JavaEWAH 1.2.3 · com.googlecode.javaewah.IteratorAggregation

Modifier and Type	Field and Description
public static final int	DEFAULT_MAX_BUF_SIZE An optimization option.

Access	Constructor and Description
private	IteratorAggregation() Private constructor to prevent instantiation

Method Summary

Modifier and Type	Method and Description
pack-priv static void	andToContainer(final BitmapStorage container, int desiredrlwcount, final IteratingRLW rlwi, IteratingRLW rlwj)
pack-priv static void	andToContainer(final BitmapStorage container, final IteratingRLW rlwi, IteratingRLW rlwj)
public static IteratingRLW	Returns: and aggregate bufferedand(final IteratingRLW... set of iterators to aggregate al) Aggregate the iterators using a bitmap buffer.
public static IteratingRLW	Returns: and aggregate bufferedand(final int size of the internal buffer used by the iterator in 64-bit words (per input iterator) bufSize, final IteratingRLW... set of iterators to aggregate al) Aggregate the iterators using a bitmap buffer.
public static IteratingRLW	Returns: or aggregate bufferedor(final IteratingRLW... set of iterators to aggregate al) Aggregate the iterators using a bitmap buffer.
public static IteratingRLW	Returns: or aggregate bufferedor(final int size of the internal buffer used by the iterator in 64-bit words bufSize, final IteratingRLW... iterators to aggregate al) Aggregate the iterators using a bitmap buffer.
public static IteratingRLW	Returns: xor aggregate bufferedxor(final IteratingRLW... set of iterators to aggregate al) Aggregate the iterators using a bitmap buffer.
public static IteratingRLW	Returns: xor aggregate bufferedxor(final int size of the internal buffer used by the iterator in 64-bit words bufSize, final IteratingRLW... iterators to aggregate al) Aggregate the iterators using a bitmap buffer.
protected static long	Returns: how many written discharge(final BitmapStorage target for writes container, IteratingRLW source of data i, long maximal number of writes max) Write out up to max words, returns how many were written
protected static void	dischargeAsEmpty(final BitmapStorage where we write container, final IteratingRLW the iterator i) Write out the content of the iterator, but as if it were all zeros.
protected static long	Returns: how many written dischargeNegated(final BitmapStorage target for writes container, IteratingRLW source of data i, long maximal number of writes max) Write out up to max negated words, returns how many were written
protected static int	inplaceand(long[] bitmap, IteratingRLW i)
protected static int	inplaceor(long[] bitmap, IteratingRLW i)
protected static int	inplacexor(long[] bitmap, IteratingRLW i)
public static IteratingRLW	Returns: negated version of the iterator not(final IteratingRLW iterator to negate x)
public static void	xorToContainer(final BitmapStorage where to write container, int number of words to be written (max) desiredrlwcount, final IteratingRLW first iterator to aggregate rlwi, final IteratingRLW second iterator to aggregate rlwj) Compute the first few words of the XOR aggregate between two iterators.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

DEFAULT_MAX_BUF_SIZE	back to summary
public static final int DEFAULT_MAX_BUF_SIZE An optimization option. Larger values may improve speed, but at the expense of memory.

IteratorAggregation	back to summary
private IteratorAggregation() Private constructor to prevent instantiation

Method Detail

andToContainer	back to summary
pack-priv static void andToContainer(final BitmapStorage container, int desiredrlwcount, final IteratingRLW rlwi, IteratingRLW rlwj)

andToContainer	back to summary
pack-priv static void andToContainer(final BitmapStorage container, final IteratingRLW rlwi, IteratingRLW rlwj)

bufferedand	back to summary
public static IteratingRLW bufferedand(final IteratingRLW... al) Aggregate the iterators using a bitmap buffer. Parameters al:IteratingRLW[] set of iterators to aggregate Returns:IteratingRLW and aggregate

bufferedand

back to summary

public static IteratingRLW bufferedand(final IteratingRLW... al)

Aggregate the iterators using a bitmap buffer.

Parameters

al:IteratingRLW[]: set of iterators to aggregate

Returns:IteratingRLW

and aggregate

bufferedand	back to summary
public static IteratingRLW bufferedand(final int bufSize, final IteratingRLW... al) Aggregate the iterators using a bitmap buffer. Parameters bufSize:int size of the internal buffer used by the iterator in 64-bit words (per input iterator) al:IteratingRLW[] set of iterators to aggregate Returns:IteratingRLW and aggregate

bufferedand

back to summary

public static IteratingRLW bufferedand(final int bufSize, final IteratingRLW... al)

Aggregate the iterators using a bitmap buffer.

Parameters

bufSize:int: size of the internal buffer used by the iterator in 64-bit words (per input iterator)
al:IteratingRLW[]: set of iterators to aggregate

Returns:IteratingRLW

and aggregate

bufferedor	back to summary
public static IteratingRLW bufferedor(final IteratingRLW... al) Aggregate the iterators using a bitmap buffer. Parameters al:IteratingRLW[] set of iterators to aggregate Returns:IteratingRLW or aggregate

bufferedor

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public static IteratingRLW bufferedor(final IteratingRLW... al)

Aggregate the iterators using a bitmap buffer.

