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

Examples of com.hp.hpl.jena.tdb.base.recordbuffer.RecordBufferPageMgr

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    private BPlusTree(BPlusTreeParams params, BlockMgr blkMgrNodes, BlockMgr blkMgrRecords)
    {
        // Consistency checks.
        this.bpTreeParams = params ;
        this.nodeManager = new BPTreeNodeMgr(this, blkMgrNodes) ;
        RecordBufferPageMgr recordPageMgr = new RecordBufferPageMgr(params.getRecordFactory(), blkMgrRecords) ;
        recordsMgr = new BPTreeRecordsMgr(this, recordPageMgr) ;
    }
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    {
        // Look for starting RecordsBufferPage id.
        int id = BPTreeNode.recordsPageId(node, fromRec) ;
        if ( id < 0 )
            return Iter.nullIter() ;
        RecordBufferPageMgr pageMgr = node.getBPlusTree().getRecordsMgr().getRecordBufferPageMgr() ;
        // No pages are active at this point.
        return RecordRangeIterator.iterator(id, fromRec, toRec, pageMgr) ;
    }
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        {
            divider() ;
            System.out.println("---- Data level") ;
        }

        final RecordBufferPageMgr mgr = bpt.getRecordsMgr().getRecordBufferPageMgr() ;
        Iterator<RecordBufferPage> iter = new RecordBufferPageLinker(new RecordBufferPagePacker(records, mgr)) ;

        Transform<RecordBufferPage, Pair<Integer, Record>> transform = new Transform<RecordBufferPage, Pair<Integer, Record>>()
        {
            @Override
            public Pair<Integer, Record> convert(RecordBufferPage rbp)
            {
                mgr.put(rbp) ;
                Record r = rbp.getRecordBuffer().getHigh() ;
                r = bpt.getRecordFactory().createKeyOnly(r) ;
                return new Pair<>(rbp.getId(), r) ;
            }
        } ;
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        }
       
        @Override
        protected Record rebalance(int id1, Record r1, int id2, Record r2)
        {
            RecordBufferPageMgr mgr = bpt.getRecordsMgr().getRecordBufferPageMgr() ;
            RecordBufferPage page1 = mgr.getWrite(id1) ;
            RecordBufferPage page2 = mgr.getWrite(id2) ;
           
            // Wrong calculatation.
            for ( int i = page2.getCount() ; i <  page1.getMaxSize()/2 ; i++ )
            {
                //shiftOneup(node1, node2) ;
                Record r = page1.getRecordBuffer().getHigh() ;
                page1.getRecordBuffer().removeTop() ;

                page2.getRecordBuffer().add(0, r) ;
            }

            mgr.put(page1) ;
            mgr.put(page2) ;
           
            Record splitPoint = page1.getRecordBuffer().getHigh() ;
            splitPoint = bpt.getRecordFactory().createKeyOnly(splitPoint) ;
            //Record splitPoint = node1.maxRecord() ;
            return splitPoint ;
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    @Test public void recBufferPage01()
    {
        BlockMgr blkMgr = makeBlockMgr() ;
        blkMgr.beginUpdate() ;
        RecordBufferPageMgr rpm = new RecordBufferPageMgr(factory, blkMgr) ;
        RecordBufferPage page = rpm.create() ;
        fill(page.getRecordBuffer(), 10, 20, 30) ;
        assertEquals(10, get(page, 0)) ;
        assertEquals(20, get(page, 1)) ;
        assertEquals(30, get(page, 2)) ;
        rpm.release(page) ;
        blkMgr.endUpdate() ;
    }
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    @Test public void recBufferPage02()
    {
        BlockMgr blkMgr = makeBlockMgr() ;
        blkMgr.beginUpdate() ;
        RecordBufferPageMgr rpm = new RecordBufferPageMgr(factory, blkMgr) ;
        int x = -99 ;
        {
            RecordBufferPage page1 = rpm.create() ;
            fill(page1.getRecordBuffer(), 10, 20, 30) ;
            x = page1.getId() ;
            rpm.put(page1) ;
            page1 = null ;
        }
        blkMgr.endUpdate() ;
        blkMgr.beginRead() ;
        {
            RecordBufferPage page2 = rpm.getRead(x) ;
            assertEquals(10, get(page2, 0)) ;
            assertEquals(20, get(page2, 1)) ;
            assertEquals(30, get(page2, 2)) ;
            rpm.release(page2) ;
        }
        blkMgr.endRead() ;
    }
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        blockSize =  4*8 ;  // Which is 6 int records
        recordFactory = new RecordFactory(4, 0) ;
       
        bufSizeRecord = RecordBufferPage.calcRecordSize(recordFactory, blockSize) ;
        blkMgrRecords = BlockMgrFactory.createMem("BPTreeRecords", blockSize) ;
        recordBufferPageMgr = new RecordBufferPageMgr(recordFactory, blkMgrRecords) ;
       
        // B+Tree order does not matter.
        bPlusTree = BPlusTree.attach(new BPlusTreeParams(3, recordFactory), null, blkMgrRecords) ;
    }
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        blockSize =  4*8 ;  // Which is 6 int records
        recordFactory = new RecordFactory(4, 0) ;
       
        bufSizeRecord = RecordBufferPage.calcRecordSize(recordFactory, blockSize) ;
        blkMgrRecords = BlockMgrFactory.createMem("BPTreeRecords", blockSize) ;
        recordBufferPageMgr = new RecordBufferPageMgr(recordFactory, blkMgrRecords) ;
       
        // B+Tree order does not matter.
        bPlusTree = BPlusTree.attach(new BPlusTreeParams(3, recordFactory), null, blkMgrRecords) ;
    }
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    @Test public void recBufferPage01()
    {
        BlockMgr blkMgr = makeBlockMgr() ;
        blkMgr.beginUpdate() ;
        RecordBufferPageMgr rpm = new RecordBufferPageMgr(factory, blkMgr) ;
        RecordBufferPage page = rpm.create() ;
        fill(page.getRecordBuffer(), 10, 20, 30) ;
        assertEquals(10, get(page, 0)) ;
        assertEquals(20, get(page, 1)) ;
        assertEquals(30, get(page, 2)) ;
        rpm.release(page) ;
        blkMgr.endUpdate() ;
    }
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    @Test public void recBufferPage02()
    {
        BlockMgr blkMgr = makeBlockMgr() ;
        blkMgr.beginUpdate() ;
        RecordBufferPageMgr rpm = new RecordBufferPageMgr(factory, blkMgr) ;
        int x = -99 ;
        {
            RecordBufferPage page1 = rpm.create() ;
            fill(page1.getRecordBuffer(), 10, 20, 30) ;
            x = page1.getId() ;
            rpm.put(page1) ;
            page1 = null ;
        }
        blkMgr.endUpdate() ;
        blkMgr.beginRead() ;
        {
            RecordBufferPage page2 = rpm.getRead(x) ;
            assertEquals(10, get(page2, 0)) ;
            assertEquals(20, get(page2, 1)) ;
            assertEquals(30, get(page2, 2)) ;
            rpm.release(page2) ;
        }
        blkMgr.endRead() ;
    }
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