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/tags/release-0.1-rc2/hive/external/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/primitive/WritableVoidObjectInspector.java

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Java | 39 lines | 15 code | 4 blank | 20 comment | 0 complexity | 507ea75ee4d718d2fe94803b98846fda MD5 | raw file
 1/**
 2 * Licensed to the Apache Software Foundation (ASF) under one
 3 * or more contributor license agreements.  See the NOTICE file
 4 * distributed with this work for additional information
 5 * regarding copyright ownership.  The ASF licenses this file
 6 * to you under the Apache License, Version 2.0 (the
 7 * "License"); you may not use this file except in compliance
 8 * with the License.  You may obtain a copy of the License at
 9 *
10 *     http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18package org.apache.hadoop.hive.serde2.objectinspector.primitive;
19
20/**
21 * A WritableVoidObjectInspector inspects a NullWritable Object.
22 */
23public class WritableVoidObjectInspector extends
24    AbstractPrimitiveWritableObjectInspector implements VoidObjectInspector {
25
26  WritableVoidObjectInspector() {
27    super(PrimitiveObjectInspectorUtils.voidTypeEntry);
28  }
29
30  @Override
31  public Object copyObject(Object o) {
32    return o;
33  }
34
35  @Override
36  public Object getPrimitiveJavaObject(Object o) {
37    throw new RuntimeException("Internal error: cannot create Void object.");
38  }
39}