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Diff for /pegasus/src/Pegasus/CQL/CQLSimplePredicate.h between version 1.1 and 1.1.2.10

version 1.1, 2004/08/24 18:35:41

version 1.1.2.10, 2004/10/18 21:34:18

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//%2003////////////////////////////////////////////////////////////////////////

// Company, L. P., IBM Corp., The Open Group, Tivoli Systems.

// IBM Corp.; EMC Corporation, The Open Group.

// Permission is hereby granted, free of charge, to any person obtaining a copy

// of this software and associated documentation files (the "Software"), to

// deal in the Software without restriction, including without limitation the

// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

// sell copies of the Software, and to permit persons to whom the Software is

// furnished to do so, subject to the following conditions:

// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN

// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED

// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT

// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR

// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

//==============================================================================

// Authors: David Rosckes (rosckes@us.ibm.com)

// Bert Rivero (hurivero@us.ibm.com)

// Chuck Carmack (carmack@us.ibm.com)

// Brian Lucier (lucier@us.ibm.com)

// Modified By:

//%/////////////////////////////////////////////////////////////////////////////

#ifndef Pegasus_CQLSimplePredicate_h

#define Pegasus_CQLSimplePredicate_h

#include <Pegasus/Common/Config.h>

#include <Pegasus/CQL/Linkage.h>

#include <Pegasus/Common/CIMInstance.h>

PEGASUS_NAMESPACE_BEGIN

class PEGASUS_CQL_LINKAGE CQLExpression;

class PEGASUS_CQL_LINKAGE CQLFactory;

class PEGASUS_CQL_LINKAGE CQLSimplePredicateRep;

class PEGASUS_CQL_LINKAGE QueryContext;

enum ExpressionOpType { LT, GT, EQ, LE, GE, NE, IS_NULL, IS_NOT_NULL, ISA, LIKE };

/**

class CQLSimplePredicate

{

public:

CQLSimplePredicate();

CQLSimplePredicate(const CQLExpression& inExpression);

CQLSimplePredicate(const CQLExpression& inExpression,

ExpressionOpType inOperator);

CQLSimplePredicate(const CQLExpression& leftSideExpression,

const CQLExpression& rightSideExpression,

ExpressionOpType inOperator);

CQLSimplePredicate(const CQLSimplePredicate& inSimplePredicate);

~CQLSimplePredicate();

/**

CQLExpressions:

For an expression, CQLExpression::getValue is called and will return a

CQLValue.

The appropriate operator is then invoked on CQLValue and that operator

function will

enforce the type restrictions as documented in the DMTF CQL

Specification.

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

CQLPredicates:

The CQLPredicate is non-terminal if it contains only CQLPredicate

objects.

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

contained CQLPredicates and

boolean operator.

Valid operators are:

AND, OR

For the evaluate method on each CQLPredicate. the CQLPredicate is

evaluated to TRUE/FALSE and

the result of the evaluation is then applied to the appropriate boolean

operator.

The result of the evaluation is and then inverted if the _invert member

variable is set to TRUE

and then returned to the caller.

Boolean evaluate(CIMInstance CI, QueryContext& QueryCtx);

CQLExpression getLeftExpression()const;

CQLExpression getRightExpression()const;

enum ExpressionOpType getOperation()const;

void applyContext(QueryContext& queryContext);

String toString()const;

Boolean isSimple()const;

Boolean isSimpleValue()const;

CQLSimplePredicate& operator=(const CQLSimplePredicate& rhs);

friend class CQLFactory;

private:

CQLSimplePredicateRep *_rep;

};

PEGASUS_NAMESPACE_END

#endif

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