/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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.apache.cxf.sts.token.realm;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class RelationshipResolver {

    private Map<String, Relationship> relationshipMap;
    
    
    public RelationshipResolver(List<Relationship> relationships) {
        relationshipMap = new HashMap<String, Relationship>();
        for (Relationship rel : relationships) {
            String key = generateKey(rel.getSourceRealm(), rel.getTargetRealm());
            relationshipMap.put(key, rel);
        }
    }
    
    public Relationship resolveRelationship(String sourceRealm, String targetRealm) {
        String key = generateKey(sourceRealm, targetRealm);
        return relationshipMap.get(key);
    }
    
    
    private String generateKey(String sourceRealm, String targetRealm) {
        return new StringBuffer().append(sourceRealm).append(">").append(targetRealm).toString();
        
    }
    
    
}
