Source Code Cross Referenced for RemoteDirResource.java in  » J2EE » Enhydra-Application-Framework » com » lutris » classloader » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » Enhydra Application Framework » com.lutris.classloader 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Enhydra Java Application Server Project
003:         *
004:         * The contents of this file are subject to the Enhydra Public License
005:         * Version 1.1 (the "License"); you may not use this file except in
006:         * compliance with the License. You may obtain a copy of the License on
007:         * the Enhydra web site ( http://www.enhydra.org/ ).
008:         *
009:         * Software distributed under the License is distributed on an "AS IS"
010:         * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
011:         * the License for the specific terms governing rights and limitations
012:         * under the License.
013:         *
014:         * The Initial Developer of the Enhydra Application Server is Lutris
015:         * Technologies, Inc. The Enhydra Application Server and portions created
016:         * by Lutris Technologies, Inc. are Copyright Lutris Technologies, Inc.
017:         * All Rights Reserved.
018:         *
019:         * Contributor(s):
020:         *
021:         * $Id: RemoteDirResource.java,v 1.2 2006-06-15 14:07:00 sinisa Exp $
022:         */
023:
024:        package com.lutris.classloader;
025:
026:        // lutris packages
027:        // v. strahinja, 27 sep 2002
028:        import java.io.FileNotFoundException;
029:        import java.io.IOException;
030:        import java.io.InputStream;
031:        import java.net.MalformedURLException;
032:        import java.net.URL;
033:        import java.net.URLConnection;
034:
035:        import com.lutris.logging.LogChannel;
036:
037:        /**
038:         * <P>A <CODE>Resource</CODE> that is a file on a remote machine in
039:         * a specified directory.  The directory is represented by a
040:         * <CODE>ClassPathEntry</CODE>, and the filename is specified by a String.
041:         *
042:         * @author Kristen Pol, Lutris Technologies
043:         * @version $Revision : 1.1 $
044:         * @see com.lutris.classloader.MultiClassLoader
045:         * @see com.lutris.classloader.ClassPathEntry
046:         * @see com.lutris.classloader.Resource
047:         * @see java.io.File
048:         */
049:        public class RemoteDirResource extends Resource {
050:
051:            // data members
052:
053:            private URL url = null;
054:
055:            // constructors
056:
057:            // FIXME: Test and change to protected and add javadoc. (kp)
058:            private RemoteDirResource(String name, ClassPathEntry location,
059:            // v. strahinja, 27 sep 2002
060:                    LogChannel loadLogChannel)
061:            //                              Logger loadLogger)
062:                    throws FileNotFoundException {
063:                // v. strahinja, 27 sep 2002
064:                super (name, location, loadLogChannel);
065:                //	super(name, location, loadLogger);
066:
067:                // Get location's URL
068:                URL locURL = location.getURL();
069:                if (locURL == null) {
070:                    throw new FileNotFoundException("The URL for location, "
071:                            + location + ", is null");
072:                }
073:
074:                // Create a new URL from location's URL and resource name
075:                try {
076:                    url = new URL(locURL.toString() + name);
077:                } catch (MalformedURLException mue) {
078:                    throw new FileNotFoundException(
079:                            "The URL can not be created from the name " + name
080:                                    + ", and location " + locURL + ": "
081:                                    + mue.getMessage());
082:                }
083:
084:                // Get the URLConnection so size and time can be determined
085:                URLConnection connection;
086:                try {
087:                    connection = url.openConnection();
088:                } catch (IOException ioe) {
089:                    throw new FileNotFoundException("URL, " + url
090:                            + ", does not exist or can not be reached");
091:                }
092:                size = connection.getContentLength();
093:                lastModifiedTime = connection.getLastModified();
094:                //FIXME: Connection must be closed
095:            }
096:
097:            // public methods
098:
099:            public InputStream getInputStream() throws IOException {
100:                return url.openStream();
101:            }
102:
103:            /**
104:             * Get current last-modification time of resource.  This is the
105:             * time on the disk file the resource is associated with.
106:             *
107:             * @return the last-modified time of the permanent copy of the resource
108:             * in milliseconds.
109:             */
110:            public long getCurrentLastModifiedTime() {
111:                return -1; //FIXME: IMPLEMENT
112:            }
113:        }
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