Examples of org.apache.pig.data.Tuple

org.apache.pig.data.Tuple
An ordered list of Data. A tuple has fields, numbered 0 through (number of fields - 1). The entry in the field can be any datatype, or it can be null.
Tuples are constructed only by a {@link TupleFactory}. A {@link DefaultTupleFactory}is provided by the system. If users wish to use their own type of Tuple, they should also provide an implementation of {@link TupleFactory} toconstruct their types of Tuples.

        pigServer.registerQuery("C = limit B 10;");
        pigServer.registerQuery("D = foreach C generate $0;");
        Iterator<Tuple> iter = pigServer.openIterator("D");
        
        assertTrue(iter.hasNext());
        Tuple t = iter.next();
        
        assertTrue(t.size()==1);
        assertTrue(t.get(0).toString().equals("1"));
        
        assertTrue(iter.hasNext());
        t = iter.next();
        
        assertTrue(t.size()==1);
        assertTrue(t.get(0).toString().equals("2"));
        
        assertFalse(iter.hasNext());
        
        assertTrue(checkLogFileMessage(new String[]{"Columns pruned for A: $2"}));
    }

View Full Code Here

        pigServer.registerQuery("B = filter A by a0+a2 == 4;");
        pigServer.registerQuery("C = foreach B generate $0;");
        Iterator<Tuple> iter = pigServer.openIterator("C");
        
        assertTrue(iter.hasNext());
        Tuple t = iter.next();
        
        assertTrue(t.size()==1);
        assertTrue(t.get(0).toString().equals("1"));
        
        assertTrue(iter.hasNext());
        t = iter.next();
        
        assertTrue(t.size()==1);
        assertTrue(t.get(0).toString().equals("2"));


        assertFalse(iter.hasNext());
        
        assertTrue(checkLogFileMessage(new String[]{"Columns pruned for A: $1"}));
    }

View Full Code Here

        pigServer.registerQuery("A = load '"+ Util.generateURI(tmpFile1.toString(), pigServer.getPigContext()) + "' as (a0:int, a1:int, a2:int);");
        pigServer.registerQuery("B = foreach A generate a1, a2;");
        Iterator<Tuple> iter = pigServer.openIterator("B");
        
        assertTrue(iter.hasNext());
        Tuple t = iter.next();
        
        assertTrue(t.size()==2);
        assertTrue((Integer)t.get(0) == 2);
        assertTrue((Integer)t.get(1) == 3);
        
        assertTrue(iter.hasNext());
        t = iter.next();
        
        assertTrue(t.size()==2);
        assertTrue((Integer)t.get(0) == 5);
        assertTrue((Integer)t.get(1) == 2);
        
        assertTrue(checkLogFileMessage(new String[]{"Columns pruned for A: $0"}));
    }

View Full Code Here

        pigServer.registerQuery("A = load '"+ Util.generateURI(tmpFile1.toString(), pigServer.getPigContext()) + "' as (a0:int, a1:int, a2:int);");
        pigServer.registerQuery("B = foreach A generate a0, a2;");
        Iterator<Tuple> iter = pigServer.openIterator("B");
        
        assertTrue(iter.hasNext());
        Tuple t = iter.next();
        
        assertTrue(t.size()==2);
        assertTrue((Integer)t.get(0) == 1);
        assertTrue((Integer)t.get(1) == 3);
        
        assertTrue(iter.hasNext());
        t = iter.next();
        
        assertTrue(t.size()==2);
        assertTrue((Integer)t.get(0) == 2);
        assertTrue((Integer)t.get(1) == 2);
        
        assertTrue(checkLogFileMessage(new String[]{"Columns pruned for A: $1"}));
    }

View Full Code Here

        pigServer.registerQuery("A = load '"+ Util.generateURI(tmpFile1.toString(), pigServer.getPigContext()) + "' as (a0:int, a1:int, a2:int);");
        pigServer.registerQuery("B = foreach A generate a0, a1;");
        Iterator<Tuple> iter = pigServer.openIterator("B");
        
        assertTrue(iter.hasNext());
        Tuple t = iter.next();
        
        assertTrue(t.size()==2);
        assertTrue((Integer)t.get(0) == 1);
        assertTrue((Integer)t.get(1) == 2);
        
        assertTrue(iter.hasNext());
        t = iter.next();
        
        assertTrue(t.size()==2);
        assertTrue((Integer)t.get(0) == 2);
        assertTrue((Integer)t.get(1) == 5);
        
        assertTrue(checkLogFileMessage(new String[]{"Columns pruned for A: $2"}));
    }

View Full Code Here

        pigServer.registerQuery("D = foreach C generate a1, a2, b0, b1;");
        
