content: /*
   * 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.carbondata.core.view;
  
  import org.apache.carbondata.core.metadata.schema.table.RelationIdentifier;
  
  /**
   * This is the interface for in-memory catalog registry for mv.
   * For query rewrite.
   * @since 1.4.0
   */
  public interface MVCatalog<T> {
  
    /**
     * List all registered valid schema catalogs
     */
    T[] getValidSchemas();
  
    /**
     * Register schema to the catalog.
     * @param schema mv schema
     */
    void registerSchema(MVSchema schema);
  
    /**
     * Unregister schema from catalog.
     *
     * @param mvIdentifier mv identifier
     */
    void deregisterSchema(RelationIdentifier mvIdentifier);
  
  }
  