Examples of org.apache.pig.builtin.STRSPLIT.exec()

org.apache.pig.builtin.STRSPLIT.exec()
Wrapper around Java's String.split @param input tuple; first column is assumed to have a string to split;the optional second column is assumed to have the delimiter or regex to split on;
if not provided, it's assumed to be '\s' (space) the optional third column may provide a limit to the number of results.
If limit is not provided, 0 is assumed, as per Java's split(). @exception java.io.IOException

        Tuple test2 = TupleFactory.getInstance().newTuple(2);
        Tuple test3 = TupleFactory.getInstance().newTuple(3);
        
        test2.set(0, "foo");
        test2.set(1, ":");
        Tuple splits = splitter.exec(test2);
        assertEquals("no matches should return tuple with original string", 1, splits.size());
        assertEquals("no matches should return tuple with original string", "foo", 
                splits.get(0));
            
        // test default delimiter

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        assertEquals("no matches should return tuple with original string", "foo", 
                splits.get(0));
            
        // test default delimiter
        test1.set(0, "f ooo bar");
        splits = splitter.exec(test1);
        assertEquals("split on default value ", 3, splits.size());
        assertEquals("f", splits.get(0));
        assertEquals("ooo", splits.get(1));
        assertEquals("bar", splits.get(2));

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        assertEquals("ooo", splits.get(1));
        assertEquals("bar", splits.get(2));
        
        // test trimming of whitespace
        test1.set(0, "foo bar  ");
        splits = splitter.exec(test1);
        assertEquals("whitespace trimmed if no length arg", 2, splits.size());
        
        // test forcing null matches with length param
        test3.set(0, "foo bar   ");
        test3.set(1, "\\s");

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        // test forcing null matches with length param
        test3.set(0, "foo bar   ");
        test3.set(1, "\\s");
        test3.set(2, 10);
        splits = splitter.exec(test3);
        assertEquals("length forces empty string matches on end", 5, splits.size());
        
        // test limiting results with limit
        test3.set(0, "foo:bar:baz");
        test3.set(1, ":");

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        // test limiting results with limit
        test3.set(0, "foo:bar:baz");
        test3.set(1, ":");
        test3.set(2, 2);
        splits = splitter.exec(test3);
        assertEquals(2, splits.size());
        assertEquals("foo", splits.get(0));
        assertEquals("bar:baz", splits.get(1));
        
        Tuple t1 = TupleFactory.getInstance().newTuple(3);

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        Tuple test2 = TupleFactory.getInstance().newTuple(2);
        Tuple test3 = TupleFactory.getInstance().newTuple(3);
        
        test2.set(0, "foo");
        test2.set(1, ":");
        Tuple splits = splitter.exec(test2);
        assertEquals("no matches should return tuple with original string", 1, splits.size());
        assertEquals("no matches should return tuple with original string", "foo", 
                splits.get(0));
            
        // test default delimiter

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        assertEquals("no matches should return tuple with original string", "foo", 
                splits.get(0));
            
        // test default delimiter
        test1.set(0, "f ooo bar");
        splits = splitter.exec(test1);
        assertEquals("split on default value ", 3, splits.size());
        assertEquals("f", splits.get(0));
        assertEquals("ooo", splits.get(1));
        assertEquals("bar", splits.get(2));

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        assertEquals("ooo", splits.get(1));
        assertEquals("bar", splits.get(2));
        
        // test trimming of whitespace
        test1.set(0, "foo bar  ");
        splits = splitter.exec(test1);
        assertEquals("whitespace trimmed if no length arg", 2, splits.size());
        
        // test forcing null matches with length param
        test3.set(0, "foo bar   ");
        test3.set(1, "\\s");

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        // test forcing null matches with length param
        test3.set(0, "foo bar   ");
        test3.set(1, "\\s");
        test3.set(2, 10);
        splits = splitter.exec(test3);
        assertEquals("length forces empty string matches on end", 5, splits.size());
        
        // test limiting results with limit
        test3.set(0, "foo:bar:baz");
        test3.set(1, ":");

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        // test limiting results with limit
        test3.set(0, "foo:bar:baz");
        test3.set(1, ":");
        test3.set(2, 2);
        splits = splitter.exec(test3);
        assertEquals(2, splits.size());
        assertEquals("foo", splits.get(0));
        assertEquals("bar:baz", splits.get(1));
        
        Tuple t1 = TupleFactory.getInstance().newTuple(3);

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