net.sf.taverna.raven.repository
Class AggregatingClassLoader

java.lang.Object
  java.lang.ClassLoader
      net.sf.taverna.raven.repository.AggregatingClassLoader

public class AggregatingClassLoader
extends java.lang.ClassLoader

ClassLoader implementation as a convenience to allow searching of multiple artifact based classloaders. This can be used for cases such as the Beanshell where only a single ClassLoader can be specified, should such cases require classes from multiple independant artifacts this class can aggregate a set of classloaders, delegating to each in turn until an appropriate match is found for a class or resource.

Author:

Tom Oinn

Constructor Summary

AggregatingClassLoader(Repository rep, java.util.List<Artifact> artifacts)

AggregatingClassLoader(Repository rep, java.util.List<Artifact> artifacts, java.lang.ClassLoader parent)

Method Summary

java.net.URL	findResource(java.lang.String name)
java.util.Enumeration<java.net.URL>	findResources(java.lang.String name)

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, getParent, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AggregatingClassLoader

public AggregatingClassLoader(Repository rep,
                              java.util.List<Artifact> artifacts)
                       throws ArtifactStateException,
                              ArtifactNotFoundException

Throws:

ArtifactStateException

ArtifactNotFoundException

AggregatingClassLoader

public AggregatingClassLoader(Repository rep,
                              java.util.List<Artifact> artifacts,
                              java.lang.ClassLoader parent)
                       throws ArtifactStateException,
                              ArtifactNotFoundException

Throws:

ArtifactStateException

ArtifactNotFoundException

Method Detail

findResource

public java.net.URL findResource(java.lang.String name)

Overrides:

findResource in class java.lang.ClassLoader

findResources

public java.util.Enumeration<java.net.URL> findResources(java.lang.String name)
                                                  throws java.io.IOException

Overrides:

findResources in class java.lang.ClassLoader

Throws:

java.io.IOException