org.geotools.filter
Class BBoxExpressionImpl

java.lang.Object
  org.geotools.filter.expression.ExpressionAbstract
      org.geotools.filter.DefaultExpression
          org.geotools.filter.LiteralExpressionImpl
              org.geotools.filter.BBoxExpressionImpl

All Implemented Interfaces:

BBoxExpression, org.opengis.filter.expression.Expression, Expression, ExpressionType, org.opengis.filter.expression.Literal, LiteralExpression

public class BBoxExpressionImpl

extends LiteralExpressionImpl

implements BBoxExpression

Implements a Bounding Box expression.

Version:

$Id: BBoxExpressionImpl.java 18021 2006-02-14 20:36:18Z jdeolive $

Author:

Ian Turton, CCG

Field Summary

Fields inherited from class org.geotools.filter.DefaultExpression

expressionType, permissiveConstruction

Fields inherited from interface org.geotools.filter.expression.ExpressionType

ATTRIBUTE, ATTRIBUTE_DOUBLE, ATTRIBUTE_GEOMETRY, ATTRIBUTE_INTEGER, ATTRIBUTE_STRING, ATTRIBUTE_UNDECLARED, FUNCTION, LITERAL_DOUBLE, LITERAL_GEOMETRY, LITERAL_INTEGER, LITERAL_STRING, MATH_ADD, MATH_DIVIDE, MATH_MULTIPLY, MATH_SUBTRACT

Constructor Summary

protected	BBoxExpressionImpl() Creates a new instance of BBoxExpression
protected	BBoxExpressionImpl(com.vividsolutions.jts.geom.Envelope env) Creates a new instance of BBoxExpression, with an initial box.

Method Summary

void	setBounds(com.vividsolutions.jts.geom.Envelope env) Set the bbox for this expression

Methods inherited from class org.geotools.filter.LiteralExpressionImpl

accept, equals, evaluate, getLiteral, getType, getValue, hashCode, setLiteral, setValue, toString

Methods inherited from class org.geotools.filter.DefaultExpression

accept, evaluate, getValue, isAttributeExpression, isExpression, isGeometryExpression, isLiteralExpression, isMathExpression, isMathExpression

Methods inherited from class org.geotools.filter.expression.ExpressionAbstract

eval

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.geotools.filter.expression.LiteralExpression

getLiteral, getType, getValue, setLiteral

Methods inherited from interface org.geotools.filter.expression.Expression

accept, evaluate

Methods inherited from interface org.opengis.filter.expression.Expression

accept, evaluate

Methods inherited from interface org.opengis.filter.expression.Literal

getValue, setValue

Constructor Detail

BBoxExpressionImpl

protected BBoxExpressionImpl()
                      throws IllegalFilterException

Creates a new instance of BBoxExpression

Throws:

IllegalFilterException - if there are problems.

BBoxExpressionImpl

protected BBoxExpressionImpl(com.vividsolutions.jts.geom.Envelope env)
                      throws IllegalFilterException

Creates a new instance of BBoxExpression, with an initial box.

Parameters:

env - the envelope to set as the box.

Throws:

IllegalFilterException - if there are problems.

Method Detail

setBounds

public final void setBounds(com.vividsolutions.jts.geom.Envelope env)
                     throws IllegalFilterException

Set the bbox for this expression

Specified by:

setBounds in interface BBoxExpression

Parameters:

env - The envelope to set as the bounds.

Throws:

IllegalFilterException - If the box can not be created.

Task:

HACK: currently sets the SRID to null, which can cause problems with JTS when it comes to doing spatial tests