| /** |
| * 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.filter; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.IOException; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.testclassification.FilterTests; |
| import org.apache.hadoop.hbase.testclassification.SmallTests; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| /** |
| * Tests for the page filter |
| */ |
| @Category({FilterTests.class, SmallTests.class}) |
| public class TestPageFilter { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestPageFilter.class); |
| |
| static final int ROW_LIMIT = 3; |
| |
| /** |
| * test page size filter |
| * @throws Exception |
| */ |
| @Test |
| public void testPageSize() throws Exception { |
| Filter f = new PageFilter(ROW_LIMIT); |
| pageSizeTests(f); |
| } |
| |
| /** |
| * Test filter serialization |
| * @throws Exception |
| */ |
| @Test |
| public void testSerialization() throws Exception { |
| Filter f = new PageFilter(ROW_LIMIT); |
| // Decompose mainFilter to bytes. |
| byte[] buffer = f.toByteArray(); |
| // Recompose mainFilter. |
| Filter newFilter = PageFilter.parseFrom(buffer); |
| |
| // Ensure the serialization preserved the filter by running a full test. |
| pageSizeTests(newFilter); |
| } |
| |
| private void pageSizeTests(Filter f) throws Exception { |
| testFiltersBeyondPageSize(f, ROW_LIMIT); |
| } |
| |
| private void testFiltersBeyondPageSize(final Filter f, final int pageSize) throws IOException { |
| int count = 0; |
| for (int i = 0; i < (pageSize * 2); i++) { |
| boolean filterOut = f.filterRow(); |
| |
| if(filterOut) { |
| break; |
| } else { |
| count++; |
| } |
| |
| // If at last row, should tell us to skip all remaining |
| if(count == pageSize) { |
| assertTrue(f.filterAllRemaining()); |
| } else { |
| assertFalse(f.filterAllRemaining()); |
| } |
| |
| } |
| assertEquals(pageSize, count); |
| } |
| |
| } |
| |