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.calcite.server;
  
  import org.apache.calcite.avatica.Meta;
  import org.apache.calcite.avatica.NoSuchStatementException;
  import org.apache.calcite.jdbc.CalciteConnection;
  
  /**
   * Server.
   *
   * <p>Represents shared state among connections, and will have monitoring and
   * management facilities.
   */
  public interface CalciteServer {
    void removeStatement(Meta.StatementHandle h);
  
    void addStatement(CalciteConnection connection, Meta.StatementHandle h);
  
    /** Returns the statement with a given handle.
     *
     * @param h Statement handle
     * @return Statement, never null
     * @throws NoSuchStatementException if handle does not represent a statement
     */
    CalciteServerStatement getStatement(Meta.StatementHandle h)
        throws NoSuchStatementException;
  }
  