/*
* Geotoolkit - An Open Source Java GIS Toolkit
* http://www.geotoolkit.org
*
* (C) 2002-2008, Open Source Geospatial Foundation (OSGeo)
* (C) 2009, Geomatys
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotoolkit.filter.binaryexpression;
import org.geotoolkit.util.StringUtilities;
import org.opengis.filter.expression.Divide;
import org.opengis.filter.expression.Expression;
import org.opengis.filter.expression.ExpressionVisitor;
/**
* Immutable "divide" expression.
*
* @author Johann Sorel (Geomatys)
* @module
*/
public class DefaultDivide extends AbstractBinaryExpression<Expression,Expression> implements Divide{
public DefaultDivide(final Expression left, final Expression right) {
super(left,right);
}
/**
* {@inheritDoc }
*/
@Override
public Object evaluate(final Object object) {
final Double val1 = left.evaluate(object, Double.class);
final Double val2 = right.evaluate(object, Double.class);
if(val1 == null || val2 == null){
return null;
}
return val1 / val2;
}
/**
* {@inheritDoc }
*/
@Override
public Object accept(final ExpressionVisitor visitor, final Object extraData) {
return visitor.visit(this, extraData);
}
/**
* {@inheritDoc }
*/
@Override
public String toString() {
final StringBuilder sb = new StringBuilder("Divide \n");
sb.append(StringUtilities.toStringTree(left,right));
return sb.toString();
}
/**
* {@inheritDoc }
*/
@Override
public boolean equals(final Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final AbstractBinaryExpression other = (AbstractBinaryExpression) obj;
if (this.left != other.left && !this.left.equals(other.left)) {
return false;
}
if (this.right != other.right && !this.right.equals(other.right)) {
return false;
}
return true;
}
/**
* {@inheritDoc }
*/
@Override
public int hashCode() {
int hash = 6;
hash = 53 * hash + this.left.hashCode() ;
hash = 53 * hash + this.right.hashCode() ;
return hash;
}
}