content: /*
   * Copyright (c) 2016, 2020, Oracle and/or its affiliates.
   *
   * This program is free software; you can redistribute it and/or modify it under
   * the terms of the GNU General Public License, version 2.0, as published by the
   * Free Software Foundation.
   *
   * This program is also distributed with certain software (including but not
   * limited to OpenSSL) that is licensed under separate terms, as designated in a
   * particular file or component or in included license documentation. The
   * authors of MySQL hereby grant you an additional permission to link the
   * program and your derivative works with the separately licensed software that
   * they have included with MySQL.
   *
   * Without limiting anything contained in the foregoing, this file, which is
   * part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
   * version 1.0, a copy of which can be found at
   * http://oss.oracle.com/licenses/universal-foss-exception.
   *
   * This program is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
   * FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
   * for more details.
   *
   * You should have received a copy of the GNU General Public License along with
   * this program; if not, write to the Free Software Foundation, Inc.,
   * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
   */
  
  package com.mysql.cj.protocol.a;
  
  import com.mysql.cj.conf.PropertyKey;
  import com.mysql.cj.protocol.ColumnDefinition;
  import com.mysql.cj.protocol.ProtocolEntityFactory;
  import com.mysql.cj.protocol.Resultset;
  import com.mysql.cj.protocol.Resultset.Concurrency;
  import com.mysql.cj.protocol.ResultsetRow;
  import com.mysql.cj.protocol.a.NativeConstants.StringSelfDataType;
  import com.mysql.cj.protocol.a.result.ByteArrayRow;
  import com.mysql.cj.protocol.a.result.TextBufferRow;
  
  public class TextRowFactory extends AbstractRowFactory implements ProtocolEntityFactory<ResultsetRow, NativePacketPayload> {
  
      public TextRowFactory(NativeProtocol protocol, ColumnDefinition colDefinition, Resultset.Concurrency resultSetConcurrency,
              boolean canReuseRowPacketForBufferRow) {
          this.columnDefinition = colDefinition;
          this.resultSetConcurrency = resultSetConcurrency;
          this.canReuseRowPacketForBufferRow = canReuseRowPacketForBufferRow;
          this.useBufferRowSizeThreshold = protocol.getPropertySet().getMemorySizeProperty(PropertyKey.largeRowSizeThreshold);
          this.exceptionInterceptor = protocol.getExceptionInterceptor();
          this.valueDecoder = new MysqlTextValueDecoder();
      }
  
      @Override
      public ResultsetRow createFromMessage(NativePacketPayload rowPacket) {
  
          // use a buffer row for reusable packets (streaming results), blobs and long strings
          // or if we're over the threshold
          boolean useBufferRow = this.canReuseRowPacketForBufferRow || this.columnDefinition.hasLargeFields()
                  || rowPacket.getPayloadLength() >= this.useBufferRowSizeThreshold.getValue();
  
          if (this.resultSetConcurrency == Concurrency.UPDATABLE || !useBufferRow) {
              byte[][] rowBytes = new byte[this.columnDefinition.getFields().length][];
  
              for (int i = 0; i < this.columnDefinition.getFields().length; i++) {
                  rowBytes[i] = rowPacket.readBytes(StringSelfDataType.STRING_LENENC);
              }
  
              return new ByteArrayRow(rowBytes, this.exceptionInterceptor);
          }
  
          return new TextBufferRow(rowPacket, this.columnDefinition, this.exceptionInterceptor, this.valueDecoder);
      }
  
      @Override
      public boolean canReuseRowPacketForBufferRow() {
          return this.canReuseRowPacketForBufferRow;
      }
  
  }
  