XPath Expression Builder

Hi is there a way to turn off the validation the XPath Expression Builder does. I use a really large xsd schema, and it makes my pc very very slow..
Regards

http://download-uk.oracle.com/docs/cd/B14099_16/integrate.1012/b14448/appx_deploydesc.htm
if you search in this document on : xpathValidation
you are able to switch off the validation.
I don't know if this only counts for the expressions in the expression-fields of an assign or also in the xsl mapper.

Similar Messages

XPath Expression Builder Performance after Oracle FMW PS4 Upgrade

Hi,
Is there anyone out there on OFMW PS4 and facing performance issues with the BPEL Assign 'XPath Expression Builder'. We have a scenario where the BPEL process has to reference many schemas (arnd. 50+) from referenced Partner Link WSDLs and its own composite. The Expression Builder seems to be very very slow (takes minutes to load) as compared PS2 (only seconds).
Are we alone on this one / anyone has any experience/fix/workaround?
BTW,
We've unchecked the "Validate" check box from SOA Preferences, still no luck.
Regards,
Srinath.

Hi,
Is there anyone out there on OFMW PS4 and facing performance issues with the BPEL Assign 'XPath Expression Builder'. We have a scenario where the BPEL process has to reference many schemas (arnd. 50+) from referenced Partner Link WSDLs and its own composite. The Expression Builder seems to be very very slow (takes minutes to load) as compared PS2 (only seconds).
Are we alone on this one / anyone has any experience/fix/workaround?
BTW,
We've unchecked the "Validate" check box from SOA Preferences, still no luck.
Regards,
Srinath.

Custom XPath function & customize XPath expression builder

Hi,
I have made several custom XPath functions and apparently it is not possible to customize the UI and add these functions to the XPath expression builder.
Could someone confirm this ?
Thanks

Nobody knows the answer?
I just have the same question.

Failed to initialize the XPath Expression Builder

Any idea what causes this and/or how to fix it?
When I am in the XPath Expression Builder, I pick "Conversion Functions" and start with "string". Inside the "string()" parentheses, I do "bpws:getVariableData()", and select my output variable from an invoke.
Then it SHOULD allow me to continue picking parts of that variable, down to the node I want, but instead I see in my JDeveloper log that a "Failed to initialize the XPath Expression Builder" error has been thrown.
Thoughts appreciated...
Smalls

Can any of you Oracle guys help with this today?

Using xpath expressions in Document-Builder

Hi all
we have re-designed our (existing) DDX-templates with the Document Builder in LC Workbench. The DDX templates are used to assemble PDFs with LC Assembler-Service.
Now my question: Is it still possible to use XPath-expression in the DDX template? Please find our example below:
The XPath expression works only if we copy&paste the DDX source code directly to the Assembler-Service property view (picture below). But referring the DDX-template doens't interpret the xpath path at run time (2nd picture below). Any help on that will be appreciated!
Works (using DDX source code directly):
Doesn't work (using DDX template):

Hi,
>
I tried to get a portion of an XML by using XPath Expressions as follows:
String xPathExpression =
"declare namespace xq='http://inti.notariado.org/indices' " +
"$this/xq:RULES/xq:RULE[@disabled]";
I think any XPath expressions which use [] are not supported in stand alone
version, but as this is not documented I could be wrong.
Regards
Arek

Checking for empty tags using expression builder for XPATH

I am creating several filters in a mediator for several parallel paths. I am trying to route the mediator to the correct DB adapter based on what tags are empty in the incoming XML. The XML has 1 required tag and 3 optional. So for the expression, I am using the expression builder to load the tag name then putting either [text()] or [not(text())] immediately after each tag with an "and" in between for the 3 optional elements. The problem I am having is they always return false. For example, if I enter a value for an optional tag and put [text()] after it, it evaluates to false. What is the correct way to check if an element has text or not?
Thanks in advance!

Hi,
Its not recognizing the getVariableData func... instead try this:
string-length(xpath)>0
ex: string-length($in.body/imp1:manoj/imp1:C1)>0
It works... Happy deploying ... :)

Using xpath-expressions inside Task Instructions

Hi all,
I have a process where I would like to build up the task Instructions in a string variable. However I cannot seem to resolve xpath values when I am putting my string as the task instruction.
How can I do this?
Thanks in advance
Sincerely
Kim Christensen

Hi again Marcel - thanks for your quick reply
However I am not sure I und erstand your answer correctly.
I have a string variable (str_Inctructions) that I want to set as my Task Instruction.
So at a point in my process I create a set value with an expression like this:
str_Instructions = 'Here are some instructions for {$/process_data/myOtherVar$} please follow them.'
I then set str_Instructions as the Task Instructions (an xpath-expression). When I get the Task in Workspace I see the {$/process_data/myOthervariable$} instead of the value of myOtherVar.
So how can I get the value of myOtherVar?

