0002796: Hessian customization

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Date Submitted

Last Update

0002796

[Hessian]

minor

always

07-18-08 08:55

07-28-08 04:47

Reporter

ferg

View Status

public

Assigned To

Priority

normal

Resolution

open

Platform

Status

new

Projection

none

OS Version

ETA

none

Fixed in Version

Product Version

Product Build

Summary

0002796: Hessian customization

Description

(rep by Harald Radi)

i want to implement a custom serializer that overrules hessians default serialization implementation based on some custom annotations. I have the following usecase: I want to send JPA entities over the wire, but I don?t want the serializer to traverse all @ManyToOne mapped properties (and hence trigger a sql select) ? instead it should just serialize the id of those (the foreign key) which are available even without a further select. For that I annotated such fields with @SerializeById.

Now, trying to make the hessian serialization mechanism aware of this my naive approach would have been:

- add a custom SerializerFactory that provides a serializer for such annotated entities
- derive from JavaSerializer and overwrite getFieldSerializer and provide a different implementation for annotated fields

There are two difficulties with that approach:

- getFieldSerializer is private static, it needs to be protected for that
- only ?field.getType()? is passed to getFieldSerializer, to be able to access annotations the ?field? needs to be passed to it

This requires me to maintain a copy of the JavaSerializer class on my own, do you think that this is something that could be changed for the next release? The same applies to the deserializer of course.

Steps To Reproduce

Additional Information

Attached Files

JavaSerializer.java [^] (9,835 bytes) 07-28-08 04:43

JavaDeserializer.java [^] (18,069 bytes) 07-28-08 04:44

Relationships

Notes
(0003285) haraldradi 07-28-08 04:47	I attached the two files including the necessary modifications, sorry for not providing a diff.

Issue History
Date Modified	Username	Field	Change
07-18-08 08:55	ferg	New Issue
07-28-08 04:42	haraldradi	Issue Monitored: haraldradi
07-28-08 04:43	haraldradi	File Added: JavaSerializer.java
07-28-08 04:44	haraldradi	File Added: JavaDeserializer.java
07-28-08 04:47	haraldradi	Note Added: 0003285

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