org.aksw.jena_sparql_api.io.binseach

Interface Block

All Superinterfaces:

AutoCloseable, ChannelFactory<Seekable>, Segment

All Known Implementing Classes:

DecodedDataBlock

public interface Block
extends Segment

A block is a sub-sequence of bytes with a fixed finite length which however may be initially unknown, and thus has a certain horizon of explored length. A block's full length can at any time be requested, hence a Block is a subclass of Segment. A block has an offset value into the sequence that contains the block. For example, a block may backed by a bz2 decoding input stream, and only if the stream hits the end, we know how much data there is actually in the block.

Author:

raven

Method Summary

Modifier and Type	Method and Description
long	getOffset() Offset in a parent container; should be 0 if there is none
boolean	hasNext() Check if there is a subsequent block.
boolean	hasPrev()
Reference<Block>	nextBlock() The block source of this block - if any.
Reference<Block>	prevBlock()

Methods inherited from interface org.aksw.jena_sparql_api.io.binseach.Segment

length

Methods inherited from interface org.aksw.jena_sparql_api.io.api.ChannelFactory

newChannel

Methods inherited from interface java.lang.AutoCloseable

close

Method Detail

getOffset

long getOffset()

Offset in a parent container; should be 0 if there is none

Returns:

nextBlock

Reference<Block> nextBlock()
                    throws IOException

The block source of this block - if any.

Returns:

the block source or null if there is none

Throws:

IOException

prevBlock

Reference<Block> prevBlock()
                    throws IOException

Throws:

IOException

hasNext

boolean hasNext()
         throws IOException

Check if there is a subsequent block.

Returns:

Throws:

IOException

hasPrev

boolean hasPrev()
         throws IOException

Throws:

IOException