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Apache Neethi provides general framework for the programmers to use WS Policy. It is compliant with latest WS Policy specification which was published in March 2006. This framework is specifically written to enable the Apache Web services stack to use WS Policy as a way of expressing it's requirements and capabilities.

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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.neethi;

import java.util.List;

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

/** 
 * All is a PolicyOperator that require all its PolicyComponents to be met.
 */
public class All extends AbstractPolicyOperator {
    
    public All() {
        super();
    }
    public All(PolicyOperator parent) {
        super(parent);
    }
    
    /**
     * Adds an assertion to its PolicyComponent list.
     * 
     * @param assertion the assertion to be added.
     */
    public void addAssertion(Assertion assertion) {
        addPolicyComponent(assertion);
    }

    /**
     * Returns a List of it's PolicyComponents.
     * 
     * @return a List of it's PolicyComponents
     */
    public List getAssertions() {
        return policyComponents;
    }

    
    public void serialize(XMLStreamWriter writer) throws XMLStreamException {
        String namespace = Constants.findPolicyNamespace(writer);
        String prefix = writer.getPrefix(namespace);

        if (prefix == null) {
            writer.writeStartElement(Constants.ATTR_WSP, Constants.ELEM_ALL, namespace);
            writer.writeNamespace(Constants.ATTR_WSP, namespace);
            writer.setPrefix(Constants.ATTR_WSP, namespace);
        } else {
            writer.writeStartElement(namespace, Constants.ELEM_ALL);
        }

        for (PolicyComponent policyComponent : getPolicyComponents()) {
            policyComponent.serialize(writer);
        }

        writer.writeEndElement();
    }

    /**
     * Returns Constants.TYPE_ALL
     */
    public short getType() {
        return Constants.TYPE_ALL;
    }
}