/tags/release-0.1-rc2/hive/external/serde/src/java/org/apache/hadoop/hive/serde2/lazy/objectinspector/LazyUnionObjectInspector.java
Java | 130 lines | 86 code | 20 blank | 24 comment | 4 complexity | 250697487d926bccdabdb34d53080c6c MD5 | raw file
Possible License(s): Apache-2.0, BSD-3-Clause, JSON, CPL-1.0
- /**
- * 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.hive.serde2.lazy.objectinspector;
- import java.util.ArrayList;
- import java.util.List;
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
- import org.apache.hadoop.hive.serde2.lazy.LazyUnion;
- import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
- import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils;
- import org.apache.hadoop.hive.serde2.objectinspector.UnionObjectInspector;
- import org.apache.hadoop.io.Text;
- /**
- * LazyUnionObjectInspector works on union data that is stored in LazyUnion.
- *
- * Always use the {@link LazyObjectInspectorFactory} to create new
- * ObjectInspector objects, instead of directly creating an instance of this
- * class.
- */
- public class LazyUnionObjectInspector implements UnionObjectInspector {
- public static final Log LOG = LogFactory
- .getLog(LazyUnionObjectInspector.class.getName());
- protected List<ObjectInspector> ois;
- @Override
- public String getTypeName() {
- return ObjectInspectorUtils.getStandardUnionTypeName(this);
- }
- byte separator;
- Text nullSequence;
- boolean escaped;
- byte escapeChar;
- protected LazyUnionObjectInspector(
- List<ObjectInspector> ois, byte separator,
- Text nullSequence, boolean escaped,
- byte escapeChar) {
- init(ois, separator,
- nullSequence, escaped, escapeChar);
- }
- protected void init(
- List<ObjectInspector> ois, byte separator,
- Text nullSequence, boolean escaped,
- byte escapeChar) {
- this.separator = separator;
- this.nullSequence = nullSequence;
- this.escaped = escaped;
- this.escapeChar = escapeChar;
- this.ois = new ArrayList<ObjectInspector>();
- this.ois.addAll(ois);
- }
- protected LazyUnionObjectInspector(List<ObjectInspector> ois,
- byte separator, Text nullSequence) {
- init(ois, separator, nullSequence);
- }
- protected void init(List<ObjectInspector> ois, byte separator,
- Text nullSequence) {
- this.separator = separator;
- this.nullSequence = nullSequence;
- this.ois = new ArrayList<ObjectInspector>();
- this.ois.addAll(ois);
- }
- @Override
- public final Category getCategory() {
- return Category.UNION;
- }
- public byte getSeparator() {
- return separator;
- }
- public Text getNullSequence() {
- return nullSequence;
- }
- public boolean isEscaped() {
- return escaped;
- }
- public byte getEscapeChar() {
- return escapeChar;
- }
- @Override
- public Object getField(Object data) {
- if (data == null) {
- return null;
- }
- return ((LazyUnion) data).getField();
- }
- @Override
- public List<ObjectInspector> getObjectInspectors() {
- return ois;
- }
- @Override
- public byte getTag(Object data) {
- if (data == null) {
- return -1;
- }
- return ((LazyUnion) data).getTag();
- }
- }