001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.filter;
019
020import static org.junit.Assert.assertEquals;
021import static org.junit.Assert.assertFalse;
022import static org.junit.Assert.assertTrue;
023
024import java.nio.ByteBuffer;
025import org.apache.hadoop.hbase.ByteBufferKeyValue;
026import org.apache.hadoop.hbase.Cell;
027import org.apache.hadoop.hbase.HBaseClassTestRule;
028import org.apache.hadoop.hbase.KeyValue;
029import org.apache.hadoop.hbase.PrivateCellUtil;
030import org.apache.hadoop.hbase.testclassification.MiscTests;
031import org.apache.hadoop.hbase.testclassification.SmallTests;
032import org.apache.hadoop.hbase.util.Bytes;
033import org.junit.ClassRule;
034import org.junit.Test;
035import org.junit.experimental.categories.Category;
036
037@Category({MiscTests.class, SmallTests.class})
038public class TestComparators {
039
040  @ClassRule
041  public static final HBaseClassTestRule CLASS_RULE =
042      HBaseClassTestRule.forClass(TestComparators.class);
043
044  @Test
045  public void testCellFieldsCompare() throws Exception {
046    byte[] r0 = Bytes.toBytes("row0");
047    byte[] r1 = Bytes.toBytes("row1");
048    byte[] r2 = Bytes.toBytes("row2");
049    byte[] f = Bytes.toBytes("cf1");
050    byte[] q1 = Bytes.toBytes("qual1");
051    byte[] q2 = Bytes.toBytes("qual2");
052    byte[] q3 = Bytes.toBytes("r");
053    long l1 = 1234L;
054    byte[] v1 = Bytes.toBytes(l1);
055    long l2 = 2000L;
056    byte[] v2 = Bytes.toBytes(l2);
057    // Row compare
058    KeyValue kv = new KeyValue(r1, f, q1, v1);
059    ByteBuffer buffer = ByteBuffer.wrap(kv.getBuffer());
060    Cell bbCell = new ByteBufferKeyValue(buffer, 0, buffer.remaining());
061    ByteArrayComparable comparable = new BinaryComparator(r1);
062    assertEquals(0, PrivateCellUtil.compareRow(bbCell, comparable));
063    assertEquals(0, PrivateCellUtil.compareRow(kv, comparable));
064    kv = new KeyValue(r0, f, q1, v1);
065    buffer = ByteBuffer.wrap(kv.getBuffer());
066    bbCell = new ByteBufferKeyValue(buffer, 0, buffer.remaining());
067    assertTrue(PrivateCellUtil.compareRow(bbCell, comparable) > 0);
068    assertTrue(PrivateCellUtil.compareRow(kv, comparable) > 0);
069    kv = new KeyValue(r2, f, q1, v1);
070    buffer = ByteBuffer.wrap(kv.getBuffer());
071    bbCell = new ByteBufferKeyValue(buffer, 0, buffer.remaining());
072    assertTrue(PrivateCellUtil.compareRow(bbCell, comparable) < 0);
073    assertTrue(PrivateCellUtil.compareRow(kv, comparable) < 0);
074    // Qualifier compare
075    comparable = new BinaryPrefixComparator(Bytes.toBytes("qual"));
076    assertEquals(0, PrivateCellUtil.compareQualifier(bbCell, comparable));
077    assertEquals(0, PrivateCellUtil.compareQualifier(kv, comparable));
078    kv = new KeyValue(r2, f, q2, v1);
079    buffer = ByteBuffer.wrap(kv.getBuffer());
080    bbCell = new ByteBufferKeyValue(buffer, 0, buffer.remaining());
081    assertEquals(0, PrivateCellUtil.compareQualifier(bbCell, comparable));
082    assertEquals(0, PrivateCellUtil.compareQualifier(kv, comparable));
083    kv = new KeyValue(r2, f, q3, v1);
084    buffer = ByteBuffer.wrap(kv.getBuffer());
085    bbCell = new ByteBufferKeyValue(buffer, 0, buffer.remaining());
086    assertTrue(PrivateCellUtil.compareQualifier(bbCell, comparable) < 0);
087    assertTrue(PrivateCellUtil.compareQualifier(kv, comparable) < 0);
088    // Value compare
089    comparable = new LongComparator(l1);
090    assertEquals(0, PrivateCellUtil.compareValue(bbCell, comparable));
091    assertEquals(0, PrivateCellUtil.compareValue(kv, comparable));
092    kv = new KeyValue(r1, f, q1, v2);
093    buffer = ByteBuffer.wrap(kv.getBuffer());
094    bbCell = new ByteBufferKeyValue(buffer, 0, buffer.remaining());
095    assertTrue(PrivateCellUtil.compareValue(bbCell, comparable) < 0);
096    assertTrue(PrivateCellUtil.compareValue(kv, comparable) < 0);
097    // Family compare
098    comparable = new SubstringComparator("cf");
099    assertEquals(0, PrivateCellUtil.compareFamily(bbCell, comparable));
100    assertEquals(0, PrivateCellUtil.compareFamily(kv, comparable));
101    // Qualifier starts with
102    kv = new KeyValue(r1, f, q1, v2);
103    assertTrue(PrivateCellUtil.qualifierStartsWith(kv, Bytes.toBytes("q")));
104    assertTrue(PrivateCellUtil.qualifierStartsWith(kv, q1));
105    assertFalse(PrivateCellUtil.qualifierStartsWith(kv, q2));
106    assertFalse(PrivateCellUtil.qualifierStartsWith(kv, Bytes.toBytes("longerthanthequalifier")));
107  }
108
109}