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Cassandra support for Spring Data
/*
* Copyright 2017-2018 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
*
* http://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 java.util.LinkedHashMap;
import java.util.Map;
import java.util.Map.Entry;
import lombok.experimental.UtilityClass;
import org.springframework.data.cassandra.core.convert.CassandraConverter;
import org.springframework.data.cassandra.core.mapping.CassandraPersistentEntity;
import com.datastax.driver.core.querybuilder.Insert;
import com.datastax.driver.core.querybuilder.QueryBuilder;
/**
* Utility to create {@link com.datastax.driver.core.querybuilder.Insert} statements for repository use.
*
* @author Mark Paluch
* @since 2.0
*/
@UtilityClass
class InsertUtil {
/**
* Create a {@link Insert} statement containing all properties including these with {@literal null} values.
*
* @param entity the entity, must not be {@literal null}.
* @return the constructed {@link Insert} statement.
*/
static Insert createInsert(CassandraConverter converter, Object entity) {
CassandraPersistentEntity persistentEntity = converter.getMappingContext()
.getRequiredPersistentEntity(entity.getClass());
Map toInsert = new LinkedHashMap<>();
converter.write(entity, toInsert, persistentEntity);
Insert insert = QueryBuilder.insertInto(persistentEntity.getTableName().toCql());
for (Entry entry : toInsert.entrySet()) {
insert.value(entry.getKey(), entry.getValue());
}
return insert;
}
}