NullImplementation (Java API Reference for Oracle® Coherence Community Edition)

java.lang.Object
- java.lang.ClassLoader
- - com.tangosol.util.NullImplementation

```
public class NullImplementation
extends ClassLoader
```
A collection of classes that do nothing. For each class implemented, a factory method will exist following the naming convention "get" plus the class or interface name.

Author:

cp 2000.08.02

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static class`	`NullImplementation.NullActionPolicy` An implementation of an ActionPolicy that allows all actions.
`static class`	`NullImplementation.NullAddressProvider` Null implementation of `AddressProvider`.
`static class`	`NullImplementation.NullBackingMapManagerContext` An implementation of BackingMapManagerContext that does nothing.
`static class`	`NullImplementation.NullCacheStore` An implementation of an CacheStore that does nothing.
`static class`	`NullImplementation.NullCollector<V>` A `Collector` implementation that does nothing.
`static class`	`NullImplementation.NullContinuation<R>` A Continuation that does nothing.
`static class`	`NullImplementation.NullConverter` A Converter that does nothing.
`static class`	`NullImplementation.NullDeltaCompressor` An implementation of a DeltaCompressor that does nothing and always returns the new stream.
`static class`	`NullImplementation.NullEntryProcessor` An implementation of an EntryProcessor that does nothing and returns Boolean.TRUE as a result of execution.
`static class`	`NullImplementation.NullEnumerator` An empty enumerator.
`static class`	`NullImplementation.NullMap` A Map that contains nothing and does nothing.
`static class`	`NullImplementation.NullObservableMap` An immutable ObservableMap which contains nothing.
`static class`	`NullImplementation.NullOutputStream` An OutputStream that does basically nothing.
`static class`	`NullImplementation.NullPartitionAssignmentStrategy` An implementation of `PartitionAssignmentStrategy` that does nothing.
`static class`	`NullImplementation.NullPersistenceEnvironment<R>` A `PersistenceEnvironment` that does nothing.
`static class`	`NullImplementation.NullPersistenceManager<R>` A `PersistenceManager` that does nothing.
`static class`	`NullImplementation.NullPersistentStore<R>` A `PersistentStore` that does as little as possible.
`static class`	`NullImplementation.NullPofContext` An implementation of PofContext that does nothing.
`static class`	`NullImplementation.NullPofHandler` An implementation of PofHandler that does nothing.
`static class`	`NullImplementation.NullReader` A reader that does basically nothing.
`static class`	`NullImplementation.NullResourceRegistry` A `ResourceRegistry` implementation that does nothing.
`static class`	`NullImplementation.NullSet` An immutable set which contains nothing.
`static class`	`NullImplementation.NullValueExtractor` A ValueExtractor that always results in the passed-in value.
`static class`	`NullImplementation.NullWriter` A writer that does basically nothing.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static ActionPolicy`	`getActionPolicy()` Factory method: Obtain a null implementation of an ActionPolicy.
`static AddressProvider`	`getAddressProvider()` Factory method: Obtain a null implementation of an `AddressProvider`.
`static AutoCloseable`	`getAutoCloseable()` Factory method: Obtain a null implementation of an `AutoCloseable`.
`static BackingMapManagerContext`	`getBackingMapManagerContext()` Factory method: Obtain a null implementation of a BackingMapManagerContext.
`static CacheStore`	`getCacheStore()` Factory method: Obtain a null implementation of a CacheStore.
`static ClassLoader`	`getClassLoader()` Factory method: Obtain a null implementation of a ClassLoader.
`static <V> com.oracle.coherence.common.base.Collector<V>`	`getCollector()` Factory method: Obtain a null implementation of a `Collector`.
`static <R> com.oracle.coherence.common.base.Continuation<R>`	`getContinuation()` Factory method: Obtain a null implementation of a `Continuation`.
`static <T,R> Converter<T,R>`	`getConverter()` Factory method: Obtain a null implementation of a Converter.
`static DataOutput`	`getDataOutput()` Factory method: Obtain a null implementation of a DataOutput.
`static DeltaCompressor`	`getDeltaCompressor()` Factory method: Obtain a null implementation of a DeltaCompressor.
`static InvocableMap.EntryProcessor`	`getEntryProcessor()` Factory method: Obtain a null implementation of an EntryProcessor.
`static Enumeration`	`getEnumeration()` Returns an instance of the null enumerator.
`static <T> Iterable<T>`	`getIterable()` Returns an instance of the null iterable.
`static <T> Iterator<T>`	`getIterator()` Returns an instance of the null iterator.
`static <K,V> Map<K,V>`	`getMap()` Returns an instance of the NullMap.
`static ObservableMap`	`getObservableMap()` Returns an instance of the NullObservableMap.
`static OutputStream`	`getOutputStream()` Factory method: Obtain a null implementation of a OutputStream.
`static PartitionAssignmentStrategy`	`getPartitionAssignmentStrategy()` Factory method: Obtain a null implementation of a PartitionAssignmentStrategy.
`static <R> com.oracle.coherence.persistence.PersistenceEnvironment<R>`	`getPersistenceEnvironment()` Factory method: Obtain a null implementation of a `PersistenceEnvironment`.
`static <R> com.oracle.coherence.persistence.PersistenceEnvironment<R>`	`getPersistenceEnvironment(Class<R> clz)` Factory method: Obtain a null implementation of a `PersistenceEnvironment`.
`static <R> com.oracle.coherence.persistence.PersistenceManager<R>`	`getPersistenceManager()` Factory method: Obtain a null implementation of a `PersistenceManager`.
`static <R> com.oracle.coherence.persistence.PersistenceManager<R>`	`getPersistenceManager(Class<R> clz)` Factory method: Obtain a null implementation of a `PersistenceManager`.
`static <R> com.oracle.coherence.persistence.PersistentStore<R>`	`getPersistentStore()` Factory method: Obtain a null implementation of a `PersistentStore`.
`static <R> com.oracle.coherence.persistence.PersistentStore<R>`	`getPersistentStore(Class<R> clz)` Factory method: Obtain a null implementation of a `PersistentStore`.
`static PofContext`	`getPofContext()` Factory method: Obtain a null implementation of a PofContext.
`static PofHandler`	`getPofHandler()` Factory method: Obtain a null implementation of a PofHandler.
`static Reader`	`getReader()` Factory method: Obtain a null implementation of a Reader.
`static ResourceRegistry`	`getResourceRegistry()` Factory method: Obtain a null implementation of a `ResourceRegistry`.
`static <T> Set<T>`	`getSet()` Returns an instance of the NullSet.
`static <T,E> ValueExtractor<T,E>`	`getValueExtractor()` Factory method: Obtain a null implementation of a ValueExtractor.
`static Writer`	`getWriter()` Factory method: Obtain a null implementation of a Writer.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getEnumeration
```
public static Enumeration getEnumeration()
```
    Returns an instance of the null enumerator.
    
