001: /**
002: * Redistribution and use of this software and associated documentation
003: * ("Software"), with or without modification, are permitted provided
004: * that the following conditions are met:
005: *
006: * 1. Redistributions of source code must retain copyright
007: * statements and notices. Redistributions must also contain a
008: * copy of this document.
009: *
010: * 2. Redistributions in binary form must reproduce the
011: * above copyright notice, this list of conditions and the
012: * following disclaimer in the documentation and/or other
013: * materials provided with the distribution.
014: *
015: * 3. The name "Exolab" must not be used to endorse or promote
016: * products derived from this Software without prior written
017: * permission of Intalio, Inc. For written permission,
018: * please contact info@exolab.org.
019: *
020: * 4. Products derived from this Software may not be called "Exolab"
021: * nor may "Exolab" appear in their names without prior written
022: * permission of Intalio, Inc. Exolab is a registered
023: * trademark of Intalio, Inc.
024: *
025: * 5. Due credit should be given to the Exolab Project
026: * (http://www.exolab.org/).
027: *
028: * THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS
029: * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
030: * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
031: * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
032: * INTALIO, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
033: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
034: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
035: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
036: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
037: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
038: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
039: * OF THE POSSIBILITY OF SUCH DAMAGE.
040: *
041: * Copyright 1999 (C) Intalio, Inc. All Rights Reserved.
042: *
043: * $Id: Importer.java 5951 2006-05-30 22:18:48Z bsnyder $
044: */package org.exolab.castor.dsml;
045:
046: import java.io.IOException;
047: import java.io.InputStream;
048: import java.io.Reader;
049: import java.util.Enumeration;
050: import java.util.TooManyListenersException;
051: import org.xml.sax.SAXException;
052: import org.xml.sax.Parser;
053: import org.xml.sax.InputSource;
054: import org.castor.util.Messages;
055: import org.exolab.castor.util.Configuration;
056: import org.exolab.castor.util.LocalConfiguration;
057:
058: /**
059: *
060: *
061: * @author <a href="mailto:arkin@intalio.com">Assaf Arkin</a>
062: * @version $Revision: 5951 $ $Date: 2006-04-10 16:39:24 -0600 (Mon, 10 Apr 2006) $
063: */
064: public abstract class Importer {
065:
066: private Configuration _config = LocalConfiguration.getInstance();
067:
068: private ImportDescriptor _importDesc;
069:
070: private ImportEventListener _listener;
071:
072: public void setImportDescriptor(ImportDescriptor importDesc) {
073: _importDesc = importDesc;
074: }
075:
076: public ImportDescriptor getImportDescriptor() {
077: if (_importDesc == null)
078: _importDesc = new ImportDescriptor();
079: return _importDesc;
080: }
081:
082: public void setImportEventListener(ImportEventListener listener)
083: throws TooManyListenersException {
084: if (_listener != null)
085: throw new TooManyListenersException(Messages
086: .message("dsml.onlyOneListener"));
087: _listener = listener;
088: }
089:
090: public ImportEventListener getImportEventListener() {
091: return _listener;
092: }
093:
094: public void importDocument(InputStream stream)
095: throws ImportExportException {
096: importDocument(_config.getParser(), new InputSource(stream));
097: }
098:
099: public void importDocument(Reader reader)
100: throws ImportExportException {
101: importDocument(_config.getParser(), new InputSource(reader));
102: }
103:
104: public void importDocument(Parser parser, InputSource input)
105: throws ImportExportException {
106: Consumer consumer;
107:
108: consumer = createConsumer();
109: parser.setDocumentHandler(consumer);
110: try {
111: parser.parse(input);
112: } catch (SAXException except) {
113: throw new ImportExportException(except);
114: } catch (IOException except) {
115: throw new ImportExportException(except);
116: }
117: if (consumer.getResults() != null) {
118: importEntries(consumer.getResults());
119: }
120: }
121:
122: public void readImportDescriptor(InputStream input)
123: throws IOException, SAXException {
124: readImportDescriptor(_config.getParser(),
125: new InputSource(input));
126: }
127:
128: public void readImportDescriptor(Reader input) throws IOException,
129: SAXException {
130: readImportDescriptor(_config.getParser(),
131: new InputSource(input));
132: }
133:
134: protected void readImportDescriptor(Parser parser, InputSource input)
135: throws IOException, SAXException {
136: ImportDescriptor desc;
137:
138: desc = new ImportDescriptor();
139: parser.setDocumentHandler(desc);
140: parser.parse(input);
141: setImportDescriptor(desc);
142: }
143:
144: protected void notify(String name, int flag) {
145: if (_listener != null) {
146: _listener.processedEntry(name, flag);
147: }
148: }
149:
150: protected abstract Consumer createConsumer();
151:
152: public abstract void importEntries(Enumeration enumeration)
153: throws ImportExportException;
154:
155: }
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