org.glassfish.grizzly
Class AbstractTransformer<K,L>

java.lang.Object
  org.glassfish.grizzly.AbstractTransformer<K,L>

All Implemented Interfaces:

Transformer<K,L>

Direct Known Subclasses:

ChunkingFilter.ChunkingTransformer, GZipDecoder, GZipEncoder, LZMADecoder, LZMAEncoder, SSLDecoderTransformer, SSLEncoderTransformer, StringDecoder, StringEncoder

public abstract class AbstractTransformer<K,L>
extends Object
implements Transformer<K,L>

Author:

Alexey Stashok

Nested Class Summary

static class

AbstractTransformer.LastResultAwareState<K,L>

Field Summary

protected AttributeBuilder	attributeBuilder
protected Attribute<AbstractTransformer.LastResultAwareState<K,L>>	stateAttr

Constructor Summary

AbstractTransformer()

Method Summary

protected AbstractTransformer.LastResultAwareState<K,L>	createStateObject()
TransformationResult<K,L>	getLastResult(AttributeStorage storage) Gets the last returned Transformer result.
MemoryManager	getMemoryManager()
protected String	getNamePrefix()
static <T> T	getValue(AttributeStorage storage, Attribute<T> attribute, T defaultValue)
protected MemoryManager	obtainMemoryManager(AttributeStorage storage)
protected AbstractTransformer.LastResultAwareState<K,L>	obtainStateObject(AttributeStorage storage)
void	release(AttributeStorage storage) The Transformer has done its work and can release all associated resource.
protected TransformationResult<K,L>	saveLastResult(AttributeStorage storage, TransformationResult<K,L> result)
void	setMemoryManager(MemoryManager memoryManager)
TransformationResult<K,L>	transform(AttributeStorage storage, K input) Transforms an input data to some custom representation.
protected abstract TransformationResult<K,L>	transformImpl(AttributeStorage storage, K input)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.glassfish.grizzly.Transformer

getName, hasInputRemaining

Field Detail

attributeBuilder

protected final AttributeBuilder attributeBuilder

stateAttr

protected final Attribute<AbstractTransformer.LastResultAwareState<K,L>> stateAttr

Constructor Detail

AbstractTransformer

public AbstractTransformer()

Method Detail

getNamePrefix

protected String getNamePrefix()

transform

public final TransformationResult<K,L> transform(AttributeStorage storage,
                                                 K input)
                                          throws TransformationException

Description copied from interface: Transformer

Transforms an input data to some custom representation. Input and output are not passed implicitly, which means that Transformer is able to retrieve input and output from its internal state or from external storage (AttributeStorage).

Specified by:

transform in interface Transformer<K,L>

Parameters:

storage - the external state storage, where Transformer could get/put a state.

Returns:

the result TransformationResult

Throws:

TransformationException

transformImpl

protected abstract TransformationResult<K,L> transformImpl(AttributeStorage storage,
                                                           K input)
                                                    throws TransformationException

Throws:

TransformationException

getLastResult

public final TransformationResult<K,L> getLastResult(AttributeStorage storage)

Description copied from interface: Transformer

Gets the last returned Transformer result. Last result could be either retrieved from internal state, or external storage, which is passed as the parameter.

Specified by:

getLastResult in interface Transformer<K,L>

Parameters:

storage - the external state storage, where Transformer could retrieve or store its state.

Returns:

the last returned Transformer result.

saveLastResult

protected final TransformationResult<K,L> saveLastResult(AttributeStorage storage,
                                                         TransformationResult<K,L> result)

release

public void release(AttributeStorage storage)

Description copied from interface: Transformer

The Transformer has done its work and can release all associated resource.

Specified by:

release in interface Transformer<K,L>

Parameters:

storage - the external state storage, where Transformer could retrieve or store its state.

obtainMemoryManager

protected MemoryManager obtainMemoryManager(AttributeStorage storage)

getMemoryManager

public MemoryManager getMemoryManager()

setMemoryManager

public void setMemoryManager(MemoryManager memoryManager)

getValue

public static <T> T getValue(AttributeStorage storage,
                             Attribute<T> attribute,
                             T defaultValue)

obtainStateObject

protected final AbstractTransformer.LastResultAwareState<K,L> obtainStateObject(AttributeStorage storage)

createStateObject

protected AbstractTransformer.LastResultAwareState<K,L> createStateObject()