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JDBC driver framework.
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/*
 * 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.remote;

import com.google.protobuf.Descriptors.Descriptor;

import com.google.protobuf.Message;

/**
 * Service implementation that encodes requests and responses as protocol buffers.
 */
public abstract class ProtobufService extends AbstractService {

  /**
   * Derived class should implement this method to transport requests and
   * responses to and from the peer service.
   */
  public abstract Response _apply(Request request);

  @Override SerializationType getSerializationType() {
    return SerializationType.PROTOBUF;
  }

  @Override public ResultSetResponse apply(CatalogsRequest request) {
    return finagle((ResultSetResponse) _apply(request));
  }

  @Override public ResultSetResponse apply(SchemasRequest request) {
    return finagle((ResultSetResponse) _apply(request));
  }

  @Override public ResultSetResponse apply(TablesRequest request) {
    return finagle((ResultSetResponse) _apply(request));
  }

  @Override public ResultSetResponse apply(TableTypesRequest request) {
    return finagle((ResultSetResponse) _apply(request));
  }

  @Override public ResultSetResponse apply(TypeInfoRequest request) {
    return finagle((ResultSetResponse) _apply(request));
  }

  @Override public ResultSetResponse apply(ColumnsRequest request) {
    return finagle((ResultSetResponse) _apply(request));
  }

  @Override public PrepareResponse apply(PrepareRequest request) {
    return finagle((PrepareResponse) _apply(request));
  }

  @Override public ExecuteResponse apply(PrepareAndExecuteRequest request) {
    return finagle((ExecuteResponse) _apply(request));
  }

  @Override public FetchResponse apply(FetchRequest request) {
    return (FetchResponse) _apply(request);
  }

  @Override public CreateStatementResponse apply(CreateStatementRequest request) {
    return (CreateStatementResponse) _apply(request);
  }

  @Override public CloseStatementResponse apply(CloseStatementRequest request) {
    return (CloseStatementResponse) _apply(request);
  }

  @Override public OpenConnectionResponse apply(OpenConnectionRequest request) {
    return (OpenConnectionResponse) _apply(request);
  }

  @Override public CloseConnectionResponse apply(CloseConnectionRequest request) {
    return (CloseConnectionResponse) _apply(request);
  }

  @Override public ConnectionSyncResponse apply(ConnectionSyncRequest request) {
    return (ConnectionSyncResponse) _apply(request);
  }

  @Override public DatabasePropertyResponse apply(DatabasePropertyRequest request) {
    return (DatabasePropertyResponse) _apply(request);
  }

  @Override public ExecuteResponse apply(ExecuteRequest request) {
    return finagle((ExecuteResponse) _apply(request));
  }

  @Override public SyncResultsResponse apply(SyncResultsRequest request) {
    return (SyncResultsResponse) _apply(request);
  }

  /**
   * Determines whether the given message has the field, denoted by the provided number, set.
   *
   * @param msg The protobuf message
   * @param desc The descriptor for the message
   * @param fieldNum The identifier for the field
   * @return True if the message contains the field, false otherwise
   */
  public static boolean hasField(Message msg, Descriptor desc, int fieldNum) {
    return msg.hasField(desc.findFieldByNumber(fieldNum));
  }
}

// End ProtobufService.java