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Cassandra support for Spring Data
/*
* Copyright 2013-2022 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 org.springframework.util.Assert;
import com.datastax.oss.driver.api.core.CqlSession;
import com.datastax.oss.driver.api.core.DriverException;
import com.datastax.oss.driver.api.core.cql.PreparedStatement;
import com.datastax.oss.driver.api.core.cql.SimpleStatement;
/**
* Trivial implementation of {@link PreparedStatementCreator}. This prepared statement creator simply prepares a
* statement from the CQL string. Exposes the given CQL statement through {@link CqlProvider#getCql()},
*
* @author David Webb
* @author Mark Paluch
* @see CqlProvider
*/
public class SimplePreparedStatementCreator implements PreparedStatementCreator, CqlProvider {
private final SimpleStatement statement;
/**
* Create a {@link SimplePreparedStatementCreator} given {@code cql}.
*
* @param cql must not be {@literal null}.
*/
public SimplePreparedStatementCreator(String cql) {
Assert.notNull(cql, "CQL is required to create a PreparedStatement");
this.statement = SimpleStatement.newInstance(cql);
}
/**
* Create a {@link SimplePreparedStatementCreator} given {@code cql}.
*
* @param statement must not be {@literal null}.
* @since 3.1
*/
public SimplePreparedStatementCreator(SimpleStatement statement) {
Assert.notNull(statement, "CQL is required to create a PreparedStatement");
this.statement = statement;
}
@Override
public PreparedStatement createPreparedStatement(CqlSession session) throws DriverException {
return session.prepare(this.statement);
}
public String getCql() {
return this.statement.getQuery();
}
}