Package repast.simphony.plugin

Class ExtendablePluginClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.java.plugin.PluginClassLoader

org.java.plugin.standard.StandardPluginClassLoader

repast.simphony.plugin.ExtendablePluginClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class ExtendablePluginClassLoader
extends org.java.plugin.standard.StandardPluginClassLoader

Repast plugin ClassLoader implementation.

Author:

Nick Collier

Nested Class Summary

Nested classes/interfaces inherited from class org.java.plugin.standard.StandardPluginClassLoader

org.java.plugin.standard.StandardPluginClassLoader.PluginResourceLoader, org.java.plugin.standard.StandardPluginClassLoader.ResourceFilter

Field Summary

Fields inherited from class org.java.plugin.standard.StandardPluginClassLoader

libraryCache, privateImports, probeParentLoaderLast, publicImports, resourceFilters, resourceLoader, reverseLookups

Constructor Summary

Constructors

Constructor	Description
ExtendablePluginClassLoader(org.java.plugin.PluginManager aManager, org.java.plugin.registry.PluginDescriptor descr, ClassLoader parent)

Method Summary

Modifier and Type	Method	Description
void	addDescriptor(org.java.plugin.registry.PluginDescriptor descriptor)
void	appendPaths(String paths)
protected void	collectFilters()
protected void	collectImports()
protected Package	definePackage(String name, String specTitle, String specVersion, String specVendor, String implTitle, String implVersion, String implVendor, URL sealBase)	Override java.langClassLoader package definition method to prevent null values in java.lang.Package attributes.

Methods inherited from class org.java.plugin.standard.StandardPluginClassLoader

cacheLibrary, checkClassVisibility, dispose, findLibrary, findResource, findResource, findResources, findResources, getUrls, isResourceVisible, loadClass, loadClass, pluginsSetChanged, setProbeParentLoaderLast

Methods inherited from class org.java.plugin.PluginClassLoader

getPluginDescriptor, getPluginManager, toString

Methods inherited from class java.net.URLClassLoader

addURL, close, definePackage, findClass, getPermissions, getResourceAsStream, getURLs, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass, defineClass

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, findClass, findLoadedClass, findResource, findSystemClass, getClassLoadingLock, getDefinedPackage, getDefinedPackages, getName, getPackage, getPackages, getParent, getPlatformClassLoader, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, loadClass, registerAsParallelCapable, resolveClass, resources, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

ExtendablePluginClassLoader

public ExtendablePluginClassLoader(org.java.plugin.PluginManager aManager,
 org.java.plugin.registry.PluginDescriptor descr,
 ClassLoader parent)

Method Details

definePackage

protected Package definePackage(String name,
 String specTitle,
 String specVersion,
 String specVendor,
 String implTitle,
 String implVersion,
 String implVendor,
 URL sealBase)
                         throws IllegalArgumentException

Override java.langClassLoader package definition method to prevent null values in java.lang.Package attributes. The JPF classloader does not process the META-INF/MANIFEST.MF files inside Jars that contain metadata about the library. Null values can cause some libraries such as JAI to fail since they require non-null, but arbitrary, meta-data to instantiate properly.

Overrides:

definePackage in class ClassLoader

Throws:

IllegalArgumentException

See Also:

• java.lang.ClassLoader#defindPackage

addDescriptor

public void addDescriptor(org.java.plugin.registry.PluginDescriptor descriptor)

collectFilters

protected void collectFilters()

Overrides:

collectFilters in class org.java.plugin.standard.StandardPluginClassLoader

appendPaths

public void appendPaths(String paths)
                 throws IOException

Throws:

IOException

collectImports

protected void collectImports()

Overrides:

collectImports in class org.java.plugin.standard.StandardPluginClassLoader