| /** |
| * Copyright 2009 The Apache Software Foundation |
| * |
| * 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.regionserver; |
| |
| import java.util.Iterator; |
| import java.util.SortedSet; |
| |
| import org.apache.hadoop.hbase.KeyValue; |
| import org.apache.hadoop.hbase.util.Bytes; |
| |
| import junit.framework.TestCase; |
| |
| public class TestKeyValueSkipListSet extends TestCase { |
| private final KeyValueSkipListSet kvsls = |
| new KeyValueSkipListSet(KeyValue.COMPARATOR); |
| |
| protected void setUp() throws Exception { |
| super.setUp(); |
| this.kvsls.clear(); |
| } |
| |
| public void testAdd() throws Exception { |
| byte [] bytes = Bytes.toBytes(getName()); |
| KeyValue kv = new KeyValue(bytes, bytes, bytes, bytes); |
| this.kvsls.add(kv); |
| assertTrue(this.kvsls.contains(kv)); |
| assertEquals(1, this.kvsls.size()); |
| KeyValue first = this.kvsls.first(); |
| assertTrue(kv.equals(first)); |
| assertTrue(Bytes.equals(kv.getValue(), first.getValue())); |
| // Now try overwritting |
| byte [] overwriteValue = Bytes.toBytes("overwrite"); |
| KeyValue overwrite = new KeyValue(bytes, bytes, bytes, overwriteValue); |
| this.kvsls.add(overwrite); |
| assertEquals(1, this.kvsls.size()); |
| first = this.kvsls.first(); |
| assertTrue(Bytes.equals(overwrite.getValue(), first.getValue())); |
| assertFalse(Bytes.equals(overwrite.getValue(), kv.getValue())); |
| } |
| |
| public void testIterator() throws Exception { |
| byte [] bytes = Bytes.toBytes(getName()); |
| byte [] value1 = Bytes.toBytes("1"); |
| byte [] value2 = Bytes.toBytes("2"); |
| final int total = 3; |
| for (int i = 0; i < total; i++) { |
| this.kvsls.add(new KeyValue(bytes, bytes, Bytes.toBytes("" + i), value1)); |
| } |
| // Assert that we added 'total' values and that they are in order |
| int count = 0; |
| for (KeyValue kv: this.kvsls) { |
| assertEquals("" + count, Bytes.toString(kv.getQualifier())); |
| assertTrue(Bytes.equals(kv.getValue(), value1)); |
| count++; |
| } |
| assertEquals(total, count); |
| // Now overwrite with a new value. |
| for (int i = 0; i < total; i++) { |
| this.kvsls.add(new KeyValue(bytes, bytes, Bytes.toBytes("" + i), value2)); |
| } |
| // Assert that we added 'total' values and that they are in order and that |
| // we are getting back value2 |
| count = 0; |
| for (KeyValue kv: this.kvsls) { |
| assertEquals("" + count, Bytes.toString(kv.getQualifier())); |
| assertTrue(Bytes.equals(kv.getValue(), value2)); |
| count++; |
| } |
| assertEquals(total, count); |
| } |
| |
| public void testDescendingIterator() throws Exception { |
| byte [] bytes = Bytes.toBytes(getName()); |
| byte [] value1 = Bytes.toBytes("1"); |
| byte [] value2 = Bytes.toBytes("2"); |
| final int total = 3; |
| for (int i = 0; i < total; i++) { |
| this.kvsls.add(new KeyValue(bytes, bytes, Bytes.toBytes("" + i), value1)); |
| } |
| // Assert that we added 'total' values and that they are in order |
| int count = 0; |
| for (Iterator<KeyValue> i = this.kvsls.descendingIterator(); i.hasNext();) { |
| KeyValue kv = i.next(); |
| assertEquals("" + (total - (count + 1)), Bytes.toString(kv.getQualifier())); |
| assertTrue(Bytes.equals(kv.getValue(), value1)); |
| count++; |
| } |
| assertEquals(total, count); |
| // Now overwrite with a new value. |
| for (int i = 0; i < total; i++) { |
| this.kvsls.add(new KeyValue(bytes, bytes, Bytes.toBytes("" + i), value2)); |
| } |
| // Assert that we added 'total' values and that they are in order and that |
| // we are getting back value2 |
| count = 0; |
| for (Iterator<KeyValue> i = this.kvsls.descendingIterator(); i.hasNext();) { |
| KeyValue kv = i.next(); |
| assertEquals("" + (total - (count + 1)), Bytes.toString(kv.getQualifier())); |
| assertTrue(Bytes.equals(kv.getValue(), value2)); |
| count++; |
| } |
| assertEquals(total, count); |
| } |
| |
| public void testHeadTail() throws Exception { |
| byte [] bytes = Bytes.toBytes(getName()); |
| byte [] value1 = Bytes.toBytes("1"); |
| byte [] value2 = Bytes.toBytes("2"); |
| final int total = 3; |
| KeyValue splitter = null; |
| for (int i = 0; i < total; i++) { |
| KeyValue kv = new KeyValue(bytes, bytes, Bytes.toBytes("" + i), value1); |
| if (i == 1) splitter = kv; |
| this.kvsls.add(kv); |
| } |
| SortedSet<KeyValue> tail = this.kvsls.tailSet(splitter); |
| assertEquals(2, tail.size()); |
| SortedSet<KeyValue> head = this.kvsls.headSet(splitter); |
| assertEquals(1, head.size()); |
| // Now ensure that we get back right answer even when we do tail or head. |
| // Now overwrite with a new value. |
| for (int i = 0; i < total; i++) { |
| this.kvsls.add(new KeyValue(bytes, bytes, Bytes.toBytes("" + i), value2)); |
| } |
| tail = this.kvsls.tailSet(splitter); |
| assertTrue(Bytes.equals(tail.first().getValue(), value2)); |
| head = this.kvsls.headSet(splitter); |
| assertTrue(Bytes.equals(head.first().getValue(), value2)); |
| } |
| } |