/*
* Copyright 2013-2014 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.cassandra.core.cql.generator;
import static org.springframework.cassandra.core.cql.CqlStringUtils.*;
import org.springframework.cassandra.core.keyspace.DropColumnSpecification;
/**
* CQL generator for generating a {@code DROP} column clause of an {@code ALTER TABLE} statement.
*
* @author Matthew T. Adams
* @see DropColumnSpecification
* @see ColumnChangeCqlGenerator
* @see org.springframework.cassandra.core.keyspace.AlterTableSpecification
*/
public class DropColumnCqlGenerator extends ColumnChangeCqlGenerator<DropColumnSpecification> {
public DropColumnCqlGenerator(DropColumnSpecification specification) {
super(specification);
}
public StringBuilder toCql(StringBuilder cql) {
return noNull(cql).append("DROP ").append(spec().getName());
}
}