sun.module.core
Class ModuleSystemImpl

java.lang.Object
  java.module.ModuleSystem
      sun.module.core.ModuleSystemImpl

public final class ModuleSystemImpl
extends ModuleSystem

Module system implementation.

Since:

1.7

Author:

Andreas Sterbenz

Field Summary

static ModuleSystem

INSTANCE

Method Summary

void	disableModuleDefinition(ModuleDefinition definition) Disables the specified ModuleDefinition in the ModuleSystem.
Module	getModule(ModuleDefinition definition) Returns a Module instance for the specified ModuleDefinition in the ModuleSystem.
void	releaseModule(ModuleDefinition definition) Releases an existing Module instance corresponding to the specified ModuleDefinition in the ModuleSystem.

Methods inherited from class java.module.ModuleSystem

getDefault

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final ModuleSystem INSTANCE

Method Detail

releaseModule

public void releaseModule(ModuleDefinition definition)

Description copied from class: ModuleSystem

Releases an existing Module instance corresponding to the specified ModuleDefinition in the ModuleSystem.

If there is an existing module instance for the specified module definition, it will never be returned by the ModuleSystem after this method returns. Further, if that module instance is imported by other module instances, each of these importing module instance will also be released.

If there is no module instance corresponding to the module definition, calling this method has no effect.

Module instances corresponding to the ModuleDefinition with name that begins with "java.", or from the bootstrap repository cannot be released.

If a security manager is present, this method calls the security manager's checkPermission method with a ModuleSystemPermission("releaseModule") permission to ensure it's ok to release the existing module instance of the specified module definition.

Specified by:

releaseModule in class ModuleSystem

Parameters:

definition - a ModuleDefinition.

disableModuleDefinition

public void disableModuleDefinition(ModuleDefinition definition)

Description copied from class: ModuleSystem

Disables the specified ModuleDefinition in the ModuleSystem.

The ModuleDefinition is released and marked to disallow creation of new Module instances. Subsequent calls to getModule with this ModuleDefinition throw an IllegalStateException.

ModuleDefinition with name that begins with "java.", or from the bootstrap repository cannot be disabled.

If a security manager is present, this method calls the security manager's checkPermission method with a ModuleSystemPermission("disableModuleDefinition") permission to ensure it's ok to disable the specified module definition in the module system.

Specified by:

disableModuleDefinition in class ModuleSystem

Parameters:

definition - a ModuleDefinition.

getModule

public Module getModule(ModuleDefinition definition)
                 throws ModuleInitializationException

Description copied from class: ModuleSystem

Returns a Module instance for the specified ModuleDefinition in the ModuleSystem. The module is initialized and ready to use.

If there is an existing module instance for the specified ModuleDefinition, that instance is returned. Otherwise, a new module instance is instantiated and returned.

Specified by:

getModule in class ModuleSystem

Parameters:

definition - a ModuleDefinition

Returns:

a Module instance of the ModuleDefinition.

Throws:

ModuleInitializationException - if the module instance cannot be initialized.