/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
/*
* Copyright 2003-2004 The Apache Software Foundation.
*
* Licensed 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 com.sun.org.apache.xml.internal.security.encryption;
import java.util.Iterator;
/**
* <code>ReferenceList</code> is an element that contains pointers from a key
* value of an <code>EncryptedKey</code> to items encrypted by that key value
* (<code>EncryptedData</code> or <code>EncryptedKey</code> elements).
* <p>
* It is defined as follows:
* <xmp>
* <element name='ReferenceList'>
* <complexType>
* <choice minOccurs='1' maxOccurs='unbounded'>
* <element name='DataReference' type='xenc:ReferenceType'/>
* <element name='KeyReference' type='xenc:ReferenceType'/>
* </choice>
* </complexType>
* </element>
* </xmp>
*
* @author Axl Mattheus
* @see Reference
*/
public interface ReferenceList {
/** DATA TAG */
public static final int DATA_REFERENCE = 0x00000001;
/** KEY TAG */
public static final int KEY_REFERENCE = 0x00000002;
/**
* Adds a reference to this reference list.
*
* @param reference the reference to add.
* @throws IllegalAccessException if the <code>Reference</code> is not an
* instance of <code>DataReference</code> or <code>KeyReference</code>.
*/
public void add(Reference reference);
/**
* Removes a reference from the <code>ReferenceList</code>.
*
* @param reference the reference to remove.
*/
public void remove(Reference reference);
/**
* Returns the size of the <code>ReferenceList</code>.
*
* @return the size of the <code>ReferenceList</code>.
*/
public int size();
/**
* Indicates if the <code>ReferenceList</code> is empty.
*
* @return <code><b>true</b></code> if the <code>ReferenceList</code> is
* empty, else <code><b>false</b></code>.
*/
public boolean isEmpty();
/**
* Returns an <code>Iterator</code> over all the <code>Reference</code>s
* contatined in this <code>ReferenceList</code>.
*
* @return Iterator.
*/
public Iterator getReferences();
/**
* <code>DataReference</code> factory method. Returns a
* <code>DataReference</code>.
* @param uri
* @return
*/
public Reference newDataReference(String uri);
/**
* <code>KeyReference</code> factory method. Returns a
* <code>KeyReference</code>.
* @param uri
* @return
*/
public Reference newKeyReference(String uri);
}