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version 1.1, 2001/12/03 00:58:05
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version 1.2, 2001/12/13 14:54:45
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//%///////////////////////////////////////////////////////////////////////////// |
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// |
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// Copyright (c) 2000, 2001 BMC Software, Hewlett-Packard Company, IBM, |
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// The Open Group, Tivoli Systems |
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// |
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// Permission is hereby granted, free of charge, to any person obtaining a copy |
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// of this software and associated documentation files (the "Software"), to |
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// deal in the Software without restriction, including without limitation the |
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
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// sell copies of the Software, and to permit persons to whom the Software is |
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// furnished to do so, subject to the following conditions: |
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// |
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// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN |
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// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED |
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// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT |
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// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR |
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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// |
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//============================================================================== |
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// |
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// Author: Mike Brasher (mbrasher@bmc.com) |
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// |
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// Modified By: |
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// |
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//%///////////////////////////////////////////////////////////////////////////// |
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#ifndef Pegasus_WQLPropertySource_h |
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#define Pegasus_WQLPropertySource_h |
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#include <Pegasus/Common/Config.h> |
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#include <Pegasus/Common/String.h> |
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#include <Pegasus/WQL/Linkage.h> |
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#include <Pegasus/WQL/WQLOperand.h> |
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PEGASUS_NAMESPACE_BEGIN |
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/** This class must be implemented to provide a source of properties for the |
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WQLSelectStatement::evaluateWhereClause() method which calls methods of |
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this class to obtain real values for property names used in the where |
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clause. |
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*/ |
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class PEGASUS_WQL_LINKAGE WQLPropertySource |
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{ |
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public: |
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/** Virtual destructor. |
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*/ |
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virtual ~WQLPropertySource(); |
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/** Returns the value whose property has the given name. The output |
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parameter value is populated with the value of that parameter. |
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Note that only integer, double, and string types are supported |
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(see the WQLOperand class). The implementer of this method must |
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perform appropriate conversions to the appropriate type. |
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@param propertyName name of property to be gotten. |
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@param value holds the value of the property upon return. |
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@return true if such a property was found and false otherwise. |
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*/ |
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virtual Boolean getValue( |
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const String& propertyName, |
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WQLOperand& value) const = 0; |
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}; |
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PEGASUS_NAMESPACE_END |
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#endif /* Pegasus_WQLPropertySource_h */ |
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