[FLEX-23667] WebService problems dealing with <myArgument>null</myArgument> in SOAP request.

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Later
• Affects Version/s: Adobe Flex SDK 3.5 (Release)
• Component/s: RPC: WebService
• Environment: Affected OS(s): Windows; Affected OS(s): Windows; Browser: Firefox 3.x; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 01/Apr/10 10:53
• Updated: 26/Aug/10 16:38
• Resolved: 21/May/10 16:33

Description

Steps to reproduce:
1. Create simple web service that has a two string arguments, both required.
2. Consume web service in Flex using WebService
3. Pass first argument as "null" and second argument as "notnull"

Actual Results:
Call to web service fails, the first argument is missing.

Expected Results:
Web Service call should work.

Found that the issue occurs in XMLEncoder.encode(), Line 116 (Flex 3.5 SDK) at:

if (content != null)
result += content;

For example of the effect of this line, run the following snippet, the output is fail.:

private function operatorTest2():void {
var xml:XML = <inputData>null</inputData>;

if (xml != null)

{ trace("success"); } else { trace("fail"); }
}


Workaround:

Not tested within the Flex SDK yet, but using strict inequality makes it success:

private function operatorTest2():void {
var xml:XML = <inputData>null</inputData>;

if (xml !== null) { trace("success"); }

else

{ trace("fail"); }

}

Tested on 3.5 and 4.0, Flash Player 10.