Examples of org.apache.pig.LoadFunc.prepareToRead()

org.apache.pig.LoadFunc.prepareToRead()
Initializes LoadFunc for reading data. This will be called during execution before any calls to getNext. The RecordReader needs to be passed here because it has been instantiated for a particular InputSplit. @param reader {@link RecordReader} to be used by this instance of the LoadFunc @param split The input {@link PigSplit} to process @throws IOException if there is an exception during initialization

    loader.setLocation("a\tb", job);


    RecordReader reader = EasyMock.createMock(RecordReader.class);
    PigSplit split = EasyMock.createMock(PigSplit.class);
    EasyMock.expect(split.getConf()).andStubReturn(conf);
    loader.prepareToRead(reader, split);
    Tuple next = loader.getNext();
    assertEquals("a", next.get(0));
    assertEquals("b", next.get(1));


  }

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    loader.setLocation("a,b\tc", job);


    RecordReader reader = EasyMock.createMock(RecordReader.class);
    PigSplit split = EasyMock.createMock(PigSplit.class);
    EasyMock.expect(split.getConf()).andStubReturn(conf);
    loader.prepareToRead(reader, split);
    Tuple next = loader.getNext();
    assertEquals("a", next.get(0));
    assertEquals("b\tc", next.get(1));


  }

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