| /* |
| * 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.giraph.utils; |
| |
| import org.apache.giraph.conf.ImmutableClassesGiraphConfiguration; |
| import org.apache.hadoop.io.WritableComparable; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import static org.apache.giraph.utils.ByteUtils.SIZE_OF_BYTE; |
| import static org.apache.giraph.utils.ByteUtils.SIZE_OF_INT; |
| |
| /** |
| * Partial implementation of vertexIdData |
| * |
| * @param <I> vertexId type parameter |
| * @param <T> vertexData type parameter |
| */ |
| @SuppressWarnings("unchecked") |
| public abstract class AbstractVertexIdData<I extends WritableComparable, T> |
| implements VertexIdData<I, T> { |
| /** Extended data output */ |
| protected ExtendedDataOutput extendedDataOutput; |
| /** Configuration */ |
| private ImmutableClassesGiraphConfiguration<I, ?, ?> configuration; |
| |
| @Override |
| public void initialize() { |
| extendedDataOutput = getConf().createExtendedDataOutput(); |
| } |
| |
| @Override |
| public void initialize(int expectedSize) { |
| extendedDataOutput = getConf().createExtendedDataOutput(expectedSize); |
| } |
| |
| @Override |
| public void add(I vertexId, T data) { |
| try { |
| vertexId.write(extendedDataOutput); |
| writeData(extendedDataOutput, data); |
| } catch (IOException e) { |
| throw new IllegalStateException("add: IOException", e); |
| } |
| } |
| |
| @Override |
| public void add(byte[] serializedId, int idPos, T data) { |
| try { |
| extendedDataOutput.write(serializedId, 0, idPos); |
| writeData(extendedDataOutput, data); |
| } catch (IOException e) { |
| throw new IllegalStateException("add: IOException", e); |
| } |
| } |
| |
| @Override |
| public int getSize() { |
| return extendedDataOutput.getPos(); |
| } |
| |
| |
| @Override |
| public int getSerializedSize() { |
| return SIZE_OF_BYTE + SIZE_OF_INT + getSize(); |
| } |
| |
| |
| @Override |
| public boolean isEmpty() { |
| return extendedDataOutput.getPos() == 0; |
| } |
| |
| |
| @Override |
| public void clear() { |
| extendedDataOutput.reset(); |
| } |
| |
| @Override |
| public void setConf(ImmutableClassesGiraphConfiguration configuration) { |
| this.configuration = configuration; |
| } |
| |
| @Override |
| public ImmutableClassesGiraphConfiguration<I, ?, ?> getConf() { |
| return configuration; |
| } |
| |
| @Override |
| public ByteStructVertexIdDataIterator<I, T> getVertexIdDataIterator() { |
| return new ByteStructVertexIdDataIterator<>(this); |
| } |
| |
| @Override |
| public void write(DataOutput output) throws IOException { |
| throw new UnsupportedOperationException("not supported"); |
| } |
| |
| @Override |
| public void readFields(DataInput dataInput) throws IOException { |
| throw new UnsupportedOperationException("not supported"); |
| } |
| } |