| /* |
| * 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.io; |
| |
| import org.apache.giraph.utils.ExtendedDataInput; |
| import org.apache.giraph.utils.Factory; |
| import org.apache.hadoop.io.Writable; |
| |
| import java.io.DataOutput; |
| |
| /** |
| * Provides both DataOutput which we can write to and DataInputs which are |
| * going to read data which was written to DataOutput. |
| */ |
| public abstract class DataInputOutput implements |
| Writable, Factory<ExtendedDataInput> { |
| /** |
| * Get DataOutput to write to |
| * |
| * @return DataOutput which we can write to |
| */ |
| public abstract DataOutput getDataOutput(); |
| |
| /** |
| * Create DataInput which reads data from underlying DataOutput |
| * |
| * @return DataInput |
| */ |
| public abstract ExtendedDataInput createDataInput(); |
| |
| @Override |
| public ExtendedDataInput create() { |
| return createDataInput(); |
| } |
| } |