org.mule.runtime.container.internal

Class ContainerClassLoaderFactory

java.lang.Object

org.mule.runtime.container.internal.ContainerClassLoaderFactory

public class ContainerClassLoaderFactory
extends Object

Creates the classLoader for the Mule container.

This classLoader must be used as the parent classLoader for any other Mule artifact depending only on the container.

Field Summary

Fields

Modifier and Type	Field and Description
static Set<String>	BOOT_PACKAGES Boot packages define all the prefixes that must be loaded from the container classLoader without being filtered
static Set<String>	SYSTEM_PACKAGES System package define all the prefixes that must be loaded only from the container classLoader, but then are filtered depending on what is part of the exposed API.

Constructor Summary

Constructors

Constructor and Description
ContainerClassLoaderFactory() Creates a default factory
ContainerClassLoaderFactory(ModuleRepository moduleRepository) Creates a custom factory

Method Summary

Modifier and Type	Method and Description
protected ArtifactClassLoader	createArtifactClassLoader(ClassLoader parentClassLoader, List<MuleModule> muleModules, ClassLoaderLookupPolicy containerLookupPolicy, ArtifactDescriptor artifactDescriptor) Creates an ArtifactClassLoader that always resolves resources by delegating to the parentClassLoader.
ArtifactClassLoader	createContainerClassLoader(ClassLoader parentClassLoader) Creates the classLoader to represent the Mule container.
protected FilteringArtifactClassLoader	createContainerFilteringClassLoader(List<MuleModule> muleModules, ArtifactClassLoader containerClassLoader) Creates a FilteringArtifactClassLoader to filter the ArtifactClassLoader containerClassLoader given based on List of muleModules.
protected Set<String>	getBootPackages()
protected ClassLoaderLookupPolicy	getContainerClassLoaderLookupPolicy(ClassLoader parentClassLoader, List<MuleModule> muleModules) Creates the container lookup policy to be used by child class loaders.

Methods inherited from class java.lang.Object

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

Field Detail

SYSTEM_PACKAGES

public static final Set<String> SYSTEM_PACKAGES

System package define all the prefixes that must be loaded only from the container classLoader, but then are filtered depending on what is part of the exposed API.

BOOT_PACKAGES

public static final Set<String> BOOT_PACKAGES

Boot packages define all the prefixes that must be loaded from the container classLoader without being filtered

Constructor Detail

ContainerClassLoaderFactory

public ContainerClassLoaderFactory(ModuleRepository moduleRepository)

Creates a custom factory

Parameters:

moduleRepository - provides access to the modules available on the container. Non null.

ContainerClassLoaderFactory

public ContainerClassLoaderFactory()

Creates a default factory

Method Detail

createContainerClassLoader

public ArtifactClassLoader createContainerClassLoader(ClassLoader parentClassLoader)

Creates the classLoader to represent the Mule container.

Parameters:

parentClassLoader - parent classLoader. Can be null.

Returns:

a non null ArtifactClassLoader containing container code that can be used as parent classloader for other mule artifacts.

getContainerClassLoaderLookupPolicy

protected ClassLoaderLookupPolicy getContainerClassLoaderLookupPolicy(ClassLoader parentClassLoader,
                                                                      List<MuleModule> muleModules)

Creates the container lookup policy to be used by child class loaders.

Parameters:

parentClassLoader - classloader used as parent of the container's. Is the classLoader that will load Mule classes.

muleModules - list of modules that would be used to register in the filter based of the class loader.

Returns:

a non null ClassLoaderLookupPolicy that contains the lookup policies for boot, system packages. plus exported packages by the given list of MuleModule.

createArtifactClassLoader

protected ArtifactClassLoader createArtifactClassLoader(ClassLoader parentClassLoader,
                                                        List<MuleModule> muleModules,
                                                        ClassLoaderLookupPolicy containerLookupPolicy,
                                                        ArtifactDescriptor artifactDescriptor)

Creates an ArtifactClassLoader that always resolves resources by delegating to the parentClassLoader.

Parameters:

parentClassLoader - the parent ClassLoader for the container

muleModules - the list of MuleModules to be used for defining the filter

containerLookupPolicy - the ClassLoaderLookupPolicy to be used by the container

artifactDescriptor - descriptor for the artifact owning the created class loader instance.

Returns:

a ArtifactClassLoader to be used in a FilteringContainerClassLoader

createContainerFilteringClassLoader

protected FilteringArtifactClassLoader createContainerFilteringClassLoader(List<MuleModule> muleModules,
                                                                           ArtifactClassLoader containerClassLoader)

Creates a FilteringArtifactClassLoader to filter the ArtifactClassLoader containerClassLoader given based on List of muleModules.

Parameters:

muleModules - the list of MuleModules to be used for defining the filter

containerClassLoader - the ArtifactClassLoader for the container that will be used to delegate by the FilteringContainerClassLoader

Returns:

a FilteringContainerClassLoader that would be the one used as the parent of plugins and applications ArtifactClassLoader

getBootPackages

protected Set<String> getBootPackages()

Returns:

a Set of packages that define all the prefixes that must be loaded from the container classLoader without being filtered