Nice try but no cookie! ; )
"nodeList" in the SimpleXMLExtractor code is always empty for all the XPaths I have tried and therefore the "properyValue" will always be null.
Instruction instruction = (Instruction) i.next();
XPath xPath = instruction.getxPath();
List nodeList = xPath.selectNodes(document);
Object propertyValue = filter(nodeList, instruction);
if (propertyValue != null) {
properties.put(instruction.getPropertyName(), propertyValue);
}
The "compiled" value of the xpath you suggested is /child::*[(name() = "article")]/child::*[(name() = "author")] if that tells anyone anything...
Has anyone gotten SimpleXMLExtractor to work at all?
best regards Eirikur, Idega.
On 14.1.2005, at 04:21, James Mason wrote:
Disclaimer: I have no idea if this will work ;).
I ran into a similar issue with dom4j and namespaces in another application. Using a xpath like:
/*[name() = 'article']/*[name() = 'headline']
worked in that case.
-James
On Wed, 2005-01-12 at 13:32 +0000, Eirikur Hrafnsson wrote:I found one thing that it might be related to. I used an example <instruction> from Domain.xml and that doesn't specify a namespace but I found that in SimpleXMLExctractor the method protected Instruction createInstruction(Configuration instruction) throws ConfigurationException { try { String property = instruction.getAttribute("property"); String namespace = instruction.getAttribute("namespace", "DAV:"); XPath xPath = XPath.newInstance(instruction.getAttribute("xpath")); return new Instruction(xPath, PropertyName.getPropertyName(property, namespace)); } catch (JDOMException e) { throw new ConfigurationException("Could not create xPath from given attribute", instruction); } }
seems to require a namespace or it used the default "DAV:" namespace so
I changed the xpath instructions to
<instruction
namespace="http://xmlns.idega.com/com.idega.block.article";
property="headline" xpath="/article/headline" />
...
and the xml to (just testing hope there isn't a real need): <article xmlns:I="http://xmlns.idega.com/com.idega.block.article";> <I:headline>Header</I:headline> <I:teaser>Teaser</I:teaser> <I:body>Body</I:body> <I:author>Author</I:author> <I:source/> <I:comment>Comment</I:comment> </article>
But sadly it behaves the same way....
Eirikur, idega.
On 11.1.2005, at 22:21, Daniel Florey wrote:
I think the problem might be different. It's just some time ago that I've written the SimpleXMLExtractor thing. If I find the time I'll look at it tomorrow. My first guess would be that it was developed using a different version of jdom. Something might have changed as Slide was updated to jdom1.0 AFAK.
Cheers, Daniel
"Slide Developers Mailing List" <[email protected]> schrieb
am 11.01.05 22:33:44:
Nope...same deal. The "compiled" path for that example is /child::article/child::headline and propertyValue is still null.
-Eirikur, idega.
On 11.1.2005, at 20:27, Flick, Tim wrote:
It may be simpler than you think!
Try this:
"/article/headline"
This should return the value of article/headline, which in your example would be "Header". I hope?
Regards, Tim
-----Original Message----- From: Eirikur Hrafnsson [mailto:[EMAIL PROTECTED] Sent: Tuesday, January 11, 2005 2:52 PM To: Slide Developers Mailing List Subject: Re: Need simple XPath help
The problem is that I trying to get the SimpleXMLExtractor to extract
those values as properties for the Lucene index but this code in
SimpleXMLExtractor always returns "propertyValue" as null.
public Map extract(InputStream content) throws ExtractorException { Map properties = new HashMap(); try { SAXBuilder saxBuilder = new SAXBuilder(); Document document = saxBuilder.build(content); for (Iterator i = instructions.iterator(); i.hasNext();) { Instruction instruction = (Instruction) i.next(); XPath xPath = instruction.getxPath(); List nodeList = xPath.selectNodes(document); Object propertyValue = filter(nodeList, instruction); if (propertyValue != null) { properties.put(instruction.getPropertyName(), propertyValue); } in Domain.xml I have the third try...I obviously know nothing about XPath ;) <!-- Extractor configuration --> <extractors> <!--XML extractors--> <extractor classname="org.apache.slide.extractor.SimpleXmlExtractor" uri="/files"> <configuration> <instruction property="headline" xpath="/article/headline[1]" /> <instruction property="teaser" xpath="/article/teaser[1]" /> <instruction property="body" xpath="/article/body[1]" /> <instruction property="author" xpath="/article/author[1]" /> <instruction property="source" xpath="/article/source[1]" /> <instruction property="comment" xpath="/article/comment[1]" /> </configuration> </extractor> ...
-Eirikur, Idega.
On 11.1.2005, at 19:36, Daniel Florey wrote:
A assume your examples didn't work... The xpath expression looks correct to me. What exactly is the encountered problem? Cheers, Daniel
"Slide Developers Mailing List" <[email protected]> schrieb
am 11.01.05 20:18:45:
Anyone know what is the XPath to the content of the xml tags in
this
example? I've tried some paths but I'm barely a novice in XPath...
<article xmlns="http://idega.com/block/article/bean";> <headline>Header</headline> <teaser>Teaser</teaser> <body>Body</body> <author>Author</author> <source/> <comment>Comment</comment> </article>
I tried e.g. : "/article/headline[1]/text()" and just "/article/headline/text()"
best regards
Eirikur, idega.
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