| /* |
| * 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.common.dataflow; |
| |
| import java.nio.ByteBuffer; |
| |
| import edu.uci.ics.hyracks.api.context.IHyracksTaskContext; |
| import edu.uci.ics.hyracks.api.dataflow.value.IRecordDescriptorProvider; |
| import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor; |
| import edu.uci.ics.hyracks.api.exceptions.HyracksDataException; |
| import edu.uci.ics.hyracks.dataflow.common.comm.io.FrameTupleAccessor; |
| import edu.uci.ics.hyracks.dataflow.common.comm.util.FrameUtils; |
| import edu.uci.ics.hyracks.dataflow.std.base.AbstractUnaryInputUnaryOutputOperatorNodePushable; |
| import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndex; |
| import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndexAccessor; |
| import edu.uci.ics.hyracks.storage.am.common.ophelpers.IndexOp; |
| |
| public class TreeIndexInsertUpdateDeleteOperatorNodePushable extends AbstractUnaryInputUnaryOutputOperatorNodePushable { |
| private final TreeIndexDataflowHelper treeIndexHelper; |
| private FrameTupleAccessor accessor; |
| private final IRecordDescriptorProvider recordDescProvider; |
| private final IndexOp op; |
| private final PermutingFrameTupleReference tuple = new PermutingFrameTupleReference(); |
| private ByteBuffer writeBuffer; |
| private ITreeIndexAccessor indexAccessor; |
| |
| public TreeIndexInsertUpdateDeleteOperatorNodePushable(AbstractTreeIndexOperatorDescriptor opDesc, |
| IHyracksTaskContext ctx, int partition, int[] fieldPermutation, |
| IRecordDescriptorProvider recordDescProvider, IndexOp op) { |
| // Only create the if insert operation is an insert. |
| boolean createIfNotExists = (op == IndexOp.INSERT); |
| treeIndexHelper = (TreeIndexDataflowHelper) opDesc.getIndexDataflowHelperFactory().createIndexDataflowHelper( |
| opDesc, ctx, partition, createIfNotExists); |
| this.recordDescProvider = recordDescProvider; |
| this.op = op; |
| tuple.setFieldPermutation(fieldPermutation); |
| } |
| |
| @Override |
| public void open() throws HyracksDataException { |
| AbstractTreeIndexOperatorDescriptor opDesc = (AbstractTreeIndexOperatorDescriptor) treeIndexHelper |
| .getOperatorDescriptor(); |
| RecordDescriptor inputRecDesc = recordDescProvider.getInputRecordDescriptor(opDesc.getOperatorId(), 0); |
| accessor = new FrameTupleAccessor(treeIndexHelper.getHyracksTaskContext().getFrameSize(), inputRecDesc); |
| writeBuffer = treeIndexHelper.getHyracksTaskContext().allocateFrame(); |
| writer.open(); |
| try { |
| treeIndexHelper.init(); |
| ITreeIndex treeIndex = (ITreeIndex) treeIndexHelper.getIndex(); |
| indexAccessor = treeIndex.createAccessor(); |
| } catch (Exception e) { |
| // cleanup in case of failure |
| treeIndexHelper.deinit(); |
| throw new HyracksDataException(e); |
| } |
| } |
| |
| @Override |
| public void nextFrame(ByteBuffer buffer) throws HyracksDataException { |
| accessor.reset(buffer); |
| int tupleCount = accessor.getTupleCount(); |
| for (int i = 0; i < tupleCount; i++) { |
| tuple.reset(accessor, i); |
| try { |
| switch (op) { |
| case INSERT: { |
| indexAccessor.insert(tuple); |
| break; |
| } |
| case UPDATE: { |
| indexAccessor.update(tuple); |
| break; |
| } |
| case DELETE: { |
| indexAccessor.delete(tuple); |
| break; |
| } |
| default: { |
| throw new HyracksDataException("Unsupported operation " + op |
| + " in tree index InsertUpdateDelete operator"); |
| } |
| } |
| } catch (HyracksDataException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new HyracksDataException(e); |
| } |
| } |
| // Pass a copy of the frame to next op. |
| System.arraycopy(buffer.array(), 0, writeBuffer.array(), 0, buffer.capacity()); |
| FrameUtils.flushFrame(writeBuffer, writer); |
| } |
| |
| @Override |
| public void close() throws HyracksDataException { |
| try { |
| writer.close(); |
| } finally { |
| treeIndexHelper.deinit(); |
| } |
| } |
| |
| @Override |
| public void fail() throws HyracksDataException { |
| writer.fail(); |
| } |
| } |