Examples of org.apache.pig.builtin.KEYSET

org.apache.pig.builtin.KEYSET

This UDF takes a Map and returns a Bag containing the keyset.

  grunt> cat data [open#apache,1#2,11#2] [apache#hadoop,3#4,12#hadoop] grunt> a = load 'data' as (M:[]); grunt> b = foreach a generate KEYSET($0); grunt> dump b; ({(open),(1),(11)}) ({(3),(apache),(12)})

        m.put("open", "apache");
        m.put("1", "hadoop");
        m.put("source", "code");
        Tuple input = TupleFactory.getInstance().newTuple(m);


        KEYSET keySet = new KEYSET();
        DataBag result = keySet.exec(input);
        Iterator<Tuple> i = result.iterator();
        assertEquals(result.size(), m.size());


        while(i.hasNext()) {
            Tuple t = i.next();

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        m.put("open", "apache");
        m.put("1", "hadoop");
        m.put("source", "code");
        Tuple input = TupleFactory.getInstance().newTuple(m);


        KEYSET keySet = new KEYSET();
        DataBag result = keySet.exec(input);
        Iterator<Tuple> i = result.iterator();
        assertEquals(result.size(), m.size());


        while(i.hasNext()) {
            Tuple t = i.next();

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        m.put("open", "apache");
        m.put("1", "hadoop");
        m.put("source", "code");
        Tuple input = TupleFactory.getInstance().newTuple(m);


        KEYSET keySet = new KEYSET();
        DataBag result = keySet.exec(input);
        Iterator<Tuple> i = result.iterator();
        assertEquals(result.size(), m.size());


        while(i.hasNext()) {
            Tuple t = i.next();

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        m.put("open", "apache");
        m.put("1", "hadoop");
        m.put("source", "code");
        Tuple input = TupleFactory.getInstance().newTuple(m);


        KEYSET keySet = new KEYSET();
        DataBag result = keySet.exec(input);
        Iterator<Tuple> i = result.iterator();
        assertEquals(result.size(), m.size());


        while(i.hasNext()) {
            Tuple t = i.next();

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Related Classes of org.apache.pig.builtin.KEYSET

org.apache.pig.data.DataBag

org.apache.pig.data.NonSpillableDataBag

org.apache.pig.data.Tuple

org.apache.pig.impl.logicalLayer.schema.Schema

org.apache.pig.impl.logicalLayer.schema.Schema.FieldSchema

org.apache.pig.test.TestBuiltin

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