    Returns:
    
    an Enumeration instance with no values to enumerate.
  - getIterator
```
public static <T> Iterator<T> getIterator()
```
    Returns an instance of the null iterator.
    
    Returns:
    
    an Iterator instance with no values to enumerate.
  - getIterable
```
public static <T> Iterable<T> getIterable()
```
    Returns an instance of the null iterable.
    
    Returns:
    
    an Iterable that will return a null iterator
  - getSet
```
public static <T> Set<T> getSet()
```
    Returns an instance of the NullSet.
    
    Returns:
    
    an empty immutable Set
  - getMap
```
public static <K,V> Map<K,V> getMap()
```
    Returns an instance of the NullMap.
    
    Returns:
    
    an empty Map that does nothing
  - getObservableMap
```
public static ObservableMap getObservableMap()
```
    Returns an instance of the NullObservableMap.
    
    Returns:
    
    an empty ObservableMap and does nothing
  - getReader
```
public static Reader getReader()
```
    Factory method: Obtain a null implementation of a Reader.
    
    Returns:
    
    a conforming implementation of Reader that does as little as possible
  - getWriter
```
public static Writer getWriter()
```
    Factory method: Obtain a null implementation of a Writer.
    
    Returns:
    
    a conforming implementation of Writer that does as little as possible
  - getOutputStream
```
public static OutputStream getOutputStream()
```
    Factory method: Obtain a null implementation of a OutputStream.
    
    Returns:
    
    a conforming implementation of OutputStream that does as little as possible
  - getDataOutput
```
public static DataOutput getDataOutput()
```
    Factory method: Obtain a null implementation of a DataOutput.
    
    Returns:
    
    a conforming implementation of DataOutput that does as little as possible
  - getConverter
```
public static <T,R> Converter<T,R> getConverter()
```
    Factory method: Obtain a null implementation of a Converter.
    
    Returns:
    
    a conforming implementation of Converter that does as little as possible
  - getValueExtractor
```
public static <T,E> ValueExtractor<T,E> getValueExtractor()
```
    Factory method: Obtain a null implementation of a ValueExtractor.
    
    Returns:
    
    a ValueExtractor that does not actually extract anything from the passed value
  - getClassLoader
```
public static ClassLoader getClassLoader()
```
    Factory method: Obtain a null implementation of a ClassLoader.
    
    Returns:
    
    a conforming implementation of ClassLoader that does as little as possible
  - getPofContext
```
public static PofContext getPofContext()
```
    Factory method: Obtain a null implementation of a PofContext.
    
    Returns:
    
    a conforming implementation of PofContext that does as little as possible
  - getPofHandler
```
public static PofHandler getPofHandler()
```
    Factory method: Obtain a null implementation of a PofHandler.
    
    Returns:
    
    a conforming implementation of PofHandler that does as little as possible
  - getBackingMapManagerContext
```
public static BackingMapManagerContext getBackingMapManagerContext()
```
    Factory method: Obtain a null implementation of a BackingMapManagerContext.
    
    Returns:
    
    a conforming implementation of BackingMapManagerContext that does as little as possible
  - getEntryProcessor
```
public static InvocableMap.EntryProcessor getEntryProcessor()
```
    Factory method: Obtain a null implementation of an EntryProcessor.
    
