org.opengis.filter.expression
Interface Expression

All Known Subinterfaces:

Add, BinaryExpression, Divide, Function, Literal, Multiply, PropertyName, Subtract

@XmlElement(value="expression")
public interface Expression

Abstract super-interface for all the OGC Filter elements that compute values, potentially using feature attributes in the computation.

Since:

GeoAPI 2.0

Version:

Implementation specification 1.0

Method Summary

Object	accept(ExpressionVisitor visitor, Object extraData) Accepts a visitor.
Object	evaluate(Feature feature) Evaluates the given expression based on the content of the given feature.

Method Detail

evaluate

@Extension
Object evaluate(Feature feature)

Evaluates the given expression based on the content of the given feature.

accept

@Extension
Object accept(ExpressionVisitor visitor,
                        Object extraData)

Accepts a visitor. Subclasses must implement with a method whose content* is the following:

return visitor.visit(this, extraData);