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org.springframework.data.cassandra.core.ReactiveCassandraBatchTemplate Maven / Gradle / Ivy
/*
* Copyright 2018-2021 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.core;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.atomic.AtomicBoolean;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import org.springframework.data.cassandra.core.convert.CassandraConverter;
import org.springframework.data.cassandra.core.convert.UpdateMapper;
import org.springframework.data.cassandra.core.cql.WriteOptions;
import org.springframework.data.cassandra.core.mapping.BasicCassandraPersistentEntity;
import org.springframework.data.cassandra.core.mapping.CassandraMappingContext;
import org.springframework.data.cassandra.core.mapping.CassandraPersistentEntity;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;
import com.datastax.oss.driver.api.core.cql.BatchStatement;
import com.datastax.oss.driver.api.core.cql.BatchStatementBuilder;
import com.datastax.oss.driver.api.core.cql.BatchType;
import com.datastax.oss.driver.api.core.cql.BatchableStatement;
import com.datastax.oss.driver.api.core.cql.SimpleStatement;
/**
* Default implementation for {@link ReactiveCassandraBatchOperations}.
*
* @author Oleh Dokuka
* @author Mark Paluch
* @since 2.1
*/
class ReactiveCassandraBatchTemplate implements ReactiveCassandraBatchOperations {
private final AtomicBoolean executed = new AtomicBoolean();
private final BatchStatementBuilder batch = BatchStatement.builder(BatchType.LOGGED);
private final CassandraConverter converter;
private final CassandraMappingContext mappingContext;
private final List>>> batchMonos = new CopyOnWriteArrayList<>();
private final ReactiveCassandraOperations operations;
private final StatementFactory statementFactory;
/**
* Create a new {@link CassandraBatchTemplate} given {@link CassandraOperations}.
*
* @param operations must not be {@literal null}.
*/
ReactiveCassandraBatchTemplate(ReactiveCassandraOperations operations) {
Assert.notNull(operations, "CassandraOperations must not be null");
this.operations = operations;
this.converter = operations.getConverter();
this.mappingContext = this.converter.getMappingContext();
this.statementFactory = new StatementFactory(new UpdateMapper(converter));
}
private void assertNotExecuted() {
Assert.state(!this.executed.get(), "This Cassandra Batch was already executed");
}
/**
* Return a reference to the configured {@link CassandraConverter} used to map {@link Object Objects} to
* {@link com.datastax.driver.core.Row Rows}.
*
* @return a reference to the configured {@link CassandraConverter}.
* @see org.springframework.data.cassandra.core.convert.CassandraConverter
*/
protected CassandraConverter getConverter() {
return this.converter;
}
/**
* Returns a reference to the configured {@link CassandraMappingContext} used to map entities to Cassandra tables and
* back.
*
* @return a reference to the configured {@link CassandraMappingContext}.
* @see org.springframework.data.cassandra.core.mapping.CassandraMappingContext
*/
protected CassandraMappingContext getMappingContext() {
return this.mappingContext;
}
private CassandraPersistentEntity getRequiredPersistentEntity(Class entityType) {
return getMappingContext().getRequiredPersistentEntity(ClassUtils.getUserClass(entityType));
}
/**
* Return a reference to the configured {@link StatementFactory} used to create Cassandra {@link Statement} objects to
* perform data access operations on a Cassandra cluster.
*
* @return a reference to the configured {@link StatementFactory}.
* @see org.springframework.data.cassandra.core.StatementFactory
*/
protected StatementFactory getStatementFactory() {
return this.statementFactory;
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#execute()
*/
@Override
public Mono execute() {
return Mono.defer(() -> {
if (this.executed.compareAndSet(false, true)) {
return Flux.merge(this.batchMonos) //
.flatMap(Flux::fromIterable) //
.collectList() //
.flatMap(statements -> {
this.batch.addStatements((List>) statements);
return this.operations.getReactiveCqlOperations().queryForResultSet(this.batch.build());
}) //
.flatMap(resultSet -> resultSet.rows().collectList()
.map(rows -> new WriteResult(resultSet.getAllExecutionInfo(), resultSet.wasApplied(), rows)));
}
return Mono.error(new IllegalStateException("This Cassandra Batch was already executed"));
});
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#withTimestamp(long)
*/
@Override
public ReactiveCassandraBatchOperations withTimestamp(long timestamp) {
assertNotExecuted();
this.batch.setQueryTimestamp(timestamp);
return this;
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#insert(java.lang.Object[])
*/
@Override
public ReactiveCassandraBatchOperations insert(Object... entities) {
Assert.notNull(entities, "Entities must not be null");
return insert(Arrays.asList(entities));
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#insert(java.lang.Iterable)
*/
@Override
public ReactiveCassandraBatchOperations insert(Iterable entities) {
return insert(entities, InsertOptions.empty());
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#insert(reactor.core.publisher.Mono)
*/
@Override
public ReactiveCassandraBatchOperations insert(Mono> entities) {
return insert(entities, InsertOptions.empty());
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#insert(java.lang.Iterable, org.springframework.data.cassandra.core.cql.WriteOptions)
*/
@Override
