OSGeo::FDO::Expression::IExpressionProcessor Interface Reference
[OSGeo::FDO::Expression]
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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