https://github.com/eclipse-vertx/vertx-sql-client: The Reactive MySQL client (Eclipse) 
abstract class io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec<R, C extends io.vertx.sqlclient.impl.command.ExtendedQueryCommandBase<R>> extends io.vertx.mysqlclient.impl.codec.QueryCommandBaseCodec<R, C>
  minor version: 0
  major version: 59
  flags: flags: (0x0420) ACC_SUPER, ACC_ABSTRACT
  this_class: io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec
  super_class: io.vertx.mysqlclient.impl.codec.QueryCommandBaseCodec
{
  protected final byte sendType;
    descriptor: B
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL
    ConstantValue: 1

  protected final io.vertx.mysqlclient.impl.codec.MySQLPreparedStatement statement;
    descriptor: Lio/vertx/mysqlclient/impl/codec/MySQLPreparedStatement;
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL

  void <init>();
    descriptor: (Lio/vertx/sqlclient/impl/command/ExtendedQueryCommandBase;)V
    flags: (0x0000) 
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec this
        start local 1 // io.vertx.sqlclient.impl.command.ExtendedQueryCommandBase cmd
         0: .line 25
            aload 0 /* this */
            aload 1 /* cmd */
            getstatic io.vertx.mysqlclient.impl.codec.DataFormat.BINARY:Lio/vertx/mysqlclient/impl/codec/DataFormat;
            invokespecial io.vertx.mysqlclient.impl.codec.QueryCommandBaseCodec.<init>:(Lio/vertx/sqlclient/impl/command/QueryCommandBase;Lio/vertx/mysqlclient/impl/codec/DataFormat;)V
         1: .line 20
            aload 0 /* this */
            iconst_1
            putfield io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec.sendType:B
         2: .line 26
            aload 0 /* this */
            aload 1 /* cmd */
            invokevirtual io.vertx.sqlclient.impl.command.ExtendedQueryCommandBase.preparedStatement:()Lio/vertx/sqlclient/impl/PreparedStatement;
            checkcast io.vertx.mysqlclient.impl.codec.MySQLPreparedStatement
            putfield io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec.statement:Lio/vertx/mysqlclient/impl/codec/MySQLPreparedStatement;
         3: .line 27
            return
        end local 1 // io.vertx.sqlclient.impl.command.ExtendedQueryCommandBase cmd
        end local 0 // io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lio/vertx/mysqlclient/impl/codec/ExtendedQueryCommandBaseCodec<TR;TC;>;
            0    4     1   cmd  TC;
    Signature: (TC;)V
    MethodParameters:
      Name  Flags
      cmd   

  protected void handleInitPacket(io.netty.buffer.ByteBuf);
    descriptor: (Lio/netty/buffer/ByteBuf;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=4, locals=4, args_size=2
        start local 0 // io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec this
        start local 1 // io.netty.buffer.ByteBuf payload
         0: .line 32
            aload 1 /* payload */
            aload 1 /* payload */
            invokevirtual io.netty.buffer.ByteBuf.readerIndex:()I
            invokevirtual io.netty.buffer.ByteBuf.getUnsignedByte:(I)S
            istore 2 /* firstByte */
        start local 2 // int firstByte
         1: .line 33
            iload 2 /* firstByte */
            ifne 5
         2: .line 34
            aload 0 /* this */
            aload 1 /* payload */
            getstatic java.nio.charset.StandardCharsets.UTF_8:Ljava/nio/charset/Charset;
            invokevirtual io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec.decodeOkPacketPayload:(Lio/netty/buffer/ByteBuf;Ljava/nio/charset/Charset;)Lio/vertx/mysqlclient/impl/codec/Packets$OkPacket;
            astore 3 /* okPacket */
        start local 3 // io.vertx.mysqlclient.impl.codec.Packets$OkPacket okPacket
         3: .line 35
            aload 0 /* this */
            aload 3 /* okPacket */
            invokevirtual io.vertx.mysqlclient.impl.codec.Packets$OkPacket.serverStatusFlags:()I
            aload 3 /* okPacket */
            invokevirtual io.vertx.mysqlclient.impl.codec.Packets$OkPacket.affectedRows:()J
            l2i
            invokevirtual io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec.handleSingleResultsetDecodingCompleted:(II)V
        end local 3 // io.vertx.mysqlclient.impl.codec.Packets$OkPacket okPacket
         4: .line 36
            goto 9
