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io.micronaut.data.hibernate.reactive.operations.DefaultHibernateReactiveRepositoryOperations Maven / Gradle / Ivy
/*
* Copyright 2017-2022 original authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.micronaut.data.hibernate.reactive.operations;
import io.micronaut.aop.InvocationContext;
import io.micronaut.context.annotation.EachBean;
import io.micronaut.context.annotation.Parameter;
import io.micronaut.core.annotation.AnnotationMetadata;
import io.micronaut.core.annotation.Internal;
import io.micronaut.core.annotation.Nullable;
import io.micronaut.core.convert.ConversionService;
import io.micronaut.core.type.Argument;
import io.micronaut.data.annotation.QueryHint;
import io.micronaut.data.connection.reactive.ReactorConnectionOperations;
import io.micronaut.data.hibernate.conf.RequiresReactiveHibernate;
import io.micronaut.data.hibernate.operations.AbstractHibernateOperations;
import io.micronaut.data.model.Page;
import io.micronaut.data.model.Pageable;
import io.micronaut.data.model.runtime.DeleteBatchOperation;
import io.micronaut.data.model.runtime.DeleteOperation;
import io.micronaut.data.model.runtime.InsertBatchOperation;
import io.micronaut.data.model.runtime.InsertOperation;
import io.micronaut.data.model.runtime.PagedQuery;
import io.micronaut.data.model.runtime.PreparedQuery;
import io.micronaut.data.model.runtime.RuntimeEntityRegistry;
import io.micronaut.data.model.runtime.RuntimePersistentEntity;
import io.micronaut.data.model.runtime.StoredQuery;
import io.micronaut.data.model.runtime.UpdateBatchOperation;
import io.micronaut.data.model.runtime.UpdateOperation;
import io.micronaut.data.operations.reactive.ReactorCriteriaRepositoryOperations;
import io.micronaut.data.runtime.convert.DataConversionService;
import io.micronaut.transaction.reactive.ReactorReactiveTransactionOperations;
import jakarta.persistence.EntityGraph;
import jakarta.persistence.FlushModeType;
import jakarta.persistence.Tuple;
import jakarta.persistence.criteria.CriteriaBuilder;
import jakarta.persistence.criteria.CriteriaDelete;
import jakarta.persistence.criteria.CriteriaQuery;
import jakarta.persistence.criteria.CriteriaUpdate;
import org.hibernate.SessionFactory;
import org.hibernate.query.Order;
import org.hibernate.reactive.stage.Stage;
import org.reactivestreams.Publisher;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import java.util.Collection;
import java.util.List;
import java.util.function.Function;
/**
* Hibernate reactive implementation of {@link io.micronaut.data.operations.reactive.ReactiveRepositoryOperations}
* and {@link ReactorReactiveTransactionOperations}.
*
* @author Denis Stepanov
* @since 3.5.0
*/
@RequiresReactiveHibernate
@EachBean(SessionFactory.class)
@Internal
final class DefaultHibernateReactiveRepositoryOperations extends AbstractHibernateOperations>
implements HibernateReactorRepositoryOperations, ReactorCriteriaRepositoryOperations {
private final SessionFactory sessionFactory;
private final Stage.SessionFactory stageSessionFactory;
private final ReactiveHibernateHelper helper;
private final ReactorConnectionOperations connectionOperations;
private final ReactorReactiveTransactionOperations transactionOperations;
DefaultHibernateReactiveRepositoryOperations(SessionFactory sessionFactory,
RuntimeEntityRegistry runtimeEntityRegistry,
DataConversionService dataConversionService,
@Parameter ReactorConnectionOperations connectionOperations,
@Parameter ReactorReactiveTransactionOperations transactionOperations) {
super(runtimeEntityRegistry, dataConversionService);
this.sessionFactory = sessionFactory;
this.stageSessionFactory = sessionFactory.unwrap(Stage.SessionFactory.class);
this.connectionOperations = connectionOperations;
this.transactionOperations = transactionOperations;
this.helper = new ReactiveHibernateHelper(stageSessionFactory);
}
@Override
protected void setParameter(Stage.AbstractQuery query, String parameterName, Object value) {
query.setParameter(parameterName, value);
}
@Override
protected void setParameter(Stage.AbstractQuery query, String parameterName, Object value, Argument argument) {
query.setParameter(parameterName, value);
}
@Override
