private <P> PartitionOperator(
DataSet<T> input,
PartitionMethod pMethod,
Keys<T> pKeys,
Partitioner<P> customPartitioner,
TypeInformation<P> partitionerTypeInfo,
String partitionLocationName) {
super(input, input.getType());
Preconditions.checkNotNull(pMethod);
Preconditions.checkArgument(
pKeys != null || pMethod == PartitionMethod.REBALANCE, "Partitioning requires keys");
Preconditions.checkArgument(
pMethod != PartitionMethod.CUSTOM || customPartitioner != null,
"Custom partioning requires a partitioner.");
Preconditions.checkArgument(
pMethod != PartitionMethod.RANGE, "Range partitioning is not yet supported");
if (pKeys instanceof Keys.ExpressionKeys<?> && !(input.getType() instanceof CompositeType)) {
throw new IllegalArgumentException(
"Hash Partitioning with key fields only possible on Tuple or POJO DataSets");
}
if (customPartitioner != null) {
pKeys.validateCustomPartitioner(customPartitioner, partitionerTypeInfo);
}
this.pMethod = pMethod;
this.pKeys = pKeys;
this.partitionLocationName = partitionLocationName;
this.customPartitioner = customPartitioner;
}
