org.apache.hadoop.hive.serde2.lazy.LazyBoolean Maven / Gradle / Ivy
/*
* 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;
import org.apache.hadoop.hive.serde2.lazy.objectinspector.primitive.LazyBooleanObjectInspector;
import org.apache.hadoop.io.BooleanWritable;
/**
* LazyObject for storing a value of boolean.
*
*
* Part of the code is adapted from Apache Harmony Project.
*
* As with the specification, this implementation relied on code laid out in Henry S. Warren, Jr.'s Hacker's
* Delight, (Addison Wesley, 2002) as well as The Aggregate's Magic Algorithms.
*
*
*/
public class LazyBoolean extends
LazyPrimitive {
public LazyBoolean(LazyBooleanObjectInspector oi) {
super(oi);
data = new BooleanWritable();
}
public LazyBoolean(LazyBoolean copy) {
super(copy);
data = new BooleanWritable(copy.data.get());
}
@Override
public void init(ByteArrayRef bytes, int start, int length) {
if (length == 4 && Character.toUpperCase(bytes.getData()[start]) == 'T'
&& Character.toUpperCase(bytes.getData()[start + 1]) == 'R'
&& Character.toUpperCase(bytes.getData()[start + 2]) == 'U'
&& Character.toUpperCase(bytes.getData()[start + 3]) == 'E') {
data.set(true);
isNull = false;
} else if (length == 5
&& Character.toUpperCase(bytes.getData()[start]) == 'F'
&& Character.toUpperCase(bytes.getData()[start + 1]) == 'A'
&& Character.toUpperCase(bytes.getData()[start + 2]) == 'L'
&& Character.toUpperCase(bytes.getData()[start + 3]) == 'S'
&& Character.toUpperCase(bytes.getData()[start + 4]) == 'E') {
data.set(false);
isNull = false;
} else {
if (oi.isExtendedLiteral()) {
if (length == 1) {
byte c = bytes.getData()[start];
if (c == '1' || c == 't' || c == 'T') {
data.set(true);
isNull = false;
} else if (c == '0' || c == 'f' || c == 'F') {
data.set(false);
isNull = false;
} else {
isNull = true;
}
}
} else {
isNull = true;
logExceptionMessage(bytes, start, length, "BOOLEAN");
}
}
}
}