org.deegree.filter
Interface Filter

All Known Implementing Classes:

IdFilter, OperatorFilter, SymbologyParser.ElseFilter

public interface Filter

A Filter is a boolean expression (often containing spatial predicates) that can be tested against MatchableObjects.

The filter subsystem is designed to be compatible with the OpenGIS Filter Encoding Implementation Specification.

Version:

$Revision:$, $Date:$

Author:

Markus Schneider , last edited by: $Author:$

See Also:

IdFilter, OperatorFilter

Nested Class Summary

static class

Filter.Type Convenience enum type for discriminating the different filter types.

Method Summary

boolean	evaluate(MatchableObject object) Determines if the given MatchableObject matches this Filter.
Filter.Type	getType() Returns the type of filter.

Method Detail

getType

Filter.Type getType()

Returns the type of filter. Use this to safely determine the subtype of Filter.

Returns:

type of filter (id or expression based)

evaluate

boolean evaluate(MatchableObject object)
                 throws FilterEvaluationException

Determines if the given MatchableObject matches this Filter.

Parameters:

object - MatchableObject to be tested

Returns:

true, if the Filter evaluates to true, else false

Throws:

FilterEvaluationException - if the evaluation fails