Parsing XPath Expressions

Is there a Java API that parses XPath expressions and produces the resultant XPath tree in memory?
For example the xpath expression: /a/b[c/d]/e/f
will produce a tree with "a" as the root node, "b" as a sub-node, "c" and "e" as subnodes of "b" and so on.
I don't want one that is to be evaluate against and XML document. I just want the XPath Expression tree to be build in memory.
Thanks

hi,
look at javacc, a compiler very popular, with many examples.
Raymond

Nested XPath expressions

Hello,
I am using jsp to read an xml file, then build a table from the contents. My xml looks like this:
<document>
     <first> Text of First tag
             <second> Text of second tag
                  <inner> Text of inner tag</inner>
                  <inner> Text of inner tag</inner>
             </second>
     </first>
     <first> Text of First tag
             <second> Text of second tag
                 <inner> Text of inner tag</inner>
                 <inner> Text of inner tag</inner>
             </second>
     </first>
</document>I am using the standard tag library to iterate over the nodes of type <first>. My problem is that when I get to each <first> node, I want to iterate over each <inner> node, but I don't know how to reference them with XPath. Here is a snippet of my jsp:
        <c:import var="xml" url="test2.xml"/>
     <x:parse varDom="dom" xml="${xml}"/>
        <x:forEach var="First" select="$dom/document/first">     // iterates over each <first> tage
          <x:set var="Second"      select="string($First/second)" />     // only one second tag per first tag
          <x:forEach var="inner" select="$Second/inner" >          // now I want to loop over all the <inner> tags
                     // process inner tags here
          </x:forEach>
        </x:forEach>I can't figure out how to access the inner tags with xpath. I can access the "Second" variable, but when I try to go into the second loop, I can't get the text of the <inner> tag. Any suggestions?

Good question. I looked at the documentation for the x:forEach element, and it says that it sets the context node to each element of the iteration. So, inside your x:forEach element you can assume that the context node is a first element from your document. The XPath expression to find your inner elements relative to that context node is "inner/second". So:<x:forEach var="inner" select="second/inner" >

XPath expression to element with xsl: namespace

Hi,
I have a problem selecting a node in an XSL document. What I'm trying to do is to load an XSL file and change the 'select' attribute of <xsl:for-each select='//whatever'>
I tried it something like this:
Node articleSelect = XPathAPI.selectSingleNode(xslDOM, "//for-each");
articleSelect.getAttributes().getNamedItem("select").setNodeValue("//article[@ArticleNr='" + articleNumber + "']");However, articleSelect is always null so the second line throws an exception. I also tried "//xsl:for-each" and "//xsl:for-each[@select='//whatever']" and whatnot as the XPath expression, but still no luck... :(
Any thoughts or ideas will be greatly appreciated :)
Greetings,
Erik

Erik, your code is working fine but you must ensure that the document builder used to create xslDOM has nameSpaceAware = true!
May I suggest this rewriting - not necessary - but more clear I think:
Element articleSelect = (Element) XPathAPI.selectSingleNode(xslDOM, "//xsl:for-each");
articleSelect.setAttribute("select", "//article[@ArticleNr='" + articleNumber + "']");

Xpath expression don't work

i need to select two "sect" by idtry {
            // parse the XML as a W3C Document
            DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
            Document doc = builder.parse(new File("book1.xml"));
            XPath xpath = XPathFactory.newInstance().newXPath();
            String expression = "//chapter/sect[@id='secC'] | //chatpter/sect[@id='secA']"; //select two attributes (this don't works, why?)
            // obtain the element as a node.
            Node node = (Node)xpath.evaluate(expression, doc, XPathConstants.NODE);but using the same Xpath expression on xsl the expressions works
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
    <xsl:template match="/">
        <xsl:copy-of select="//chapter/sect[@id='secB']| //chapter/sect[@id='secC']"/>
    </xsl:template>
</xsl:stylesheet>may xml file <chapter id="chapter1">
        <sect id="secA">
                <para id="a1">texto a1.</para>
                <para id="a2">texto a2.</para>
                <para id="a3">texto a3.</para>
        </sect>
        <sect id="secB">
                <para id="b1">texto b1.</para>
                <para id="b2">texto b2.</para>
                <para id="b3">texto b3.</para>
        </sect>
<sect id="secC">
                <para id="c1">texto b1.</para>
                <para id="c2">texto b2.</para>
                <para id="c3">texto b3.</para>
        </sect>
</chapter>can anyone help?

The result of the query consists of two nodes. If you want to access both of them, use the NodeList type in place of the Node type:NodeList nodeList = (NodeList)xpath.evaluate(expression, doc, XPathConstants.NODESET);

Xpath expression not working with xmlparserv2 10.x jar in websphere application server 8

Hi,
I am using xmlparserv2 10.x jar in websphere application server to transform xml. Due to some unknown reason we are seeing inconsistent result for the xpath expression we used inside the xslt.
.|following-sibling::* This is the xpath expression we use.
the meaning of the expression is to union the current node and the following siblings of the current node. But while rendering the page( a servlet) for first two times it gives the expected result. From the third time, it is giving unexpected results. It is missing the first node in the following-sibling::* So it just results in current node and misses the next node and then combine the nodes following the next node.
For example when executing the above expression on the node A , it should result A B C D. It is returing correctly for first 3 times. From the 4th time it just results A C D and misses B.
<root>
     <A />
     <B />
     <C />
     <D />
</root>
But it giving results consistently when using xmlparserv2 9.x jar. But it is not 1.5 compliant.
Pleas help!..
Thanks,
SP.

If you are new to JSF, then I'd try and simplify the environment in which you are working as the first step to achieving a successful outcome.
JSF 1.2 is a certified and well tested component of WLS, so we know it works. I'm not sure of the effect of all those additional modules you are adding in there -- it appears as if you have gotten a Faces implementation instantiated, but there could be some form of version difference/conflict since it can't find a method its looking for.
Using Oracle Enterprise Pack for Eclipse (http://www.oracle.com/technology/software/products/oepe/oepe_11115.html) you can build yourself out a pretty simple JSF application to get started from and deploy it to a WLS server. This would remove all the additional libraries you currently have, provide you with a bundled applicaton to deploy and give you a pretty good environment from which you can learn and experiment with JSF.
-steve-

The XPath expression problem

Hi everyone,
I developed a workflow. I builded and deployed successfully.
And I assing this workflow to a policy.
I create a request, but this request gave a fail.
Error in <assign> expression: <to> value is empty at line "181". The XPath expression : "" returns zero node, when applied to document shown below:
Line 181 :
<copy>
<from variable="inputVariable" part="payload"
query="/ns3:process/ns4:RequestID"/>
<to variable="initiateTaskInput" part="payload"
query="/ns2:initiateTask/task:task/task:payload/task:RequestID"/>
</copy>
It seems that I could not take requestID.
Do you have any idea ?
Thanks for your help.
Regards

How did you resolve the issue? We're facing the same problem.

Human task expression builder (10.1.3.1 GA)

When I open up the Expression builder while inside the humanTask builder/editer/whatchamacallit I cannot see any BPEL variables. The Title displayed in the Expression builder is schema (vs the BPEL variables I see elsewhere). This gives me access to Task variables which isn't what I want. I want access to BPEL variables to use my dynamic expressions.
In addition to the above the expression builder is essentially broken within the humanTask. <Control><space> doesn't work properly.
This has behaved the same in both the developer preview and GA versions. Tell me that this some stupid configuration parameter that I've got fouled up. I can't deal with it as I'm currently experiencing.

The Expression editor inside of the Human Task editor does not show the BPEL variables as the XPath expressions are not evaluated from the context of a BPEL instance, but are executed in the context of the Human Task instance. This is not a bug.
In order to refer to BPEL variables, one can use input parameters (as noted by John above). You can also map the output parameters from the task to BPEL variables - once the Human Task activity completes.
Please refer to section 15.6.5.2.1 of Oracle® BPEL Process Manager Developer's Guide for details.
Best Regards,
Sidda

Expression Builder performance

Is there anything that can be done about the Expression Builder performance? Whenever I need to make a change to an XPath expression I've got to wait 2-3 minutes for JDev to respond. Very irritating. I'm using 10.1.3.3.0 (Build 070615.0525)

If you look at this document :
http://download.oracle.com/docs/cd/B31017_01/integrate.1013/b28981/appx_deploydesc.htm
and search for :
xpathValidation
"xpathValidation Default value is True. If set to False, the compiler does not validate the XPath queries."
maybe this is what you need.

XPath Expression Builder

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