protected void setParameterList(Stage.AbstractQuery query, String parameterName, Collection value) {
query.setParameter(parameterName, value);
}
@Override
protected void setParameterList(Stage.AbstractQuery query, String parameterName, Collection value, Argument argument) {
query.setParameter(parameterName, value);
}
@Override
protected void setParameter(Stage.AbstractQuery query, int parameterIndex, Object value) {
query.setParameter(parameterIndex, value);
}
@Override
protected void setParameter(Stage.AbstractQuery query, int parameterIndex, Object value, Argument argument) {
query.setParameter(parameterIndex, value);
}
@Override
protected void setParameterList(Stage.AbstractQuery query, int parameterIndex, Collection value) {
query.setParameter(parameterIndex, value);
}
@Override
protected void setParameterList(Stage.AbstractQuery query, int parameterIndex, Collection value, Argument argument) {
query.setParameter(parameterIndex, value);
}
@Override
protected void setHint(Stage.SelectionQuery query, String hintName, Object value) {
if (value instanceof EntityGraph plan) {
query.setPlan(plan);
return;
}
throw new IllegalStateException("Unrecognized parameter: " + hintName + " with value: " + value);
}
@Override
protected void setMaxResults(Stage.SelectionQuery query, int max) {
query.setMaxResults(max);
}
@Override
protected void setOffset(Stage.SelectionQuery query, int offset) {
query.setFirstResult(offset);
}
@Override
protected void setOrder(Stage.SelectionQuery query, List> orders) {
query.setOrder((List) orders);
}
@Override
protected EntityGraph getEntityGraph(Stage.Session session, Class entityType, String graphName) {
return session.getEntityGraph(entityType, graphName);
}
@Override
protected EntityGraph createEntityGraph(Stage.Session session, Class entityType) {
return session.createEntityGraph(entityType);
}
@Override
protected RuntimePersistentEntity getEntity(Class type) {
return runtimeEntityRegistry.getEntity(type);
}
@Override
public CriteriaBuilder getCriteriaBuilder() {
return stageSessionFactory.getCriteriaBuilder();
}
@Override
public Mono flush() {
return withSession(helper::flush);
}
@Override
public Mono persistAndFlush(Object entity) {
return operation(session -> helper.persist(session, entity).then(helper.flush(session)));
}
@Override
public Mono findOne(Class type, Object id) {
return operation(session -> helper.find(session, type, id));
}
@Override
public Mono exists(PreparedQuery preparedQuery) {
return findOne(preparedQuery).hasElement();
}
@Override
protected Stage.SelectionQuery createNativeQuery(Stage.Session session, String query, Class resultType) {
if (resultType == null) {
return session.createNativeQuery(query);
}
return session.createNativeQuery(query, resultType);
}
@Override
protected Stage.SelectionQuery createQuery(Stage.Session session, String query, Class resultType) {
if (resultType == null) {
return session.createQuery(query);
}
return session.createQuery(query, resultType);
}
@Override
protected Stage.SelectionQuery createQuery(Stage.Session session, CriteriaQuery criteriaQuery) {
return session.createQuery(criteriaQuery);
}
@Override
public Mono findOne(PreparedQuery preparedQuery) {
return operation(session -> {
// TODO: Until this issue https://github.com/hibernate/hibernate-reactive/issues/1551 is fixed
// we should not limit maxResults or else we could start having bugs
// FirstResultCollector collector = new FirstResultCollector<>(!preparedQuery.isNative());
FirstResultCollector collector = new FirstResultCollector<>(false);
collectFindOne(session, preparedQuery, collector);
return collector.result;
});
}
@Override
public Mono findOptional(Class type, Object id) {
return findOne(type, id);
}
@Override
public Mono findOptional(PreparedQuery preparedQuery) {
return findOne(preparedQuery);
}
@Override
public Flux findAll(PagedQuery pagedQuery) {
return operationFlux(session -> findPaged(session, pagedQuery));
}
@Override
public Mono> findPage(PagedQuery pagedQuery) {
return operation(session -> findPaged(session, pagedQuery).collectList()
.flatMap(resultList -> countOf(session, pagedQuery.getRootEntity(), pagedQuery.getPageable())
.map(total -> Page.of(resultList, pagedQuery.getPageable(), total))));
}
