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 *     bstefanescu
018 */
019package org.nuxeo.ecm.core.event.script;
020
021import java.io.File;
022import java.io.FileReader;
023import java.io.IOException;
024import java.io.Reader;
025
026/**
027 * Script that comes from a file.
028 *
029 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
030 */
031public class FileScript extends Script {
032
033    protected final File file;
034
035    public FileScript(File file) {
036        this.file = file;
037    }
038
039    public FileScript(String path) {
040        this(new File(path));
041    }
042
043    @Override
044    public String getExtension() {
045        return getExtension(file.getPath());
046    }
047
048    @Override
049    public String getLocation() {
050        return file.getAbsolutePath();
051    }
052
053    @Override
054    public Reader getReader() throws IOException {
055        return new FileReader(file);
056    }
057
058    @Override
059    public Reader getReaderIfModified() throws IOException {
060        long tm = file.lastModified();
061        if (tm > lastModified) {
062            synchronized (this) {
063                if (tm > lastModified) {
064                    lastModified = tm;
065                    return new FileReader(file);
066                }
067            }
068        }
069        return null;
070    }
071
072}