// where outgoing fields are SWAP
@Test
public void testSelectorSwap() {
// if( getOutputSelector().isSwap() )
// {
// if( remainderFields.size() == 0 ) // the same as Fields.RESULTS
// return output;
// else
// return inputEntry.selectTuple( remainderFields ).append( output );
// }
Fields incomingFields = new Fields("1", "2", "3", "4");
Tuple incoming = new Tuple(1, 2, 3, 4);
Fields remainderFields = new Fields("1", "4");
Tuple bottomView = TupleViews.createNarrow(incomingFields.getPos(remainderFields), incoming);
assertEquals(new Tuple(1, 4), bottomView);
assertEquals(new Tuple(1, 4), new Tuple(bottomView));
Fields resultFields = new Fields("5", "6", "7");
Tuple result = new Tuple(5, 6, 7);
Tuple view = TupleViews.createComposite(bottomView, result);
assertEquals(new Tuple(1, 4, 5, 6, 7), view);
assertEquals(new Tuple(1, 4, 5, 6, 7), new Tuple(view));
Tuple fieldView = TupleViews.createComposite(remainderFields, resultFields);
TupleViews.reset(fieldView, view, result);
assertEquals(new Tuple(1, 4, 5, 6, 7), fieldView);
assertEquals(new Tuple(1, 4, 5, 6, 7), new Tuple(fieldView));
}
// where outgoing fields are REPLACE
@Test
public void testSelectorReplace() {
// if( getOutputSelector().isReplace() )
// {
// Tuple result = new Tuple( inputEntry.getTuple() );
//
// handle case where operation is declaring the argument fields, and they are positional
// if( getFieldDeclaration().isArguments() )
// result.set( inputEntry.getFields(), argumentSelector, output );
// else
// result.set( inputEntry.getFields(), declaredEntry.getFields(), output );
//
// return result;
// }
Fields incomingFields = new Fields("1", "2", "3", "4");
Tuple incoming = new Tuple(1, 2, 3, 4);
Fields resultFields = new Fields("3", "2");
Tuple result = new Tuple(5, 6);
int[] setPos = incomingFields.getPos(resultFields);
Tuple view = TupleViews.createOverride(incomingFields.getPos(), incoming, setPos, result);
assertEquals(new Tuple(1, 6, 5, 4), view);
assertEquals(new Tuple(1, 6, 5, 4), new Tuple(view));
}
@Override
public void sourcePrepare(
FlowProcess<? extends Properties> flowProcess,
SourceCall<LineNumberReader, InputStream> sourceCall)
throws IOException {
sourceCall.setContext(createInput(sourceCall.getInput()));
sourceCall.getIncomingEntry().setTuple(TupleViews.createObjectArray());
}
// tests actual swap algebra
@Test
public void testSelectorSwap2() {
Fields incomingFields = new Fields("0", "1", 2, 3);
Tuple incoming = new Tuple(0, 1, 2, 3);
Fields resultFields = new Fields("0", "1");
Tuple result = new Tuple(0, 1);
Fields remainderFields = incomingFields.subtract(resultFields);
Tuple remainderView = createNarrow(incomingFields.getPos(remainderFields));
Tuple outgoingTuple = createComposite(Fields.asDeclaration(remainderFields), resultFields);
TupleViews.reset(remainderView, incoming);
TupleViews.reset(outgoingTuple, remainderView, result);
assertEquals(new Tuple(2, 3, 0, 1), outgoingTuple);
assertEquals(new Tuple(2, 3, 0, 1), new Tuple(outgoingTuple));
}
@Test
public void testArgumentSelector() {
Fields declarator = new Fields("1", "2", "3", "4");
Tuple incoming = new Tuple(1, 2, 3, 4);
Fields selector = new Fields("3", "2");
assertTuple(incoming.get(declarator, selector));
int[] pos = incoming.getPos(declarator, selector);
assertTuple(incoming.get(pos));
assertTuple(TupleViews.createNarrow(pos, incoming));
}
// where outgoing fields are a combination of incoming and results
@Test
public void testSelectorMixed() {
// declaredEntry.setTuple( output );
//
// return TupleEntry.select( outgoingSelector, inputEntry, declaredEntry );
Fields incomingFields = new Fields("1", "2", "3", "4");
Tuple incoming = new Tuple(1, 2, 3, 4);
Fields resultFields = new Fields("5", "6", "7");
Tuple result = new Tuple(5, 6, 7);
Tuple bottomView = TupleViews.createComposite(incoming, result);
assertEquals(new Tuple(1, 2, 3, 4, 5, 6, 7), bottomView);
assertEquals(new Tuple(1, 2, 3, 4, 5, 6, 7), new Tuple(bottomView));
Fields allFields = Fields.join(incomingFields, resultFields);
Fields selector = new Fields("3", "2");
Tuple view = TupleViews.createNarrow(allFields.getPos(selector), bottomView);
assertTuple(view);
}
// where outgoing fields are ALL
@Test
public void testSelectorAll() {
// if( getOutputSelector().isAll() )
// return inputEntry.getTuple().append( output );
Fields incomingFields = new Fields("1", "2", "3", "4");
Tuple incoming = new Tuple(1, 2, 3, 4);
Fields resultFields = new Fields("5", "6", "7");
Tuple result = new Tuple(5, 6, 7);
Tuple view = TupleViews.createComposite(incoming, result);
assertEquals(new Tuple(1, 2, 3, 4, 5, 6, 7), view);
assertEquals(new Tuple(1, 2, 3, 4, 5, 6, 7), new Tuple(view));
Fields allFields = Fields.join(incomingFields, resultFields);
Fields selector = new Fields("3", "2");
assertTuple(view.get(allFields, selector));
}
@Override
public boolean source(
FlowProcess<? extends Properties> flowProcess,
SourceCall<LineNumberReader, InputStream> sourceCall)
throws IOException {
String line = sourceCall.getContext().readLine();
if (line == null) return false;
if (skipHeader && sourceCall.getContext().getLineNumber() == 1) // todo: optimize this away
line = sourceCall.getContext().readLine();
if (line == null) return false;
Object[] split = delimitedParser.parseLine(line);
// assumption it is better to re-use than to construct new
Tuple tuple = sourceCall.getIncomingEntry().getTuple();
TupleViews.reset(tuple, split);
return true;
}