Package org.frankframework.configuration

Class ClassLoaderManager

java.lang.Object

org.frankframework.configuration.ClassLoaderManager

public class ClassLoaderManager
extends Object

Loads a ClassLoader on a per Configuration basis. It is possible to specify the ClassLoader type and to make ClassLoaders inherit each other. If no ClassLoader is specified the WebAppClassLoader is used, which will first try to search for resources on the basepath and then the webapp and classpath.

Author:

Niels Meijer

Constructor Summary

Constructors

Constructor	Description
ClassLoaderManager(IbisContext ibisContext)

Method Summary

Modifier and Type	Method	Description
boolean	contains(String currentConfigurationName)
ClassLoader	get(String configurationName)	Returns the ClassLoader for a specific configuration.
ClassLoader	get(String configurationName, String classLoaderType)	Returns the ClassLoader for a specific configuration.
void	reload(ClassLoader classLoader)	Reuse class loader as it is difficult to have all references to the class loader removed (see also http://zeroturnaround.com/rebellabs/rjc201/).
void	reload(String configurationName)	Reloads a configuration if it exists.
void	shutdown()	Removes all created ClassLoaders

Methods inherited from class java.lang.Object

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

Constructor Details

ClassLoaderManager

public ClassLoaderManager(IbisContext ibisContext)

Method Details

get

public ClassLoader get(String configurationName)
                throws ClassLoaderException

Returns the ClassLoader for a specific configuration.

Parameters:

configurationName - to get the ClassLoader for

Returns:

ClassLoader or null on error

Throws:

ClassLoaderException - when a ClassLoader failed to initialize

get

public ClassLoader get(String configurationName,
 String classLoaderType)
                throws ClassLoaderException

Returns the ClassLoader for a specific configuration. Creates the ClassLoader if it doesn't exist yet.

Parameters:

configurationName - to get the ClassLoader for

classLoaderType - null or type of ClassLoader to load

Returns:

ClassLoader or null on error

Throws:

ClassLoaderException - when a ClassLoader failed to initialize

reload

public void reload(String configurationName)
            throws ClassLoaderException

Reloads a configuration if it exists. Does not create a new one! See reload(ClassLoader) for more information

Throws:

ClassLoaderException

reload

public void reload(ClassLoader classLoader)
            throws ClassLoaderException

Reuse class loader as it is difficult to have all references to the class loader removed (see also http://zeroturnaround.com/rebellabs/rjc201/). Create a heapdump after an unload and garbage collect and view the references to the instances of the root class loader class (BasePathClassLoader when a base path is used).

Throws:

ClassLoaderException

contains

public boolean contains(String currentConfigurationName)

shutdown

public void shutdown()

Removes all created ClassLoaders