private static <I1, I2, K, OUT>
PlanLeftUnwrappingCoGroupOperator<I1, I2, OUT, K> translateSelectorFunctionCoGroupLeft(
SelectorFunctionKeys<I1, ?> rawKeys1,
int[] logicalKeyPositions2,
CoGroupFunction<I1, I2, OUT> function,
TypeInformation<I2> inputType2,
TypeInformation<OUT> outputType,
String name,
Operator<I1> input1,
Operator<I2> input2) {
if (!inputType2.isTupleType()) {
throw new InvalidParameterException("Should not happen.");
}
@SuppressWarnings("unchecked")
final SelectorFunctionKeys<I1, K> keys1 = (SelectorFunctionKeys<I1, K>) rawKeys1;
final TypeInformation<Tuple2<K, I1>> typeInfoWithKey1 = KeyFunctions.createTypeWithKey(keys1);
final Operator<Tuple2<K, I1>> keyedInput1 = KeyFunctions.appendKeyExtractor(input1, keys1);
final PlanLeftUnwrappingCoGroupOperator<I1, I2, OUT, K> cogroup =
new PlanLeftUnwrappingCoGroupOperator<>(
function, keys1, logicalKeyPositions2, name, outputType, typeInfoWithKey1, inputType2);
cogroup.setFirstInput(keyedInput1);
cogroup.setSecondInput(input2);
return cogroup;
}
private static <I1, I2, K, OUT>
PlanBothUnwrappingCoGroupOperator<I1, I2, OUT, K> translateSelectorFunctionCoGroup(
SelectorFunctionKeys<I1, ?> rawKeys1,
SelectorFunctionKeys<I2, ?> rawKeys2,
CoGroupFunction<I1, I2, OUT> function,
TypeInformation<OUT> outputType,
String name,
Operator<I1> input1,
Operator<I2> input2) {
@SuppressWarnings("unchecked")
final SelectorFunctionKeys<I1, K> keys1 = (SelectorFunctionKeys<I1, K>) rawKeys1;
@SuppressWarnings("unchecked")
final SelectorFunctionKeys<I2, K> keys2 = (SelectorFunctionKeys<I2, K>) rawKeys2;
final TypeInformation<Tuple2<K, I1>> typeInfoWithKey1 = KeyFunctions.createTypeWithKey(keys1);
final TypeInformation<Tuple2<K, I2>> typeInfoWithKey2 = KeyFunctions.createTypeWithKey(keys2);
final Operator<Tuple2<K, I1>> keyedInput1 = KeyFunctions.appendKeyExtractor(input1, keys1);
final Operator<Tuple2<K, I2>> keyedInput2 = KeyFunctions.appendKeyExtractor(input2, keys2);
final PlanBothUnwrappingCoGroupOperator<I1, I2, OUT, K> cogroup =
new PlanBothUnwrappingCoGroupOperator<>(
function, keys1, keys2, name, outputType, typeInfoWithKey1, typeInfoWithKey2);
cogroup.setFirstInput(keyedInput1);
cogroup.setSecondInput(keyedInput2);
return cogroup;
}