| /** |
| * 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.gora.util; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.Map.Entry; |
| import java.util.Properties; |
| |
| import org.apache.hadoop.io.MapWritable; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.io.Writable; |
| |
| /** |
| * An utility class for {@link Writable} related functionality. |
| */ |
| public class WritableUtils { |
| private WritableUtils() { |
| // prevents instantiation |
| } |
| |
| |
| public static final void writeProperties(DataOutput out, Properties props) throws IOException { |
| MapWritable propsWritable = new MapWritable(); |
| for (Entry<Object, Object> prop : props.entrySet()) { |
| Writable key = new Text(prop.getKey().toString()); |
| Writable value = new Text(prop.getValue().toString()); |
| propsWritable.put(key,value); |
| } |
| propsWritable.write(out); |
| } |
| |
| public static final Properties readProperties(DataInput in) throws IOException { |
| Properties props = new Properties(); |
| MapWritable propsWritable = new MapWritable(); |
| propsWritable.readFields(in); |
| for (Entry<Writable, Writable> prop : propsWritable.entrySet()) { |
| String key = prop.getKey().toString(); |
| String value = prop.getValue().toString(); |
| props.put(key,value); |
| } |
| return props; |
| } |
| |
| } |