com.speedment.runtime.join

Interface JoinComponent

public interface JoinComponent

a JoinComponent can be used to create builders for creating Join objects. Join objects, in turn, can be used to stream over joined tables.

It is unspecified if objects returned by builder-type of objects return itself or a new builder. Users should make no assumption of either case and use a fluent API style of programming.

All methods that takes objects will throw a NullPointerException if provided with one or several null values.

Intermediate builder methods are not thread safe.

Currently, this component can build joins of grade 2, 3, 4, 5, 6, 7, 8, 9 or 10.

Since:

3.1.0

Author:

Per Minborg

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_DEGREE The maximum number of tables than can be joined.

Method Summary

Modifier and Type	Method and Description
<T0> JoinBuilder1<T0>	from(com.speedment.runtime.config.identifier.TableIdentifier<T0> firstManager) Adds a provided firstManager to the collection of joined managers.

Field Detail

MAX_DEGREE

static final int MAX_DEGREE

The maximum number of tables than can be joined.

See Also:

Constant Field Values

Method Detail

from

<T0> JoinBuilder1<T0> from(com.speedment.runtime.config.identifier.TableIdentifier<T0> firstManager)

Adds a provided firstManager to the collection of joined managers. Rows are joined from the provided firstManager depending on how subsequent managers are added to the builder.

Type Parameters:

T0 - type of entities for the first manager

Parameters:

firstManager - to use

Returns:

a builder where the provided firstManager is added

Throws:

NullPointerException - if the provided firstManager is null