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From "Anish Pyne (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AXIS2-4859) Optional "Ignore Unexpected Elements" mode - allows for forward-compatible clients
Date Fri, 15 Apr 2011 15:44:05 GMT

    [ https://issues.apache.org/jira/browse/AXIS2-4859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13020326#comment-13020326
] 

Anish Pyne commented on AXIS2-4859:
-----------------------------------

Can we please have this patch in Axis 2 release as early as possible. This issue is causing
a lot of pain for many people. 


> Optional "Ignore Unexpected Elements" mode - allows for forward-compatible clients
> ----------------------------------------------------------------------------------
>
>                 Key: AXIS2-4859
>                 URL: https://issues.apache.org/jira/browse/AXIS2-4859
>             Project: Axis2
>          Issue Type: New Feature
>          Components: codegen
>    Affects Versions: 1.5.2, 1.5.3, 1.6.0
>            Reporter: Dean Holdren
>         Attachments: iu_1_5.patch, iu_trunk.patch, names_v1.response, names_v1.wsdl,
names_v2.response
>
>
> Problem: Service provider adds an optional element to the responses it sends, assuming
client can handle, while client is unaware and has not (or cannot) retrieve updated WSDL and
regenerate client.  Axis2 client generated with ADB, cannot handle and throws an exception.
> Solution:
> Optional "Ignore Unexpected Elements" mode for wsdl2java using adb - allows for forward-compatible
clients that can recover from unxpected elements in service responses.
> Based on the work in Issue 3037 - This patch is more up to date, is for both trunk and
1_5 branch, handles more scenarios, and will correctly parse the portion of the response after
the unexpected element.
> To use, pass the "-Eiu" parameter to wsdl2java
> Handles the following scenarios:
> 1) unexpected element in a xsd:choice, xsd:any, xsd:all
> 2) appended unexpected element in a xsd:sequence.
> For xsd:sequence, the unexpected element, and subsequent elements within that sequence
are not captured. If a service adds a new element within a sequence, it should be *appended*,
as the generated client is strict with ordering, and can't differentiate an out-of-order sequence
from an additional inserted element.

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