pegasus/src/Pegasus/WQL/WQLPropertySource.h - diff

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Diff for /pegasus/src/Pegasus/WQL/WQLPropertySource.h between version 1.1.2.1 and 1.1.2.2

version 1.1.2.1, 2001/12/03 00:58:05

version 1.1.2.2, 2001/12/03 02:23:25

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#include <Pegasus/Common/Config.h>

#include <Pegasus/Common/String.h>

#include <Pegasus/WQL/Linkage.h>

#include <Pegasus/WQL/WQLOperand.h>

PEGASUS_NAMESPACE_BEGIN

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WQLSelectStatement::evaluateWhereClause() method which calls methods of

this class to obtain real values for property names used in the where

clause.

The methods of this class all have the following form:

<pre>

virtual Boolean getValue(

const String& propertyName,

T& value,

Boolean& isNull) const = 0;

</pre>

Where "T" is the data type. True is returned if a property with that

name is actually exists and the value refers to the value of that

property. If the property is null, the the isNull flag is passed.

class PEGASUS_WQL_LINKAGE WQLPropertySource

{

public:

virtual Boolean getValue(

const String& propertyName,

// Returns the value of the property with the given name:

Sint32& value,

Boolean& isNull) const = 0;

virtual Boolean getValue(

const String& propertyName,

Real64& x,

Boolean& isNull) const = 0;

virtual Boolean getValue(

const String& propertyName,

Boolean& x,

Boolean& isNull) const = 0;

virtual Boolean getValue(

const String& propertyName,

String& x,

WQLOperand& value) const = 0;

Boolean& isNull) const = 0;

};

PEGASUS_NAMESPACE_END

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