/* * 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.service; import java.util.List; import org.apache.cassandra.db.marshal.AbstractType; public abstract class MigrationListener { public void onCreateKeyspace(String ksName) { } public void onCreateColumnFamily(String ksName, String cfName) { } public void onCreateView(String ksName, String viewName) { onCreateColumnFamily(ksName, viewName); } public void onCreateUserType(String ksName, String typeName) { } public void onCreateFunction(String ksName, String functionName, List<AbstractType<?>> argTypes) { } public void onCreateAggregate(String ksName, String aggregateName, List<AbstractType<?>> argTypes) { } public void onUpdateKeyspace(String ksName) { } // the boolean flag indicates whether the change that triggered this event may have a substantive // impact on statements using the column family. public void onUpdateColumnFamily(String ksName, String cfName, boolean affectsStatements) { } public void onUpdateView(String ksName, String viewName, boolean columnsDidChange) { onUpdateColumnFamily(ksName, viewName, columnsDidChange); } public void onUpdateUserType(String ksName, String typeName) { } public void onUpdateFunction(String ksName, String functionName, List<AbstractType<?>> argTypes) { } public void onUpdateAggregate(String ksName, String aggregateName, List<AbstractType<?>> argTypes) { } public void onDropKeyspace(String ksName) { } public void onDropColumnFamily(String ksName, String cfName) { } public void onDropView(String ksName, String viewName) { onDropColumnFamily(ksName, viewName); } public void onDropUserType(String ksName, String typeName) { } public void onDropFunction(String ksName, String functionName, List<AbstractType<?>> argTypes) { } public void onDropAggregate(String ksName, String aggregateName, List<AbstractType<?>> argTypes) { } }