org.apache.flink.api.java.operators

Class CoGroupOperator.CoGroupOperatorSets.CoGroupOperatorSetsPredicate.CoGroupOperatorWithoutFunction

java.lang.Object

org.apache.flink.api.java.operators.CoGroupOperator.CoGroupOperatorSets.CoGroupOperatorSetsPredicate.CoGroupOperatorWithoutFunction

Enclosing class:

CoGroupOperator.CoGroupOperatorSets.CoGroupOperatorSetsPredicate

public final class CoGroupOperator.CoGroupOperatorSets.CoGroupOperatorSetsPredicate.CoGroupOperatorWithoutFunction
extends Object

An intermediate CoGroupOperator without CoGroupFunction applied yet.

Method Summary

Modifier and Type	Method and Description
org.apache.flink.api.common.functions.Partitioner<?>	getPartitioner() Gets the custom partitioner used by this join, or null, if none is set.
CoGroupOperator.CoGroupOperatorSets.CoGroupOperatorSetsPredicate.CoGroupOperatorWithoutFunction	sortFirstGroup(int field, org.apache.flink.api.common.operators.Order order) Sorts Tuple elements within a group in the first input on the specified field in the specified Order.
CoGroupOperator.CoGroupOperatorSets.CoGroupOperatorSetsPredicate.CoGroupOperatorWithoutFunction	sortFirstGroup(String fieldExpression, org.apache.flink.api.common.operators.Order order) Sorts Pojo or Tuple elements within a group in the first input on the specified field in the specified Order.
CoGroupOperator.CoGroupOperatorSets.CoGroupOperatorSetsPredicate.CoGroupOperatorWithoutFunction	sortSecondGroup(int field, org.apache.flink.api.common.operators.Order order) Sorts Tuple elements within a group in the second input on the specified field in the specified Order.
CoGroupOperator.CoGroupOperatorSets.CoGroupOperatorSetsPredicate.CoGroupOperatorWithoutFunction	sortSecondGroup(String fieldExpression, org.apache.flink.api.common.operators.Order order) Sorts Pojo or Tuple elements within a group in the second input on the specified field in the specified Order.
<R> CoGroupOperator<I1,I2,R>	with(org.apache.flink.api.common.functions.CoGroupFunction<I1,I2,R> function) Finalizes a CoGroup transformation by applying a RichCoGroupFunction to groups of elements with identical keys.
CoGroupOperator.CoGroupOperatorSets.CoGroupOperatorSetsPredicate.CoGroupOperatorWithoutFunction	withPartitioner(org.apache.flink.api.common.functions.Partitioner<?> partitioner) Sets a custom partitioner for the CoGroup operation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

withPartitioner

public CoGroupOperator.CoGroupOperatorSets.CoGroupOperatorSetsPredicate.CoGroupOperatorWithoutFunction withPartitioner(org.apache.flink.api.common.functions.Partitioner<?> partitioner)

Sets a custom partitioner for the CoGroup operation. The partitioner will be called on the join keys to determine the partition a key should be assigned to. The partitioner is evaluated on both inputs in the same way.

NOTE: A custom partitioner can only be used with single-field CoGroup keys, not with composite CoGroup keys.

Parameters:

partitioner - The custom partitioner to be used.

Returns:

This CoGroup operator, to allow for function chaining.

getPartitioner

public org.apache.flink.api.common.functions.Partitioner<?> getPartitioner()

Gets the custom partitioner used by this join, or null, if none is set.

Returns:

The custom partitioner used by this join;

with

public <R> CoGroupOperator<I1,I2,R> with(org.apache.flink.api.common.functions.CoGroupFunction<I1,I2,R> function)

Finalizes a CoGroup transformation by applying a RichCoGroupFunction to groups of elements with identical keys.

Each CoGroupFunction call returns an arbitrary number of keys.

Parameters:

function - The CoGroupFunction that is called for all groups of elements with identical keys.

Returns:

An CoGroupOperator that represents the co-grouped result DataSet.

See Also:

RichCoGroupFunction, DataSet

sortFirstGroup

public CoGroupOperator.CoGroupOperatorSets.CoGroupOperatorSetsPredicate.CoGroupOperatorWithoutFunction sortFirstGroup(int field,
                                                                                                                      org.apache.flink.api.common.operators.Order order)

Sorts Tuple elements within a group in the first input on the specified field in the specified Order.

Note: Only groups of Tuple elements and Pojos can be sorted.

Groups can be sorted by multiple fields by chaining sortFirstGroup(int, Order) calls.

Parameters:

field - The Tuple field on which the group is sorted.

order - The Order in which the specified Tuple field is sorted.

Returns:

A SortedGrouping with specified order of group element.

See Also:

Tuple, Order

sortSecondGroup

public CoGroupOperator.CoGroupOperatorSets.CoGroupOperatorSetsPredicate.CoGroupOperatorWithoutFunction sortSecondGroup(int field,
                                                                                                                       org.apache.flink.api.common.operators.Order order)

Sorts Tuple elements within a group in the second input on the specified field in the specified Order.

Note: Only groups of Tuple elements and Pojos can be sorted.

Groups can be sorted by multiple fields by chaining sortSecondGroup(int, Order) calls.

Parameters:

field - The Tuple field on which the group is sorted.

order - The Order in which the specified Tuple field is sorted.

Returns:

A SortedGrouping with specified order of group element.

See Also:

Tuple, Order

sortFirstGroup

public CoGroupOperator.CoGroupOperatorSets.CoGroupOperatorSetsPredicate.CoGroupOperatorWithoutFunction sortFirstGroup(String fieldExpression,
                                                                                                                      org.apache.flink.api.common.operators.Order order)

Sorts Pojo or Tuple elements within a group in the first input on the specified field in the specified Order.

Groups can be sorted by multiple fields by chaining sortFirstGroup(String, Order) calls.

Parameters:

fieldExpression - The expression to the field on which the group is to be sorted.

order - The Order in which the specified Tuple field is sorted.

Returns:

A SortedGrouping with specified order of group element.

See Also:

Order

sortSecondGroup

public CoGroupOperator.CoGroupOperatorSets.CoGroupOperatorSetsPredicate.CoGroupOperatorWithoutFunction sortSecondGroup(String fieldExpression,
                                                                                                                       org.apache.flink.api.common.operators.Order order)

Sorts Pojo or Tuple elements within a group in the second input on the specified field in the specified Order.

Groups can be sorted by multiple fields by chaining sortSecondGroup(String, Order) calls.

Parameters:

fieldExpression - The expression to the field on which the group is to be sorted.

order - The Order in which the specified Tuple field is sorted.

Returns:

A SortedGrouping with specified order of group element.

See Also:

Order