org.apache.lucene.util.packed
Class BlockPackedReaderIterator

java.lang.Object
  org.apache.lucene.util.packed.BlockPackedReaderIterator

public final class BlockPackedReaderIterator
extends Object

Reader for sequences of longs written with BlockPackedWriter.

See Also:

BlockPackedWriter

NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.

Constructor Summary

BlockPackedReaderIterator(DataInput in, int packedIntsVersion, int blockSize, long valueCount)
Sole constructor.

Method Summary

long	next() Read the next value.
LongsRef	next(int count) Read between 1 and count values.
long	ord() Return the offset of the next value to read.
void	reset(DataInput in, long valueCount) Reset the current reader to wrap a stream of valueCount values contained in in.
void	skip(long count) Skip exactly count values.

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockPackedReaderIterator

public BlockPackedReaderIterator(DataInput in,
                                 int packedIntsVersion,
                                 int blockSize,
                                 long valueCount)

Sole constructor.

Parameters:

blockSize - the number of values of a block, must be equal to the block size of the BlockPackedWriter which has been used to write the stream

Method Detail

reset

public void reset(DataInput in,
                  long valueCount)

Reset the current reader to wrap a stream of valueCount values contained in in. The block size remains unchanged.

skip

public void skip(long count)
          throws IOException

Skip exactly count values.

Throws:

IOException

next

public long next()
          throws IOException

Read the next value.

Throws:

IOException

next

public LongsRef next(int count)
              throws IOException

Read between 1 and count values.

Throws:

IOException

ord

public long ord()

Return the offset of the next value to read.