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/*
 * 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.tuscany.sca.binding.ws.axis2.policy.header;

import java.util.List;

import org.apache.tuscany.sca.assembly.EndpointReference;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.invocation.PhasedInterceptor;
import org.apache.tuscany.sca.policy.PolicySet;
import org.apache.tuscany.sca.provider.PolicyProvider;

/**
 * @version $Rev$ $Date$
 */
public class Axis2HeaderReferencePolicyProvider implements PolicyProvider {
    private EndpointReference endpointReference;

    public Axis2HeaderReferencePolicyProvider(EndpointReference endpointReference) {
        super();
        this.endpointReference = endpointReference;
    }

    private PolicySet findPolicySet() {
        List<PolicySet> policySets = endpointReference.getPolicySets();
        for (PolicySet ps : policySets) {
            for (Object p : ps.getPolicies()) {
                if (Axis2HeaderPolicy.class.isInstance(p)) {
                    return ps;
                }
            }
        }
        return null;
    }

    private String getContext() {
        return endpointReference.getURI();
    }
    
    /**
     * @see org.apache.tuscany.sca.provider.PolicyProvider#createInterceptor(org.apache.tuscany.sca.interfacedef.Operation)
     */
    public PhasedInterceptor createInterceptor(Operation operation) {
        PolicySet ps = findPolicySet();
        return ps == null ? null : new Axis2HeaderReferencePolicyInterceptor(getContext(), operation, ps);
    }

    public void start() {
    }

    public void stop() {
    }

}