      StackMap locals: int
      StackMap stack:
         5: iload 2 /* firstByte */
            sipush 255
            if_icmpne 8
         6: .line 37
            aload 0 /* this */
            aload 1 /* payload */
            invokevirtual io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec.handleErrorPacketPayload:(Lio/netty/buffer/ByteBuf;)V
         7: .line 38
            goto 9
         8: .line 39
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 1 /* payload */
            invokevirtual io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec.handleResultsetColumnCountPacketBody:(Lio/netty/buffer/ByteBuf;)V
         9: .line 41
      StackMap locals:
      StackMap stack:
            return
        end local 2 // int firstByte
        end local 1 // io.netty.buffer.ByteBuf payload
        end local 0 // io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   10     0       this  Lio/vertx/mysqlclient/impl/codec/ExtendedQueryCommandBaseCodec<TR;TC;>;
            0   10     1    payload  Lio/netty/buffer/ByteBuf;
            1   10     2  firstByte  I
            3    4     3   okPacket  Lio/vertx/mysqlclient/impl/codec/Packets$OkPacket;
    MethodParameters:
         Name  Flags
      payload  

  protected void sendStatementExecuteCommand(long, io.vertx.mysqlclient.impl.codec.ColumnDefinition[], byte, io.vertx.sqlclient.Tuple, byte);
    descriptor: (J[Lio/vertx/mysqlclient/impl/codec/ColumnDefinition;BLio/vertx/sqlclient/Tuple;B)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=6, locals=16, args_size=6
        start local 0 // io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec this
        start local 1 // long statementId
        start local 3 // io.vertx.mysqlclient.impl.codec.ColumnDefinition[] paramsColumnDefinitions
        start local 4 // byte sendType
        start local 5 // io.vertx.sqlclient.Tuple params
        start local 6 // byte cursorType
         0: .line 44
            aload 0 /* this */
            invokevirtual io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec.allocateBuffer:()Lio/netty/buffer/ByteBuf;
            astore 7 /* packet */
        start local 7 // io.netty.buffer.ByteBuf packet
         1: .line 46
            aload 7 /* packet */
            invokevirtual io.netty.buffer.ByteBuf.writerIndex:()I
            istore 8 /* packetStartIdx */
        start local 8 // int packetStartIdx
         2: .line 47
            aload 7 /* packet */
            iconst_0
            invokevirtual io.netty.buffer.ByteBuf.writeMediumLE:(I)Lio/netty/buffer/ByteBuf;
            pop
         3: .line 48
            aload 7 /* packet */
            aload 0 /* this */
            getfield io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec.sequenceId:I
            invokevirtual io.netty.buffer.ByteBuf.writeByte:(I)Lio/netty/buffer/ByteBuf;
            pop
         4: .line 51
            aload 7 /* packet */
            bipush 23
            invokevirtual io.netty.buffer.ByteBuf.writeByte:(I)Lio/netty/buffer/ByteBuf;
            pop
         5: .line 52
            aload 7 /* packet */
            lload 1 /* statementId */
            l2i
            invokevirtual io.netty.buffer.ByteBuf.writeIntLE:(I)Lio/netty/buffer/ByteBuf;
            pop
         6: .line 53
            aload 7 /* packet */
            iload 6 /* cursorType */
            invokevirtual io.netty.buffer.ByteBuf.writeByte:(I)Lio/netty/buffer/ByteBuf;
            pop
         7: .line 55
            aload 7 /* packet */
            iconst_1
            invokevirtual io.netty.buffer.ByteBuf.writeIntLE:(I)Lio/netty/buffer/ByteBuf;
            pop
         8: .line 57
            aload 3 /* paramsColumnDefinitions */
            arraylength
            istore 9 /* numOfParams */
        start local 9 // int numOfParams
         9: .line 58
            iload 9 /* numOfParams */
            bipush 7
            iadd
            bipush 8
            idiv
            istore 10 /* bitmapLength */
        start local 10 // int bitmapLength
        10: .line 59
            iload 10 /* bitmapLength */
            newarray 8
            astore 11 /* nullBitmap */
        start local 11 // byte[] nullBitmap
        11: .line 61
            aload 7 /* packet */
            invokevirtual io.netty.buffer.ByteBuf.writerIndex:()I
