[jboss-dev-forums] [Design of JBoss jBPM] - Re: jBPM Classloading
The code looks like this:
| public static final String JBPM_CLASSLOADER = "jbpm.classloader";
| public static final String JBPM_CLASSLOADER_CLASSNAME =
"jbpm.classloader.classname";
|
| ...
|
| public static ClassLoader getClassLoader() {
| if (System.getProperty(JBPM_CLASSLOADER).equals("jbpm")) {
| return ClassLoaderUtil.class.getClassLoader();
| } else if (System.getProperty(JBPM_CLASSLOADER).equals("context")) {
| return Thread.currentThread().getContextClassLoader();
| } else if (System.getProperty(JBPM_CLASSLOADER).equals("custom")) {
| try {
| String customClassLoaderClassName =
System.getProperty(JBPM_CLASSLOADER_CLASSNAME);
| if (customClassLoaderClassName == null) {
| throw new JbpmException(
| "'jbpm.classloader' system property set to
'custom' but 'jbpm.classloader.classname' is empty!");
| }
| return (ClassLoader)
Thread.currentThread().getContextClassLoader().loadClass(
| customClassLoaderClassName).newInstance();
| } catch (InstantiationException e) {
| throw new JbpmException("Error instantiating custom classloader
"
| + System.getProperty(JBPM_CLASSLOADER_CLASSNAME), e);
| } catch (IllegalAccessException e) {
| throw new JbpmException("Error accessing custom classloader "
| + System.getProperty(JBPM_CLASSLOADER_CLASSNAME), e);
| } catch (ClassNotFoundException e) {
| throw new JbpmException("Custom classloader "
| + System.getProperty(JBPM_CLASSLOADER_CLASSNAME) + " not
found ", e);
| }
| } else {
| return ClassLoaderUtil.class.getClassLoader();
| }
| }
|
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