| /* |
| * 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 org.apache.cassandra.cql3.functions.UDAggregate; |
| import org.apache.cassandra.cql3.functions.UDFunction; |
| import org.apache.cassandra.db.marshal.UserType; |
| |
| public interface SchemaChangeListener |
| { |
| default void onCreateKeyspace(KeyspaceMetadata keyspace) |
| { |
| } |
| |
| default void onCreateTable(TableMetadata table) |
| { |
| } |
| |
| default void onCreateView(ViewMetadata view) |
| { |
| onCreateTable(view.metadata); |
| } |
| |
| default void onCreateType(UserType type) |
| { |
| } |
| |
| default void onCreateFunction(UDFunction function) |
| { |
| } |
| |
| default void onCreateAggregate(UDAggregate aggregate) |
| { |
| } |
| |
| default void onAlterKeyspace(KeyspaceMetadata before, KeyspaceMetadata after) |
| { |
| } |
| |
| default void onPreAlterTable(TableMetadata before, TableMetadata after) |
| { |
| } |
| |
| // the boolean flag indicates whether the change that triggered this event may have a substantive |
| // impact on statements using the column family. |
| default void onAlterTable(TableMetadata before, TableMetadata after, boolean affectStatements) |
| { |
| } |
| |
| default void onPreAlterView(ViewMetadata before, ViewMetadata after) |
| { |
| } |
| |
| default void onAlterView(ViewMetadata before, ViewMetadata after, boolean affectStatements) |
| { |
| onAlterTable(before.metadata, after.metadata, affectStatements); |
| } |
| |
| default void onAlterType(UserType before, UserType after) |
| { |
| } |
| |
| default void onAlterFunction(UDFunction before, UDFunction after) |
| { |
| } |
| |
| default void onAlterAggregate(UDAggregate before, UDAggregate after) |
| { |
| } |
| |
| default void onDropKeyspace(KeyspaceMetadata keyspace, boolean dropData) |
| { |
| } |
| |
| default void onDropTable(TableMetadata table, boolean dropData) |
| { |
| } |
| |
| default void onDropView(ViewMetadata view, boolean dropData) |
| { |
| onDropTable(view.metadata, dropData); |
| } |
| |
| default void onDropType(UserType type) |
| { |
| } |
| |
| default void onDropFunction(UDFunction function) |
| { |
| } |
| |
| default void onDropAggregate(UDAggregate aggregate) |
| { |
| } |
| } |