            istore 12 /* pos */
        start local 12 // int pos
        12: .line 63
            iload 9 /* numOfParams */
            ifle 34
        13: .line 65
            aload 7 /* packet */
            aload 11 /* nullBitmap */
            invokevirtual io.netty.buffer.ByteBuf.writeBytes:([B)Lio/netty/buffer/ByteBuf;
            pop
        14: .line 66
            aload 7 /* packet */
            iload 4 /* sendType */
            invokevirtual io.netty.buffer.ByteBuf.writeByte:(I)Lio/netty/buffer/ByteBuf;
            pop
        15: .line 67
            iload 4 /* sendType */
            iconst_1
            if_icmpne 23
        16: .line 68
            iconst_0
            istore 13 /* i */
        start local 13 // int i
        17: goto 22
        18: .line 69
      StackMap locals: io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec long io.vertx.mysqlclient.impl.codec.ColumnDefinition[] int io.vertx.sqlclient.Tuple int io.netty.buffer.ByteBuf int int int byte[] int int
      StackMap stack:
            aload 5 /* params */
            iload 13 /* i */
            invokeinterface io.vertx.sqlclient.Tuple.getValue:(I)Ljava/lang/Object;
            astore 14 /* value */
        start local 14 // java.lang.Object value
        19: .line 70
            aload 7 /* packet */
            aload 0 /* this */
            aload 14 /* value */
            invokevirtual io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec.parseDataTypeByEncodingValue:(Ljava/lang/Object;)Lio/vertx/mysqlclient/impl/codec/DataType;
            getfield io.vertx.mysqlclient.impl.codec.DataType.id:I
            invokevirtual io.netty.buffer.ByteBuf.writeByte:(I)Lio/netty/buffer/ByteBuf;
            pop
        20: .line 71
            aload 7 /* packet */
            iconst_0
            invokevirtual io.netty.buffer.ByteBuf.writeByte:(I)Lio/netty/buffer/ByteBuf;
            pop
        end local 14 // java.lang.Object value
        21: .line 68
            iinc 13 /* i */ 1
      StackMap locals:
      StackMap stack:
        22: iload 13 /* i */
            iload 9 /* numOfParams */
            if_icmplt 18
        end local 13 // int i
        23: .line 75
      StackMap locals:
      StackMap stack:
            iconst_0
            istore 13 /* i */
        start local 13 // int i
        24: goto 32
        25: .line 76
      StackMap locals: int
      StackMap stack:
            aload 5 /* params */
            iload 13 /* i */
            invokeinterface io.vertx.sqlclient.Tuple.getValue:(I)Ljava/lang/Object;
            astore 14 /* value */
        start local 14 // java.lang.Object value
        26: .line 77
            aload 14 /* value */
            ifnull 30
        27: .line 78
            aload 3 /* paramsColumnDefinitions */
            iload 13 /* i */
            aaload
            invokevirtual io.vertx.mysqlclient.impl.codec.ColumnDefinition.characterSet:()I
            invokestatic io.vertx.mysqlclient.impl.MySQLCollation.valueOfId:(I)Lio/vertx/mysqlclient/impl/MySQLCollation;
            astore 15 /* collation */
        start local 15 // io.vertx.mysqlclient.impl.MySQLCollation collation
        28: .line 79
            aload 0 /* this */
            aload 14 /* value */
            invokevirtual io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec.parseDataTypeByEncodingValue:(Ljava/lang/Object;)Lio/vertx/mysqlclient/impl/codec/DataType;
            aload 15 /* collation */
            invokevirtual io.vertx.mysqlclient.impl.MySQLCollation.mappedJavaCharsetName:()Ljava/lang/String;
            invokestatic java.nio.charset.Charset.forName:(Ljava/lang/String;)Ljava/nio/charset/Charset;
            aload 14 /* value */
            aload 7 /* packet */
            invokestatic io.vertx.mysqlclient.impl.codec.DataTypeCodec.encodeBinary:(Lio/vertx/mysqlclient/impl/codec/DataType;Ljava/nio/charset/Charset;Ljava/lang/Object;Lio/netty/buffer/ByteBuf;)V
        end local 15 // io.vertx.mysqlclient.impl.MySQLCollation collation
        29: .line 80
            goto 31
        30: .line 81
      StackMap locals: java.lang.Object
      StackMap stack:
            aload 11 /* nullBitmap */
            iload 13 /* i */
            bipush 8
            idiv
            dup2
            baload
            iconst_1
