001/*
002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Nuxeo - initial API and implementation
018 *
019 * $Id: DocumentChildrenReader.java 29029 2008-01-14 18:38:14Z ldoguin $
020 */
021
022package org.nuxeo.ecm.core.io.impl.plugins;
023
024import java.io.IOException;
025
026import org.nuxeo.ecm.core.api.CoreSession;
027import org.nuxeo.ecm.core.api.DocumentModel;
028import org.nuxeo.ecm.core.api.DocumentModelIterator;
029import org.nuxeo.ecm.core.api.DocumentRef;
030import org.nuxeo.ecm.core.io.ExportedDocument;
031import org.nuxeo.ecm.core.io.impl.ExportedDocumentImpl;
032
033/**
034 * @deprecated unused since 5.6
035 */
036@Deprecated
037public class DocumentChildrenReader extends DocumentModelReader {
038
039    private DocumentModelIterator iterator;
040
041    public DocumentChildrenReader(CoreSession session, DocumentModel root) {
042        super(session);
043        iterator = session.getChildrenIterator(root.getRef(), null, null, null);
044    }
045
046    public DocumentChildrenReader(CoreSession session, DocumentRef root) {
047        this(session, session.getDocument(root));
048    }
049
050    @Override
051    public void close() {
052        super.close();
053        iterator = null;
054    }
055
056    @Override
057    public ExportedDocument read() throws IOException {
058        if (iterator.hasNext()) {
059            DocumentModel docModel = iterator.next();
060            return new ExportedDocumentImpl(docModel);
061        }
062        return null;
063    }
064
065}