@Override
public Mono count(PagedQuery pagedQuery) {
return operation(session -> countOf(session, Long.class, null));
}
private Flux findPaged(Stage.Session session, PagedQuery pagedQuery) {
ListResultCollector collector = new ListResultCollector<>();
collectPagedResults(sessionFactory.getCriteriaBuilder(), session, pagedQuery, collector);
return collector.result;
}
private Mono countOf(Stage.Session session, Class entity, @Nullable Pageable pageable) {
SingleResultCollector collector = new SingleResultCollector<>();
collectCountOf(sessionFactory.getCriteriaBuilder(), session, entity, pageable, collector);
return collector.result;
}
@Override
public Flux findAll(PreparedQuery preparedQuery) {
return operationFlux(session -> {
ListResultCollector resultCollector = new ListResultCollector<>();
collectFindAll(session, preparedQuery, resultCollector);
return resultCollector.result;
});
}
@Override
public Mono persist(InsertOperation operation) {
return operation(session -> {
StoredQuery storedQuery = operation.getStoredQuery();
T entity = operation.getEntity();
Mono result;
if (storedQuery != null) {
result = executeEntityUpdate(session, storedQuery, operation.getInvocationContext(), entity)
.thenReturn(entity);
} else {
result = helper.persist(session, entity);
}
return flushIfNecessary(result, session, operation.getAnnotationMetadata());
});
}
@Override
public Mono update(UpdateOperation operation) {
return operation(session -> {
StoredQuery storedQuery = operation.getStoredQuery();
T entity = operation.getEntity();
Mono result;
if (storedQuery != null) {
result = executeEntityUpdate(session, storedQuery, operation.getInvocationContext(), entity)
.thenReturn(entity);
} else {
result = helper.merge(session, entity);
}
return flushIfNecessary(result, session, operation.getAnnotationMetadata());
});
}
private Mono executeEntityUpdate(Stage.Session session,
StoredQuery storedQuery,
InvocationContext invocationContext,
T entity) {
Stage.MutationQuery query = session.createMutationQuery(storedQuery.getQuery());
bindParameters(query, storedQuery, invocationContext, entity);
return helper.executeUpdate(query);
}
@Override
public Flux updateAll(UpdateBatchOperation operation) {
return operationFlux(session -> {
StoredQuery storedQuery = operation.getStoredQuery();
Flux result;
if (storedQuery != null) {
result = Flux.fromIterable(operation)
.concatMap(t -> executeEntityUpdate(session, storedQuery, operation.getInvocationContext(), t).thenReturn(t));
} else {
result = helper.mergeAll(session, operation);
}
return flushIfNecessaryFlux(result, session, operation.getAnnotationMetadata());
});
}
@Override
public Flux persistAll(InsertBatchOperation operation) {
return operationFlux(session -> {
StoredQuery storedQuery = operation.getStoredQuery();
Flux result;
if (storedQuery != null) {
result = Flux.fromIterable(operation)
.concatMap(t -> executeEntityUpdate(session, storedQuery, operation.getInvocationContext(), t).thenReturn(t));
} else {
result = helper.persistAll(session, operation);
}
return flushIfNecessaryFlux(result, session, operation.getAnnotationMetadata());
});
}
@Override
public Mono executeUpdate(PreparedQuery preparedQuery) {
return operation(session -> {
String query = preparedQuery.getQuery();
Stage.MutationQuery q = session.createMutationQuery(query);
bindParameters(q, preparedQuery, true);
Mono result = helper.executeUpdate(q).cast(Number.class);
return flushIfNecessary(result, session, preparedQuery.getAnnotationMetadata());
});
}
@Override
public Mono executeDelete(PreparedQuery preparedQuery) {
return executeUpdate(preparedQuery);
}
@Override
public Mono delete(DeleteOperation operation) {
return operation(session -> {
StoredQuery storedQuery = operation.getStoredQuery();
Mono result;
if (storedQuery != null) {
result = executeEntityUpdate(session, storedQuery, operation.getInvocationContext(), operation.getEntity()).cast(Number.class);
} else {
result = helper.remove(session, operation.getEntity()).thenReturn(1);
}
return flushIfNecessary(result, session, operation.getAnnotationMetadata());
});
}
@Override
public Mono deleteAll(DeleteBatchOperation operation) {
return operation(session -> {
StoredQuery storedQuery = operation.getStoredQuery();
