/**
* 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.hbase.types;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import org.apache.hadoop.hbase.SmallTests;
import org.apache.hadoop.hbase.util.Order;
import org.apache.hadoop.hbase.util.PositionedByteRange;
import org.apache.hadoop.hbase.util.SimplePositionedMutableByteRange;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category(SmallTests.class)
public class TestUnion2 {
/**
* An example <code>Union</code>
*/
private static class SampleUnion1 extends Union2<Integer, String> {
private static final byte IS_INTEGER = 0x00;
private static final byte IS_STRING = 0x01;
public SampleUnion1() {
super(new RawInteger(), new RawStringTerminated(Order.DESCENDING, "."));
}
@Override
public int skip(PositionedByteRange src) {
switch (src.get()) {
case IS_INTEGER:
return 1 + typeA.skip(src);
case IS_STRING:
return 1 + typeB.skip(src);
default:
throw new IllegalArgumentException("Unrecognized encoding format.");
}
}
@Override
public Object decode(PositionedByteRange src) {
switch (src.get()) {
case IS_INTEGER:
return typeA.decode(src);
case IS_STRING:
return typeB.decode(src);
default:
throw new IllegalArgumentException("Unrecognized encoding format.");
}
}
@Override
public int encodedLength(Object val) {
Integer i = null;
String s = null;
try {
i = (Integer) val;
} catch (ClassCastException e) {}
try {
s = (String) val;
} catch (ClassCastException e) {}
if (null != i) return 1 + typeA.encodedLength(i);
if (null != s) return 1 + typeB.encodedLength(s);
throw new IllegalArgumentException("val is not a valid member of this union.");
}
@Override
public int encode(PositionedByteRange dst, Object val) {
Integer i = null;
String s = null;
try {
i = (Integer) val;
} catch (ClassCastException e) {}
try {
s = (String) val;
} catch (ClassCastException e) {}
if (null != i) {
dst.put(IS_INTEGER);
return 1 + typeA.encode(dst, i);
} else if (null != s) {
dst.put(IS_STRING);
return 1 + typeB.encode(dst, s);
}
else
throw new IllegalArgumentException("val is not of a supported type.");
}
}
@Test
public void testEncodeDecode() {
Integer intVal = Integer.valueOf(10);
String strVal = "hello";
PositionedByteRange buff = new SimplePositionedMutableByteRange(10);
SampleUnion1 type = new SampleUnion1();
type.encode(buff, intVal);
buff.setPosition(0);
assertTrue(0 == intVal.compareTo(type.decodeA(buff)));
buff.setPosition(0);
type.encode(buff, strVal);
buff.setPosition(0);
assertTrue(0 == strVal.compareTo(type.decodeB(buff)));
}
@Test
public void testSkip() {
Integer intVal = Integer.valueOf(10);
String strVal = "hello";
PositionedByteRange buff = new SimplePositionedMutableByteRange(10);
SampleUnion1 type = new SampleUnion1();
int len = type.encode(buff, intVal);
buff.setPosition(0);
assertEquals(len, type.skip(buff));
buff.setPosition(0);
len = type.encode(buff, strVal);
buff.setPosition(0);
assertEquals(len, type.skip(buff));
}
}