/*
* Copyright (c) 2007-2014 Concurrent, Inc. All Rights Reserved.
*
* Project and contact information: http://www.cascading.org/
*
* This file is part of the Cascading project.
*
* 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
* limitations under the License.
*/
package cascading.pipe;
import java.util.HashMap;
import java.util.Map;
import cascading.PlatformTestCase;
import cascading.flow.Flow;
import cascading.operation.Function;
import cascading.operation.regex.RegexSplitter;
import cascading.tap.SinkMode;
import cascading.tap.Tap;
import cascading.tuple.Fields;
import org.junit.Test;
/**
*
*/
public class MergeGroupPlatformTest extends PlatformTestCase
{
public MergeGroupPlatformTest()
{
}
@Test
public void testBuildMerge()
{
Tap sourceLower = getPlatform().getTextFile( "file1" );
Tap sourceUpper = getPlatform().getTextFile( "file2" );
Map sources = new HashMap();
sources.put( "lower", sourceLower );
sources.put( "upper", sourceUpper );
Function splitter = new RegexSplitter( new Fields( "num", "char" ), " " );
Tap sink = getPlatform().getTextFile( "outpath", SinkMode.REPLACE );
Pipe pipeLower = new Each( new Pipe( "lower" ), new Fields( "line" ), splitter );
Pipe pipeUpper = new Each( new Pipe( "upper" ), new Fields( "line" ), splitter );
Pipe splice = new GroupBy( "merge", Pipe.pipes( pipeLower, pipeUpper ), new Fields( "num" ), null, false );
Flow flow = getPlatform().getFlowConnector().connect( sources, sink, splice );
}
@Test
public void testBuildMergeFail()
{
Tap sourceLower = getPlatform().getTextFile( "file1" );
Tap sourceUpper = getPlatform().getTextFile( "file2" );
Map sources = new HashMap();
sources.put( "lower", sourceLower );
sources.put( "upper", sourceUpper );
Function splitter1 = new RegexSplitter( new Fields( "num", "foo" ), " " );
Function splitter2 = new RegexSplitter( new Fields( "num", "bar" ), " " );
Tap sink = getPlatform().getTextFile( "outpath", SinkMode.REPLACE );
Pipe pipeLower = new Each( new Pipe( "lower" ), new Fields( "line" ), splitter1 );
Pipe pipeUpper = new Each( new Pipe( "upper" ), new Fields( "line" ), splitter2 );
Pipe splice = new GroupBy( "merge", Pipe.pipes( pipeLower, pipeUpper ), new Fields( "num" ), null, false );
try
{
Flow flow = getPlatform().getFlowConnector().connect( sources, sink, splice );
fail( "did not fail on mismatched field names" );
}
catch( Exception exception )
{
// test passes
}
}
}