001: /*
002: * $Id: FilterUrl.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: import org.openlaszlo.iv.flash.url.filters.*;
062:
063: /**
064: * Implementation of fgfilter:// url
065: * <P>
066: * Syntax is: fgfilter:///filtername?datasource=url&parm1=value1&....
067: *
068: * @author Dmitry Skavish
069: */
070: public class FilterUrl extends IVUrl {
071:
072: private static Hashtable filters = new Hashtable();
073:
074: private UrlFilter filter;
075: private FlashFile flashFile;
076:
077: public FilterUrl(String surl, FlashFile flashFile)
078: throws IVException {
079: this .flashFile = flashFile;
080: parse(surl);
081: }
082:
083: protected void parse(String s) throws IVException {
084: int idx = s.indexOf('?');
085: if (idx < 12) {
086: throw new IVException(Resource.INVALURL, new Object[] { s });
087: }
088:
089: String filterName = s.substring(12, idx);
090: try {
091: synchronized (getClass()) {
092: filter = (UrlFilter) filters.get(filterName);
093: if (filter == null) {
094: Class clazz = Class
095: .forName("org.openlaszlo.iv.flash.url.filters."
096: + filterName);
097: Constructor constructor = clazz
098: .getConstructor(null);
099: filter = (UrlFilter) constructor.newInstance(null);
100: filters.put(filterName, filter);
101: }
102: }
103: } catch (Exception e) {
104: throw new IVException(Resource.INVALURL,
105: new Object[] { s }, e);
106: }
107:
108: parse(s, idx);
109: }
110:
111: public String getName() {
112: String name = filter.getClass().getName();
113: return name.substring(name.lastIndexOf('.') + 1);
114: }
115:
116: public boolean hasDataReady() {
117: return true;
118: }
119:
120: public String[][] getData() throws IOException {
121: String datasource = getParameter("datasource");
122: String[][] data;
123: try {
124: UrlDataSource ds = new UrlDataSource(datasource, flashFile);
125: data = ds.getData();
126: } catch (IVException e) {
127: throw new IOException(e.getLocalizedMessage());
128: }
129: return filter.filter(data, parms);
130: }
131:
132: public InputStream getInputStream() throws IOException {
133: return arrayToStream(getData());
134: }
135:
136: }
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