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XMLTooling-J is a low-level library that may be used to construct libraries that allow developers to work with XML in a Java beans manner.

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/*
 * Licensed to the University Corporation for Advanced Internet Development, 
 * Inc. (UCAID) under one or more contributor license agreements.  See the 
 * NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The UCAID 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.opensaml.xml.encryption.impl;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.opensaml.xml.XMLObject;
import org.opensaml.xml.encryption.EncryptionProperties;
import org.opensaml.xml.encryption.EncryptionProperty;
import org.opensaml.xml.util.XMLObjectChildrenList;
import org.opensaml.xml.validation.AbstractValidatingXMLObject;

/**
 * Concrete implementation of {@link org.opensaml.xml.encryption.EncryptionProperties}.
 */
public class EncryptionPropertiesImpl extends AbstractValidatingXMLObject implements EncryptionProperties {
    
    /** Id attribute value. */
    private String id;
    
    /** EncryptionProperty child elements. */
    private final XMLObjectChildrenList encryptionProperties;

    /**
     * Constructor.
     *
     * @param namespaceURI
     * @param elementLocalName
     * @param namespacePrefix
     */
    protected EncryptionPropertiesImpl(String namespaceURI, String elementLocalName, String namespacePrefix) {
        super(namespaceURI, elementLocalName, namespacePrefix);
        encryptionProperties = new XMLObjectChildrenList(this);
    }

    /** {@inheritDoc} */
    public String getID() {
        return this.id;
    }

    /** {@inheritDoc} */
    public void setID(String newID) {
        String oldID = this.id;
        this.id = prepareForAssignment(this.id, newID);
        registerOwnID(oldID, this.id);
    }

    /** {@inheritDoc} */
    public List getEncryptionProperties() {
        return (List) encryptionProperties;
    }

    /** {@inheritDoc} */
    public List getOrderedChildren() {
        ArrayList children = new ArrayList();
        
        children.addAll((List) encryptionProperties);
        
        if (children.size() == 0) {
            return null;
        }
        
        return Collections.unmodifiableList(children);
    }

}