/*******************************************************************************
 * Copyright 2017 Charles University in Prague
 *  
 *  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 cz.cuni.mff.d3s.jdeeco.adaptation.componentIsolation;

import java.lang.reflect.Field;
import java.util.HashSet;
import java.util.Set;

/**
 * @author Dominik Skoda <skoda@d3s.mff.cuni.cz>
 *
 */
public class PortImpl implements cz.cuni.mff.d3s.metaadaptation.componentisolation.Port {

	private final Class<?> role;
	
	
	public PortImpl(Class<?> role){
		if(role == null){
			throw new IllegalArgumentException(String.format("The %s argument is null.", "role"));
		}
		this.role = role;
	}
	
	public Class<?> getRole(){
		return role;
	}
	
	/* (non-Javadoc)
	 * @see java.lang.Object#toString()
	 */
	@Override
	public String toString() {
		return role.getName();
	}

	/* (non-Javadoc)
	 * @see cz.cuni.mff.d3s.metaadaptation.componentisolation.Port#getExposedKnowledge()
	 */
	@Override
	public Set<String> getExposedKnowledge() {
		Set<String> exposedKnowledge = new HashSet<>();
		
		for(Field f : role.getFields()){
			exposedKnowledge.add(f.getName());
		}
		
		return exposedKnowledge;
	}
}
