001/*
002 * (C) Copyright 2006-20012 Nuxeo SAS (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Nuxeo - initial API and implementation
016 *
017 */
018
019package org.nuxeo.template.samples.importer;
020
021import java.io.BufferedInputStream;
022import java.io.File;
023import java.io.FileInputStream;
024import java.io.IOException;
025
026import org.dom4j.Document;
027import org.dom4j.DocumentException;
028import org.dom4j.io.SAXReader;
029import org.nuxeo.common.utils.Path;
030import org.nuxeo.ecm.core.api.Blobs;
031import org.nuxeo.ecm.core.io.ExportConstants;
032import org.nuxeo.ecm.core.io.ExportedDocument;
033import org.nuxeo.ecm.core.io.impl.AbstractDocumentReader;
034import org.nuxeo.ecm.core.io.impl.ExportedDocumentImpl;
035
036/**
037 * CoreIO reader used to read a exploded XML archive.
038 * <p>
039 * This format is used here to make changes in the models easier
040 *
041 * @author <a href="mailto:tdelprat@nuxeo.com">Tiry</a>
042 */
043public class XMLModelReader extends AbstractDocumentReader {
044
045    protected File source;
046
047    protected boolean done;
048
049    protected String modelName;
050
051    public XMLModelReader(File source, String modelName) {
052        this.source = source;
053        this.done = false;
054        this.modelName = modelName;
055    }
056
057    @Override
058    public void close() {
059        source = null;
060    }
061
062    @Override
063    public ExportedDocument read() throws IOException {
064        if (done) {
065            return null;
066        }
067        ExportedDocument xdoc = new ExportedDocumentImpl();
068        for (File file : source.listFiles()) {
069            if (file.isFile()) {
070                String name = file.getName();
071                if (ExportConstants.DOCUMENT_FILE.equals(name)) {
072                    Document doc = loadXML(file);
073                    xdoc.setDocument(doc);
074                    xdoc.setPath(new Path(modelName));
075                } else { // presume a blob
076                    xdoc.putBlob(file.getName(), Blobs.createBlob(file));
077                }
078            }
079        }
080        done = true;
081        return xdoc;
082    }
083
084    private static Document loadXML(File file) throws IOException {
085        BufferedInputStream in = null;
086        try {
087            in = new BufferedInputStream(new FileInputStream(file));
088            return new SAXReader().read(in);
089        } catch (DocumentException e) {
090            IOException ioe = new IOException("Failed to read file document " + file + ": " + e.getMessage());
091            ioe.setStackTrace(e.getStackTrace());
092            throw ioe;
093        } finally {
094            if (in != null) {
095                in.close();
096            }
097        }
098    }
099
100}