Как назначить текущую дату в WSO2 BPEL?

Question

Я не нашел способ присвоения текущей даты в WSEL2 BPEL. Я попытался это:

$ode:currentEventDateTime

<bpel:from expressionLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0"> 
<![CDATA[$ode:currentEventDateTime]]> 
</bpel:from> 

Это вызывает ошибку:

[UndeclaredVariable] Attempt to reference undeclared variable "currentEventDateTime" while deploying

fn:current-dateTime or current-dateTime()

<bpel:from expressionLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0"> 
<![CDATA[fn:current-dateTime]]> 
</bpel:from> 

Fault Name {http: //docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure
Fault Message {http: //docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure: R-Value expression "{OXPath10Expression fn:current-dateTime}" did not select any nodes.
Fault Data No data available.

<bpel:from expressionLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0"> 
<![CDATA[fn:current-dateTime()]]> 
</bpel:from> 

поднимает:

ERROR {org.wso2.carbon.bpel.ui.fileupload.BPELUploadExecutor} - BPEL Process Compilation Failure.
org.apache.ode.utils.NSContext$NSContextException: Namespace not found for prefix "fn" while deploying.

<bpel:from expressionLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0"> 
<![CDATA[current-dateTime()]]> 
</bpel:from> 

Fault Name {http: //docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure
Fault Message {http: //docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure: An exception occured while evaluating "{OXPath10Expression current-dateTime()}": No Such Function current-dateTime
Fault Data No data available.

Answer 1

Я нашел решение с помощью преобразования XSL
BPEL:
<bpel:copy>
<bpel:from>bpel:doXslTransform("datetime.xsl", $variable.part)</bpel:from>
<bpel:to part="parameters" variable="var"></bpel:to>
</bpel:copy>

XSL:
<xsl:stylesheet version="1.0">
<xsl:template match="/">
<!--variable structure-->
<cmism:deliveryDate><xsl:value-of select="current-dateTime()"/>
</cmism:deliveryDate>
</xsl:template>
</xsl:stylesheet>