001: /*
002: * $Id: JavaUrl.java,v 1.3 2002/02/24 02:10:19 skavish Exp $
003: *
004: * ==========================================================================
005: *
006: * The JGenerator Software License, Version 1.0
007: *
008: * Copyright (c) 2000 Dmitry Skavish (skavish@usa.net). All rights reserved.
009: *
010: * Redistribution and use in source and binary forms, with or without
011: * modification, are permitted provided that the following conditions are met:
012: *
013: * 1. Redistributions of source code must retain the above copyright
014: * notice, this list of conditions and the following disclaimer.
015: *
016: * 2. Redistributions in binary form must reproduce the above copyright
017: * notice, this list of conditions and the following disclaimer in
018: * the documentation and/or other materials provided with the
019: * distribution.
020: *
021: * 3. The end-user documentation included with the redistribution, if
022: * any, must include the following acknowlegement:
023: * "This product includes software developed by Dmitry Skavish
024: * (skavish@usa.net, http://www.flashgap.com/)."
025: * Alternately, this acknowlegement may appear in the software itself,
026: * if and wherever such third-party acknowlegements normally appear.
027: *
028: * 4. The name "The JGenerator" must not be used to endorse or promote
029: * products derived from this software without prior written permission.
030: * For written permission, please contact skavish@usa.net.
031: *
032: * 5. Products derived from this software may not be called "The JGenerator"
033: * nor may "The JGenerator" appear in their names without prior written
034: * permission of Dmitry Skavish.
035: *
036: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
037: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
038: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
039: * DISCLAIMED. IN NO EVENT SHALL DMITRY SKAVISH OR THE OTHER
040: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
041: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
042: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
043: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
044: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
045: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
046: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
047: * SUCH DAMAGE.
048: *
049: */
050:
051: package org.openlaszlo.iv.flash.url;
052:
053: import java.lang.reflect.*;
054: import java.io.*;
055: import java.util.*;
056: import java.net.*;
057: import java.sql.*;
058: import org.openlaszlo.iv.flash.util.*;
059: import org.openlaszlo.iv.flash.api.*;
060:
061: /**
062: * Implementation of fgjava:// url
063: * <P>
064: * Syntax is: fgjava:///classname?parm1=value1&....
065: * <P>
066: * The class has to implement method:
067: * <code><pre>
068: * InputStream getStream( Hashtable parms );
069: * </pre></code>
070: *
071: * @author Dmitry Skavish
072: */
073: public class JavaUrl extends IVUrl {
074:
075: private Class clazz;
076:
077: public JavaUrl(String surl) throws IVException {
078: parse(surl);
079: }
080:
081: protected void parse(String s) throws IVException {
082: int idx = s.indexOf('?');
083: if (idx >= 0 && idx < 10) {
084: throw new IVException(Resource.INVALURL, new Object[] { s });
085: }
086:
087: String className;
088: if (idx == -1) {
089: className = s.substring(10);
090: } else {
091: className = s.substring(10, idx);
092: }
093: try {
094: clazz = Class.forName(className);
095: } catch (Exception e) {
096: throw new IVException(Resource.INVALURL,
097: new Object[] { s }, e);
098: }
099:
100: if (idx >= 0)
101: parse(s, idx);
102: }
103:
104: public String getName() {
105: return clazz.getName();
106: }
107:
108: public InputStream getInputStream() throws IOException {
109: InputStream is = null;
110: try {
111: Method getStream = clazz.getMethod("getStream",
112: new Class[] { Hashtable.class });
113: is = (InputStream) getStream.invoke(null,
114: new Object[] { parms });
115: } catch (Exception e) {
116: throw new IOException(e.getLocalizedMessage());
117: }
118: // fgjava: urls are allowed to return a null stream
119: // http://www.macromedia.com/go/15196
120: if (is == null)
121: throw new IOException("null input stream");
122: return is;
123: }
124:
125: }
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