Mono result;
if (storedQuery != null) {
result = Flux.fromIterable(operation)
.concatMap(entity -> executeEntityUpdate(session, storedQuery, operation.getInvocationContext(), entity))
.reduce(0, (i1, i2) -> i1 + i2)
.cast(Number.class);
} else {
result = helper.removeAll(session, operation);
}
return flushIfNecessary(result, session, operation.getAnnotationMetadata());
});
}
private Mono flushIfNecessary(Mono m, Stage.Session session, AnnotationMetadata annotationMetadata) {
if (annotationMetadata.hasAnnotation(QueryHint.class)) {
FlushModeType flushModeType = getFlushModeType(annotationMetadata);
if (flushModeType == FlushModeType.AUTO) {
return m.flatMap(t -> helper.flush(session).thenReturn(t));
}
}
return m;
}
private Flux flushIfNecessaryFlux(Flux flux, Stage.Session session, AnnotationMetadata annotationMetadata) {
return flushIfNecessary(flux.collectList(), session, annotationMetadata).flatMapMany(Flux::fromIterable);
}
private Mono operation(Function> work) {
return transactionOperations.withTransactionMono(tx -> work.apply(tx.getConnection()));
}
private Flux operationFlux(Function> work) {
return transactionOperations.withTransactionFlux(tx -> work.apply(tx.getConnection()));
}
@Override
public Mono withSession(Function> work) {
return connectionOperations.withConnectionMono(status -> work.apply(status.getConnection()));
}
@Override
public Flux withSessionFlux(Function> work) {
return connectionOperations.withConnectionFlux(status -> work.apply(status.getConnection()));
}
@Override
public ConversionService getConversionService() {
return dataConversionService;
}
@Override
public Mono findOne(CriteriaQuery query) {
return withSession(session -> helper.monoFromCompletionStage(() -> session.createQuery(query).getSingleResult()));
}
@Override
public Publisher exists(CriteriaQuery query) {
return withSession(session -> helper.monoFromCompletionStage(() -> session.createQuery(query).setMaxResults(1).getResultList().thenApply(l -> !l.isEmpty())));
}
@Override
public Flux findAll(CriteriaQuery query) {
return withSession(session -> helper.monoFromCompletionStage(() -> session.createQuery(query).getResultList()))
.flatMapIterable(res -> res);
}
@Override
public Flux findAll(CriteriaQuery query, int offset, int limit) {
return withSession(session -> helper.monoFromCompletionStage(() -> {
Stage.SelectionQuery sessionQuery = session.createQuery(query);
if (offset > 0) {
sessionQuery = sessionQuery.setFirstResult(offset);
}
if (limit > 0) {
sessionQuery = sessionQuery.setMaxResults(limit);
}
return sessionQuery.getResultList();
})).flatMapIterable(res -> res);
}
@Override
public Mono updateAll(CriteriaUpdate query) {
return withSession(session -> helper.monoFromCompletionStage(() -> session.createQuery(query).executeUpdate()).map(n -> n));
}
@Override
public Mono deleteAll(CriteriaDelete query) {
return withSession(session -> helper.monoFromCompletionStage(() -> session.createQuery(query).executeUpdate()).map(n -> n));
}
private final class ListResultCollector extends ResultCollector {
private Flux result;
@Override
protected void collectTuple(Stage.SelectionQuery query, Function fn) {
Flux tuples = (Flux) helper.list(query);
result = tuples.map(fn);
}
@Override
protected void collect(Stage.SelectionQuery query) {
result = (Flux) helper.list(query);
}
}
private final class SingleResultCollector extends ResultCollector {
private Mono result;
@Override
protected void collectTuple(Stage.SelectionQuery query, Function fn) {
result = ((Mono) helper.singleResult(query)).map(fn);
}
@Override
protected void collect(Stage.SelectionQuery query) {
result = (Mono) helper.singleResult(query);
}
}
private final class FirstResultCollector extends ResultCollector {
private final boolean limitOne;
private Mono result;
private FirstResultCollector(boolean limitOne) {
this.limitOne = limitOne;
}
@Override
protected void collectTuple(Stage.SelectionQuery query, Function fn) {
result = getFirst((Stage.SelectionQuery) query).map(fn);
}
@Override
protected void collect(Stage.SelectionQuery query) {
result = getFirst((Stage.SelectionQuery) query);
}
private Mono getFirst(Stage.SelectionQuery q) {
if (limitOne) {
q.setMaxResults(1);
}
return helper.list(q).next();
}
}
}
