Examples of cascading.operation.Function

cascading.operation.Function
Interface Function marks a given {@link Operation} as a function, as opposed to being a {@link Filter}.
A Function is responsible for taking Tuple arguments and returning one or more result Tuples.
To implement a Function, (optionally) sub-class {@link BaseOperation} and have the new sub-class {@code implement}this interface.


    sources.put( "lower", source );


    Tap sink = getPlatform().getTextFile( new Fields( "line" ), getOutputPath( "samepipe" ), SinkMode.REPLACE );


    Function splitter = new RegexSplitter( new Fields( "num", "char" ), " " );


    Pipe pipeLower = new Each( new Pipe( "lower" ), new Fields( "line" ), splitter );


    Pipe cogroup = new CoGroup( pipeLower, new Fields( "num" ), 1, new Fields( "num1", "char1", "num2", "char2" ) );

View Full Code Here


    sources.put( "lower", source );


    Tap sink = getPlatform().getTextFile( new Fields( "line" ), getOutputPath( "samepipe2" ), SinkMode.REPLACE );


    Function splitter = new RegexSplitter( new Fields( "num", "char" ), " " );


    Pipe pipeLower = new Each( new Pipe( "lower" ), new Fields( "line" ), splitter );


    Pipe cogroup = new CoGroup( pipeLower, new Fields( "num" ), pipeLower, new Fields( "num" ), new Fields( "num1", "char1", "num2", "char2" ) );

View Full Code Here

    sources.put( "upper1", sourceUpper );
    sources.put( "upper2", sourceUpper );


    Tap sink = getPlatform().getTextFile( new Fields( "line" ), getOutputPath( "cogroupacogroup" ), SinkMode.REPLACE );


    Function splitter = new RegexSplitter( new Fields( "num", "char" ), " " );


    Pipe pipeLower = new Each( new Pipe( "lower" ), new Fields( "line" ), splitter );
    Pipe pipeUpper1 = new Each( new Pipe( "upper1" ), new Fields( "line" ), splitter );
    Pipe pipeUpper2 = new Each( new Pipe( "upper2" ), new Fields( "line" ), splitter );

View Full Code Here

    sources.put( "offsetLower", sourceOffsetLower );
    sources.put( "lower", sourceLower );


    Tap sink = getPlatform().getTextFile( new Fields( "line" ), getOutputPath( "samefiledifffields" ), SinkMode.REPLACE );


    Function splitterLower = new RegexSplitter( new Fields( "numA", "left" ), " " );
    Function splitterUpper = new RegexSplitter( new Fields( "numB", "right" ), " " );


    Pipe offsetLower = new Pipe( "offsetLower" );
    offsetLower = new Discard( offsetLower, new Fields( "offset" ) );
    offsetLower = new Each( offsetLower, new Fields( "line" ), splitterLower );

View Full Code Here

    sources.put( "lower", sourceLower );
    sources.put( "upper", sourceUpper );


    Tap sink = getPlatform().getTextFile( new Fields( "line" ), getOutputPath( "joinnone" ), SinkMode.REPLACE );


    Function splitter = new RegexSplitter( new Fields( "num", "char" ), " " );


    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 CoGroup( pipeLower, Fields.NONE, pipeUpper, Fields.NONE, Fields.size( 4 ) );

View Full Code Here

    Map sources = new HashMap();


    sources.put( "lower", sourceLower );
    sources.put( "upper", sourceUpper );


    Function splitter = new RegexSplitter( new Fields( "num", "char" ), " " );


    // using null pos so all fields are written
    Tap sink = getPlatform().getTextFile( new Fields( "line" ), getOutputPath( "simplemerge" ), SinkMode.REPLACE );


    Pipe pipeLower = new Each( new Pipe( "lower" ), new Fields( "line" ), splitter );

View Full Code Here

    sources.put( "upper", sourceUpper );
    sources.put( "offset", sourceLowerOffset );


    Tap sink = getPlatform().getDelimitedFile( Fields.ALL, "\t", getOutputPath( "simplemergethree" ), SinkMode.REPLACE );


    Function splitter = new RegexSplitter( new Fields( "num", "char" ), " " );


    Pipe pipeLower = new Each( new Pipe( "lower" ), new Fields( "line" ), splitter );
    Pipe pipeUpper = new Each( new Pipe( "upper" ), new Fields( "line" ), splitter );
    Pipe pipeOffset = new Each( new Pipe( "offset" ), new Fields( "line" ), splitter );

View Full Code Here


    sources.put( "split", sourceLower );


    Tap sink = getPlatform().getTextFile( getOutputPath( "samemergethreechaingroup" ), SinkMode.REPLACE );


    Function splitter = new RegexSplitter( new Fields( "num", "char" ), " " );


    Pipe pipe = new Pipe( "split" );


    Pipe pipeLower = new Each( new Pipe( "lower", pipe ), new Fields( "line" ), splitter );
    Pipe pipeUpper = new Each( new Pipe( "upper", pipe ), new Fields( "line" ), splitter );

View Full Code Here

    Tap sourceLower = getPlatform().getTextFile( inputFileLower );
    Tap sourceUpper = getPlatform().getTextFile( inputFileUpper );


    Tap source = new MultiSourceTap( sourceLower, sourceUpper );


    Function splitter = new RegexSplitter( new Fields( "num", "char" ), " " );


    // using null pos so all fields are written
    Tap sink = getPlatform().getTextFile( getOutputPath( "complexconcat" ), SinkMode.REPLACE );


    Pipe pipe = new Each( new Pipe( "concat" ), new Fields( "line" ), splitter );

View Full Code Here

    Tap source = getPlatform().getTextFile( new Fields( "offset", "line" ), inputFileApache );
    Tap sink = getPlatform().getTextFile( new Fields( "offset", "line" ), new Fields( "offset", "line" ), getOutputPath( "replace" ), SinkMode.REPLACE );


    Pipe pipe = new Pipe( "test" );


    Function parser = new RegexParser( new Fields( 0 ), "^[^ ]*" );
    pipe = new Each( pipe, new Fields( "line" ), parser, Fields.REPLACE );
    pipe = new Each( pipe, new Fields( "line" ), new Identity( Fields.ARGS ), Fields.REPLACE );
    pipe = new Each( pipe, new Fields( "line" ), new Identity( new Fields( "line" ) ), Fields.REPLACE );


    pipe = new Each( pipe, new Debug( true ) );

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of cascading.operation.Function

cascading.BasicPipesPlatformTest

cascading.BufferPipesPlatformTest

cascading.CoGroupFieldedPipesPlatformTest

cascading.DistanceUseCasePlatformTest

cascading.FieldedPipesPlatformTest

cascading.flow.hadoop.BuildJobsHadoopPlatformTest

cascading.flow.hadoop.FlowPlatformTest

cascading.flow.iso.graph.HashJoinAroundHashJoinLeftMostGraph

cascading.flow.iso.graph.HashJoinSameSourceGraph

cascading.flow.iso.graph.HashJoinsIntoMerge

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.