org.deegree.model.filterencoding
Class ComplexFilter

java.lang.Object
  org.deegree.model.filterencoding.AbstractFilter
      org.deegree.model.filterencoding.ComplexFilter

All Implemented Interfaces:

Filter

public class ComplexFilter
extends AbstractFilter

Encapsulates the information of a element that contains an Operation (only) (as defined in the Filter DTD). Operation is one of the following types:

• spatial_ops
• comparison_ops
• logical_ops

Version:

06.08.2002

Author:

Markus Schneider

Constructor Summary

ComplexFilter(ComplexFilter filter1, ComplexFilter filter2, int operatorId)
Constructs a new ComplexFilter that consists of a LogicalOperation with the given Filter.

ComplexFilter(int operatorId)
Constructs a new ComplexFilter that consists of an empty LogicalOperation of the given type.

ComplexFilter(Operation operation)
Constructs a new ComplexFilter based on the given operation.

Method Summary

boolean	evaluate(Feature feature) Calculates the Filter's logical value based on the certain property values of the given feature.
Operation	getOperation() Returns the contained Operation.
StringBuffer	toXML() Produces an indented XML representation of this object.

Methods inherited from class org.deegree.model.filterencoding.AbstractFilter

buildFromDOM, buildFromDOM

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ComplexFilter

public ComplexFilter(Operation operation)

Constructs a new ComplexFilter based on the given operation.

ComplexFilter

public ComplexFilter(int operatorId)

Constructs a new ComplexFilter that consists of an empty LogicalOperation of the given type.

Parameters:

operatorId - OperationDefines.AND, OperationDefines.OR or OperationDefines.NOT

Throws:

FilterConstructionException

ComplexFilter

public ComplexFilter(ComplexFilter filter1,
                     ComplexFilter filter2,
                     int operatorId)

Constructs a new ComplexFilter that consists of a LogicalOperation with the given Filter.

Parameters:

filter1 - first Filter to be used

filter2 - second Filter to be used null, if operatorId == OperationDefines.NOT

operatorId - OperationDefines.AND, OperationDefines.OR or OperationDefines.NOT

Throws:

FilterConstructionException

Method Detail

getOperation

public Operation getOperation()

Returns the contained Operation.

evaluate

public boolean evaluate(Feature feature)
                 throws FilterEvaluationException

Calculates the Filter's logical value based on the certain property values of the given feature.

Parameters:

feature - that determines the values of PropertyNames in the expression

Returns:

true, if the Filter evaluates to true, else false

Throws:

FilterEvaluationException - if the evaluation fails

toXML

public StringBuffer toXML()

Produces an indented XML representation of this object.

Specified by:

toXML in interface Filter

Specified by:

toXML in class AbstractFilter

Returns:

an XML representation of this object