io.r2dbc.postgresql.codec

Interface Codecs

All Known Implementing Classes:

DefaultCodecs

public interface Codecs

Encodes and decodes objects.

Method Summary

Modifier and Type	Method and Description
<T> T	decode(io.netty.buffer.ByteBuf buffer, int dataType, io.r2dbc.postgresql.message.Format format, Class<? extends T> type) Decode a data to a value.
io.r2dbc.postgresql.client.Parameter	encode(Object value) Encode a value.
io.r2dbc.postgresql.client.Parameter	encodeNull(Class<?> type) Encode a null value.
Class<?>	preferredType(int dataType, io.r2dbc.postgresql.message.Format format) Returns the preferred Java type for a given data type and format.

Method Detail

decode

@Nullable
<T> T decode(@Nullable
                       io.netty.buffer.ByteBuf buffer,
                       int dataType,
                       io.r2dbc.postgresql.message.Format format,
                       Class<? extends T> type)

Decode a data to a value.

Type Parameters:

T - the type of item being returned

Parameters:

buffer - the ByteBuf to decode

dataType - the data type of the data

format - the format of the data

type - the type to decode to

Returns:

the decoded value

Throws:

IllegalArgumentException - if format or type is null

encode

io.r2dbc.postgresql.client.Parameter encode(Object value)

Encode a value.

Parameters:

value - the value to encode

Returns:

the encoded value

Throws:

IllegalArgumentException - if value is null

encodeNull

io.r2dbc.postgresql.client.Parameter encodeNull(Class<?> type)

Encode a null value.

Parameters:

type - the type to encode

Returns:

the encoded value

Throws:

IllegalArgumentException - if type is null

preferredType

@Nullable
Class<?> preferredType(int dataType,
                                 io.r2dbc.postgresql.message.Format format)

Returns the preferred Java type for a given data type and format.

Parameters:

dataType - the data type fo the data

format - the format of the data

Returns:

the preferred Java type for a given data type and format

Throws:

IllegalArgumentException - if format is null