/**
*
* 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 java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.util.regex.Pattern;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.SmallTests;
import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import static org.junit.Assert.*;
/**
* Tests the value filter
*/
@Category(SmallTests.class)
public class TestSingleColumnValueFilter {
private static final byte[] ROW = Bytes.toBytes("test");
private static final byte[] COLUMN_FAMILY = Bytes.toBytes("test");
private static final byte [] COLUMN_QUALIFIER = Bytes.toBytes("foo");
private static final byte[] VAL_1 = Bytes.toBytes("a");
private static final byte[] VAL_2 = Bytes.toBytes("ab");
private static final byte[] VAL_3 = Bytes.toBytes("abc");
private static final byte[] VAL_4 = Bytes.toBytes("abcd");
private static final byte[] FULLSTRING_1 =
Bytes.toBytes("The quick brown fox jumps over the lazy dog.");
private static final byte[] FULLSTRING_2 =
Bytes.toBytes("The slow grey fox trips over the lazy dog.");
private static final String QUICK_SUBSTR = "quick";
private static final String QUICK_REGEX = ".+quick.+";
private static final Pattern QUICK_PATTERN = Pattern.compile("QuIcK", Pattern.CASE_INSENSITIVE | Pattern.DOTALL);
Filter basicFilter;
Filter substrFilter;
Filter regexFilter;
Filter regexPatternFilter;
@Before
public void setUp() throws Exception {
basicFilter = basicFilterNew();
substrFilter = substrFilterNew();
regexFilter = regexFilterNew();
regexPatternFilter = regexFilterNew(QUICK_PATTERN);
}
private Filter basicFilterNew() {
return new SingleColumnValueFilter(COLUMN_FAMILY, COLUMN_QUALIFIER,
CompareOp.GREATER_OR_EQUAL, VAL_2);
}
private Filter substrFilterNew() {
return new SingleColumnValueFilter(COLUMN_FAMILY, COLUMN_QUALIFIER,
CompareOp.EQUAL,
new SubstringComparator(QUICK_SUBSTR));
}
private Filter regexFilterNew() {
return new SingleColumnValueFilter(COLUMN_FAMILY, COLUMN_QUALIFIER,
CompareOp.EQUAL,
new RegexStringComparator(QUICK_REGEX));
}
private Filter regexFilterNew(Pattern pattern) {
return new SingleColumnValueFilter(COLUMN_FAMILY, COLUMN_QUALIFIER,
CompareOp.EQUAL,
new RegexStringComparator(pattern.pattern(), pattern.flags()));
}
private void basicFilterTests(SingleColumnValueFilter filter)
throws Exception {
KeyValue kv = new KeyValue(ROW, COLUMN_FAMILY, COLUMN_QUALIFIER, VAL_2);
assertTrue("basicFilter1", filter.filterKeyValue(kv) == Filter.ReturnCode.INCLUDE);
kv = new KeyValue(ROW, COLUMN_FAMILY, COLUMN_QUALIFIER, VAL_3);
assertTrue("basicFilter2", filter.filterKeyValue(kv) == Filter.ReturnCode.INCLUDE);
kv = new KeyValue(ROW, COLUMN_FAMILY, COLUMN_QUALIFIER, VAL_4);
assertTrue("basicFilter3", filter.filterKeyValue(kv) == Filter.ReturnCode.INCLUDE);
assertFalse("basicFilterNotNull", filter.filterRow());
filter.reset();
kv = new KeyValue(ROW, COLUMN_FAMILY, COLUMN_QUALIFIER, VAL_1);
assertTrue("basicFilter4", filter.filterKeyValue(kv) == Filter.ReturnCode.NEXT_ROW);
kv = new KeyValue(ROW, COLUMN_FAMILY, COLUMN_QUALIFIER, VAL_2);
assertTrue("basicFilter4", filter.filterKeyValue(kv) == Filter.ReturnCode.NEXT_ROW);
assertFalse("basicFilterAllRemaining", filter.filterAllRemaining());
assertTrue("basicFilterNotNull", filter.filterRow());
filter.reset();
filter.setLatestVersionOnly(false);
kv = new KeyValue(ROW, COLUMN_FAMILY, COLUMN_QUALIFIER, VAL_1);
assertTrue("basicFilter5", filter.filterKeyValue(kv) == Filter.ReturnCode.INCLUDE);
kv = new KeyValue(ROW, COLUMN_FAMILY, COLUMN_QUALIFIER, VAL_2);
assertTrue("basicFilter5", filter.filterKeyValue(kv) == Filter.ReturnCode.INCLUDE);
assertFalse("basicFilterNotNull", filter.filterRow());
}
private void substrFilterTests(Filter filter)
throws Exception {
KeyValue kv = new KeyValue(ROW, COLUMN_FAMILY, COLUMN_QUALIFIER,
FULLSTRING_1);
assertTrue("substrTrue",
filter.filterKeyValue(kv) == Filter.ReturnCode.INCLUDE);
kv = new KeyValue(ROW, COLUMN_FAMILY, COLUMN_QUALIFIER,
FULLSTRING_2);
assertTrue("substrFalse", filter.filterKeyValue(kv) == Filter.ReturnCode.INCLUDE);
assertFalse("substrFilterAllRemaining", filter.filterAllRemaining());
assertFalse("substrFilterNotNull", filter.filterRow());
}
private void regexFilterTests(Filter filter)
throws Exception {
KeyValue kv = new KeyValue(ROW, COLUMN_FAMILY, COLUMN_QUALIFIER,
FULLSTRING_1);
assertTrue("regexTrue",
filter.filterKeyValue(kv) == Filter.ReturnCode.INCLUDE);
kv = new KeyValue(ROW, COLUMN_FAMILY, COLUMN_QUALIFIER,
FULLSTRING_2);
assertTrue("regexFalse", filter.filterKeyValue(kv) == Filter.ReturnCode.INCLUDE);
assertFalse("regexFilterAllRemaining", filter.filterAllRemaining());
assertFalse("regexFilterNotNull", filter.filterRow());
}
private void regexPatternFilterTests(Filter filter)
throws Exception {
KeyValue kv = new KeyValue(ROW, COLUMN_FAMILY, COLUMN_QUALIFIER,
FULLSTRING_1);
assertTrue("regexTrue",
filter.filterKeyValue(kv) == Filter.ReturnCode.INCLUDE);
assertFalse("regexFilterAllRemaining", filter.filterAllRemaining());
assertFalse("regexFilterNotNull", filter.filterRow());
}
private Filter serializationTest(Filter filter)
throws Exception {
// Decompose filter to bytes.
byte[] buffer = filter.toByteArray();
// Recompose filter.
Filter newFilter = SingleColumnValueFilter.parseFrom(buffer);
return newFilter;
}
/**
* Tests identification of the stop row
* @throws Exception
*/
@Test
public void testStop() throws Exception {
basicFilterTests((SingleColumnValueFilter)basicFilter);
substrFilterTests(substrFilter);
regexFilterTests(regexFilter);
regexPatternFilterTests(regexPatternFilter);
}
/**
* Tests serialization
* @throws Exception
*/
@Test
public void testSerialization() throws Exception {
Filter newFilter = serializationTest(basicFilter);
basicFilterTests((SingleColumnValueFilter)newFilter);
newFilter = serializationTest(substrFilter);
substrFilterTests(newFilter);
newFilter = serializationTest(regexFilter);
regexFilterTests(newFilter);
newFilter = serializationTest(regexPatternFilter);
regexPatternFilterTests(newFilter);
}
}