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Cassandra support for Spring Data
/*
* Copyright 2016-2020 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.cql;
import java.time.Duration;
import org.springframework.util.Assert;
import com.datastax.oss.driver.api.core.cql.Statement;
import com.datastax.oss.driver.api.querybuilder.delete.Delete;
import com.datastax.oss.driver.api.querybuilder.delete.DeleteSelection;
import com.datastax.oss.driver.api.querybuilder.insert.Insert;
import com.datastax.oss.driver.api.querybuilder.update.Update;
import com.datastax.oss.driver.api.querybuilder.update.UpdateStart;
/**
* Utility class to associate {@link QueryOptions} and {@link WriteOptions} with QueryBuilder {@link Statement}s.
*
* @author Mark Paluch
* @author Lukasz Antoniak
* @since 2.0
*/
public abstract class QueryOptionsUtil {
/**
* Add common {@link QueryOptions} to all types of queries.
*
* @param statement CQL {@link Statement}, must not be {@literal null}.
* @param queryOptions query options (e.g. consistency level) to add to the CQL statement.
* @return the given {@link Statement}.
*/
@SuppressWarnings("unchecked")
public static > T addQueryOptions(T statement, QueryOptions queryOptions) {
Assert.notNull(statement, "Statement must not be null");
Statement statementToUse = statement;
if (queryOptions.getConsistencyLevel() != null) {
statementToUse = statementToUse.setConsistencyLevel(queryOptions.getConsistencyLevel());
}
statementToUse = queryOptions.getExecutionProfileResolver().apply(statementToUse);
if (queryOptions.getPageSize() != null) {
statementToUse = statementToUse.setPageSize(queryOptions.getPageSize());
}
if (queryOptions.getSerialConsistencyLevel() != null) {
statementToUse = statementToUse.setSerialConsistencyLevel(queryOptions.getSerialConsistencyLevel());
}
if (!queryOptions.getTimeout().isNegative()) {
statementToUse = statementToUse.setTimeout(queryOptions.getTimeout());
}
if (queryOptions.getTracing() != null) {
// While the following statement is null-safe, avoid setting Statement tracing if the tracing query option
// is null since Statements are immutable and the call creates a new object. Therefore keep the following
// statement wrapped in the conditional null check to avoid additional garbage and added GC pressure.
statementToUse = statementToUse.setTracing(Boolean.TRUE.equals(queryOptions.getTracing()));
}
return (T) statementToUse;
}
/**
* Add common {@link WriteOptions} options to {@link Insert} CQL statements.
*
* @param insert {@link Insert} CQL statement, must not be {@literal null}.
* @param writeOptions write options (e.g. consistency level) to add to the CQL statement.
* @return the given {@link Insert}.
*/
public static Insert addWriteOptions(Insert insert, WriteOptions writeOptions) {
Assert.notNull(insert, "Insert must not be null");
Assert.notNull(writeOptions, "WriteOptions must not be null");
Insert insertToUse = insert;
if (!writeOptions.getTtl().isNegative()) {
insertToUse = insertToUse.usingTtl(Math.toIntExact(writeOptions.getTtl().getSeconds()));
}
if (writeOptions.getTimestamp() != null) {
insertToUse = insertToUse.usingTimestamp(writeOptions.getTimestamp());
}
return insertToUse;
}
/**
* Add common {@link WriteOptions} options to {@link Delete} CQL statements.
*
* @param delete {@link Delete} CQL statement, must not be {@literal null}.
* @param writeOptions write options (e.g. consistency level) to add to the CQL statement.
* @return the given {@link Delete}.
* @since 2.1
*/
public static Delete addWriteOptions(Delete delete, WriteOptions writeOptions) {
Assert.notNull(delete, "Delete must not be null");
Assert.notNull(writeOptions, "WriteOptions must not be null");
if (writeOptions.getTimestamp() != null) {
delete = (Delete) ((DeleteSelection) delete).usingTimestamp(writeOptions.getTimestamp());
}
return delete;
}
/**
* Add common {@link WriteOptions} options to {@link Update} CQL statements.
*
* @param update {@link Update} CQL statement, must not be {@literal null}.
* @param writeOptions write options (e.g. consistency level) to add to the CQL statement.
* @return the given {@link Update}.
*/
public static Update addWriteOptions(Update update, WriteOptions writeOptions) {
Assert.notNull(update, "Update must not be null");
Assert.notNull(writeOptions, "WriteOptions must not be null");
if (hasTtl(writeOptions.getTtl())) {
update = (Update) ((UpdateStart) update).usingTtl(getTtlSeconds(writeOptions.getTtl()));
}
if (writeOptions.getTimestamp() != null) {
update = (Update) ((UpdateStart) update).usingTimestamp(writeOptions.getTimestamp());
}
return update;
}
private static int getTtlSeconds(Duration ttl) {
return Math.toIntExact(ttl.getSeconds());
}
private static boolean hasTtl(Duration ttl) {
return !ttl.isZero() && !ttl.isNegative();
}
}