExpressionOpType inOperator);

 56 chuck         1.2  
 57                        CQLSimplePredicateRep(const CQLExpression& leftSideExpression,

 58 david.dillard 1.4                            const CQLExpression& rightSideExpression,
 59                                              ExpressionOpType inOperator);

 60 chuck         1.2  
 61                        CQLSimplePredicateRep(const CQLSimplePredicateRep* rep);
 62                    
 63                        ~CQLSimplePredicateRep(){}
 64                    

 65 david.dillard 1.4      /**
 66                          CQLExpressions:
 67                              For an expression, CQLExpression::getValue is called and will
 68                              return a CQLValue.
 69                              The appropriate operator is then invoked on CQLValue and that
 70                              operator function will enforce the type restrictions as documented
 71                              in the DMTF CQL Specification.

 72 chuck         1.2            That operator then determines whether the predicate is TRUE / FALSE.

 73 david.dillard 1.4  
 74                    
 75                           CQLPredicates:

 76 chuck         1.2            The CQLPredicate is non-terminal if it contains only CQLPredicate

 77 david.dillard 1.4            objects.

 78 chuck         1.2            A non-terminal CQLPredicate is evaluated by in turn evaluating the

 79 david.dillard 1.4            contained CQLPredicates and boolean operator.
 80                              Valid operators are:

 81 chuck         1.2                    AND, OR

 82 david.dillard 1.4  
 83                              For the evaluate method on each CQLPredicate. the CQLPredicate is
 84                              evaluated to TRUE/FALSE and the result of the evaluation is then
 85                              applied to the appropriate boolean operator.
 86                    
 87                              The result of the evaluation is and then inverted if the _invert
 88                              member variable is set to TRUE and then returned to the caller.
 89                    

 90 chuck         1.2        */
 91                        Boolean evaluate(CIMInstance CI, QueryContext& QueryCtx);
 92                    
 93                        CQLExpression getLeftExpression()const;
 94                    
 95                        CQLExpression getRightExpression()const;
 96                    

 97 david.dillard 1.4      ExpressionOpType getOperation()const;

 98 chuck         1.2  

 99 vijay.eli     1.5      void applyContext(const QueryContext& queryContext);

100 chuck         1.2  
101                        String toString()const;
102                    
103                        Boolean isSimple()const;
104                    
105                        Boolean isSimpleValue()const;
106                    
107                        void setOperation(ExpressionOpType op);
108                    
109                        friend class CQLFactory;

110 david.dillard 1.4  
111                    private:

112 chuck         1.2      CQLExpression _leftSide;
113                    
114                        CQLExpression _rightSide;
115                    
116                        ExpressionOpType _operator;
117                        Boolean _isSimple;
118                    };
119                    PEGASUS_NAMESPACE_END
120                    

121 david.dillard 1.4  #endif