Package com.hp.hpl.jena.tdb.base.block

Examples of com.hp.hpl.jena.tdb.base.block.Block

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        // Buffer pool?
       
        // Nodes can be writtern during reads.
        // Make sure this operation is sync'ed.
        int maxSize = nodec.maxSize(node) ;
        Block block = file.allocWrite(maxSize) ;
        try {
            int len = nodec.encode(node, block.getByteBuffer(), null) ;
            file.completeWrite(block) ;
            return block.getId() ;
        } catch (TDBException ex)
        {
            file.abortWrite(block) ;
            throw ex ;
        }
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        switch (e.getType())
        {
            case Block:
            {
                BlockMgr blkMgr = sConf.blockMgrs.get(e.getFileRef()) ;
                Block blk = e.getBlock() ;
                log.debug("Replay: {} {}",e.getFileRef(), blk) ;
                blk.setModified(true) ;
                blkMgr.overwrite(blk) ;
                return true ;
            }  
            case Buffer:
            {
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    }

    @Override
    public Block allocWrite(int maxBytes)
    {
        Block blk = other.allocWrite(maxBytes) ;
        info("allocWrite("+maxBytes+") -> "+blk.getId()) ;
        return blk ;
    }
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        if ( writeBuffer == null || spaceRequired > writeBuffer.remaining() )
        {
            // Too big. Have flushed buffering if buffering.
            inAllocWrite = true ;
            ByteBuffer bb = ByteBuffer.allocate(bytesSpace) ;
            allocBlock = new Block(filesize, bb) ; 
            allocLocation = -1 ;
            //log.info("AW:"+state()+"-> ----") ;
            return allocBlock ;
        }
       
        // Will fit.
        inAllocWrite = true ;
        int start = writeBuffer.position() ;
        // Old values for restoration
        oldBufferPosn = start ;
        oldBufferLimit = writeBuffer.limit() ;
       
        // id (but don't tell the caller yet).
        allocLocation = filesize+start ;
       
        // Slice it.
        writeBuffer.putInt(bytesSpace) ;
        writeBuffer.position(start + SizeOfInt) ;
        writeBuffer.limit(start+spaceRequired) ;
        ByteBuffer bb = writeBuffer.slice() ;

        allocBlock = new Block(allocLocation, bb) ;

        if ( logging )
            log("AW: %s->0x%X", state(), allocLocation) ;
        return allocBlock ;
    }
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            // It's manipulated in-place so no conversion needed,
            // Just the count needs to be fixed up.
//            ByteBuffer bb = node.getBackingByteBuffer() ;
//            BlockType bType = (node.isLeaf ? BPTREE_LEAF : BPTREE_BRANCH ) ;

            Block block = node.getBackingBlock() ;
            BlockType bType = (node.isLeaf ? BPTREE_LEAF : BPTREE_BRANCH ) ;

            int c = encodeCount(bType, node.getCount()) ;
            block.getByteBuffer().putInt(0, c) ;
            return block ;
        }
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    public Block allocate(int blockSize)
    {
        checkIfClosed() ;
        // Might as well allocate now.
        // This allocates the id.
        Block block = blockMgr.allocate(blockSize) ;
        // [TxTDB:TODO]
        // But we "copy" it by allocating ByteBuffer space.
        if ( active )
        {
            block = replicate(block) ;
            writeBlocks.put(block.getId(), block) ;
        }
        return block ;
    }
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    @Override
    public Block getRead(long id)
    {
        checkIfClosed() ;
        Block block = localBlock(id) ;
        if ( block != null )
            return block ;
        block = blockMgr.getRead(id) ;
        if ( active )
            readBlocks.add(block.getId()) ;
        return block ;
    }
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    @Override
    public Block getReadIterator(long id)
    {
        //logState() ;
        checkIfClosed() ;
        Block block = localBlock(id) ;
        if ( block == null )
            block = blockMgr.getReadIterator(id) ;
        if ( block == null )
            throw new BlockException("No such block: "+getLabel()+" "+id) ;
        if ( active )
            iteratorBlocks.add(block.getId()) ;
        return block ;
    }
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    {
        // NB: If we are in a stack of BlockMgrs, after a transaction has committed,
        // we would be called via getRead and the upper Blockgr does the promotion.
        checkActive() ;
        checkIfClosed() ;
        Block block = localBlock(id) ;
        if ( block != null )
            return block ;
       
        // Get-as-read.
        block = blockMgr.getRead(id) ;
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        if ( blkSize > 0 && blkSize != this.blockSize )
            throw new FileException("Fixed blocksize only: request= "+blkSize+"fixed size="+this.blockSize) ;
        int id = allocateId() ;
        ByteBuffer bb = getByteBuffer(id) ;
        bb.position(0) ;
        Block block = new Block(id, bb) ;
        return block ;
    }
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Related Classes of com.hp.hpl.jena.tdb.base.block.Block

  • com.hp.hpl.jena.tdb.base.block.TestBlockMgrTracked
  • com.hp.hpl.jena.tdb.base.file.AbstractTestBlockAccessFixedSize
  • com.hp.hpl.jena.tdb.base.file.AbstractTestBlockAccessVarSize
  • com.hp.hpl.jena.tdb.base.file.BlockAccessByteArray
  • com.hp.hpl.jena.tdb.base.file.BlockAccessDirect
  • com.hp.hpl.jena.tdb.base.file.BlockAccessMapped
  • com.hp.hpl.jena.tdb.base.file.BlockAccessMem
  • com.hp.hpl.jena.tdb.base.objectfile.AbstractTestObjectFile
  • com.hp.hpl.jena.tdb.base.objectfile.ObjectFileLogger
  • com.hp.hpl.jena.tdb.base.objectfile.ObjectFileMem
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