Parameters

al:IteratingRLW[]: set of iterators to aggregate

Returns:IteratingRLW

or aggregate

bufferedor	back to summary
public static IteratingRLW bufferedor(final int bufSize, final IteratingRLW... al) Aggregate the iterators using a bitmap buffer. Parameters bufSize:int size of the internal buffer used by the iterator in 64-bit words al:IteratingRLW[] iterators to aggregate Returns:IteratingRLW or aggregate

bufferedor

back to summary

public static IteratingRLW bufferedor(final int bufSize, final IteratingRLW... al)

Aggregate the iterators using a bitmap buffer.

Parameters

bufSize:int: size of the internal buffer used by the iterator in 64-bit words
al:IteratingRLW[]: iterators to aggregate

Returns:IteratingRLW

or aggregate

bufferedxor	back to summary
public static IteratingRLW bufferedxor(final IteratingRLW... al) Aggregate the iterators using a bitmap buffer. Parameters al:IteratingRLW[] set of iterators to aggregate Returns:IteratingRLW xor aggregate

bufferedxor

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public static IteratingRLW bufferedxor(final IteratingRLW... al)

Aggregate the iterators using a bitmap buffer.

Parameters

al:IteratingRLW[]: set of iterators to aggregate

Returns:IteratingRLW

xor aggregate

bufferedxor	back to summary
public static IteratingRLW bufferedxor(final int bufSize, final IteratingRLW... al) Aggregate the iterators using a bitmap buffer. Parameters bufSize:int size of the internal buffer used by the iterator in 64-bit words al:IteratingRLW[] iterators to aggregate Returns:IteratingRLW xor aggregate

bufferedxor

back to summary

public static IteratingRLW bufferedxor(final int bufSize, final IteratingRLW... al)

Aggregate the iterators using a bitmap buffer.

Parameters

bufSize:int: size of the internal buffer used by the iterator in 64-bit words
al:IteratingRLW[]: iterators to aggregate

Returns:IteratingRLW

xor aggregate

discharge	back to summary
protected static long discharge(final BitmapStorage container, IteratingRLW i, long max) Write out up to max words, returns how many were written Parameters container:BitmapStorage target for writes i:IteratingRLW source of data max:long maximal number of writes Returns:long how many written

discharge

back to summary

protected static long discharge(final BitmapStorage container, IteratingRLW i, long max)

Write out up to max words, returns how many were written

Parameters

container:BitmapStorage: target for writes
i:IteratingRLW: source of data
max:long: maximal number of writes

Returns:long

how many written

dischargeAsEmpty	back to summary
protected static void dischargeAsEmpty(final BitmapStorage container, final IteratingRLW i) Write out the content of the iterator, but as if it were all zeros. Parameters container:BitmapStorage where we write i:IteratingRLW the iterator

dischargeAsEmpty

back to summary

protected static void dischargeAsEmpty(final BitmapStorage container, final IteratingRLW i)

Write out the content of the iterator, but as if it were all zeros.

Parameters

container:BitmapStorage: where we write
i:IteratingRLW: the iterator

dischargeNegated	back to summary
protected static long dischargeNegated(final BitmapStorage container, IteratingRLW i, long max) Write out up to max negated words, returns how many were written Parameters container:BitmapStorage target for writes i:IteratingRLW source of data max:long maximal number of writes Returns:long how many written

dischargeNegated

back to summary

protected static long dischargeNegated(final BitmapStorage container, IteratingRLW i, long max)

Write out up to max negated words, returns how many were written

Parameters

container:BitmapStorage: target for writes
i:IteratingRLW: source of data
max:long: maximal number of writes

Returns:long

how many written

inplaceand	back to summary
protected static int inplaceand(long[] bitmap, IteratingRLW i)

inplaceor	back to summary
protected static int inplaceor(long[] bitmap, IteratingRLW i)

inplacexor	back to summary
protected static int inplacexor(long[] bitmap, IteratingRLW i)

not	back to summary
public static IteratingRLW not(final IteratingRLW x) Parameters x:IteratingRLW iterator to negate Returns:IteratingRLW negated version of the iterator

xorToContainer	back to summary
public static void xorToContainer(final BitmapStorage container, int desiredrlwcount, final IteratingRLW rlwi, final IteratingRLW rlwj) Compute the first few words of the XOR aggregate between two iterators. Parameters container:BitmapStorage where to write desiredrlwcount:int number of words to be written (max) rlwi:IteratingRLW first iterator to aggregate rlwj:IteratingRLW second iterator to aggregate

xorToContainer

back to summary

public static void xorToContainer(final BitmapStorage container, int desiredrlwcount, final IteratingRLW rlwi, final IteratingRLW rlwj)

Compute the first few words of the XOR aggregate between two iterators.

Parameters

container:BitmapStorage: where to write
desiredrlwcount:int: number of words to be written (max)
rlwi:IteratingRLW: first iterator to aggregate
rlwj:IteratingRLW: second iterator to aggregate

public final Class IteratorAggregation

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail