/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jena.tdb.index.bplustree;
import org.apache.jena.tdb.base.block.Block ;
import org.apache.jena.tdb.base.block.BlockConverter ;
import org.apache.jena.tdb.base.block.BlockType ;
import org.apache.jena.tdb.base.record.RecordFactory ;
import org.apache.jena.tdb.base.recordbuffer.RecordBufferPage ;
import org.apache.jena.tdb.base.recordbuffer.RecordBufferPageMgr ;
import org.apache.jena.tdb.base.recordbuffer.RecordBufferPageMgr.Block2RecordBufferPage ;
/** Bridge for making, getting and putting BPTreeRecords over a RecordBufferPageMgr */
final public class BPTreeRecordsMgr extends BPTreePageMgr<BPTreeRecords>
{
// Only "public" for external very low level tools in development to access this class.
// Assume package access.
private RecordBufferPageMgr rBuffPageMgr ;
BPTreeRecordsMgr(BPlusTree bpTree, RecordBufferPageMgr rBuffPageMgr)
{
super(bpTree, null, rBuffPageMgr.getBlockMgr()) ;
this.rBuffPageMgr = rBuffPageMgr ;
super.setConverter(new Block2BPTreeRecords(bpTree, bpTree.getRecordFactory())) ;
}
/** Converter BPTreeRecords -- make a RecordBufferPage and wraps it.*/
static class Block2BPTreeRecords implements BlockConverter<BPTreeRecords>
{
private Block2RecordBufferPage recordBufferConverter ;
private BPlusTree bpTree ;
Block2BPTreeRecords(BPlusTree bpTree, RecordFactory recordFactory)
{
this.bpTree = bpTree ;
this.recordBufferConverter = new RecordBufferPageMgr.Block2RecordBufferPage(recordFactory) ;
}
@Override
public BPTreeRecords fromBlock(Block block)
{
RecordBufferPage rbp = recordBufferConverter.fromBlock(block) ;
return new BPTreeRecords(bpTree, rbp) ;
}
@Override
public Block toBlock(BPTreeRecords t)
{
return recordBufferConverter.toBlock(t.getRecordBufferPage()) ;
}
@Override
public BPTreeRecords createFromBlock(Block block, BlockType bType)
{
RecordBufferPage rbp = recordBufferConverter.createFromBlock(block, bType) ;
return new BPTreeRecords(bpTree, rbp) ;
}
}
public BPTreeRecords create()
{
return super.create(BlockType.RECORD_BLOCK) ;
//
// RecordBufferPage rbp = rBuffPageMgr.create() ;
// BPTreeRecords bRec = new BPTreeRecords(bpTree, rbp) ;
// return bRec ;
}
public RecordBufferPageMgr getRecordBufferPageMgr() { return rBuffPageMgr ; }
@Override
public void startRead() { rBuffPageMgr.startRead() ; }
@Override
public void finishRead() { rBuffPageMgr.finishRead() ; }
@Override
public void startUpdate() { rBuffPageMgr.startUpdate() ; }
@Override
public void finishUpdate() { rBuffPageMgr.finishUpdate() ; }
}