public ReactiveCassandraBatchOperations insert(Iterable entities, WriteOptions options) {
assertNotExecuted();
Assert.notNull(entities, "Entities must not be null");
Assert.notNull(options, "WriteOptions must not be null");
this.batchMonos.add(Mono.just(doInsert(entities, options)));
return this;
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#insert(reactor.core.publisher.Mono, org.springframework.data.cassandra.core.cql.WriteOptions)
*/
@Override
public ReactiveCassandraBatchOperations insert(Mono> entities, WriteOptions options) {
assertNotExecuted();
Assert.notNull(entities, "Entities must not be null");
Assert.notNull(options, "WriteOptions must not be null");
this.batchMonos.add(entities.map(entity -> doInsert(entity, options)));
return this;
}
private Collection doInsert(Iterable entities, WriteOptions options) {
CassandraMappingContext mappingContext = getMappingContext();
List insertQueries = new ArrayList<>();
for (Object entity : entities) {
Assert.notNull(entity, "Entity must not be null");
BasicCassandraPersistentEntity persistentEntity = mappingContext
.getRequiredPersistentEntity(entity.getClass());
SimpleStatement insertQuery = getStatementFactory()
.insert(entity, options, persistentEntity, persistentEntity.getTableName()).build();
insertQueries.add(insertQuery);
}
return insertQueries;
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#update(java.lang.Object[])
*/
@Override
public ReactiveCassandraBatchOperations update(Object... entities) {
Assert.notNull(entities, "Entities must not be null");
return update(Arrays.asList(entities));
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#update(java.lang.Iterable)
*/
@Override
public ReactiveCassandraBatchOperations update(Iterable entities) {
return update(entities, UpdateOptions.empty());
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#update(reactor.core.publisher.Mono)
*/
@Override
public ReactiveCassandraBatchOperations update(Mono> entities) {
return update(entities, UpdateOptions.empty());
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#update(java.lang.Iterable, org.springframework.data.cassandra.core.cql.WriteOptions)
*/
@Override
public ReactiveCassandraBatchOperations update(Iterable entities, WriteOptions options) {
assertNotExecuted();
Assert.notNull(entities, "Entities must not be null");
Assert.notNull(options, "WriteOptions must not be null");
this.batchMonos.add(Mono.just(doUpdate(entities, options)));
return this;
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#update(reactor.core.publisher.Mono, org.springframework.data.cassandra.core.cql.WriteOptions)
*/
@Override
public ReactiveCassandraBatchOperations update(Mono> entities, WriteOptions options) {
assertNotExecuted();
Assert.notNull(entities, "Entities must not be null");
Assert.notNull(options, "WriteOptions must not be null");
this.batchMonos.add(entities.map(entity -> doUpdate(entity, options)));
return this;
}
private Collection doUpdate(Iterable entities, WriteOptions options) {
List updateQueries = new ArrayList<>();
for (Object entity : entities) {
Assert.notNull(entity, "Entity must not be null");
CassandraPersistentEntity persistentEntity = getRequiredPersistentEntity(entity.getClass());
SimpleStatement update = getStatementFactory()
.update(entity, options, persistentEntity, persistentEntity.getTableName()).build();
updateQueries.add(update);
}
return updateQueries;
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#delete(java.lang.Object[])
*/
@Override
public ReactiveCassandraBatchOperations delete(Object... entities) {
Assert.notNull(entities, "Entities must not be null");
return delete(Arrays.asList(entities));
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#delete(java.lang.Iterable)
*/
@Override
public ReactiveCassandraBatchOperations delete(Iterable entities) {
return delete(entities, DeleteOptions.empty());
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#delete(reactor.core.publisher.Mono)
*/
@Override
public ReactiveCassandraBatchOperations delete(Mono> entities) {
return delete(entities, DeleteOptions.empty());
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#delete(java.lang.Iterable, org.springframework.data.cassandra.core.cql.WriteOptions)
*/
@Override
public ReactiveCassandraBatchOperations delete(Iterable entities, WriteOptions options) {
assertNotExecuted();
Assert.notNull(entities, "Entities must not be null");
Assert.notNull(options, "WriteOptions must not be null");
this.batchMonos.add(Mono.just(doDelete(entities, options)));
return this;
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.ReactiveCassandraBatchOperations#delete(reactor.core.publisher.Mono, org.springframework.data.cassandra.core.cql.WriteOptions)
*/
@Override
public ReactiveCassandraBatchOperations delete(Mono> entities, WriteOptions options) {
assertNotExecuted();
Assert.notNull(entities, "Entities must not be null");
Assert.notNull(options, "WriteOptions must not be null");
this.batchMonos.add(entities.map(it -> doDelete(it, options)));
return this;
}
private Collection doDelete(Iterable entities, WriteOptions options) {
List deleteQueries = new ArrayList<>();
for (Object entity : entities) {
Assert.notNull(entity, "Entity must not be null");
CassandraPersistentEntity persistentEntity = getRequiredPersistentEntity(entity.getClass());
SimpleStatement delete = getStatementFactory()
.delete(entity, options, getConverter(), persistentEntity.getTableName()).build();
deleteQueries.add(delete);
}
return deleteQueries;
}
}
