content: /*
   * Licensed 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 com.github.pgasync.io.frontend;
  
  import com.github.pgasync.message.frontend.Query;
  import com.github.pgasync.io.IO;
  
  import java.nio.ByteBuffer;
  import java.nio.charset.Charset;
  
  /**
   * See <a href="https://www.postgresql.org/docs/11/protocol-message-formats.html">Postgres message formats</a>
   *
   * <pre>
   * Query (F)
   *  Byte1('Q')
   *      Identifies the message as a simple query.
   *  Int32
   *      Length of message contents in bytes, including self.
   *  String
   *      The query string itself.
   * </pre>
   *
   * @author Antti Laisi
   */
  public class QueryEncoder extends SkipableEncoder<Query> {
  
      @Override
      public Class<Query> getMessageType() {
          return Query.class;
      }
  
      @Override
      protected byte getMessageId() {
          return (byte) 'Q';
      }
  
      @Override
      public void writeBody(Query msg, ByteBuffer buffer, Charset encoding) {
          IO.putCString(buffer, msg.getQuery(), encoding);
      }
  }
  