Dear Theun, The XSLT validation performed by oXygen tries to create a Transformer object out of the edited XSLT stylesheet. This performs a more powerful checking of the XSLT document (compared with for instance a validation against a specific schema) and the XSLT processor used for validation reports also XPath errors. The XPath content completion that oXygen offers on XSLT files is strongly related with the fact that the edited file is an XSLT document. From the associated transformation scenario we identify the document that can be the input for the stylesheet and we determine possible elements and attributes from there, we also take into account the XSLT instruction that change the context in order to offer correct completion proposals. As you see in the above description, both the validation and the content completion cannot be de-coupled from the XSLT editor immediately so the answer is no, you cannot have XPath validation and XPath content completion in the XML editor. However, there are a couple of things you can do. You can write a stylesheet to extract your XPath expression and generate as output another stylesheet that contains those XPath expressions associated eventually with information to easily identify where those XPath expression were extracted from. Then validate the generated stylesheet and if you find problems use that identification information to locate the expression in the original document. Another possibility is to take advantage of the fact that oXygen supports XPath 2.0 for Schematron using Saxon 8 and create an XML Schema with embedded Schematron rule and use the saxon:expression function to test that a specific value is an XPath expression, you can find below an example of this approach. XML Schema with embedded Schematron rules test.xsd <?xml version="1.0" encoding="UTF-8"?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:annotation> <xs:appinfo> <ns xmlns="http://www.ascc.net/xml/schematron" uri="http://saxon.sf.net/" prefix="saxon"/> </xs:appinfo> </xs:annotation> <xs:element name="test"> <xs:complexType> <xs:sequence> <xs:element ref="xpath" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="xpath"> <xs:annotation> <xs:appinfo> <pattern xmlns="http://www.ascc.net/xml/schematron" name="testXPath"> <rule context="xpath"> <assert test="saxon:expression(@expression)">Invalid XPath expression!</assert> </rule> </pattern> </xs:appinfo> </xs:annotation> <xs:complexType> <xs:attribute name="expression" type="xs:string"/> </xs:complexType> </xs:element> </xs:schema> test.xml <?xml version="1.0" encoding="UTF-8"?> <?oxygen SCHSchema="test.xsd"?> <test xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="test.xsd"> <xpath expression="test;"/> <xpath expression="test"/> <xpath expression="test"/> </test> reported error: SystemID: E:\george\test\p2\test.xml Description: Static error in XPath expression supplied to saxon:expression: XPath syntax error at char 4 in {test;}: Unexpected token ";" beyond end of expression The problem is that there is no tracing from the error to the source and all you can do is to get the expression between curly braces in this case test; and find it in your document. Hope that helps, George --------------------------------------------------------------------- George Cristian Bina <oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger http://www.oxygenxml.com Theun Fleer wrote:
Hello,
When editing XLST-files in oXygen7.2 on WinXP the XPath-expressions in the "select" and "match" attributes can be validated. When typing an incorrect XPath-expression, a wavy yellow line is shown, and an error description at the bottom of the screen; "content completion" is also an option.
We are currently editing non-XSLT-files: a custom XML format with a custom namespace in which we must edit a lot of long XPath-expressions. We would like the same validation options as in the XLST-files... is this possible, and how?
Kind regards, and keep up the good work!
Theun Fleer Daidalos BV, The Netherlands
Drs. T. Fleer Consultant GSM: +31 (0)6 40 58 50 27
Daidalos BV Source of Innovation Hoekeindsehof 1-4 2665 JZ Bleiswijk Tel.: +31 (0) 10 850 1200 Fax: +31 (0) 10 850 1199 www.daidalos.nl KvK 27164984
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