/*
* Geotoolkit - An Open Source Java GIS Toolkit
* http://www.geotoolkit.org
*
* (C) 2012, 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.capability;
import java.util.Collection;
import java.util.List;
import org.apache.sis.internal.util.UnmodifiableArrayList;
import org.opengis.filter.capability.TemporalOperand;
import org.opengis.filter.capability.TemporalOperator;
/**
* Immutable temporal operator.
*
* @author Johann Sorel (Geomatys)
* @module
*/
public class DefaultTemporalOperator extends DefaultOperator implements TemporalOperator{
private final List<TemporalOperand> operands;
public DefaultTemporalOperator(final String name, final TemporalOperand[] operands) {
super(name);
if(operands == null || operands.length == 0){
throw new IllegalArgumentException("Operands list can not be null or empty");
}
//use a threadsafe optimized immutable list
this.operands = UnmodifiableArrayList.wrap(operands.clone());
}
/**
* {@inheritDoc }
*/
@Override
public Collection<TemporalOperand> getTemporalOperands() {
return operands;
}
/**
* {@inheritDoc }
*/
@Override
public boolean equals(final Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final DefaultTemporalOperator other = (DefaultTemporalOperator) obj;
if (this.operands != other.operands && (this.operands == null || !this.operands.equals(other.operands))) {
return false;
}
return true;
}
/**
* {@inheritDoc }
*/
@Override
public int hashCode() {
int hash = 7;
hash = 13 * hash + (this.operands != null ? this.operands.hashCode() : 0);
return hash;
}
}