            iload 13 /* i */
            bipush 7
            iand
            ishl
            ior
            i2b
            bastore
        end local 14 // java.lang.Object value
        31: .line 75
      StackMap locals:
      StackMap stack:
            iinc 13 /* i */ 1
      StackMap locals:
      StackMap stack:
        32: iload 13 /* i */
            iload 9 /* numOfParams */
            if_icmplt 25
        end local 13 // int i
        33: .line 86
            aload 7 /* packet */
            iload 12 /* pos */
            aload 11 /* nullBitmap */
            invokevirtual io.netty.buffer.ByteBuf.setBytes:(I[B)Lio/netty/buffer/ByteBuf;
            pop
        34: .line 90
      StackMap locals:
      StackMap stack:
            aload 7 /* packet */
            invokevirtual io.netty.buffer.ByteBuf.writerIndex:()I
            iload 8 /* packetStartIdx */
            isub
            iconst_4
            isub
            istore 13 /* payloadLength */
        start local 13 // int payloadLength
        35: .line 91
            aload 7 /* packet */
            iload 8 /* packetStartIdx */
            iload 13 /* payloadLength */
            invokevirtual io.netty.buffer.ByteBuf.setMediumLE:(II)Lio/netty/buffer/ByteBuf;
            pop
        36: .line 93
            aload 0 /* this */
            aload 7 /* packet */
            iload 13 /* payloadLength */
            invokevirtual io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec.sendPacket:(Lio/netty/buffer/ByteBuf;I)V
        37: .line 94
            return
        end local 13 // int payloadLength
        end local 12 // int pos
        end local 11 // byte[] nullBitmap
        end local 10 // int bitmapLength
        end local 9 // int numOfParams
        end local 8 // int packetStartIdx
        end local 7 // io.netty.buffer.ByteBuf packet
        end local 6 // byte cursorType
        end local 5 // io.vertx.sqlclient.Tuple params
        end local 4 // byte sendType
        end local 3 // io.vertx.mysqlclient.impl.codec.ColumnDefinition[] paramsColumnDefinitions
        end local 1 // long statementId
        end local 0 // io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec this
      LocalVariableTable:
        Start  End  Slot                     Name  Signature
            0   38     0                     this  Lio/vertx/mysqlclient/impl/codec/ExtendedQueryCommandBaseCodec<TR;TC;>;
            0   38     1              statementId  J
            0   38     3  paramsColumnDefinitions  [Lio/vertx/mysqlclient/impl/codec/ColumnDefinition;
            0   38     4                 sendType  B
            0   38     5                   params  Lio/vertx/sqlclient/Tuple;
            0   38     6               cursorType  B
            1   38     7                   packet  Lio/netty/buffer/ByteBuf;
            2   38     8           packetStartIdx  I
            9   38     9              numOfParams  I
           10   38    10             bitmapLength  I
           11   38    11               nullBitmap  [B
           12   38    12                      pos  I
           17   23    13                        i  I
           19   21    14                    value  Ljava/lang/Object;
           24   33    13                        i  I
           26   31    14                    value  Ljava/lang/Object;
           28   29    15                collation  Lio/vertx/mysqlclient/impl/MySQLCollation;
           35   38    13            payloadLength  I
    MethodParameters:
                         Name  Flags
      statementId              
      paramsColumnDefinitions  
      sendType                 
      params                   
      cursorType               

  private io.vertx.mysqlclient.impl.codec.DataType parseDataTypeByEncodingValue(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Lio/vertx/mysqlclient/impl/codec/DataType;
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec this
        start local 1 // java.lang.Object value
         0: .line 97
            aload 1 /* value */
            ifnonnull 2
         1: .line 99
            getstatic io.vertx.mysqlclient.impl.codec.DataType.NULL:Lio/vertx/mysqlclient/impl/codec/DataType;
            areturn
         2: .line 100
      StackMap locals:
      StackMap stack:
