List of openIterator() Examples

Examples of openIterator()

org.apache.pig.PigServer.openIterator()

Executes a Pig Latin script up to and including indicated alias. That is, if a user does:

 PigServer server = new PigServer(); server.registerQuery("A = load 'foo';"); server.registerQuery("B = filter A by $0 > 0;"); server.registerQuery("C = order B by $1;");

Then

 server.openIterator("B");

filtered but unsorted data will be returned. If instead a user does

 server.openIterator("C");

filtered and sorted data will be returned. @param id Alias to open iterator for @return iterator of tuples returned from the script @throws IOException

        Schema sch = pig.dumpSchema("fil");
        Schema expectedSch = Util.getSchemaFromString("i: int, x: int, y: int");
        assertEquals("Checking expected schema",sch, expectedSch);
        


        Iterator<Tuple> it = pig.openIterator("fil");
        List<Tuple> expectedRes = 
            Util.getTuplesFromConstantTupleStrings(
                    new String[] {
                            "(5,null,null)",
                    });

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Examples of openIterator()

Examples of org.apache.pig.PigServer.openIterator()