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From "Paul Hodchenkov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AXIS2-5158) Improve JSON support in Axis2
Date Fri, 04 May 2012 17:46:49 GMT

    [ https://issues.apache.org/jira/browse/AXIS2-5158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13268568#comment-13268568
] 

Paul Hodchenkov commented on AXIS2-5158:
----------------------------------------

One of the possible minor issues here is that RPCMessageReceiver (at least in axis 2 1.6)
is sensitive to the top level arguments order. This produces a problem , if client (especially
flex client, which generates json key-value ordered by key's hash ) sends json top level arguments
in different order than expected by the method signature. RPCMessageReceiver will try to invoke
the service method with shuffled arguments.
                
> Improve JSON support in Axis2
> -----------------------------
>
>                 Key: AXIS2-5158
>                 URL: https://issues.apache.org/jira/browse/AXIS2-5158
>             Project: Axis2
>          Issue Type: Improvement
>          Components: json
>    Affects Versions: 1.6.1
>            Reporter: Paul Hodchenkov
>            Assignee: Andreas Veithen
>         Attachments: AbstractJSONBuilder.java, AbstractJSONMessageFormatter.java, ExtendedMappedXMLStreamWriter.java,
JSONBadgerfishBuilder.java, JSONBadgerfishMessageFormatter.java, JSONMappedBuilder.java, JSONMessageFormatter.java
>
>
> RawXMLInOutMessageReceiver can be only used in JSON services now [1].
> However, JSON/badgerfish builder can be improved by handling RPCMessageReceiver correctly.
I can't attach the patch because i have copy pasted and created my own formatters and builders(please
find the source attached):
> 1) It is possible to solve the namespace problem described at [1] by explicitly converting
JSON/badgerfish to SOAP in JSONbadgerfish builder :
> public OMElement processDocument(InputStream inputStream, String contentType,
> MessageContext messageContext) throws AxisFault {
> ....
> AbstractXMLInputFactory inputFactory = new BadgerFishXMLInputFactory();
> XMLStreamReader xmlReader = inputFactory.createXMLStreamReader(
> new JSONTokener(IOUtils.toString(reader)));
> OMNodeEx document = (OMNodeEx) new StAXOMBuilder(xmlReader).getDocumentElement();
> //removing parent
> document.setParent(null);
> //wrapping document with envelope
> SOAPFactory soapFactory = OMAbstractFactory.getSOAP11Factory();
> SOAPEnvelope soapEnvelope = soapFactory.getDefaultEnvelope();
> SOAPBody body = soapEnvelope.getBody();
> body.addChild(document);
> soapEnvelope.build();
>  //converting xml structure to soap xml structure,
> //this operation will construct SoapEnvelope,SoapBody,SoapFault instead of
> //regular OmElement
> StAXSOAPModelBuilder stAXSOAPModelBuilder = new StAXSOAPModelBuilder(soapEnvelope.getXMLStreamReader(),
null);
> return stAXSOAPModelBuilder.getSOAPEnvelope();
> ...
> }
> 2) jettison 1.2 has cool feature called setIgnoreNamespaces which allows to use json
formatter with any xml.
> We use the these builders and formatters successfully with JSON/badgerfish request and
JSON response.
> [1] http://isurues.wordpress.com/2009/10/06/how-to-use-axis2-json/

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