            aload 1 /* value */
            instanceof java.lang.Byte
            ifeq 4
         3: .line 102
            getstatic io.vertx.mysqlclient.impl.codec.DataType.INT1:Lio/vertx/mysqlclient/impl/codec/DataType;
            areturn
         4: .line 103
      StackMap locals:
      StackMap stack:
            aload 1 /* value */
            instanceof java.lang.Boolean
            ifeq 6
         5: .line 105
            getstatic io.vertx.mysqlclient.impl.codec.DataType.INT1:Lio/vertx/mysqlclient/impl/codec/DataType;
            areturn
         6: .line 106
      StackMap locals:
      StackMap stack:
            aload 1 /* value */
            instanceof java.lang.Short
            ifeq 8
         7: .line 108
            getstatic io.vertx.mysqlclient.impl.codec.DataType.INT2:Lio/vertx/mysqlclient/impl/codec/DataType;
            areturn
         8: .line 109
      StackMap locals:
      StackMap stack:
            aload 1 /* value */
            instanceof java.lang.Integer
            ifeq 10
         9: .line 111
            getstatic io.vertx.mysqlclient.impl.codec.DataType.INT4:Lio/vertx/mysqlclient/impl/codec/DataType;
            areturn
        10: .line 112
      StackMap locals:
      StackMap stack:
            aload 1 /* value */
            instanceof java.lang.Long
            ifeq 12
        11: .line 114
            getstatic io.vertx.mysqlclient.impl.codec.DataType.INT8:Lio/vertx/mysqlclient/impl/codec/DataType;
            areturn
        12: .line 115
      StackMap locals:
      StackMap stack:
            aload 1 /* value */
            instanceof java.lang.Double
            ifeq 14
        13: .line 117
            getstatic io.vertx.mysqlclient.impl.codec.DataType.DOUBLE:Lio/vertx/mysqlclient/impl/codec/DataType;
            areturn
        14: .line 118
      StackMap locals:
      StackMap stack:
            aload 1 /* value */
            instanceof java.lang.Float
            ifeq 16
        15: .line 120
            getstatic io.vertx.mysqlclient.impl.codec.DataType.FLOAT:Lio/vertx/mysqlclient/impl/codec/DataType;
            areturn
        16: .line 121
      StackMap locals:
      StackMap stack:
            aload 1 /* value */
            instanceof java.time.LocalDate
            ifeq 18
        17: .line 123
            getstatic io.vertx.mysqlclient.impl.codec.DataType.DATE:Lio/vertx/mysqlclient/impl/codec/DataType;
            areturn
        18: .line 124
      StackMap locals:
      StackMap stack:
            aload 1 /* value */
            instanceof java.time.Duration
            ifeq 20
        19: .line 126
            getstatic io.vertx.mysqlclient.impl.codec.DataType.TIME:Lio/vertx/mysqlclient/impl/codec/DataType;
            areturn
        20: .line 127
      StackMap locals:
      StackMap stack:
            aload 1 /* value */
            instanceof io.vertx.core.buffer.Buffer
            ifeq 22
        21: .line 129
            getstatic io.vertx.mysqlclient.impl.codec.DataType.BLOB:Lio/vertx/mysqlclient/impl/codec/DataType;
            areturn
        22: .line 130
      StackMap locals:
      StackMap stack:
            aload 1 /* value */
            instanceof java.time.LocalDateTime
            ifeq 24
        23: .line 132
            getstatic io.vertx.mysqlclient.impl.codec.DataType.DATETIME:Lio/vertx/mysqlclient/impl/codec/DataType;
            areturn
        24: .line 139
      StackMap locals:
      StackMap stack:
            getstatic io.vertx.mysqlclient.impl.codec.DataType.STRING:Lio/vertx/mysqlclient/impl/codec/DataType;
            areturn
        end local 1 // java.lang.Object value
        end local 0 // io.vertx.mysqlclient.impl.codec.ExtendedQueryCommandBaseCodec this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0   25     0   this  Lio/vertx/mysqlclient/impl/codec/ExtendedQueryCommandBaseCodec<TR;TC;>;
            0   25     1  value  Ljava/lang/Object;
    MethodParameters:
       Name  Flags
      value  
}
Signature: <R:Ljava/lang/Object;C:Lio/vertx/sqlclient/impl/command/ExtendedQueryCommandBase<TR;>;>Lio/vertx/mysqlclient/impl/codec/QueryCommandBaseCodec<TR;TC;>;
SourceFile: "ExtendedQueryCommandBaseCodec.java"
InnerClasses:
  final OkPacket = io.vertx.mysqlclient.impl.codec.Packets$OkPacket of io.vertx.mysqlclient.impl.codec.Packets