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Shaded version of DataStax Java Driver for Apache Cassandra
/*
* Copyright (C) 2012-2015 DataStax Inc.
*
* 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 com.datastax.driver.core.schemabuilder;
/**
* A built DROP KEYSPACE statement.
*/
public class DropKeyspace extends SchemaStatement {
private final String keyspaceName;
private boolean ifExists;
public DropKeyspace(String keyspaceName) {
this.keyspaceName = keyspaceName;
this.ifExists = false;
validateNotEmpty(keyspaceName, "Keyspace name");
validateNotKeyWord(keyspaceName,
String.format("The keyspace name '%s' is not allowed because it is a reserved keyword", keyspaceName));
}
/**
* Add the 'IF EXISTS' condition to this DROP statement.
*
* @return this statement.
*/
public DropKeyspace ifExists() {
this.ifExists = true;
return this;
}
@Override
public String buildInternal() {
StringBuilder dropStatement = new StringBuilder("DROP KEYSPACE ");
if (ifExists) {
dropStatement.append("IF EXISTS ");
}
dropStatement.append(keyspaceName);
return dropStatement.toString();
}
}