001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *   Granite Data Services is free software; you can redistribute it and/or
008 *   modify it under the terms of the GNU Lesser General Public
009 *   License as published by the Free Software Foundation; either
010 *   version 2.1 of the License, or (at your option) any later version.
011 *
012 *   Granite Data Services is distributed in the hope that it will be useful,
013 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 *   General Public License for more details.
016 *
017 *   You should have received a copy of the GNU Lesser General Public
018 *   License along with this library; if not, write to the Free Software
019 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 *   USA, or see <http://www.gnu.org/licenses/>.
021 */
022package org.granite.scan;
023
024import java.io.IOException;
025import java.io.InputStream;
026import java.util.Properties;
027
028/**
029 * @author Franck WOLFF
030 */
031public abstract class AbstractScannedItem implements ScannedItem {
032
033    private final Scanner scanner;
034    private final ScannedItem marker;
035
036    private Class<?> clazz = null;
037    private Properties properties = null;
038
039    public AbstractScannedItem(Scanner scanner, ScannedItem marker) {
040        this.scanner = scanner;
041        this.marker = marker;
042    }
043
044    public ScannedItem getMarker() {
045        return marker;
046    }
047
048    public Scanner getScanner() {
049        return scanner;
050    }
051
052    public String getExtension() {
053        String name = getName();
054        int lastDot = name.indexOf('.');
055        return lastDot >= 0 ? name.substring(lastDot + 1) : null;
056    }
057
058    public String getClassName() {
059        if (!"class".equals(getExtension()))
060            throw new RuntimeException("Not a valid class name: " + getAbsolutePath());
061        return getRelativePath().substring(0, getRelativePath().length() - 6).replace('/', '.');
062    }
063
064    public byte[] getContent() throws IOException {
065        long size = getSize();
066        if (size > Integer.MAX_VALUE)
067            throw new IOException("Size over Integer.MAX_VALUE: " + size);
068
069        InputStream is = null;
070        try {
071            is = getInputStream();
072            byte[] data = new byte[(int)size];
073            is.read(data);
074            return data;
075        } finally {
076            if (is != null)
077                is.close();
078        }
079    }
080
081    public Class<?> loadAsClass() throws ClassNotFoundException, IOException, ClassFormatError {
082        if (clazz == null) {
083            ClassLoader loader = scanner.getLoader();
084            if (loader instanceof ScannedItemClassLoader)
085                clazz = ((ScannedItemClassLoader)loader).loadClass(this);
086            else
087                clazz = loader.loadClass(getClassName());
088        }
089        return clazz;
090    }
091
092    public Properties loadAsProperties() throws IOException, IllegalArgumentException {
093        if (properties == null) {
094            InputStream is = null;
095            try {
096                is = getInputStream();
097                properties = new Properties();
098                properties.load(getInputStream());
099            } finally {
100                if (is != null)
101                    is.close();
102            }
103        }
104        return properties;
105    }
106
107    @Override
108    public String toString() {
109        if (marker != null)
110            return getAbsolutePath() + " [marker=" + marker + "]";
111        return getAbsolutePath();
112    }
113}