001/*
002 * Copyright (c) 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the Eclipse Public License v1.0
006 * which accompanies this distribution, and is available at
007 * http://www.eclipse.org/legal/epl-v10.html
008 *
009 * Contributors:
010 *     Nuxeo - initial API and implementation
011 *
012 * $Id: DocumentsListReader.java 29029 2008-01-14 18:38:14Z ldoguin $
013 */
014
015package org.nuxeo.ecm.core.io.impl.plugins;
016
017import java.io.IOException;
018import java.util.ArrayList;
019import java.util.Collection;
020import java.util.Iterator;
021import java.util.List;
022
023import org.nuxeo.ecm.core.api.CoreSession;
024import org.nuxeo.ecm.core.api.DocumentModel;
025import org.nuxeo.ecm.core.api.DocumentRef;
026import org.nuxeo.ecm.core.io.ExportedDocument;
027import org.nuxeo.ecm.core.io.impl.ExportedDocumentImpl;
028
029/**
030 * Reader for a simple list of DocumentModel objects.
031 *
032 * @author <a href="mailto:dm@nuxeo.com">DM</a>
033 */
034public class DocumentsListReader extends DocumentModelReader {
035
036    private Iterator<DocumentModel> iterator;
037
038    public DocumentsListReader(CoreSession session, List<DocumentModel> docsList) {
039        super(session);
040
041        iterator = docsList.iterator();
042    }
043
044    public static DocumentsListReader createDocumentsListReader(CoreSession session, Collection<DocumentRef> docRefsList) {
045
046        List<DocumentModel> list = new ArrayList<DocumentModel>();
047
048        for (DocumentRef docRef : docRefsList) {
049            DocumentModel doc = session.getDocument(docRef);
050            list.add(doc);
051        }
052
053        return new DocumentsListReader(session, list);
054    }
055
056    @Override
057    public void close() {
058        super.close();
059        iterator = null;
060    }
061
062    @Override
063    public ExportedDocument read() throws IOException {
064        if (iterator.hasNext()) {
065            DocumentModel docModel = iterator.next();
066            return new ExportedDocumentImpl(docModel, inlineBlobs);
067        }
068        return null;
069    }
070
071}