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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.cxf.ws.security.policy.model;

import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;

import org.apache.cxf.ws.policy.PolicyBuilder;
import org.apache.cxf.ws.policy.builder.primitive.PrimitiveAssertion;
import org.apache.cxf.ws.security.policy.SP12Constants;
import org.apache.cxf.ws.security.policy.SPConstants;
import org.apache.neethi.All;
import org.apache.neethi.ExactlyOne;
import org.apache.neethi.Policy;
import org.apache.neethi.PolicyComponent;

public class TransportBinding extends Binding {

    private TransportToken transportToken;

    public TransportBinding(SPConstants version, PolicyBuilder b) {
        super(version, b);
    }

    /**
     * @return Returns the transportToken.
     */
    public TransportToken getTransportToken() {
        return transportToken;
    }

    /**
     * @param transportToken The transportToken to set.
     */
    public void setTransportToken(TransportToken transportToken) {
        this.transportToken = transportToken;
    }

    public QName getRealName() {
        return constants.getTransportBinding();
    }
    public QName getName() {
        return SP12Constants.INSTANCE.getTransportBinding();
    }


    public void serialize(XMLStreamWriter writer) throws XMLStreamException {
        String localName = getRealName().getLocalPart();
        String namespaceURI = getRealName().getNamespaceURI();

        String prefix = writer.getPrefix(namespaceURI);

        if (prefix == null) {
            prefix = getRealName().getPrefix();
            writer.setPrefix(prefix, namespaceURI);
        }

        // 
        writer.writeStartElement(prefix, localName, namespaceURI);
        writer.writeNamespace(prefix, namespaceURI);

        String pPrefix = writer.getPrefix(SPConstants.POLICY.getNamespaceURI());
        if (pPrefix == null) {
            pPrefix = SPConstants.POLICY.getPrefix();
            writer.setPrefix(pPrefix, SPConstants.POLICY.getNamespaceURI());
        }

        // 
        writer.writeStartElement(pPrefix, SPConstants.POLICY.getLocalPart(), SPConstants.POLICY
            .getNamespaceURI());

        if (transportToken == null) {
            // TODO more meaningful exception
            throw new RuntimeException("no TransportToken found");
        }

        // 
        transportToken.serialize(writer);
        // 

        AlgorithmSuite algorithmSuite = getAlgorithmSuite();
        if (algorithmSuite == null) {
            throw new RuntimeException("no AlgorithmSuite found");
        }

        // 
        algorithmSuite.serialize(writer);
        // 

        Layout layout = getLayout();
        if (layout != null) {
            // 
            layout.serialize(writer);
            // 
        }

        if (isIncludeTimestamp()) {
            // 
            writer.writeStartElement(prefix, SPConstants.INCLUDE_TIMESTAMP, namespaceURI);
            writer.writeEndElement();
            // 
        }

        // 
        writer.writeEndElement();

        // 
        writer.writeEndElement();

    }
    public PolicyComponent normalize() {
        return this;
    }
    public Policy getPolicy() {
        Policy p = new Policy();
        ExactlyOne ea = new ExactlyOne();
        p.addPolicyComponent(ea);
        All all = new All();
        if (transportToken != null) {
            all.addPolicyComponent(transportToken);
        }
        if (isIncludeTimestamp()) {
            all.addPolicyComponent(new PrimitiveAssertion(SP12Constants.INCLUDE_TIMESTAMP));
        }
        if (getLayout() != null) {
            all.addPolicyComponent(getLayout());
        }
        ea.addPolicyComponent(all);
        PolicyComponent pc = p.normalize(builder.getPolicyRegistry(), true);
        if (pc instanceof Policy) {
            return (Policy)pc;
        } else {
            p = new Policy();
            p.addPolicyComponent(pc);
            return p;
        }
    }
}