| /* |
| * Copyright 2009-2010 by The Regents of the University of California |
| * Licensed 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 from |
| * |
| * 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 edu.uci.ics.hyracks.storage.am.btree.dataflow; |
| |
| import edu.uci.ics.hyracks.api.context.IHyracksTaskContext; |
| import edu.uci.ics.hyracks.api.exceptions.HyracksDataException; |
| import edu.uci.ics.hyracks.storage.am.btree.exceptions.BTreeException; |
| import edu.uci.ics.hyracks.storage.am.btree.frames.BTreeLeafFrameType; |
| import edu.uci.ics.hyracks.storage.am.btree.util.BTreeUtils; |
| import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndex; |
| import edu.uci.ics.hyracks.storage.am.common.dataflow.AbstractTreeIndexOperatorDescriptor; |
| import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexOperatorDescriptor; |
| import edu.uci.ics.hyracks.storage.am.common.dataflow.TreeIndexDataflowHelper; |
| |
| public class BTreeDataflowHelper extends TreeIndexDataflowHelper { |
| public BTreeDataflowHelper(IIndexOperatorDescriptor opDesc, IHyracksTaskContext ctx, int partition) { |
| super(opDesc, ctx, partition); |
| } |
| |
| @Override |
| public ITreeIndex createIndexInstance() throws HyracksDataException { |
| AbstractTreeIndexOperatorDescriptor treeOpDesc = (AbstractTreeIndexOperatorDescriptor) opDesc; |
| try { |
| return BTreeUtils.createBTree(opDesc.getStorageManager().getBufferCache(ctx), opDesc.getStorageManager() |
| .getFileMapProvider(ctx), treeOpDesc.getTreeIndexTypeTraits(), treeOpDesc |
| .getTreeIndexComparatorFactories(), BTreeLeafFrameType.REGULAR_NSM, file); |
| } catch (BTreeException e) { |
| throw new HyracksDataException(e); |
| } |
| } |
| } |