/**
* Copyright (C) 2015 Valkyrie RCP
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.valkyriercp.rules.constraint;
import java.util.Iterator;
/**
* A "and" compound constraint (aka conjunction).
*
* @author Keith Donald
*/
public class And extends CompoundConstraint {
/**
* Creates a empty And conjunction.
*/
public And() {
super();
}
/**
* "Ands" two constraints.
*
* @param constraint1
* The first constraint.
* @param constraint2
* The second constraint.
*/
public And(Constraint constraint1, Constraint constraint2) {
super(constraint1, constraint2);
}
/**
* "Ands" the specified constraints.
*
* @param constraints
* The constraints
*/
public And(Constraint[] constraints) {
super(constraints);
}
/**
* Tests if all of the constraints aggregated by this compound constraint
* return <code>true</code> when evaulating this argument.
*
* @see Constraint#test(java.lang.Object)
*/
public boolean test(Object argument) {
for (Iterator i = iterator(); i.hasNext();) {
if (!((Constraint)i.next()).test(argument)) {
return false;
}
}
return true;
}
}