| /** |
| * 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.hadoop.record; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.io.WritableComparable; |
| |
| /** |
| * Abstract class that is extended by generated classes. |
| * |
| * @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>. |
| */ |
| @Deprecated |
| @InterfaceAudience.Public |
| @InterfaceStability.Stable |
| public abstract class Record implements WritableComparable, Cloneable { |
| |
| /** |
| * Serialize a record with tag (ususally field name) |
| * @param rout Record output destination |
| * @param tag record tag (Used only in tagged serialization e.g. XML) |
| */ |
| public abstract void serialize(RecordOutput rout, String tag) |
| throws IOException; |
| |
| /** |
| * Deserialize a record with a tag (usually field name) |
| * @param rin Record input source |
| * @param tag Record tag (Used only in tagged serialization e.g. XML) |
| */ |
| public abstract void deserialize(RecordInput rin, String tag) |
| throws IOException; |
| |
| // inheric javadoc |
| @Override |
| public abstract int compareTo (final Object peer) throws ClassCastException; |
| |
| /** |
| * Serialize a record without a tag |
| * @param rout Record output destination |
| */ |
| public void serialize(RecordOutput rout) throws IOException { |
| this.serialize(rout, ""); |
| } |
| |
| /** |
| * Deserialize a record without a tag |
| * @param rin Record input source |
| */ |
| public void deserialize(RecordInput rin) throws IOException { |
| this.deserialize(rin, ""); |
| } |
| |
| // inherit javadoc |
| @Override |
| public void write(final DataOutput out) throws java.io.IOException { |
| BinaryRecordOutput bout = BinaryRecordOutput.get(out); |
| this.serialize(bout); |
| } |
| |
| // inherit javadoc |
| @Override |
| public void readFields(final DataInput din) throws java.io.IOException { |
| BinaryRecordInput rin = BinaryRecordInput.get(din); |
| this.deserialize(rin); |
| } |
| |
| // inherit javadoc |
| @Override |
| public String toString() { |
| try { |
| ByteArrayOutputStream s = new ByteArrayOutputStream(); |
| CsvRecordOutput a = new CsvRecordOutput(s); |
| this.serialize(a); |
| return new String(s.toByteArray(), "UTF-8"); |
| } catch (Throwable ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| } |