Package org.apache.jena.dboe.base.block

Class BlockMgrReadonly

java.lang.Object

org.apache.jena.dboe.base.block.BlockMgrWrapper

org.apache.jena.dboe.base.block.BlockMgrReadonly

All Implemented Interfaces:

org.apache.jena.atlas.lib.Closeable, org.apache.jena.atlas.lib.Sync, BlockMgr

public class BlockMgrReadonly
extends BlockMgrWrapper

Constructor Summary

Constructors

Constructor	Description
BlockMgrReadonly(BlockMgr blockMgr)

Method Summary

Modifier and Type	Method	Description
Block	allocate(int blockSize)	Allocate an uninitialized block - writable - call only inside a update sequence.
void	beginUpdate()	Start of update
void	endUpdate()	Completion of update
void	free(Block block)	Announce a block is no longer in use (i.e it's now freed)
Block	getWrite(long id)	Fetch a block, use for write and read - only inside "update"
void	overwrite(Block block)	Replace the contents of a block slot with new contents.
Block	promote(Block block)	Promote to writable : it's OK to promote an already writable block
String	toString()
void	write(Block block)	Write a block back - it still needs releasing.

Methods inherited from class org.apache.jena.dboe.base.block.BlockMgrWrapper

allocLimit, beginRead, close, endRead, getLabel, getRead, getWrapped, isClosed, isEmpty, release, resetAlloc, sync, syncForce, valid

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

BlockMgrReadonly

public BlockMgrReadonly(BlockMgr blockMgr)

Method Details

beginUpdate

public void beginUpdate()

Description copied from interface: BlockMgr

Start of update

Specified by:

beginUpdate in interface BlockMgr

Overrides:

beginUpdate in class BlockMgrWrapper

endUpdate

public void endUpdate()

Description copied from interface: BlockMgr

Completion of update

Specified by:

endUpdate in interface BlockMgr

Overrides:

endUpdate in class BlockMgrWrapper

allocate

public Block allocate(int blockSize)

Description copied from interface: BlockMgr

Allocate an uninitialized block - writable - call only inside a update sequence. If blockSize is -1, means "default/fixed size" for this BlockMgr

Specified by:

allocate in interface BlockMgr

Overrides:

allocate in class BlockMgrWrapper

getWrite

public Block getWrite(long id)

Description copied from interface: BlockMgr

Fetch a block, use for write and read - only inside "update"

Specified by:

getWrite in interface BlockMgr

Overrides:

getWrite in class BlockMgrWrapper

promote

public Block promote(Block block)

Description copied from interface: BlockMgr

Promote to writable : it's OK to promote an already writable block

Specified by:

promote in interface BlockMgr

Overrides:

promote in class BlockMgrWrapper

write

public void write(Block block)

Description copied from interface: BlockMgr

Write a block back - it still needs releasing.

Specified by:

write in interface BlockMgr

Overrides:

write in class BlockMgrWrapper

overwrite

public void overwrite(Block block)

Description copied from interface: BlockMgr

Replace the contents of a block slot with new contents. Block does not need releasing. The write() operation may not do real work if the block is mapped - this operation really does replace the contents with the new contents.

Specified by:

overwrite in interface BlockMgr

Overrides:

overwrite in class BlockMgrWrapper

free

public void free(Block block)

Description copied from interface: BlockMgr

Announce a block is no longer in use (i.e it's now freed)

Specified by:

free in interface BlockMgr

Overrides:

free in class BlockMgrWrapper

toString

public String toString()

Overrides:

toString in class BlockMgrWrapper