org.apache.ignite.osgi.classloaders

Class ContainerSweepClassLoader

java.lang.Object

java.lang.ClassLoader

org.apache.ignite.osgi.classloaders.BundleDelegatingClassLoader

org.apache.ignite.osgi.classloaders.ContainerSweepClassLoader

public class ContainerSweepClassLoader
extends BundleDelegatingClassLoader

A ClassLoader implementation that first attempts to load the class from the associated Bundle. As a fallback, it sweeps the entire OSGi container to find the requested class, returning the first hit.

It keeps a cache of resolved classes and unresolvable classes, in order to optimize subsequent lookups.

Field Summary

Fields inherited from class org.apache.ignite.osgi.classloaders.BundleDelegatingClassLoader

bundle, clsLdr

Constructor Summary

Constructors

Constructor and Description
ContainerSweepClassLoader(org.osgi.framework.Bundle bundle) Constructor with a Bundle only.
ContainerSweepClassLoader(org.osgi.framework.Bundle bundle, ClassLoader classLoader) Constructor with a Bundle and another ClassLoader to check.

Method Summary

Modifier and Type	Method and Description
protected Class<?>	loadClass(String name, boolean resolve) Runs the same logic to find the class as BundleDelegatingClassLoader, but if not found, sweeps the OSGi container to locate the first Bundle that can load the class, and uses it to do so.
protected Class<?>	sweepContainer(String name) Sweeps the OSGi container to find the first Bundle that can load the class.

Methods inherited from class org.apache.ignite.osgi.classloaders.BundleDelegatingClassLoader

classNotFoundException, findClass, findResource, findResources, getBundle, toString

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findLibrary, findLoadedClass, findSystemClass, getClassLoadingLock, getPackage, getPackages, getParent, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, registerAsParallelCapable, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Constructor Detail

ContainerSweepClassLoader

public ContainerSweepClassLoader(org.osgi.framework.Bundle bundle)

Constructor with a Bundle only.

Parameters:

bundle - The bundle.

ContainerSweepClassLoader

public ContainerSweepClassLoader(org.osgi.framework.Bundle bundle,
                                 ClassLoader classLoader)

Constructor with a Bundle and another ClassLoader to check.

Parameters:

bundle - The bundle.

classLoader - The other classloader to check.

Method Detail

loadClass

protected Class<?> loadClass(String name,
                             boolean resolve)
                      throws ClassNotFoundException

Runs the same logic to find the class as BundleDelegatingClassLoader, but if not found, sweeps the OSGi container to locate the first Bundle that can load the class, and uses it to do so.

Overrides:

loadClass in class BundleDelegatingClassLoader

Parameters:

name - The classname.

resolve - Whether to resolve the class or not.

Returns:

The loaded class.

Throws:

ClassNotFoundException

sweepContainer

protected Class<?> sweepContainer(String name)

Sweeps the OSGi container to find the first Bundle that can load the class.

Parameters:

name - The classname.

Returns:

The loaded class.