        Iterator<Tuple> iter = pigServer.openIterator("D");
        
        assertTrue(iter.hasNext());
        Tuple t = iter.next();
        assertTrue(t.size()==4);
        assertTrue(t.get(0).equals(2));
        assertTrue(t.get(1).equals(3));
        assertTrue(t.get(2).equals(2));
        assertTrue(t.get(3).equals(2));
        
        assertFalse(iter.hasNext());
        
        assertTrue(checkLogFileMessage(new String[]{"Columns pruned for A: $0"}));
    }

View Full Code Here

        pigServer.registerQuery("D = foreach C generate a1, a2, b1;");
        
        Iterator<Tuple> iter = pigServer.openIterator("D");
        
        assertTrue(iter.hasNext());
        Tuple t = iter.next();
        assertTrue(t.size()==3);
        assertTrue(t.get(0).equals(2));
        assertTrue(t.get(1).equals(3));
        assertTrue(t.get(2).equals(2));
        
        assertFalse(iter.hasNext());
        
        assertTrue(checkLogFileMessage(new String[]{"Columns pruned for A: $0",
                "Columns pruned for B: $0"}));

View Full Code Here

        pigServer.registerQuery("C = foreach B generate a0, a1;");
        
        Iterator<Tuple> iter = pigServer.openIterator("C");
        
        assertTrue(iter.hasNext());
        Tuple t = iter.next();
        assertTrue(t.size()==2);
        assertTrue(t.get(0).equals(1));
        assertTrue(t.get(1).equals(2));
        
        assertFalse(iter.hasNext());
        
        assertTrue(emptyLogFileMessage());
    }

View Full Code Here

        pigServer.registerQuery("B = foreach A generate a0, a1+a2;");
        
        Iterator<Tuple> iter = pigServer.openIterator("B");
        
        assertTrue(iter.hasNext());
        Tuple t = iter.next();
        assertTrue(t.size()==2);
        assertTrue(t.get(0).equals(1));
        assertTrue(t.get(1).equals(5));
        
        assertTrue(iter.hasNext());
        t = iter.next();
        assertTrue(t.size()==2);
        assertTrue(t.get(0).equals(2));
        assertTrue(t.get(1).equals(7));
        
        assertFalse(iter.hasNext());
        
        assertTrue(emptyLogFileMessage());
    }

View Full Code Here

        pigServer.registerQuery("B = foreach A generate a0 as b0, *;");
        
        Iterator<Tuple> iter = pigServer.openIterator("B");
        
        assertTrue(iter.hasNext());
        Tuple t = iter.next();
        assertTrue(t.size()==4);
        assertTrue(t.get(0).equals(1));
        assertTrue(t.get(1).equals(1));
        assertTrue(t.get(2).equals(2));
        assertTrue(t.get(3).equals(3));
        
        assertTrue(iter.hasNext());
        t = iter.next();
        assertTrue(t.size()==4);
        assertTrue(t.get(0).equals(2));
        assertTrue(t.get(1).equals(2));
        assertTrue(t.get(2).equals(5));
        assertTrue(t.get(3).equals(2));
        
        assertFalse(iter.hasNext());
        
        assertTrue(emptyLogFileMessage());
    }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.apache.pig.data.Tuple

org.apache.cassandra.pig.CqlTableDataTypeTest

org.apache.howl.data.HowlArrayBag

org.apache.howl.mapreduce.TestHowlHiveCompatibility

org.apache.howl.pig.TestHowlLoader

org.apache.howl.pig.TestHowlStorer

org.apache.pig.backend.hadoop.executionengine.mapreduceExec.PigMapReduce

org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.LitePackager

org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.MultiQueryPackager

org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.Packager

org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POCollectedGroup

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.