(Been trying to send this all day... the mailing list was bouncing)
Hi Jorge,
Standard BPEL assignments (using XPath) do not have the capability to insert
data into a nested structure. The structure must already exist in order to
select the target node in the <to> expression.
Your best bet is to use XSLT, which is recommended for any complex data
transformation in BPEL:
<bpel:assign>
<bpel:from>bpel:doXslTransform("foo.xsl", $foo)</bpel:from>
<bpel:to variable="foo" />
</bpel:assign>
You can see an example here
http://svn.apache.org/repos/asf/ode/trunk/bpel-test/src/test/resources/bpel/2.0/TestXslTransform/
There's been discussion about extending the <copy> activity to support
insertion. The current ideas/proposal can be found here:
http://cwiki.apache.org/confluence/display/ODExSITE/copy+with+insert+attribute
alex
On 8/14/07, Jorge RodrÃguez Pedrianes <[EMAIL PROTECTED]> wrote:
>
> These days I'm trying to use ODE to manage unbounded elements. For
> example,
> I have a process that returns an array of items:
>
>
>
> <consultaReturn>
>
> <items>
>
> <item>
>
> <param1>value1</param1>
>
> <param2>value2</param2>
>
> </item>
>
> <item>
>
> <param1>value3</param1>
>
> <param2>value4</param2>
>
> </item>
>
> </items>
>
> </consultaReturn>
>
>
>
> When, in bpel, I try to build this, I can't do it.
>
>
>
> My bpel is:
>
>
>
> <bpel:sequence>
>
> <bpel:assign>
>
> <bpel:copy>
>
> <bpel:from>
>
> <bpel:literal>1</bpel:literal>
>
> </bpel:from>
>
> <bpel:to>$numItems</bpel:to>
>
> </bpel:copy>
>
> <bpel:copy>
>
> <bpel:from>
>
> <bpel:literal>
>
> <consultaReturn>
>
> <items>
>
> <item>
>
> <param1 />
>
> <param2 />
>
> </item>
>
> </items>
>
> </consultaReturn>
>
> </bpel:literal>
>
> </bpel:from>
>
> <bpel:to>$result</bpel:to>
>
> </bpel:copy>
>
> <bpel:copy>
>
> <bpel:from>
>
> <bpel:literal>
>
> <item>
>
> <param1>value1</param1>
>
> <param2>value2</param2>
>
> </item>
>
> </bpel:literal>
>
> </bpel:from>
>
> <bpel:to>$auxItem</bpel:to>
>
> </bpel:copy>
>
> <bpel:copy>
>
> <bpel:from>$auxItem</bpel:from>
>
> <bpel:to>$result/items/item[$numItems]</bpel:to>
>
> </bpel:copy>
>
> <bpel:copy>
>
> <bpel:from>>$numItems + 1</bpel:from>
>
> <bpel:to>$numItems</bpel:to>
>
> </bpel:copy>
>
> <bpel:copy>
>
> <bpel:from>
>
> <bpel:literal>
>
> <item>
>
> <param1>value3</param1>
>
> <param2>value4</param2>
>
> </item>
>
> </bpel:literal>
>
> </bpel:from>
>
> <bpel:to>$auxItem</bpel:to>
>
> </bpel:copy>
>
> <bpel:copy>
>
> <bpel:from>$auxItem</bpel:from>
>
> <bpel:to>$result/items/item[$numItems]</bpel:to>
>
> </bpel:copy>
>
> </bpel:assign>
>
> </bpel:sequence>
>
>
>
> But whit this ODE construct
>
> <consultaReturn>
>
> <items>
>
> <item>
>
> <param1>value3</param1>
>
> <param2>value4</param2>
>
> </item>
>
> </items>
>
> </consultaReturn>
>
>
>
> What is the problem? Anybody know work with unbounded elements?
>
>
>
> Thanks
>
>
>
>
>
>
>
>
>
>
>
>
