org.deegree.model.filterencoding
Class PropertyIsCOMPOperation

java.lang.Object
  org.deegree.model.filterencoding.AbstractOperation
      org.deegree.model.filterencoding.ComparisonOperation
          org.deegree.model.filterencoding.PropertyIsCOMPOperation

All Implemented Interfaces:

Operation

public class PropertyIsCOMPOperation
extends ComparisonOperation

Encapsulates the information of a -element (as defined in Filter DTD). COMP can be one of the following:

• EqualTo
• LessThan
• GreaterThan
• LessThanOrEqualTo
• GreaterThanOrEqualTo

Version:

$Revision: 7916 $, $Date: 2007-08-06 14:23:58 +0200 (Mo, 06 Aug 2007) $

Author:

Markus Schneider, last edited by: $Author: rbezema $

Field Summary

Fields inherited from class org.deegree.model.filterencoding.AbstractOperation

operatorId

Constructor Summary

PropertyIsCOMPOperation(int id, Expression expr1, Expression expr2)
Creates a new PropertyIsCOMPOperation object.

PropertyIsCOMPOperation(int id, Expression expr1, Expression expr2, boolean matchCase)

Method Summary

static Operation	buildFromDOM(Element element) Given a DOM-fragment, a corresponding Operation-object is built.
boolean	evaluate(Feature feature) Calculates the ComparisonOperation's logical value based on the certain property values of the given Feature.
Expression	getFirstExpression() returns the first Expression of the comparison
Expression	getSecondExpression() returns the second Expression of the comparison
boolean	isMatchCase() returns matchCase flag
StringBuffer	toXML() Produces an indented XML representation of this object.

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

buildFromDOM

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

getOperatorId, getOperatorName

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertyIsCOMPOperation

public PropertyIsCOMPOperation(int id,
                               Expression expr1,
                               Expression expr2)

Creates a new PropertyIsCOMPOperation object.

Parameters:

id -

expr1 -

expr2 -

PropertyIsCOMPOperation

public PropertyIsCOMPOperation(int id,
                               Expression expr1,
                               Expression expr2,
                               boolean matchCase)

Parameters:

id -

expr1 -

expr2 -

matchCase -

Method Detail

buildFromDOM

public static Operation buildFromDOM(Element element)
                              throws FilterConstructionException

Given a DOM-fragment, a corresponding Operation-object is built. This method recursively calls other buildFromDOM () - methods to validate the structure of the DOM-fragment.

Parameters:

element -

Returns:

a Bean of the Dom

Throws:

FilterConstructionException - if the structure of the DOM-fragment is invalid

getFirstExpression

public Expression getFirstExpression()

returns the first Expression of the comparison

Returns:

the first Expression of the comparison

getSecondExpression

public Expression getSecondExpression()

returns the second Expression of the comparison

Returns:

the second Expression of the comparison

isMatchCase

public boolean isMatchCase()

returns matchCase flag

Returns:

matchCase flag

toXML

public StringBuffer toXML()

Produces an indented XML representation of this object.

Returns:

XML representation of this object.

evaluate

public boolean evaluate(Feature feature)
                 throws FilterEvaluationException

Calculates the ComparisonOperation's logical value based on the certain property values of the given Feature. TODO: Improve datatype handling.

Parameters:

feature - that determines the property values

Returns:

true, if the FeatureFilter evaluates to true, else false

Throws:

FilterEvaluationException - if the expressions to be compared are of different types