io.micronaut.data.repository.jpa.criteria

Interface QuerySpecification<T>

Type Parameters:

T - The entity root type

public interface QuerySpecification<T>

Criteria query specification. Based on Spring Data's Specification.

Since:

3.2

Author:

Denis Stepanov

Field Summary

Fields

Modifier and Type	Field and Description
static QuerySpecification<?>	ALL Include all specification.

Method Summary

Modifier and Type	Method and Description
default QuerySpecification<T>	and(PredicateSpecification<T> other) ANDs the given PredicateSpecification to the current one.
default QuerySpecification<T>	and(QuerySpecification<T> other) ANDs the given QuerySpecification to the current one.
static <T> QuerySpecification<T>	not(QuerySpecification<T> spec) Negates the given QuerySpecification.
default QuerySpecification<T>	or(PredicateSpecification<T> other) ORs the given PredicateSpecification to the current one.
default QuerySpecification<T>	or(QuerySpecification<T> other) ORs the given specification to the current one.
jakarta.persistence.criteria.Predicate	toPredicate(jakarta.persistence.criteria.Root<T> root, jakarta.persistence.criteria.CriteriaQuery<?> query, jakarta.persistence.criteria.CriteriaBuilder criteriaBuilder) Creates a WHERE clause predicate for the given entity Root and a criteria query.
static <T> QuerySpecification<T>	where(PredicateSpecification<T> spec) Simple static factory method to add some syntactic sugar around a PredicateSpecification.
static <T> QuerySpecification<T>	where(QuerySpecification<T> spec) Simple static factory method to add some syntactic sugar around a QuerySpecification.

Field Detail

ALL

static final QuerySpecification<?> ALL

Include all specification.

Method Detail

not

@NonNull
static <T> QuerySpecification<T> not(@Nullable
                                              QuerySpecification<T> spec)

Negates the given QuerySpecification.

Type Parameters:

T - the type of the Root the resulting Specification operates on.

Parameters:

spec - The specification.

Returns:

negated specification}.

where

@NonNull
static <T> QuerySpecification<T> where(@Nullable
                                                QuerySpecification<T> spec)

Simple static factory method to add some syntactic sugar around a QuerySpecification.

Type Parameters:

T - the type of the Root the resulting Specification operates on.

Parameters:

spec - The specification.

Returns:

guaranteed to be not null.

where

@NonNull
static <T> QuerySpecification<T> where(@Nullable
                                                PredicateSpecification<T> spec)

Simple static factory method to add some syntactic sugar around a PredicateSpecification.

Type Parameters:

T - the type of the Root the resulting Specification operates on.

Parameters:

spec - The specification.

Returns:

query specification.

and

@NonNull
default QuerySpecification<T> and(@Nullable
                                           QuerySpecification<T> other)

ANDs the given QuerySpecification to the current one.

Parameters:

other - The other predicate.

Returns:

The conjunction of the specifications

or

@NonNull
default QuerySpecification<T> or(@Nullable
                                          QuerySpecification<T> other)

ORs the given specification to the current one.

Parameters:

other - The other predicate.

Returns:

The disjunction of the specifications

and

@NonNull
default QuerySpecification<T> and(@Nullable
                                           PredicateSpecification<T> other)

ANDs the given PredicateSpecification to the current one.

Parameters:

other - The other predicate.

Returns:

The conjunction of the specifications

or

@NonNull
default QuerySpecification<T> or(@Nullable
                                          PredicateSpecification<T> other)

ORs the given PredicateSpecification to the current one.

Parameters:

other - The other predicate.

Returns:

The disjunction of the specifications

toPredicate

@Nullable
jakarta.persistence.criteria.Predicate toPredicate(@NonNull
                                                             jakarta.persistence.criteria.Root<T> root,
                                                             @NonNull
                                                             jakarta.persistence.criteria.CriteriaQuery<?> query,
                                                             @NonNull
                                                             jakarta.persistence.criteria.CriteriaBuilder criteriaBuilder)

Creates a WHERE clause predicate for the given entity Root and a criteria query.

Parameters:

root - The entity root

query - The criteria query

criteriaBuilder - The criteria builder

Returns:

a Predicate