How to use

Xor

in

cascading.operation.filter

@Test
public void testXor()
 {
 Fields[] fields = new Fields[]{new Fields( 0 ), new Fields( 1 )};
 Filter[] filters = new Filter[]{new BooleanFilter( true ), new BooleanFilter( true )};
 Filter filter = new Xor( fields[ 0 ], filters[ 0 ], fields[ 1 ], filters[ 1 ] );
 assertFalse( invokeFilter( filter, new Tuple( 1, 2 ) ) );
 filters = new Filter[]{new BooleanFilter( true ), new BooleanFilter( false )};
 filter = new Xor( fields[ 0 ], filters[ 0 ], fields[ 1 ], filters[ 1 ] );
 assertTrue( invokeFilter( filter, new Tuple( 1, 2 ) ) );
 filters = new Filter[]{new BooleanFilter( false ), new BooleanFilter( true )};
 filter = new Xor( fields[ 0 ], filters[ 0 ], fields[ 1 ], filters[ 1 ] );
 assertTrue( invokeFilter( filter, new Tuple( 1, 2 ) ) );
 filters = new Filter[]{new BooleanFilter( false ), new BooleanFilter( false )};
 filter = new Xor( fields[ 0 ], filters[ 0 ], fields[ 1 ], filters[ 1 ] );
 assertFalse( invokeFilter( filter, new Tuple( 1, 2 ) ) );
 }

@Test
public void testComplexLogicXor() throws Exception
 {
 copyFromLocal( inputFileLhs );
 Tap source = getPlatform().getDelimitedFile( new Fields( "num", "char" ), " ", inputFileLhs );
 Pipe pipe = new Pipe( "test" );
 Filter filter = new Not( new Xor( new Fields( "num" ), new RegexFilter( "1", true, true ), new Fields( "char" ), new RegexFilter( "a", true, true ) ) );
 // compounding the filter for the Fields.ALL case.
 pipe = new Each( pipe, filter );
 pipe = new Each( pipe, new Fields( "num", "char" ), filter );
 Tap sink = getPlatform().getDelimitedFile( Fields.ALL, " ", getOutputPath( "/regression/complexlogicxor" ), SinkMode.REPLACE );
 Flow flow = getPlatform().getFlowConnector().connect( source, sink, pipe );
 flow.complete();
 validateLength( flow, 3, 2, Pattern.compile( "(1\t.)|(.\ta)" ) );
 }

@Test
public void testComplexLogicXor() throws Exception
 {
 copyFromLocal( inputFileLhs );
 Tap source = getPlatform().getDelimitedFile( new Fields( "num", "char" ), " ", inputFileLhs );
 Pipe pipe = new Pipe( "test" );
 Filter filter = new Not( new Xor( new Fields( "num" ), new RegexFilter( "1", true, true ), new Fields( "char" ), new RegexFilter( "a", true, true ) ) );
 // compounding the filter for the Fields.ALL case.
 pipe = new Each( pipe, filter );
 pipe = new Each( pipe, new Fields( "num", "char" ), filter );
 Tap sink = getPlatform().getDelimitedFile( Fields.ALL, " ", getOutputPath( "/regression/complexlogicxor" ), SinkMode.REPLACE );
 Flow flow = getPlatform().getFlowConnector().connect( source, sink, pipe );
 flow.complete();
 validateLength( flow, 3, 2, Pattern.compile( "(1\t.)|(.\ta)" ) );
 }

@Test
public void testXorExpression()
 {
 Fields inputFields = new Fields( "a", "b" );
 ExpressionFilter f1 = new ExpressionFilter( "( 100f < a )", new String[]{"a"}, new Class<?>[]{Float.TYPE} );
 ExpressionFilter f2 = new ExpressionFilter( "( 100f < b )", new String[]{"b"}, new Class<?>[]{Float.TYPE} );
 Xor logic = new Xor( new Fields( "a" ), f1, new Fields( "b" ), f2 );
 boolean[] results = invokeFilter( logic,
  new TupleEntry[]{
   new TupleEntry( inputFields, new Tuple( "1", "10" ) ),
   new TupleEntry( inputFields, new Tuple( "2", "20" ) )
  } );
 assertFalse( results[ 0 ] );
 assertFalse( results[ 1 ] );
 }

@Test
public void testXorExpression()
 {
 Fields inputFields = new Fields( "a", "b" );
 ExpressionFilter f1 = new ExpressionFilter( "( 100f < a )", new String[]{"a"}, new Class<?>[]{Float.TYPE} );
 ExpressionFilter f2 = new ExpressionFilter( "( 100f < b )", new String[]{"b"}, new Class<?>[]{Float.TYPE} );
 Xor logic = new Xor( new Fields( "a" ), f1, new Fields( "b" ), f2 );
 boolean[] results = invokeFilter( logic,
  new TupleEntry[]{
   new TupleEntry( inputFields, new Tuple( "1", "10" ) ),
   new TupleEntry( inputFields, new Tuple( "2", "20" ) )
  } );
 assertFalse( results[ 0 ] );
 assertFalse( results[ 1 ] );
 }