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OSGeo::FDO::Expression::OSGeo::FDO::Expression::IExpressionProcessor Interface Reference

Inherited by OSGeo::FDO::Expression::IExpressionProcessorImp.

Inheritance diagram for OSGeo::FDO::Expression::OSGeo::FDO::Expression::IExpressionProcessor:

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Detailed Description

The IExpressionProcessor interface can be used to process the nodes in an Expression tree. It declares an process operation for each concrete class in the Expression hierarchy. Providers or client applications can create classes that realize this interface to do something meaningful with an Expression hierarchy. For example, an RDBMS feature provider implements a processor class to convert an Expression hierarchy to the SQL equivalent syntax.


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