Package org.springframework.data.r2dbc.core

Interface ReactiveSelectOperation

All Known Subinterfaces:

FluentR2dbcOperations, R2dbcEntityOperations

All Known Implementing Classes:

R2dbcEntityTemplate

public interface ReactiveSelectOperation

The ReactiveSelectOperation interface allows creation and execution of SELECT operations in a fluent API style.

The starting domainType is used for mapping the Query provided via matching. By default, the originating domainType is also used for mapping back the result from the Row. However, it is possible to define an different returnType via as to mapping the result.

By default, the table to operate on is derived from the initial domainType and can be defined there via the Table annotation. Using inTable allows to override the table name for the execution.

     
         select(Human.class)
             .from("star_wars")
             .as(Jedi.class)
             .matching(query(where("firstname").is("luke")))
             .all();
     
 

Since:

1.1

Author:

Mark Paluch

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	ReactiveSelectOperation.ReactiveSelect<T>	The ReactiveSelectOperation.ReactiveSelect interface provides methods for constructing SELECT operations in a fluent way.
static interface	ReactiveSelectOperation.SelectWithProjection<T>	Result type override (optional).
static interface	ReactiveSelectOperation.SelectWithQuery<T>	Define a Query used as the filter for the SELECT.
static interface	ReactiveSelectOperation.SelectWithTable<T>	Table override (optional).
static interface	ReactiveSelectOperation.TerminatingSelect<T>	Trigger SELECT execution by calling one of the terminating methods.

Method Summary

Modifier and Type	Method	Description
<T> ReactiveSelectOperation.ReactiveSelect<T>	select(Class<T> domainType)	Begin creating a SELECT operation for the given domainType.

Method Details

select

<T> ReactiveSelectOperation.ReactiveSelect<T> select(Class<T> domainType)

Begin creating a SELECT operation for the given domainType.

Type Parameters:

T - type of the application domain object.

Parameters:

domainType - type of the domain object to query; must not be null.

Returns:

new instance of ReactiveSelectOperation.ReactiveSelect.

Throws:

IllegalArgumentException - if domainType is null.

See Also:

• ReactiveSelectOperation.ReactiveSelect