| /* |
| * 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.hyracks.dataflow.common.util; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.DataInput; |
| import java.io.DataInputStream; |
| import java.io.DataOutput; |
| |
| import edu.uci.ics.hyracks.api.dataflow.value.ISerializerDeserializer; |
| import edu.uci.ics.hyracks.api.exceptions.HyracksDataException; |
| import edu.uci.ics.hyracks.dataflow.common.comm.io.ArrayTupleBuilder; |
| import edu.uci.ics.hyracks.dataflow.common.comm.io.ArrayTupleReference; |
| import edu.uci.ics.hyracks.dataflow.common.data.accessors.ITupleReference; |
| import edu.uci.ics.hyracks.dataflow.common.data.marshalling.DoubleSerializerDeserializer; |
| import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer; |
| |
| @SuppressWarnings("rawtypes") |
| public class TupleUtils { |
| @SuppressWarnings("unchecked") |
| public static void createTuple(ArrayTupleBuilder tupleBuilder, ArrayTupleReference tuple, |
| ISerializerDeserializer[] fieldSerdes, final Object... fields) throws HyracksDataException { |
| DataOutput dos = tupleBuilder.getDataOutput(); |
| tupleBuilder.reset(); |
| int numFields = Math.min(tupleBuilder.getFieldEndOffsets().length, fields.length); |
| for (int i = 0; i < numFields; i++) { |
| fieldSerdes[i].serialize(fields[i], dos); |
| tupleBuilder.addFieldEndOffset(); |
| } |
| tuple.reset(tupleBuilder.getFieldEndOffsets(), tupleBuilder.getByteArray()); |
| } |
| |
| public static ITupleReference createTuple(ISerializerDeserializer[] fieldSerdes, final Object... fields) |
| throws HyracksDataException { |
| ArrayTupleBuilder tupleBuilder = new ArrayTupleBuilder(fields.length); |
| ArrayTupleReference tuple = new ArrayTupleReference(); |
| createTuple(tupleBuilder, tuple, fieldSerdes, fields); |
| return tuple; |
| } |
| |
| public static void createIntegerTuple(ArrayTupleBuilder tupleBuilder, ArrayTupleReference tuple, |
| final int... fields) throws HyracksDataException { |
| DataOutput dos = tupleBuilder.getDataOutput(); |
| tupleBuilder.reset(); |
| for (final int i : fields) { |
| IntegerSerializerDeserializer.INSTANCE.serialize(i, dos); |
| tupleBuilder.addFieldEndOffset(); |
| } |
| tuple.reset(tupleBuilder.getFieldEndOffsets(), tupleBuilder.getByteArray()); |
| } |
| |
| public static ITupleReference createIntegerTuple(final int... fields) throws HyracksDataException { |
| ArrayTupleBuilder tupleBuilder = new ArrayTupleBuilder(fields.length); |
| ArrayTupleReference tuple = new ArrayTupleReference(); |
| createIntegerTuple(tupleBuilder, tuple, fields); |
| return tuple; |
| } |
| |
| public static void createDoubleTuple(ArrayTupleBuilder tupleBuilder, ArrayTupleReference tuple, |
| final double... fields) throws HyracksDataException { |
| DataOutput dos = tupleBuilder.getDataOutput(); |
| tupleBuilder.reset(); |
| for (final double i : fields) { |
| DoubleSerializerDeserializer.INSTANCE.serialize(i, dos); |
| tupleBuilder.addFieldEndOffset(); |
| } |
| tuple.reset(tupleBuilder.getFieldEndOffsets(), tupleBuilder.getByteArray()); |
| } |
| |
| public static ITupleReference createDoubleTuple(final double... fields) throws HyracksDataException { |
| ArrayTupleBuilder tupleBuilder = new ArrayTupleBuilder(fields.length); |
| ArrayTupleReference tuple = new ArrayTupleReference(); |
| createDoubleTuple(tupleBuilder, tuple, fields); |
| return tuple; |
| } |
| |
| public static String printTuple(ITupleReference tuple, ISerializerDeserializer[] fields) |
| throws HyracksDataException { |
| StringBuilder strBuilder = new StringBuilder(); |
| int numPrintFields = Math.min(tuple.getFieldCount(), fields.length); |
| for (int i = 0; i < numPrintFields; i++) { |
| ByteArrayInputStream inStream = new ByteArrayInputStream(tuple.getFieldData(i), tuple.getFieldStart(i), |
| tuple.getFieldLength(i)); |
| DataInput dataIn = new DataInputStream(inStream); |
| Object o = fields[i].deserialize(dataIn); |
| strBuilder.append(o.toString()); |
| if (i != fields.length - 1) { |
| strBuilder.append(" "); |
| } |
| } |
| return strBuilder.toString(); |
| } |
| |
| public static Object[] deserializeTuple(ITupleReference tuple, ISerializerDeserializer[] fields) |
| throws HyracksDataException { |
| int numFields = Math.min(tuple.getFieldCount(), fields.length); |
| Object[] objs = new Object[numFields]; |
| for (int i = 0; i < numFields; i++) { |
| ByteArrayInputStream inStream = new ByteArrayInputStream(tuple.getFieldData(i), tuple.getFieldStart(i), |
| tuple.getFieldLength(i)); |
| DataInput dataIn = new DataInputStream(inStream); |
| objs[i] = fields[i].deserialize(dataIn); |
| } |
| return objs; |
| } |
| |
| public static ITupleReference copyTuple(ITupleReference tuple) throws HyracksDataException { |
| ArrayTupleBuilder tupleBuilder = new ArrayTupleBuilder(tuple.getFieldCount()); |
| for (int i = 0; i < tuple.getFieldCount(); i++) { |
| tupleBuilder.addField(tuple.getFieldData(i), tuple.getFieldStart(i), tuple.getFieldLength(i)); |
| } |
| ArrayTupleReference tupleCopy = new ArrayTupleReference(); |
| tupleCopy.reset(tupleBuilder.getFieldEndOffsets(), tupleBuilder.getByteArray()); |
| return tupleCopy; |
| } |
| |
| public static void copyTuple(ArrayTupleBuilder tupleBuilder, ITupleReference tuple, int numFields) throws HyracksDataException { |
| tupleBuilder.reset(); |
| for (int i = 0; i < numFields; i++) { |
| tupleBuilder.addField(tuple.getFieldData(i), tuple.getFieldStart(i), tuple.getFieldLength(i)); |
| } |
| } |
| } |