Package org.apache.uima.internal.util

Class CopyOnWriteObjHashSet<T extends FeatureStructure>

java.lang.Object

org.apache.uima.internal.util.CopyOnWriteObjHashSet<T>

All Implemented Interfaces:

CopyOnWriteIndexPart<T>

public class CopyOnWriteObjHashSet<T extends FeatureStructure>
extends java.lang.Object
implements CopyOnWriteIndexPart<T>

implements ObjHashSet partially, for iterator use

Field Summary

Fields

Modifier and Type	Field	Description
private ObjHashSet<T>	ohs
private ObjHashSet<T>	original
private int	original_size

Constructor Summary

Constructors

Constructor	Description
CopyOnWriteObjHashSet(ObjHashSet<T> original)

Method Summary

Modifier and Type	Method	Description
int	copyToArray(T[] target, int startingIndexInTarget)	Copy FS refs to target from this index part
int	find(T obj)
T	get(int index)	For iterator use
int	getCapacity()
boolean	isOriginal()
java.util.Iterator<T>	iterator()
void	makeReadOnlyCopy()	Called by index when about to make an update
int	moveTo(FeatureStructure fs)	if the fs is in the set, the iterator should return it.
int	moveToNextFilled(int pos)	advance pos until it points to a non 0 or is 1 past end
int	moveToPreviousFilled(int pos)	decrement pos until it points to a non 0 or is -1
int	size()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

ohs

private ObjHashSet<T extends FeatureStructure> ohs

original

private ObjHashSet<T extends FeatureStructure> original

original_size

private final int original_size

Constructor Detail

CopyOnWriteObjHashSet

public CopyOnWriteObjHashSet(ObjHashSet<T> original)

Method Detail

makeReadOnlyCopy

public void makeReadOnlyCopy()

Called by index when about to make an update

Specified by:

makeReadOnlyCopy in interface CopyOnWriteIndexPart<T extends FeatureStructure>

find

public int find(T obj)

Parameters:

obj - the object to find in the table (if it is there)

Returns:

the position of obj in the table, or -1 if not in the table

get

public T get(int index)

For iterator use

Parameters:

index - a magic number returned by the internal find

Returns:

the T at that spot, or null if nothing there

moveToNextFilled

public int moveToNextFilled(int pos)

advance pos until it points to a non 0 or is 1 past end

Parameters:

pos - -

Returns:

updated pos

moveToPreviousFilled

public int moveToPreviousFilled(int pos)

decrement pos until it points to a non 0 or is -1

Parameters:

pos - -

Returns:

updated pos

iterator

public java.util.Iterator<T> iterator()

Specified by:

iterator in interface CopyOnWriteIndexPart<T extends FeatureStructure>

Returns:

iterator over all the elements

moveTo

public int moveTo(FeatureStructure fs)

if the fs is in the set, the iterator should return it. if not, return -1 (makes iterator invalid)

Parameters:

fs - position to this fs

Returns:

the index if present, otherwise -1;

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getCapacity

public int getCapacity()

Returns:

the capacity >= size

See Also:

Common_hash_support.getCapacity()

size

public final int size()

Specified by:

size in interface CopyOnWriteIndexPart<T extends FeatureStructure>

Returns:

the size

See Also:

Common_hash_support.size()

isOriginal

public boolean isOriginal()

Specified by:

isOriginal in interface CopyOnWriteIndexPart<T extends FeatureStructure>

Returns:

true if this cow version is the same as the original. true means the index has not been updated

copyToArray

public int copyToArray(T[] target,
                       int startingIndexInTarget)

Description copied from interface: CopyOnWriteIndexPart

Copy FS refs to target from this index part

Specified by:

copyToArray in interface CopyOnWriteIndexPart<T extends FeatureStructure>

Parameters:

target - the target array to copy into

startingIndexInTarget - the starting index in the target array

Returns:

startingIndexInTarget + size