Examples with FirstLastFunction org.apache.apex.malhar.contrib.misc.streamquery.function.FirstLastFunction used on opensource projects

Example 1 with FirstLastFunction

use of org.apache.apex.malhar.contrib.misc.streamquery.function.FirstLastFunction in project apex-malhar by apache.

the class SelectFirstLastTest method testSqlSelect.

@SuppressWarnings({ "rawtypes", "unchecked" })
@Test
public void testSqlSelect() {
    // create operator
    SelectFunctionOperator oper = new SelectFunctionOperator();
    oper.addSqlFunction(new FirstLastFunction("b", null, false));
    CollectorTestSink sink = new CollectorTestSink();
    oper.outport.setSink(sink);
    oper.setup(null);
    oper.beginWindow(1);
    HashMap<String, Object> tuple = new HashMap<String, Object>();
    tuple.put("a", 0);
    tuple.put("b", null);
    tuple.put("c", 2);
    oper.inport.process(tuple);
    tuple = new HashMap<String, Object>();
    tuple.put("a", 1);
    tuple.put("b", null);
    tuple.put("c", 4);
    oper.inport.process(tuple);
    tuple = new HashMap<String, Object>();
    tuple.put("a", 1);
    tuple.put("b", 5);
    tuple.put("c", 6);
    oper.inport.process(tuple);
    oper.endWindow();
    oper.teardown();
    LOG.debug("{}", sink.collectedTuples);
}