org.objectweb.medor.eval.prefetch.lib
Class PrefetchCacheImpl

java.lang.Object
  org.objectweb.medor.eval.prefetch.lib.PrefetchCacheImpl

All Implemented Interfaces:

PrefetchCache

public class PrefetchCacheImpl

extends java.lang.Object

implements PrefetchCache

Author:

P. Dechamboux

Constructor Summary

PrefetchCacheImpl()

PrefetchCacheImpl(Logger logger)

Method Summary

PrefetchBuffer	createPrefetchBuffer(PrefetchBufferFactory pbf, java.lang.Object cat, java.lang.Object ctxt, int indexpos, boolean register) Allocates a prefetched buffer for the object category and the connection context in order to register prefetched tuples.
PrefetchBuffer	createPrefetchBuffer(PrefetchBufferFactory pbf, java.lang.Object cat, java.lang.Object ctxt, int indexpos, boolean multithread, boolean register) Allocates a prefetched buffer for the object category and the connection context in order to register prefetched tuples.
Logger	getLogger()
Tuple	getPrefetchTuple(java.lang.Object index, java.lang.Object cat, java.lang.Object ctxt) Retrieves the prefetched tuple from this cache associated with this index information, within the given caching context.
TupleCollection	getPrefetchTupleCollection(java.lang.Object index, java.lang.Object cat, java.lang.Object ctxt) Same as getPrefetchTuple, except it returns the TupleCollection.
void	invalidatePrefetchBuffer(java.lang.Object ctxt) Invalidates all the prefetched tuples that are associated with the given caching connection context.
static java.lang.String	printTuple(Tuple t)
boolean	registerPrefetchBuffer(PrefetchBuffer pb, java.lang.Object cat, java.lang.Object ctxt) Register the prefetched buffer pb for the object category and the connection context in order to register prefetched tuples.
void	setLogger(Logger logger)

Methods inherited from class java.lang.Object

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

Constructor Detail

PrefetchCacheImpl

public PrefetchCacheImpl()

PrefetchCacheImpl

public PrefetchCacheImpl(Logger logger)

Method Detail

getLogger

public Logger getLogger()

setLogger

public void setLogger(Logger logger)

getPrefetchTuple

public Tuple getPrefetchTuple(java.lang.Object index,
                              java.lang.Object cat,
                              java.lang.Object ctxt)
                       throws MedorException

Description copied from interface: PrefetchCache

Retrieves the prefetched tuple from this cache associated with this index information, within the given caching context. The prefetched tuple also belongs to the given object category.

Specified by:

getPrefetchTuple in interface PrefetchCache

Parameters:

index - The index that allows the yielded prefetched data item to be identified into the cache.

cat - The category (e.g., class) to which the objects, that can be built using the prefetched data, belong to.

ctxt - The caching context within which the data has been prefetched.

Returns:

The prefetched tuple.

Throws:

MedorException

getPrefetchTupleCollection

public TupleCollection getPrefetchTupleCollection(java.lang.Object index,
                                                  java.lang.Object cat,
                                                  java.lang.Object ctxt)
                                           throws MedorException

Description copied from interface: PrefetchCache

Same as getPrefetchTuple, except it returns the TupleCollection.

Specified by:

getPrefetchTupleCollection in interface PrefetchCache

Throws:

MedorException

invalidatePrefetchBuffer

public void invalidatePrefetchBuffer(java.lang.Object ctxt)

Description copied from interface: PrefetchCache

Invalidates all the prefetched tuples that are associated with the given caching connection context.

Specified by:

invalidatePrefetchBuffer in interface PrefetchCache

Parameters:

ctxt - The invalid caching context.

createPrefetchBuffer

public PrefetchBuffer createPrefetchBuffer(PrefetchBufferFactory pbf,
                                           java.lang.Object cat,
                                           java.lang.Object ctxt,
                                           int indexpos,
                                           boolean register)
                                    throws MedorException

Description copied from interface: PrefetchCache

Allocates a prefetched buffer for the object category and the connection context in order to register prefetched tuples.

Specified by:

createPrefetchBuffer in interface PrefetchCache

Parameters:

pbf - The factory for creating actual PrefetchBuffer

cat - The associated object category.

ctxt - The associated caching context.

indexpos - The position of the index field within the prefetched tuples.

register - if true, call the register method

Returns:

The allocated PrefetchBuffer.

Throws:

MedorException

createPrefetchBuffer

public PrefetchBuffer createPrefetchBuffer(PrefetchBufferFactory pbf,
                                           java.lang.Object cat,
                                           java.lang.Object ctxt,
                                           int indexpos,
                                           boolean multithread,
                                           boolean register)
                                    throws MedorException

Description copied from interface: PrefetchCache

Allocates a prefetched buffer for the object category and the connection context in order to register prefetched tuples.

Specified by:

createPrefetchBuffer in interface PrefetchCache

Parameters:

pbf - The factory for creating actual PrefetchBuffer

cat - The associated object category.

ctxt - The associated caching context.

indexpos - The position of the index field within the prefetched

multithread - indicates if the context is used by several threads

register - if true, call the register method

Returns:

The allocated PrefetchBuffer.

Throws:

MedorException

registerPrefetchBuffer

public boolean registerPrefetchBuffer(PrefetchBuffer pb,
                                      java.lang.Object cat,
                                      java.lang.Object ctxt)
                               throws MedorException

Description copied from interface: PrefetchCache

Register the prefetched buffer pb for the object category and the connection context in order to register prefetched tuples.

Specified by:

registerPrefetchBuffer in interface PrefetchCache

Parameters:

cat - The associated object category.

ctxt - The associated caching context.

Returns:

true if the registration is done, false else

Throws:

MedorException

printTuple

public static java.lang.String printTuple(Tuple t)