org.springframework.data.cassandra.repository.support.SimpleReactiveCassandraRepository Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of spring-data-cassandra Show documentation
Show all versions of spring-data-cassandra Show documentation
Cassandra support for Spring Data
/*
* Copyright 2016-2024 the original author or 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 org.springframework.data.cassandra.repository.support;
import static org.springframework.data.cassandra.core.query.Criteria.*;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import java.util.List;
import org.reactivestreams.Publisher;
import org.springframework.data.cassandra.core.EntityWriteResult;
import org.springframework.data.cassandra.core.InsertOptions;
import org.springframework.data.cassandra.core.ReactiveCassandraOperations;
import org.springframework.data.cassandra.core.mapping.BasicCassandraPersistentEntity;
import org.springframework.data.cassandra.core.mapping.CassandraPersistentProperty;
import org.springframework.data.cassandra.core.query.Query;
import org.springframework.data.cassandra.repository.ReactiveCassandraRepository;
import org.springframework.data.cassandra.repository.query.CassandraEntityInformation;
import org.springframework.data.mapping.context.AbstractMappingContext;
import org.springframework.util.Assert;
/**
* Reactive repository base implementation for Cassandra.
*
* @author Mark Paluch
* @author Christoph Strobl
* @author Jens Schauder
* @since 2.0
*/
public class SimpleReactiveCassandraRepository implements ReactiveCassandraRepository {
private static final InsertOptions INSERT_NULLS = InsertOptions.builder().withInsertNulls().build();
private final AbstractMappingContext, CassandraPersistentProperty> mappingContext;
private final CassandraEntityInformation entityInformation;
private final ReactiveCassandraOperations operations;
/**
* Create a new {@link SimpleReactiveCassandraRepository} for the given {@link CassandraEntityInformation} and
* {@link ReactiveCassandraOperations}.
*
* @param metadata must not be {@literal null}.
* @param operations must not be {@literal null}.
*/
public SimpleReactiveCassandraRepository(CassandraEntityInformation metadata,
ReactiveCassandraOperations operations) {
Assert.notNull(metadata, "CassandraEntityInformation must not be null");
Assert.notNull(operations, "ReactiveCassandraOperations must not be null");
this.entityInformation = metadata;
this.operations = operations;
this.mappingContext = operations.getConverter().getMappingContext();
}
// -------------------------------------------------------------------------
// Methods from ReactiveCrudRepository
// -------------------------------------------------------------------------
@Override
public Mono save(S entity) {
Assert.notNull(entity, "Entity must not be null");
BasicCassandraPersistentEntity persistentEntity = this.mappingContext.getPersistentEntity(entity.getClass());
if (persistentEntity != null && persistentEntity.hasVersionProperty()) {
if (!this.entityInformation.isNew(entity)) {
return this.operations.update(entity);
}
}
return this.operations.insert(entity, INSERT_NULLS).map(EntityWriteResult::getEntity);
}
@Override
public Flux saveAll(Iterable entities) {
Assert.notNull(entities, "The given Iterable of entities must not be null");
return saveAll(Flux.fromIterable(entities));
}
@Override
public Flux saveAll(Publisher entityStream) {
Assert.notNull(entityStream, "The given Publisher of entities must not be null");
return Flux.from(entityStream).flatMap(this::save);
}
@Override
public Mono findById(ID id) {
Assert.notNull(id, "The given id must not be null");
return this.operations.selectOneById(id, this.entityInformation.getJavaType());
}
@Override
public Mono findById(Publisher publisher) {
Assert.notNull(publisher, "The Publisher of ids must not be null");
return Mono.from(publisher).flatMap(this::findById);
}
@Override
public Mono existsById(ID id) {
Assert.notNull(id, "The given id must not be null");
return this.operations.exists(id, this.entityInformation.getJavaType());
}
@Override
public Mono existsById(Publisher publisher) {
Assert.notNull(publisher, "The Publisher of ids must not be null");
return Mono.from(publisher).flatMap(this::existsById);
}
@Override
public Flux findAll() {
return this.operations.select(Query.empty(), this.entityInformation.getJavaType());
}
@Override
public Flux findAllById(Iterable ids) {
Assert.notNull(ids, "The given Iterable of ids must not be null");
if (FindByIdQuery.hasCompositeKeys(ids, this.mappingContext)) {
return findAllById(Flux.fromIterable(ids));
}
if (!ids.iterator().hasNext()) {
return Flux.empty();
}
return this.operations.select(createIdsInCollectionQuery(ids), this.entityInformation.getJavaType());
}
@Override
public Flux findAllById(Publisher idStream) {
Assert.notNull(idStream, "The given Publisher of ids must not be null");
return Flux.from(idStream).flatMap(this::findById);
}
@Override
public Mono count() {
return this.operations.count(this.entityInformation.getJavaType());
}
@Override
public Mono deleteById(ID id) {
Assert.notNull(id, "The given id must not be null");
return this.operations.deleteById(id, this.entityInformation.getJavaType()).then();
}
@Override
public Mono deleteById(Publisher publisher) {
Assert.notNull(publisher, "The Publisher of ids must not be null");
return Mono.from(publisher).flatMap(this::deleteById).then();
}
@Override
public Mono delete(T entity) {
Assert.notNull(entity, "The given entity must not be null");
return this.operations.delete(entity).then();
}
@Override
public Mono deleteAllById(Iterable ids) {
Assert.notNull(ids, "The given Iterable of ids must not be null");
if (FindByIdQuery.hasCompositeKeys(ids, this.mappingContext)) {
return Flux.fromIterable(ids).flatMap(this::deleteById).then();
}
if (!ids.iterator().hasNext()) {
return Mono.empty();
}
return this.operations.delete(createIdsInCollectionQuery(ids), this.entityInformation.getJavaType()).then();
}
@Override
public Mono deleteAll(Iterable entities) {
Assert.notNull(entities, "The given Iterable of entities must not be null");
return Flux.fromIterable(entities).flatMap(this.operations::delete).then();
}
@Override
public Mono deleteAll(Publisher entityStream) {
Assert.notNull(entityStream, "The given Publisher of entities must not be null");
return Flux.from(entityStream).flatMap(this.operations::delete).then();
}
@Override
public Mono deleteAll() {
return this.operations.truncate(this.entityInformation.getJavaType());
}
// -------------------------------------------------------------------------
// Methods from ReactiveCrudRepository
// -------------------------------------------------------------------------
@Override
public Mono insert(S entity) {
Assert.notNull(entity, "Entity must not be null");
return this.operations.insert(entity);
}
@Override
public Flux insert(Iterable entities) {
Assert.notNull(entities, "The given Iterable of entities must not be null");
return Flux.fromIterable(entities).flatMap(this.operations::insert);
}
@Override
public Flux insert(Publisher entityStream) {
Assert.notNull(entityStream, "The given Publisher of entities must not be null");
return Flux.from(entityStream).flatMap(this.operations::insert);
}
private Query createIdsInCollectionQuery(Iterable ids) {
FindByIdQuery query = FindByIdQuery.forIds(ids);
List