| /* |
| * Copyright 2009-2013 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.pregelix.dataflow.std.util; |
| |
| import edu.uci.ics.hyracks.dataflow.common.comm.io.FrameTupleAccessor; |
| import edu.uci.ics.pregelix.dataflow.std.sort.RawNormalizedKeyComputer; |
| |
| public final class ReferenceEntry { |
| private final int runid; |
| private FrameTupleAccessor acccessor; |
| private int tupleIndex; |
| private int[] tPointers; |
| private boolean exhausted = false; |
| |
| public ReferenceEntry(int runid, FrameTupleAccessor fta, int tupleIndex, int[] keyFields, |
| RawNormalizedKeyComputer nmkComputer) { |
| super(); |
| this.runid = runid; |
| this.acccessor = fta; |
| this.tPointers = new int[2 + 2 * keyFields.length]; |
| if (fta != null) { |
| initTPointer(fta, tupleIndex, keyFields, nmkComputer); |
| } |
| } |
| |
| public int getRunid() { |
| return runid; |
| } |
| |
| public FrameTupleAccessor getAccessor() { |
| return acccessor; |
| } |
| |
| public void setAccessor(FrameTupleAccessor fta) { |
| this.acccessor = fta; |
| } |
| |
| public int[] getTPointers() { |
| return tPointers; |
| } |
| |
| public int getTupleIndex() { |
| return tupleIndex; |
| } |
| |
| public int getNormalizedKey() { |
| return tPointers[0]; |
| } |
| |
| public int getNormalizedKey4() { |
| return tPointers[1]; |
| } |
| |
| public void setTupleIndex(int tupleIndex, int[] keyFields, RawNormalizedKeyComputer nmkComputer) { |
| initTPointer(acccessor, tupleIndex, keyFields, nmkComputer); |
| } |
| |
| public void setExhausted() { |
| this.exhausted = true; |
| } |
| |
| public boolean isExhausted() { |
| return this.exhausted; |
| } |
| |
| private void initTPointer(FrameTupleAccessor fta, int tupleIndex, int[] keyFields, |
| RawNormalizedKeyComputer nmkComputer) { |
| this.tupleIndex = tupleIndex; |
| byte[] b1 = fta.getBuffer().array(); |
| for (int f = 0; f < keyFields.length; ++f) { |
| int fIdx = keyFields[f]; |
| tPointers[2 * f + 2] = fta.getTupleStartOffset(tupleIndex) + fta.getFieldSlotsLength() |
| + fta.getFieldStartOffset(tupleIndex, fIdx); |
| tPointers[2 * f + 3] = fta.getFieldEndOffset(tupleIndex, fIdx) - fta.getFieldStartOffset(tupleIndex, fIdx); |
| if (f == 0) { |
| tPointers[0] = nmkComputer == null ? 0 : nmkComputer.normalize(b1, tPointers[2], tPointers[3]); |
| tPointers[1] = nmkComputer == null ? 0 : nmkComputer.normalize4(b1, tPointers[2], tPointers[3]); |
| } |
| } |
| } |
| } |