org.omnaest.utils.structure.table.concrete.predicates.internal.joiner
Interface PredicateJoiner<E>

Type Parameters:

E -

All Superinterfaces:

Serializable, TableSelectable.Predicate<E>

All Known Implementing Classes:

EqualColumns, PredicateJoinerCollector

public interface PredicateJoiner<E>
extends TableSelectable.Predicate<E>

Every PredicateJoiner should be represented by a static factory method within the PredicateFactory.

A PredicateJoiner will provide the respecting TableInternal.StripeData instances from another TableBlock when a TableInternal.StripeData is given from a previous TableBlock. This allows to implement Joins which uses indexes.

Author:

Omnaest

See Also:

PredicateFactory, TableSelectable.Predicate, TableBlock

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

Method Detail

determineJoinableStripeDataSet

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. The Set will be ordered.

Parameters:

stripeData -

tableBlockLeft -

tableBlockRight -

Returns:

affectsBothTableBlocks

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

Returns true if the given TableBlocks are affected by this PredicateJoiner

Parameters:

tableBlockLeft -

tableBlockRight -

Returns:

getRequiredColumns

Table.Column<E>[] getRequiredColumns()

Returns the Table.Columns which are required for this PredicateJoiner

Returns: