I've now created a bug to track this: https://issues.apache.org/jira/browse/ODE-498
alex On Thu, Jan 22, 2009 at 12:34 AM, ZHAO Wenfeng <[email protected]>wrote: > Hello Alexey, > > "[number(string($signer))]" :-) > > And in your case, it seems this problem doesn't occur in from-spec, > and only occurs in to-spec, isn't it? > > So, there must be a bug here, I think. > > > Regards. > Wenfeng > > > ======= 2009-01-22 13:56:07 您在来信中写道：======= > > >Hello! > >I also encountered this bug. This is very strange and unexpected bug. > >After some debugging time I found a workaround, and I think this worth > >reporting in JIRA. Here is piece of my process: > > > ><?xml version="1.0" encoding="UTF-8"?> > ><bpws:forEach counterName="signer" name="ForEachSignerUserName" > > parallel="no"> > > <bpws:startCounterValue><![CDATA[1]]></bpws:startCounterValue> > > > > ><bpws:finalCounterValue><![CDATA[count($processingData/pdata:signer)]]></bpws:finalCounterValue> > > <bpws:scope name="CheckSignerRolesScope"> > > <bpws:sequence name="CheckSignerRoles"> > > <bpws:assign name="prepareGetSignerDbId" validate="no"> > > <bpws:copy> > ><!-- *this works fine!* --> > > > > ><bpws:from><![CDATA[$processingData/pdata:signer[$signer]/@name]]></bpws:from> > > > ><bpws:to><![CDATA[$getUsers.parameters/ps:nameFilter]]></bpws:to> > > </bpws:copy> > > </bpws:assign> > > <bpws:assign name="ExtractSignerInfo" validate="no"> > > <bpws:copy> > > > ><bpws:from><![CDATA[$getUserMembershipsResponse.parameters]]></bpws:from> > ><!-- *this don't work!* --> > > > > ><bpws:to><![CDATA[$processingData/pdata:signer[$signer]/pdata:memberships/*[1]]]></bpws:to> > > </bpws:copy> > > </bpws:assign> > > </bpws:sequence> > > </bpws:scope> > ></bpws:forEach> > > > >As I said after some tricks, I made it work without temporary variable > >as Wenfeng mentioned. > ><?xml version="1.0" encoding="UTF-8"?> > ><bpws:forEach counterName="signer" name="ForEachSignerUserName" > > parallel="no"> > > <bpws:startCounterValue><![CDATA[1]]></bpws:startCounterValue> > > > > ><bpws:finalCounterValue><![CDATA[count($processingData/pdata:signer)]]></bpws:finalCounterValue> > > <bpws:scope name="CheckSignerRolesScope"> > > <bpws:sequence name="CheckSignerRoles"> > > <bpws:assign name="prepareGetSignerDbId" validate="no"> > > <bpws:copy> > ><!-- *this works fine!* --> > > > > ><bpws:from><![CDATA[$processingData/pdata:signer[$signer]/@name]]></bpws:from> > > > ><bpws:to><![CDATA[$getUsers.parameters/ps:nameFilter]]></bpws:to> > > </bpws:copy> > > </bpws:assign> > > <bpws:assign name="ExtractSignerInfo" validate="no"> > > <bpws:copy> > > > ><bpws:from><![CDATA[$getUserMembershipsResponse.parameters]]></bpws:from> > ><!-- *this works also* --> > > > > ><bpws:to><![CDATA[$processingData/pdata:signer[number(string($signer))]/pdata:memberships/*[1]]]></bpws:to> > > </bpws:copy> > > </bpws:assign> > > </bpws:sequence> > > </bpws:scope> > ></bpws:forEach> > > > >Regards, > >Alexey Ousov > > > >> Hi Alex, > >> > >> Thanks. But I had checked the issues you mentioned. The problem > must be in elsewhere. Notice that when I simply replace $i with a normal > unsignedInt variable $_i1, turning the piece above into: > >> <forEach counterName="i" parallel="no"> > >> <startCounterValue>1</startCounterValue> > >> <finalCounterValue>2</finalCounterValue> > >> <scope> > >> <assign> > >> <copy> > >> <from variable="i" /> > >> <to variable="_i1"/> > >> </copy> > >> <copy> > >> <from>$i</from> > >> <to>$output0.body/xsd0:field1[position()=$_i1]</to> <!-- > note this line --> > >> </copy> > >> </assign> > >> </scope> > >> </forEach> > >> it works fine! > >> > >> The attachements is the process files and you can try it. My environment > is: ODE 2.0 Build #87 (2009-1-8 2:25:04). > >> > >> Thanks&Regards. > >> Wenfeng > >> > >> ======= 2009-01-21 23:36:47 您在来信中写道：======= > >> > >> > >>> "No result for expression ... " does not mean "$i does not work in > XPath > >>> predicate expression". > >>> > >>> http://ode.apache.org/faq.html > >>> > >>> *Q.* *My process fails with a selectionFailure; What can I do?* > >>> *A.* BPEL expects a *single* element to be selected when evaluating > <to> and > >>> <from> expressions, and a selectionFailure fault is thrown if zero or > more > >>> than one element are selected. > >>> > >>> If you get zero element, double-check your namespace prefix and > bindings. > >>> Also, remember that you must initialize your variables (most often with > >>> <literal>'s) before assigning into them, unless your are reassigning > the > >>> whole variable (e.g. directly into $variable, or $variable.part). To > debug > >>> assignments, you can set the "org.apache.ode" logging category to DEBUG > in > >>> order to see the content of variables as the process executes. > >>> > >>> > >>> 2009/1/21 ZHAO Wenfeng <[email protected]> > >>> > >>> > >>>> Hi all, > >>>> I found another BUG-like problem in ODE 2.0 Build #87 (2009-1-8 > 2:25:04). > >>>> That is: the counterName variable can't be used in the position > expression > >>>> of XPath as normal variables are. For example, the following BPEL > piece > >>>> <forEach counterName="i" parallel="no"> > >>>> <startCounterValue>1</startCounterValue> > >>>> <finalCounterValue>2</finalCounterValue> > >>>> <scope> > >>>> <assign> > >>>> <copy> > >>>> <from>$i</from> > >>>> > <to>$output0.body/xsd0:field1[position()=$i]</to> > >>>> <!-- note this line --> > >>>> </copy> > >>>> </assign> > >>>> </scope> > >>>> </forEach> > >>>> will incur such ERROR in ODE: > >>>> > >>>> ERROR - GeronimoLog.error(104) | Assignment Fault: { > >>>> > http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure,lineNo=149,faultExplanation={http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure<http://docs.oasis-open.org/wsbpel/2.0/process/executable%7DselectionFailure,lineNo=149,faultExplanation=%7Bhttp://docs.oasis-open.org/wsbpel/2.0/process/executable%7DselectionFailure> > < > http://docs.oasis-open.org/wsbpel/2.0/process/executable%7DselectionFailure,lineNo=149,faultExplanation=%7Bhttp://docs.oasis-open.org/wsbpel/2.0/process/executable%7DselectionFailure > >: > >>>> No results for expression: {OXPath10Expression > >>>> $output0.body/xsd0:field1[position()=$i]} > >>>> 12:39:37,781 ERROR [ASSIGN] Assignment Fault: { > >>>> > http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure,lineNo=149,faultExplanation={http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure<http://docs.oasis-open.org/wsbpel/2.0/process/executable%7DselectionFailure,lineNo=149,faultExplanation=%7Bhttp://docs.oasis-open.org/wsbpel/2.0/process/executable%7DselectionFailure> > < > http://docs.oasis-open.org/wsbpel/2.0/process/executable%7DselectionFailure,lineNo=149,faultExplanation=%7Bhttp://docs.oasis-open.org/wsbpel/2.0/process/executable%7DselectionFailure > >: > >>>> No results for expression: {OXPath10Expression > >>>> $output0.body/xsd0:field1[position()=$i]} > >>>> > >>>> > >>>> But when I simply replace $i with a normal unsignedInt variable $_i1, > >>>> turning the piece above into: > >>>> <forEach counterName="i" parallel="no"> > >>>> <startCounterValue>1</startCounterValue> > >>>> <finalCounterValue>2</finalCounterValue> > >>>> <scope> > >>>> <assign> > >>>> <copy> > >>>> <from variable="i" /> > >>>> <to variable="_i1"/> > >>>> </copy> > >>>> <copy> > >>>> <from>$i</from> > >>>> > <to>$output0.body/xsd0:field1[position()=$_i1]</to> > >>>> <!-- note this line --> > >>>> </copy> > >>>> </assign> > >>>> </scope> > >>>> </forEach> > >>>> it works fine! How strange! The expression language and query language > used > >>>> are both the default one, i.e. XPath 1.0. > >>>> > >>>> Need I commit a bug report to the developers of ODE? :-) > >>>> > >>>> Thanks & Regards. > >>>> Wenfeng > >>>> > >>>> > >>>> > >>>> ZHAO Wenfeng > >>>> [email protected] > >>>> 2009-01-21 > >>>> > >>>> > >> > >> = = = = = = = = = = = = = = = = = = = = > >> > >> > >> 致 > >> 礼！ > >> > >> > >> ZHAO Wenfeng > >> [email protected] > >> 2009-01-22 > >> > >> > > > > > > = = = = = = = = = = = = = = = = = = = = > > > 致 > 礼！ > > > ZHAO Wenfeng > [email protected] > 2009-01-22 > >
