Thanks Amila and Sanjiva. On Tue, Dec 27, 2011 at 9:13 AM, Sanjiva Weerawarana <sanj...@opensource.lk>wrote:
> +1 very nicely thought thru! You may also want to review how ADB > serializes Java onto the wire without going to an in-memory XML form first > .. you should be able to do something similar for JSON. > sure i will go through axis2 source code and relevant articles to understand current scenario of ADB serialization. As i have basic idea of how to do this improvement this will really help me to make a starting point to do this project. Thanks Shameera > > Sanjiva. > > > On Mon, Dec 26, 2011 at 11:19 AM, Amila Suriarachchi < > amilasuriarach...@gmail.com> wrote: > >> looks good. >> >> thanks, >> Amila. >> >> >> On Sun, Dec 25, 2011 at 7:39 PM, Shameera Rathnayaka < >> shameerai...@gmail.com> wrote: >> >>> Hi devs, >>> >>> I hope to select an axis2 related project to do in 2012 GSOC. Therefore >>> i did some basic research about Axis2 and found that Current Json support >>> in Axis2 can be improved using a rich library such as google-gson to use >>> normal JSON object to communicate with java services without converting it >>> to Badgerfish. >>> >>> Here is my proposal in brief. >>> >>> There are two ways that xml string can be converted into JSON string, >>> Badgerfish and Mapped . Current Axis2 with JSON module completely supports >>> Badgerfish convention[1] while partialy supports Mapped convention[1] as >>> Mapped formatted JSON with namespaces are not supported in Axis2. Therefore >>> if the client side java-script code needs to talk with java service which >>> is deployed in Axis2, it should be sent as Badgerfish convention. It is >>> cumbersome to generate Badgerfish convention of JSON string again and again >>> to call services if there is no xml representation string in client side. >>> >>> If java script client can send JSON object to relevant java service in >>> Axis2, defining service and operation in request url, without doing any >>> modifications to JSON objects, then it would be very helpful for >>> Java-Script users at client side. >>> >>> Here i propose a solution to implement this with some limitations by >>> using google-gson [2] <http://code.google.com/p/google-gson/> library >>> which is a rich library to convert JSON string to Java object and >>> vice-versa and also it is released under Apache license. Using this library >>> we can improve JSON support in Axis2 to overcome above problem. Following >>> are some advantages of using gson to convert JSON to Java object and >>> vice-versa. >>> >>> - Provide simple toJson() and fromJson() methods to convert Java >>> objects to JSON and vice-versa >>> - Allow pre-existing unmodifiable objects to be converted to and >>> from JSON >>> - Extensive support of Java Generics >>> - Allow custom representations for objects >>> - Support arbitrarily complex objects (with deep inheritance >>> hierarchies and extensive use of generic types) >>> >>> As i mentioned there are several limitations because we are not using >>> namespace mapping. As an example if wsdl has two methods with same name but >>> different namespace then this method will fail,But there are ways we can >>> find a solution to fix this to some extent. >>> >>> Also i have some basic idea about how to implement this improvement, as >>> follows. Here i have assumed that service name and operation name can be >>> read from request URL. Then incoming message can be dispatched to correct >>> operation. >>> >>> >>> 1. write a jsonMessagebuilder to read incoming json string under >>> specific content type. >>> >>> 2. store json string without doing any process untill it reaches >>> JsonMessageReceiver. JsonMessageReceiver is a new Message Receiver which >>> use gson to convert json to java objects, call relevant operation and get >>> result. >>> >>> >>> 3. write a jsonMessageFormatter to write output stream according to >>> content type. >>> >>> >>> I would like to know that whether this is a good idea and will it be >>> allright to do this as GSOC project. >>> >>> [1]http://wso2.org/library/768 <http://wso2.org/library/768> >>> [2]http://code.google.com/p/google-gson/<http://code.google.com/p/google-gson/> >>> >>> Thanks >>> Shameera. >>> >>> -- >>> Shameera Rathnayaka >>> Undergraduate >>> Department of Computer Science and Engineering >>> University of Moratuwa. >>> Sri Lanka. >>> >>> Blog : http://shameerarathnayaka.blogspot.com/ >>> >>> >> >> >> -- >> Amila Suriarachchi >> WSO2 Inc. >> blog: http://amilachinthaka.blogspot.com/ >> > > > > -- > Sanjiva Weerawarana, Ph.D. > Founder, Director & Chief Scientist; Lanka Software Foundation; > http://www.opensource.lk/ > Founder, Chairman & CEO; WSO2; http://wso2.com/ > Founder & Director; Thinkcube Systems; http://www.thinkcube.com/ > Member; Apache Software Foundation; http://www.apache.org/ > Visiting Lecturer; University of Moratuwa; http://www.cse.mrt.ac.lk/ > > Blog: http://sanjiva.weerawarana.org/ > > -- Shameera Rathnayaka Undergraduate Department of Computer Science and Engineering University of Moratuwa. Sri Lanka. Blog : http://shameerarathnayaka.blogspot.com/
