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From "Ben Burns (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLEX-33644) XMLEncoder improperly handles encoding the string "null".
Date Thu, 01 Aug 2013 18:09:49 GMT
Ben Burns created FLEX-33644:

             Summary: XMLEncoder improperly handles encoding the string "null".
                 Key: FLEX-33644
                 URL: https://issues.apache.org/jira/browse/FLEX-33644
             Project: Apache Flex
          Issue Type: Bug
          Components: RPC: General
    Affects Versions: Adobe Flex SDK 3.5 (Release)
            Reporter: Ben Burns

Found this bug while researching an answer for this StackOverflow question: http://stackoverflow.com/questions/4456438/how-can-i-pass-the-string-null-through-wsdl-soap-from-as3-to-coldfusion-web

If XMLEncoder is passed a string "null" (that is, a proper string, not null the placeholder
value), it's possible that the value will not be included in the encoded output. This appears
to be because of the equality check here: https://git-wip-us.apache.org/repos/asf?p=flex-sdk.git;a=blob;f=frameworks/projects/rpc/src/mx/rpc/xml/XMLEncoder.as;h=f9a223e66e35fa8a11095e4e458c5a09d92678eb;hb=4f20635628acdc09e8739c5f94ec644d20cbd959#l101
(this is HEAD at time of posting).

I believe that in that case, null is coerced to "null" and the equality test succeeds which
in turn sets content to null, causing the output to be omitted later in the encode method.

Note that this has been a problem since at least Flex 3.5, and probably longer. http://opensource.adobe.com/svn/opensource/flex/sdk/tags/

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