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

Method Summary

Modifier and Type	Method and Description
java.lang.Object	accept(ExpressionVisitor visitor, java.lang.Object extraData) Accepts a visitor.
java.lang.Object	evaluate(Feature feature) Evaluates the given expression based on the content of the given feature.
java.lang.Object	evaluate(java.lang.Object object) Evaluates the given expression based on the content of the given object.

Method Detail

evaluate

@Extension
java.lang.Object evaluate(Feature feature)

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

evaluate

@Extension
java.lang.Object evaluate(java.lang.Object object)

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

accept

@Extension
java.lang.Object accept(ExpressionVisitor visitor,
                                   java.lang.Object extraData)

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

return visitor.visit(this, extraData);