Package groovy.lang
Interface MetaClassRegistry
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- All Known Implementing Classes:
MetaClassRegistryImpl
public interface MetaClassRegistryA MetaClassRegistry is an object that is responsible for managing the a cache of MetaClass instances. Each java.lang.Class instance has an associated MetaClass and client code can query this interface for the MetaClass for a given associated java.lang.Class- See Also:
MetaClass
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Nested Class Summary
Nested Classes Modifier and Type Interface Description static classMetaClassRegistry.MetaClassCreationHandleClass used as base for the creation of MetaClass implementations.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description voidaddMetaClassRegistryChangeEventListener(MetaClassRegistryChangeEventListener listener)Adds a meta class change listener for constant meta classesvoidaddNonRemovableMetaClassRegistryChangeEventListener(MetaClassRegistryChangeEventListener listener)Adds a meta class change listener for constant meta classes.MetaClassgetMetaClass(java.lang.Class theClass)The main function of the registry If a meta class exists then return it otherwise create one, put it in the registry and return itMetaClassRegistry.MetaClassCreationHandlegetMetaClassCreationHandler()Retrieves the MetaClassCreationHandle that is responsible for constructing MetaClass instancesMetaClassRegistryChangeEventListener[]getMetaClassRegistryChangeEventListeners()Returns all registered class change listener for constant meta classes.java.util.Iteratoriterator()Gets a snapshot of the current constant meta classes and returns it as Iterator.voidremoveMetaClass(java.lang.Class theClass)Removes a cached MetaClass from the registryvoidremoveMetaClassRegistryChangeEventListener(MetaClassRegistryChangeEventListener listener)Removes a meta class change listener for constant meta classesvoidsetMetaClass(java.lang.Class theClass, MetaClass theMetaClass)Adds a metaclass to the registry for the given classvoidsetMetaClassCreationHandle(MetaClassRegistry.MetaClassCreationHandle handle)Sets the MetaClassCreationHandle instance that is responsible for constructing instances
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Method Detail
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getMetaClass
MetaClass getMetaClass(java.lang.Class theClass)
The main function of the registry If a meta class exists then return it otherwise create one, put it in the registry and return it
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setMetaClass
void setMetaClass(java.lang.Class theClass, MetaClass theMetaClass)Adds a metaclass to the registry for the given class- Parameters:
theClass- The classtheMetaClass- The MetaClass for theClass
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removeMetaClass
void removeMetaClass(java.lang.Class theClass)
Removes a cached MetaClass from the registry- Parameters:
theClass- The Java class of the MetaClass to remove
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getMetaClassCreationHandler
MetaClassRegistry.MetaClassCreationHandle getMetaClassCreationHandler()
Retrieves the MetaClassCreationHandle that is responsible for constructing MetaClass instances- Returns:
- The MetaClassCreationHandle instance
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setMetaClassCreationHandle
void setMetaClassCreationHandle(MetaClassRegistry.MetaClassCreationHandle handle)
Sets the MetaClassCreationHandle instance that is responsible for constructing instances- Parameters:
handle- The handle instance
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addMetaClassRegistryChangeEventListener
void addMetaClassRegistryChangeEventListener(MetaClassRegistryChangeEventListener listener)
Adds a meta class change listener for constant meta classes- Parameters:
listener- - the update listener
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addNonRemovableMetaClassRegistryChangeEventListener
void addNonRemovableMetaClassRegistryChangeEventListener(MetaClassRegistryChangeEventListener listener)
Adds a meta class change listener for constant meta classes. This listener cannot be removed!- Parameters:
listener- - the update listener
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removeMetaClassRegistryChangeEventListener
void removeMetaClassRegistryChangeEventListener(MetaClassRegistryChangeEventListener listener)
Removes a meta class change listener for constant meta classes- Parameters:
listener- - the update listener
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getMetaClassRegistryChangeEventListeners
MetaClassRegistryChangeEventListener[] getMetaClassRegistryChangeEventListeners()
Returns all registered class change listener for constant meta classes.- Returns:
- an array containing all change listener
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iterator
java.util.Iterator iterator()
Gets a snapshot of the current constant meta classes and returns it as Iterator. Modifications done using this Iterator will not cause a ConcurrentModificationException. If a MetaClass is removed using this Iterator, then the MetaClass will only be removed if the MetaClass was not replaced by another MetaClass in the meantime. If a MetaClass is added while using this Iterator, then it will be part of the Iteration. If a MetaClass replaces another constant meta class, then the Iteration might show two meta classes for the same class.Note: This Iterator may not used with multiple threads.
- Returns:
- Iterator for the constant meta classes
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