Package com.tangosol.io.pof

Class PofAnnotationSerializer<T>

java.lang.Object

com.tangosol.io.pof.PofAnnotationSerializer<T>

Type Parameters:

T - the user type this PofAnnotationSerializer will (de)serialize

All Implemented Interfaces:

PofSerializer

public class PofAnnotationSerializer<T>
extends Object
implements PofSerializer

A PofAnnotationSerializer provides annotation based de/serialization. This serializer must be instantiated with the intended class which is eventually scanned for the presence of the following annotations.

• Portable
• PortableProperty

This serializer supports classes iff they are annotated with the type level annotation; Portable. This annotation is a marker annotation with no children.

All fields annotated with PortableProperty are explicitly deemed POF serializable with the option of specifying overrides to provide explicit behaviour such as:

• explicit POF indexes
• Custom Codec <T> to specify concrete implementations / customizations

The PortableProperty.value() (POF index) can be omitted iff the auto-indexing feature is enabled. This is enabled by instantiating this class with the fAutoIndex constructor argument. This feature determines the index based on any explicit indexes specified and the name of the portable properties. Currently objects with multiple versions is not supported. The following illustrates the auto index algorithm:

Examples on POF index

Name	Explicit Index	Determined Index
c	1	1
a		0
b		2

NOTE: This implementation does support objects that implement Evolvable

Since:

3.7.1

Author:

hr

See Also:

Portable

Constructor Summary

Constructors

Constructor	Description
PofAnnotationSerializer(int nTypeId, Class<T> clz)	Constructs a PofAnnotationSerializer.
PofAnnotationSerializer(int nTypeId, Class<T> clz, boolean fAutoIndex)	Constructs a PofAnnotationSerializer.

Method Summary

Modifier and Type	Method	Description
Object	deserialize(PofReader in)	Deserialize a user type instance from a POF stream by reading its state using the specified PofReader object.
protected com.tangosol.io.pof.reflect.internal.TypeMetadata<T>	getTypeMetadata()	Return the TypeMetadata instance that holds structural information regarding the class this serializer (de)serializes.
void	serialize(PofWriter out, Object o)	Serialize a user type instance to a POF stream by writing its state using the specified PofWriter object.

Methods inherited from class java.lang.Object

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

Constructor Detail

PofAnnotationSerializer

public PofAnnotationSerializer(int nTypeId,
                               Class<T> clz)

Constructs a PofAnnotationSerializer.

Parameters:

nTypeId - the POF type id

clz - type this serializer is aware of

PofAnnotationSerializer

public PofAnnotationSerializer(int nTypeId,
                               Class<T> clz,
                               boolean fAutoIndex)

Constructs a PofAnnotationSerializer.

Parameters:

nTypeId - the POF type id

clz - type this serializer is aware of

fAutoIndex - turns on the auto index feature

Method Detail

serialize

public void serialize(PofWriter out,
                      Object o)
               throws IOException

Serialize a user type instance to a POF stream by writing its state using the specified PofWriter object.

An implementation of PofSerializer is required to follow the following steps in sequence for writing out an object of a user type:

1. If the object is evolvable, the implementation must set the version by calling PofWriter.setVersionId(int).
2. The implementation may write any combination of the properties of the user type by using the "write" methods of the PofWriter, but it must do so in the order of the property indexes.
3. After all desired properties of the user type have been written, the implementation must terminate the writing of the user type by calling PofWriter.writeRemainder(com.tangosol.util.Binary).

Specified by:

serialize in interface PofSerializer<T>

Parameters:

out - the PofWriter with which to write the object's state

o - the object to serialize

Throws:

IOException - if an I/O error occurs

deserialize

public Object deserialize(PofReader in)
                   throws IOException

Deserialize a user type instance from a POF stream by reading its state using the specified PofReader object.

An implementation of PofSerializer is required to follow the following steps in sequence for reading in an object of a user type:

1. If the object is evolvable, the implementation must get the version by calling PofReader.getVersionId().
2. The implementation may read any combination of the properties of the user type by using "read" methods of the PofReader, but it must do so in the order of the property indexes. Additionally, the implementation must call PofReader.registerIdentity(java.lang.Object) with the new instance prior to reading any properties which are user type instances themselves.
3. After all desired properties of the user type have been read, the implementation must terminate the reading of the user type by calling PofReader.readRemainder().

Specified by:

deserialize in interface PofSerializer<T>

Parameters:

in - the PofReader with which to read the object's state

Returns:

the deserialized user type instance

Throws:

IOException - if an I/O error occurs

getTypeMetadata

protected com.tangosol.io.pof.reflect.internal.TypeMetadata<T> getTypeMetadata()

Return the TypeMetadata instance that holds structural information regarding the class this serializer (de)serializes.

Returns:

a TypeMetadata instance for the class this serializer (de)serializes