Package nl.tue.storage.impl

Class CompressedStoreHashSetImpl<K>

java.lang.Object

nl.tue.storage.impl.CompressedStoreHashSetImpl<K>

All Implemented Interfaces:

CompressedHashSet<K>

Direct Known Subclasses:

CompressedStoreHashSetImpl.Int32G, CompressedStoreHashSetImpl.Int4G, CompressedStoreHashSetImpl.Int8G, CompressedStoreHashSetImpl.IntCustomAlignment, CompressedStoreHashSetImpl.Long

public abstract class CompressedStoreHashSetImpl<K>
extends java.lang.Object
implements CompressedHashSet<K>

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CompressedStoreHashSetImpl.Int32G<K>
static class	CompressedStoreHashSetImpl.Int4G<K>
static class	CompressedStoreHashSetImpl.Int8G<K>
static class	CompressedStoreHashSetImpl.IntCustomAlignment<K>
static class	CompressedStoreHashSetImpl.Long<K>
static class	CompressedStoreHashSetImpl.Result<K>

Constructor Summary

Constructors

Constructor	Description
CompressedStoreHashSetImpl(nl.tue.storage.impl.AbstractBackedHashSet<K> backingSet)

Method Summary

Modifier and Type	Method	Description
CompressedStoreHashSetImpl.Result<K>	add(K val)	Returns the index of the given object in the backing store.
long	contains(K val)	The contains method is not synchronized.
CompressedStore<K>	getBackingStore()	Returns the CompressedStore used by this Set.
long	getMemory()	returns the memory use of the backing store plus the size of the backingSet.
K	getObject(long l)	Return the original object stored at index l in the backing storage.
void	removeAll()	clears the storage space and removes all elements in the backing set.
int	size()	return the number of objects stored in this set

Methods inherited from class java.lang.Object

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

Constructor Detail

CompressedStoreHashSetImpl

public CompressedStoreHashSetImpl(nl.tue.storage.impl.AbstractBackedHashSet<K> backingSet)

Method Detail

add

public CompressedStoreHashSetImpl.Result<K> add(K val)
                                         throws StorageException

Description copied from interface: CompressedHashSet

Returns the index of the given object in the backing store. If the object existed before the call to add, a negative index is returned, otherwise a positive index is returned.

Specified by:

add in interface CompressedHashSet<K>

Returns:

Throws:

StorageException

contains

public long contains(K val)
              throws StorageException

The contains method is not synchronized. It may therefore produce false negatives, i.e. it may say that an object is not in the storage, while the object is already scheduled for storage. Therefore, any calls to contains that require a true answer should synchronize on this object.

Specified by:

contains in interface CompressedHashSet<K>

Returns:

Throws:

StorageException

getMemory

public long getMemory()

Description copied from interface: CompressedHashSet

returns the memory use of the backing store plus the size of the backingSet.

Specified by:

getMemory in interface CompressedHashSet<K>

Returns:

getObject

public K getObject(long l)
            throws StorageException

Description copied from interface: CompressedHashSet

Return the original object stored at index l in the backing storage.

Specified by:

getObject in interface CompressedHashSet<K>

Returns:

Throws:

StorageException

getBackingStore

public CompressedStore<K> getBackingStore()

Description copied from interface: CompressedHashSet

Returns the CompressedStore used by this Set.

Specified by:

getBackingStore in interface CompressedHashSet<K>

Returns:

size

public int size()

Description copied from interface: CompressedHashSet

return the number of objects stored in this set

Specified by:

size in interface CompressedHashSet<K>

Returns:

removeAll

public void removeAll()

clears the storage space and removes all elements in the backing set.

Specified by:

removeAll in interface CompressedHashSet<K>