001    /*
002      GRANITE DATA SERVICES
003      Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004    
005      This file is part of Granite Data Services.
006    
007      Granite Data Services is free software; you can redistribute it and/or modify
008      it under the terms of the GNU Library General Public License as published by
009      the Free Software Foundation; either version 2 of the License, or (at your
010      option) any later version.
011    
012      Granite Data Services is distributed in the hope that it will be useful, but
013      WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014      FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015      for more details.
016    
017      You should have received a copy of the GNU Library General Public License
018      along with this library; if not, see <http://www.gnu.org/licenses/>.
019    */
020    
021    package org.granite.scan;
022    
023    import java.io.IOException;
024    import java.io.InputStream;
025    import java.util.Properties;
026    
027    /**
028     * @author Franck WOLFF
029     */
030    public abstract class AbstractScannedItem implements ScannedItem {
031    
032        private final Scanner scanner;
033        private final ScannedItem marker;
034    
035        private Class<?> clazz = null;
036        private Properties properties = null;
037    
038        public AbstractScannedItem(Scanner scanner, ScannedItem marker) {
039            this.scanner = scanner;
040            this.marker = marker;
041        }
042    
043        public ScannedItem getMarker() {
044            return marker;
045        }
046    
047        public Scanner getScanner() {
048            return scanner;
049        }
050    
051        public String getExtension() {
052            String name = getName();
053            int lastDot = name.indexOf('.');
054            return lastDot >= 0 ? name.substring(lastDot + 1) : null;
055        }
056    
057        public String getClassName() {
058            if (!"class".equals(getExtension()))
059                throw new RuntimeException("Not a valid class name: " + getAbsolutePath());
060            return getRelativePath().substring(0, getRelativePath().length() - 6).replace('/', '.');
061        }
062    
063        public byte[] getContent() throws IOException {
064            long size = getSize();
065            if (size > Integer.MAX_VALUE)
066                throw new IOException("Size over Integer.MAX_VALUE: " + size);
067    
068            InputStream is = null;
069            try {
070                is = getInputStream();
071                byte[] data = new byte[(int)size];
072                is.read(data);
073                return data;
074            } finally {
075                if (is != null)
076                    is.close();
077            }
078        }
079    
080        public Class<?> loadAsClass() throws ClassNotFoundException, IOException, ClassFormatError {
081            if (clazz == null) {
082                ClassLoader loader = scanner.getLoader();
083                if (loader instanceof ScannedItemClassLoader)
084                    clazz = ((ScannedItemClassLoader)loader).loadClass(this);
085                else
086                    clazz = loader.loadClass(getClassName());
087            }
088            return clazz;
089        }
090    
091        public Properties loadAsProperties() throws IOException, IllegalArgumentException {
092            if (properties == null) {
093                InputStream is = null;
094                try {
095                    is = getInputStream();
096                    properties = new Properties();
097                    properties.load(getInputStream());
098                } finally {
099                    if (is != null)
100                        is.close();
101                }
102            }
103            return properties;
104        }
105    
106        @Override
107        public String toString() {
108            if (marker != null)
109                return getAbsolutePath() + " [marker=" + marker + "]";
110            return getAbsolutePath();
111        }
112    }