blob: e2290a339bdfa1f6456077d0f0a8b8f15526cd22 [file] [log] [blame]
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.cassandra.schema;
import java.net.UnknownHostException;
public interface SchemaTransformation
{
/**
* Apply a statement transformation to a schema snapshot.
*
* Implementing methods should be side-effect free.
*
* @param schema Keyspaces to base the transformation on
* @return Keyspaces transformed by the statement
*/
Keyspaces apply(Keyspaces schema) throws UnknownHostException;
}