Examples of com.hp.hpl.jena.tdb.base.file.BlockAccess

com.hp.hpl.jena.tdb.base.file.BlockAccess
Interface to concrete storage - read and write Blocks, addressed by id. Suitable for memory mapped I/O (returns internally allocated space for read, not provided from outside; write() can insist the block written comes from allocate()). This is wrapped in a BlockMgr to provide a higher level abstraction. @see BufferChannel

    @Override
    protected BlockMgr make()
    { 
        // Make directly - no wrapper, no cache, no free block mgt.
        FileOps.delete(filename) ;
        BlockAccess file = new BlockAccessDirect(filename, BlkSize) ;
        BlockMgr mgr = new BlockMgrFileAccess(file, BlkSize) ;
        if ( BlockMgrFactory.AddTracker )
            mgr = BlockMgrFactory.tracker(mgr) ;
        return mgr ;
    }

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    @Override
    protected BlockMgr make()
    { 
        clearBlockMgr() ;
        BlockAccess file = new BlockAccessMapped(filename, BlkSize) ;
        return new BlockMgrFileAccess(file, BlkSize) ;
    }

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    @Override
    protected BlockMgr make()
    { 
        // Make directly - no wrapper, no cache, no free block mgt.
        FileOps.delete(filename) ;
        BlockAccess file = new BlockAccessDirect(filename, BlkSize) ;
        BlockMgr mgr = new BlockMgrFileAccess(file, BlkSize) ;
        if ( BlockMgrFactory.AddTracker )
            mgr = BlockMgrFactory.tracker(mgr) ;
        return mgr ;
    }

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Related Classes of com.hp.hpl.jena.tdb.base.file.BlockAccess

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

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

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

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