# OSGeo::FDO::Expression::IExpressionProcessorImp Class Reference
[OSGeo::FDO::Expression]

Inheritance diagram for OSGeo::FDO::Expression::IExpressionProcessorImp:

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List of all members.

## 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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## Public Member Functions
| IExpressionProcessorImp (System::IntPtr unmanaged, System::Boolean autoDelete)
| Constructs a IExpressionProcessorImp object based on an unmanaged instance of the object.