/*
 * Copyright 2008 the original author or authors.
 * 
 * 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.wamblee.system.container;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.wamblee.system.core.Component;
import org.wamblee.system.core.ProvidedInterface;
import org.wamblee.system.core.RequiredInterface;


/**
 * Composite restriction that wraps a number of other restrictions. The restriction is 
 * violated if one of the contained restrictions is violated. 
 * 
 * @author Erik Brakkee
 *
 */
public class CompositeInterfaceRestriction implements InterfaceRestriction {
    
    private List<InterfaceRestriction> _restrictions; 
    
    /**
     * Constructs the restriction. 
     */
    public CompositeInterfaceRestriction() { 
        _restrictions = new ArrayList<InterfaceRestriction>();
    }
    
    /**
     * Constructs the restriction. 
     * @param aRestrictions List of contained restrictions. 
     */
    public CompositeInterfaceRestriction(Collection<InterfaceRestriction> aRestrictions) { 
        this(); 
        _restrictions.addAll(aRestrictions);
    }
    
    /**
     * Adds a restriction. 
     * @param aRestriction Restriction. 
     * @return Reference to this composite restriction to allow call chaining. 
     */
    public CompositeInterfaceRestriction add(InterfaceRestriction aRestriction) { 
        _restrictions.add(aRestriction);
        return this; 
    }

    @Override
    public boolean isViolated(Component aClient, RequiredInterface aRequired,
            Component aServer, ProvidedInterface aProvided) {
        for (InterfaceRestriction restriction: _restrictions) { 
            if ( restriction.isViolated(aClient, aRequired, aServer, aProvided)) { 
                return true; 
            }
        }
        return false; 
    }

}