io.asyncer.r2dbc.mysql.codec

Interface ParameterizedCodec<T>

Type Parameters:

T - the type without parameter that is handled by this codec.

All Superinterfaces:

Codec<T>

All Known Subinterfaces:

MassiveParameterizedCodec<T>

public interface ParameterizedCodec<T>
extends Codec<T>

Special codec for decode values with parameterized types.

It also can encode and decode values without parameter.

Method Summary

Modifier and Type	Method and Description
boolean	canDecode(MySqlReadableMetadata metadata, ParameterizedType target) Checks if the field value can be decoded as specified ParameterizedType.
@Nullable Object	decode(io.netty.buffer.ByteBuf value, MySqlReadableMetadata metadata, ParameterizedType target, boolean binary, CodecContext context) Decodes a ByteBuf as specified ParameterizedType.

Methods inherited from interface io.asyncer.r2dbc.mysql.codec.Codec

canDecode, canEncode, decode, encode, getMainClass

Method Detail

decode

@Nullable
@Nullable Object decode(io.netty.buffer.ByteBuf value,
                                  MySqlReadableMetadata metadata,
                                  ParameterizedType target,
                                  boolean binary,
                                  CodecContext context)

Decodes a ByteBuf as specified ParameterizedType.

Parameters:

value - the ByteBuf.

metadata - the metadata of the column or the OUT parameter.

target - the specified ParameterizedType.

binary - if the value should be decoded by binary protocol.

context - the codec context.

Returns:

the decoded result.

canDecode

boolean canDecode(MySqlReadableMetadata metadata,
                  ParameterizedType target)

Checks if the field value can be decoded as specified ParameterizedType.

Parameters:

metadata - the metadata of the column or the OUT parameter.

target - the specified ParameterizedType.

Returns:

if it can decode.