org.springframework.data.r2dbc.core

Interface ReactiveSelectOperation.TerminatingSelect<T>

All Known Subinterfaces:

ReactiveSelectOperation.ReactiveSelect<T>, ReactiveSelectOperation.SelectWithProjection<T>, ReactiveSelectOperation.SelectWithQuery<T>, ReactiveSelectOperation.SelectWithTable<T>

Enclosing interface:

ReactiveSelectOperation

public static interface ReactiveSelectOperation.TerminatingSelect<T>

Trigger SELECT execution by calling one of the terminating methods.

Method Summary

Modifier and Type	Method and Description
reactor.core.publisher.Flux<T>	all() Get all matching elements.
reactor.core.publisher.Mono<Long>	count() Get the number of matching elements.
reactor.core.publisher.Mono<Boolean>	exists() Check for the presence of matching elements.
reactor.core.publisher.Mono<T>	first() Get the first result or no result.
reactor.core.publisher.Mono<T>	one() Get exactly zero or one result.

Method Detail

count

reactor.core.publisher.Mono<Long> count()

Get the number of matching elements.

Returns:

a Mono emitting the total number of matching elements; never null.

See Also:

Mono

exists

reactor.core.publisher.Mono<Boolean> exists()

Check for the presence of matching elements.

Returns:

a Mono emitting true if at least one matching element exists; never null.

See Also:

Mono

first

reactor.core.publisher.Mono<T> first()

Get the first result or no result.

Returns:

the first result or Mono.empty() if no match found; never null.

See Also:

Mono

one

reactor.core.publisher.Mono<T> one()

Get exactly zero or one result.

Returns:

exactly one result or Mono.empty() if no match found; never null.

Throws:

IncorrectResultSizeDataAccessException - if more than one match found.

See Also:

Mono

all

reactor.core.publisher.Flux<T> all()

Get all matching elements.

Returns:

all matching elements; never null.

See Also:

Flux