core/src/main/java/org/apache/calcite/avatica/HandlerImpl.java

/*
 * 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.avatica;

import java.sql.SQLException;

/**
 * Implementation of {@link Handler} that does nothing for each callback.
 * It is recommended implementations of {@code Handler} use this as a base
 * class, to ensure forward compatibility.
 */
public class HandlerImpl implements Handler {
  public void onConnectionInit(AvaticaConnection connection)
      throws SQLException {
    // nothing
  }

  public void onConnectionClose(AvaticaConnection connection) {
    // nothing
  }

  public void onStatementExecute(
      AvaticaStatement statement,
      ResultSink resultSink) {
    // nothing
  }

  public void onStatementClose(AvaticaStatement statement) {
    // nothing
  }
}

// End HandlerImpl.java