io.airlift.drift.codec.internal.builtin

Class OptionalThriftCodec<T>

java.lang.Object

io.airlift.drift.codec.internal.builtin.OptionalThriftCodec<T>

All Implemented Interfaces:

ThriftCodec<Optional<T>>

@Immutable
public class OptionalThriftCodec<T>
extends Object
implements ThriftCodec<Optional<T>>

Constructor Summary

Constructors

Constructor and Description
OptionalThriftCodec(ThriftType type, ThriftCodec<T> elementCodec)

Method Summary

Modifier and Type	Method and Description
ThriftType	getType() The Thrift type this codec supports.
boolean	isNull(Optional<T> value) If the value is effectively null and should not be written.
Optional<T>	read(TProtocolReader protocol) Reads a value from supplied Thrift protocol reader.
void	write(Optional<T> value, TProtocolWriter protocol) Writes a value to the supplied Thrift protocol writer.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OptionalThriftCodec

public OptionalThriftCodec(ThriftType type,
                           ThriftCodec<T> elementCodec)

Method Detail

getType

public ThriftType getType()

Description copied from interface: ThriftCodec

The Thrift type this codec supports. The Thrift type contains the Java generic Type of the codec.

Specified by:

getType in interface ThriftCodec<Optional<T>>

read

public Optional<T> read(TProtocolReader protocol)
                 throws Exception

Description copied from interface: ThriftCodec

Reads a value from supplied Thrift protocol reader.

Specified by:

read in interface ThriftCodec<Optional<T>>

Parameters:

protocol - the protocol to read from

Returns:

the value; not null

Throws:

Exception - if any problems occurred when reading or coercing the value

write

public void write(Optional<T> value,
                  TProtocolWriter protocol)
           throws Exception

Description copied from interface: ThriftCodec

Writes a value to the supplied Thrift protocol writer.

Specified by:

write in interface ThriftCodec<Optional<T>>

Parameters:

value - the value to write; not null

protocol - the protocol to write to

Throws:

Exception - if any problems occurred when writing or coercing the value

isNull

public boolean isNull(Optional<T> value)

Description copied from interface: ThriftCodec

If the value is effectively null and should not be written.

Specified by:

isNull in interface ThriftCodec<Optional<T>>

Parameters:

value - the value to test

Returns:

true if the value should not be written