Package groovy.lang

Class ExpandoMetaClassCreationHandle

java.lang.Object

groovy.lang.MetaClassRegistry.MetaClassCreationHandle

groovy.lang.ExpandoMetaClassCreationHandle

public class ExpandoMetaClassCreationHandle
extends MetaClassRegistry.MetaClassCreationHandle

A handle for the MetaClassRegistry that changes all classes loaded into the Grails VM to use ExpandoMetaClass instances

The handle should be registered with the Groovy runtime before Groovy loads, for example in your main method. GroovySystem.metaClassRegistry.metaClassCreationHandle = new ExpandoMetaClassCreationHandle()

Since:

1.5

See Also:

• MetaClassRegistry
• MetaClassRegistry.MetaClassCreationHandle
• MetaClassRegistryImpl.setMetaClassCreationHandle(groovy.lang.MetaClassRegistry.MetaClassCreationHandle)

Field Summary

Fields

Modifier and Type	Field	Description
static final ExpandoMetaClassCreationHandle	instance	Shared creation handle instance used when expando meta classes are globally enabled.

Constructor Summary

Constructors

Constructor	Description
ExpandoMetaClassCreationHandle()

Method Summary

Modifier and Type	Method	Description
protected MetaClass	createNormalMetaClass(Class theClass, MetaClassRegistry registry)	Creates the standard meta class implementation for the supplied type.
static void	disable()	Restores the default meta class creation handle for the Groovy runtime.
static void	enable()	Enables the ExpandoMetaClassCreationHandle with the registry ExpandoMetaClassCreationHandle.enable();
boolean	hasModifiedMetaClass(ExpandoMetaClass emc)	Checks whether the supplied expando meta class has been registered as modified.
void	registerModifiedMetaClass(ExpandoMetaClass emc)	Registers a modified ExpandoMetaClass with the creation handle

Methods inherited from class groovy.lang.MetaClassRegistry.MetaClassCreationHandle

create, isDisableCustomMetaClassLookup, setDisableCustomMetaClassLookup

Methods inherited from class java.lang.Object

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

Field Details

instance

public static final ExpandoMetaClassCreationHandle instance

Shared creation handle instance used when expando meta classes are globally enabled.

Constructor Details

ExpandoMetaClassCreationHandle

public ExpandoMetaClassCreationHandle()

Method Details

createNormalMetaClass

protected MetaClass createNormalMetaClass(Class theClass,
 MetaClassRegistry registry)

Creates the standard meta class implementation for the supplied type.

Overrides:

createNormalMetaClass in class MetaClassRegistry.MetaClassCreationHandle

Parameters:

theClass - the class that requires a meta class

registry - the registry creating the meta class

Returns:

the default meta class implementation for the type

registerModifiedMetaClass

public void registerModifiedMetaClass(ExpandoMetaClass emc)

Registers a modified ExpandoMetaClass with the creation handle

Parameters:

emc - The EMC

hasModifiedMetaClass

public boolean hasModifiedMetaClass(ExpandoMetaClass emc)

Checks whether the supplied expando meta class has been registered as modified.

Parameters:

emc - the expando meta class to inspect

Returns:

true if the class info retains a modified expando instance

enable

public static void enable()

Enables the ExpandoMetaClassCreationHandle with the registry ExpandoMetaClassCreationHandle.enable();

disable

public static void disable()

Restores the default meta class creation handle for the Groovy runtime.