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1 package org.jbpm.instantiation;
2
3 import java.io.*;
4 import org.jbpm.file.def.*;
5 import org.jbpm.graph.def.*;
6
7 public class ProcessClassLoader extends ClassLoader  {
8
9 private ProcessDefinition processDefinition = null;
10
11 public ProcessClassLoader( ClassLoader parent, ProcessDefinition processDefinition ) {
12 super(parent);
13 this.processDefinition = processDefinition;
14 }
15
16 public InputStream getResourceAsStream(String name) {
17 InputStream inputStream = null;
18 FileDefinition fileDefinition = processDefinition.getFileDefinition();
19 if (fileDefinition!=null) {
20 byte[] bytes = fileDefinition.getBytes(name);
21 if (bytes!=null) {
22 inputStream = new ByteArrayInputStream(bytes);
23 }
24 }
25 return inputStream;
26 }
27
28 public Class findClass(String name) throws ClassNotFoundException {
29 Class clazz = null;
30
31 FileDefinition fileDefinition = processDefinition.getFileDefinition();
32 if (fileDefinition!=null) {
33 String fileName = "classes/" + name.replace( '.', '/' ) + ".class";
34 byte[] classBytes = fileDefinition.getBytes(fileName);
35 clazz = defineClass(name, classBytes, 0, classBytes.length);
36 }
37
38 if (clazz==null) {
39 throw new ClassNotFoundException ("class '"+name+"' could not be found by the process classloader");
40 }
41
42 return clazz;
43 }
44 }
45 |
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