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*
* Pentaho Data Integration
*
* Copyright (C) 2002-2015 by Pentaho : http://www.pentaho.com
*
*******************************************************************************
*
* Licensed 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
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package org.pentaho.di.trans.steps.databaselookup.readallcache;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.pentaho.di.core.row.value.ValueMetaInteger;
import java.util.Arrays;
import java.util.BitSet;
import java.util.List;
import static org.junit.Assert.*;
/**
* @author Andrey Khayrutdinov
*/
@RunWith( Parameterized.class )
public class IsNullIndexTest {
@Parameterized.Parameters
public static List<Object[]> createSampleData() {
Long[][] sample1 = new Long[][] { { null }, { null }, { 1L }, { null }, { null } };
Long[][] sample2 = new Long[][] { { 1L }, { null }, { null }, { 1L }, { 1L } };
Long[][] sample3 = new Long[][] { { null }, { 1L }, { null }, { 1L }, { null } };
Long[][] sample4 = new Long[][] { { null }, { null }, { null }, { null }, { null } };
Long[][] sample5 = new Long[][] { { 1L }, { 1L }, { 1L }, { 1L }, { 1L } };
return Arrays.asList(
new Object[] { sample1 },
new Object[] { sample2 },
new Object[] { sample3 },
new Object[] { sample4 },
new Object[] { sample5 }
);
}
private final Long[][] rows;
private final int amountOfNulls;
private IsNullIndex matchingNulls;
private IsNullIndex matchingNonNulls;
private SearchingContext context;
public IsNullIndexTest( Long[][] rows ) {
this.rows = rows;
int cnt = 0;
for ( Long[] row : rows ) {
for ( Long value : row ) {
if ( value == null ) {
cnt++;
}
}
}
this.amountOfNulls = cnt;
}
@Before
public void setUp() throws Exception {
matchingNulls = new IsNullIndex( 0, new ValueMetaInteger(), 5, true );
matchingNulls.performIndexingOf( rows );
matchingNonNulls = new IsNullIndex( 0, new ValueMetaInteger(), 5, false );
matchingNonNulls.performIndexingOf( rows );
context = new SearchingContext();
context.init( 5 );
}
@After
public void tearDown() {
matchingNulls = null;
matchingNonNulls = null;
context = null;
}
@Test
public void lookupFor_Null() {
testFindsCorrectly( matchingNulls, true );
}
@Test
public void lookupFor_One() {
testFindsCorrectly( matchingNonNulls, false );
}
private void testFindsCorrectly( IsNullIndex index, boolean isLookingForNull ) {
final int expectedAmount = isLookingForNull ? amountOfNulls : 5 - amountOfNulls;
assertFalse( context.isEmpty() );
// the index ignores lookup value - pass null there
index.applyRestrictionsTo( context, new ValueMetaInteger(), null );
if ( expectedAmount == 0 ) {
assertTrue( context.isEmpty() );
return;
}
assertFalse( String.format( "Expected to find %d values", expectedAmount ), context.isEmpty() );
BitSet actual = context.getCandidates();
int cnt = expectedAmount;
int lastSetBit = 0;
while ( cnt > 0 ) {
lastSetBit = actual.nextSetBit( lastSetBit );
if ( lastSetBit < 0 ) {
fail( "Expected to find " + expectedAmount + " values, but got: " + actual.toString() );
}
Long actualValue = rows[ lastSetBit ][ 0 ];
if ( isLookingForNull ) {
assertNull( actualValue );
} else {
assertEquals( Long.valueOf( 1 ), actualValue );
}
lastSetBit++;
cnt--;
}
}
}