    Returns:
    
    an EntryProcessor implementation that returns Boolean.FALSE
  - getDeltaCompressor
```
public static DeltaCompressor getDeltaCompressor()
```
    Factory method: Obtain a null implementation of a DeltaCompressor.
    
    Returns:
    
    a DeltaCompressor implementation that always returns new buffer
  - getActionPolicy
```
public static ActionPolicy getActionPolicy()
```
    Factory method: Obtain a null implementation of an ActionPolicy.
    
    Returns:
    
    an ActionPolicy implementation that allows all actions
  - getCacheStore
```
public static CacheStore getCacheStore()
```
    Factory method: Obtain a null implementation of a CacheStore.
    
    Returns:
    
    a CacheStore implementation that does as little as possible
  - getPartitionAssignmentStrategy
```
public static PartitionAssignmentStrategy getPartitionAssignmentStrategy()
```
    Factory method: Obtain a null implementation of a PartitionAssignmentStrategy.
    
    Returns:
    
    a PartitionAssignmentStrategy implementation that does as little as possible
  - getAddressProvider
```
public static AddressProvider getAddressProvider()
```
    Factory method: Obtain a null implementation of an AddressProvider.
    
    Returns:
    
    an implementation of AddressProvider that does as little as possible
  - getCollector
```
public static <V> com.oracle.coherence.common.base.Collector<V> getCollector()
```
    Factory method: Obtain a null implementation of a Collector.
    
    Returns:
    
    an implementation of Collector that does as little as possible
  - getContinuation
```
public static <R> com.oracle.coherence.common.base.Continuation<R> getContinuation()
```
    Factory method: Obtain a null implementation of a Continuation.
    
    Returns:
    
    an implementation of Continuation that does nothing
  - getPersistenceEnvironment
```
public static <R> com.oracle.coherence.persistence.PersistenceEnvironment<R> getPersistenceEnvironment()
```
    Factory method: Obtain a null implementation of a PersistenceEnvironment.
    
    Returns:
    
    an implementation of PersistenceEnvironment that does as little as possible
  - getPersistenceEnvironment
```
public static <R> com.oracle.coherence.persistence.PersistenceEnvironment<R> getPersistenceEnvironment(Class<R> clz)
```
    Factory method: Obtain a null implementation of a PersistenceEnvironment.
    
    Parameters:
    
    clz - the type of a raw, environment specific object representation
    
    Returns:
    
    an implementation of PersistenceEnvironment that does as little as possible
  - getPersistenceManager
```
public static <R> com.oracle.coherence.persistence.PersistenceManager<R> getPersistenceManager()
```
    Factory method: Obtain a null implementation of a PersistenceManager.
    
    Returns:
    
    an implementation of PersistenceManager that does as little as possible
  - getPersistenceManager
```
public static <R> com.oracle.coherence.persistence.PersistenceManager<R> getPersistenceManager(Class<R> clz)
```
    Factory method: Obtain a null implementation of a PersistenceManager.
    
    Parameters:
    
    clz - the type of a raw, environment specific object representation
    
    Returns:
    
    an implementation of PersistenceManager that does as little as possible
  - getPersistentStore
```
public static <R> com.oracle.coherence.persistence.PersistentStore<R> getPersistentStore()
```
    Factory method: Obtain a null implementation of a PersistentStore.
    
    Returns:
    
    an implementation of PersistentStore that does as little as possible
  - getPersistentStore
```
public static <R> com.oracle.coherence.persistence.PersistentStore<R> getPersistentStore(Class<R> clz)
```
    Factory method: Obtain a null implementation of a PersistentStore.
    
    Parameters:
    
    clz - the type of a raw, environment specific object representation
    
    Returns:
    
    an implementation of PersistentStore that does as little as possible
  - getResourceRegistry
```
public static ResourceRegistry getResourceRegistry()
```
    Factory method: Obtain a null implementation of a ResourceRegistry.
    
    Returns:
    
    an implementation of ResourceRegistry that does nothing
  - getAutoCloseable
```
public static AutoCloseable getAutoCloseable()
```
    Factory method: Obtain a null implementation of an AutoCloseable.
    
    Returns:
    
    an implementation of an AutoCloseable that does nothing

Class NullImplementation

Nested Class Summary

Method Summary

Methods inherited from class java.lang.ClassLoader

Methods inherited from class java.lang.Object

Method Detail

getEnumeration

getIterator

getIterable

getSet

getMap

getObservableMap

getReader

getWriter

getOutputStream

getDataOutput

getConverter

getValueExtractor

getClassLoader

getPofContext

getPofHandler

getBackingMapManagerContext

getEntryProcessor

getDeltaCompressor

getActionPolicy

getCacheStore

getPartitionAssignmentStrategy

getAddressProvider

getCollector

getContinuation

getPersistenceEnvironment

getPersistenceEnvironment

getPersistenceManager

getPersistenceManager

getPersistentStore

getPersistentStore

getResourceRegistry

getAutoCloseable