org.springframework.data.mongodb.core

Interface ExecutableFindOperation.TerminatingFind<T>

All Known Subinterfaces:

ExecutableFindOperation.ExecutableFind<T>, ExecutableFindOperation.FindWithCollection<T>, ExecutableFindOperation.FindWithProjection<T>, ExecutableFindOperation.FindWithQuery<T>

Enclosing interface:

ExecutableFindOperation

public static interface ExecutableFindOperation.TerminatingFind<T>

Trigger find execution by calling one of the terminating methods.

Since:

2.0

Author:

Christoph Strobl

Method Summary

Modifier and Type	Method and Description
List<T>	all() Get all matching elements.
long	count() Get the number of matching elements.
boolean	exists() Check for the presence of matching elements.
default Optional<T>	first() Get the first or no result.
T	firstValue() Get the first or no result.
default Optional<T>	one() Get exactly zero or one result.
T	oneValue() Get exactly zero or one result.
Stream<T>	stream() Stream all matching elements.

Method Detail

one

default Optional<T> one()

Get exactly zero or one result.

Returns:

Optional.empty() if no match found.

Throws:

IncorrectResultSizeDataAccessException - if more than one match found.

oneValue

@Nullable
T oneValue()

Get exactly zero or one result.

Returns:

null if no match found.

Throws:

IncorrectResultSizeDataAccessException - if more than one match found.

first

default Optional<T> first()

Get the first or no result.

Returns:

Optional.empty() if no match found.

firstValue

@Nullable
T firstValue()

Get the first or no result.

Returns:

null if no match found.

all

List<T> all()

Get all matching elements.

Returns:

never null.

stream

Stream<T> stream()

Stream all matching elements.

Returns:

a Stream that wraps the a Mongo DB Cursor that needs to be closed. Never null.

count

long count()

Get the number of matching elements.

Returns:

total number of matching elements.

exists

boolean exists()

Check for the presence of matching elements.

Returns:

true if at least one matching element exists.