01: /*
02: * JBoss, Home of Professional Open Source
03: * Copyright 2005, JBoss Inc., and individual contributors as indicated
04: * by the @authors tag. See the copyright.txt in the distribution for a
05: * full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * published by the Free Software Foundation; either version 2.1 of
10: * the License, or (at your option) any later version.
11: *
12: * This software is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this software; if not, write to the Free
19: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21: */
22: package org.jbpm.jpdl.par;
23:
24: import java.io.ByteArrayInputStream;
25: import java.io.IOException;
26: import java.io.InputStream;
27:
28: import org.jbpm.graph.def.ProcessDefinition;
29: import org.jbpm.jpdl.JpdlException;
30: import org.jbpm.jpdl.xml.JpdlXmlReader;
31: import org.xml.sax.InputSource;
32:
33: public class JpdlArchiveParser implements ProcessArchiveParser {
34:
35: private static final long serialVersionUID = 1L;
36:
37: public ProcessDefinition readFromArchive(
38: ProcessArchive processArchive,
39: ProcessDefinition processDefinition) throws JpdlException {
40: try {
41: // getting the value
42: byte[] processBytes = processArchive
43: .getEntry("processdefinition.xml");
44:
45: if (processBytes == null) {
46: throw new JpdlException(
47: "no processdefinition.xml inside process archive");
48: }
49:
50: // creating the JpdlXmlReader
51: InputStream processInputStream = new ByteArrayInputStream(
52: processBytes);
53: InputSource processInputSource = new InputSource(
54: processInputStream);
55: JpdlXmlReader jpdlXmlReader = new JpdlXmlReader(
56: processInputSource, processArchive);
57:
58: processDefinition = jpdlXmlReader.readProcessDefinition();
59:
60: // close all the streams
61: jpdlXmlReader.close();
62: processInputStream.close();
63:
64: } catch (IOException e) {
65: throw new JpdlException(
66: "io problem while reading processdefinition.xml: "
67: + e.getMessage(), e);
68: }
69:
70: return processDefinition;
71: }
72: }
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