org.apache.flink.runtime.io.disk.iomanager

Interface Deserializer<T>

Type Parameters:

T -

public interface Deserializer<T>

Provides a facility for deserializing objects of type from an InputStream.

Deserializers are stateful, but must not buffer the input since other producers may read from the input between calls to deserialize(Object).

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Clear up any resources.
T	deserialize(T t) Deserialize the next object from the underlying input stream.
void	open(DataInput in) Prepare the deserializer for reading.

Method Detail

open

void open(DataInput in)
          throws IOException

Prepare the deserializer for reading.

Throws:

IOException

deserialize

T deserialize(T t)
              throws IOException

Deserialize the next object from the underlying input stream. If the object t is non-null then this deserializer may set its internal state to the next object read from the input stream. Otherwise, if the object t is null a new deserialized object will be created.

Returns:

the deserialized object

Throws:

IOException

close

void close()
           throws IOException

Clear up any resources.

Throws:

IOException