org.omnaest.utils.structure.table.concrete.predicates.internal.joiner
Class PredicateJoinerCollector<E>

java.lang.Object
  org.omnaest.utils.structure.table.concrete.predicates.internal.joiner.PredicateJoinerCollector<E>

All Implemented Interfaces:

Serializable, PredicateJoiner<E>, TableSelectable.Predicate<E>

public class PredicateJoinerCollector<E>
extends Object
implements PredicateJoiner<E>

A PredicateJoinerCollector holds an internal Set of PredicateJoiner instances and collects and merges their PredicateJoiner#determineJoinableStripeDataSet(StripeData,TableBlock, TableBlock) results by determining the intersection of them.

Author:

Omnaest

See Also:

PredicateJoiner, TableSelectable.Predicate, Serialized Form

Field Summary

protected Set<PredicateJoiner<E>>

predicateJoinerSet

Constructor Summary

PredicateJoinerCollector(Set<PredicateJoiner<E>> predicateJoinerSet)

Method Summary

boolean	affectsBothTableBlocks(TableBlock<E> tableBlockLeft, TableBlock<E> tableBlockRight) Returns true if the given TableBlocks are affected by this PredicateJoiner
Set<TableInternal.StripeData<E>>	determineJoinableStripeDataSet(TableInternal.StripeData<E> stripeData, TableBlock<E> tableBlockLeft, TableBlock<E> tableBlockRight) Provides the TableInternal.StripeData instances from the right TableBlock which should be joined with the given TableInternal.StripeData of the left TableBlock.
Table.Column<E>[]	getRequiredColumns() Returns the Table.Columns which are required for this PredicateJoiner

Methods inherited from class java.lang.Object

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

Field Detail

predicateJoinerSet

protected Set<PredicateJoiner<E>> predicateJoinerSet

Constructor Detail

PredicateJoinerCollector

public PredicateJoinerCollector(Set<PredicateJoiner<E>> predicateJoinerSet)

Parameters:

predicateJoinerSet - : ordered set of PredicateJoiner

See Also:

PredicateJoinerCollector

Method Detail

determineJoinableStripeDataSet

public Set<TableInternal.StripeData<E>> determineJoinableStripeDataSet(TableInternal.StripeData<E> stripeData,
                                                                       TableBlock<E> tableBlockLeft,
                                                                       TableBlock<E> tableBlockRight)

Description copied from interface: PredicateJoiner

Provides the TableInternal.StripeData instances from the right TableBlock which should be joined with the given TableInternal.StripeData of the left TableBlock. The Set will be ordered.

Specified by:

determineJoinableStripeDataSet in interface PredicateJoiner<E>

Returns:

affectsBothTableBlocks

public boolean affectsBothTableBlocks(TableBlock<E> tableBlockLeft,
                                      TableBlock<E> tableBlockRight)

Description copied from interface: PredicateJoiner

Returns true if the given TableBlocks are affected by this PredicateJoiner

Specified by:

affectsBothTableBlocks in interface PredicateJoiner<E>

Returns:

getRequiredColumns

public Table.Column<E>[] getRequiredColumns()

Description copied from interface: PredicateJoiner

Returns the Table.Columns which are required for this PredicateJoiner

Specified by:

getRequiredColumns in interface PredicateJoiner<E>

Returns: