Thanks to both users who gave me pointers on this. It's gotten me so close, but I'm not quite there yet.
Setting the "sourceID" ID to the variable "source" every iteration is a good idea and works fine (I added <x:out select="$source" /> within the outer forEach to verify). However, the XPath expression that compares this variable with the sourceID from the news source XML file doesn't seem to work: <x:forEach select="$newsSources//[EMAIL PROTECTED]"> It doesn't error out; it just doesn't give any results. Any other thoughts? Thanks again for the time, Dylan -----Original Message----- From: Bill Siggelkow [mailto:[EMAIL PROTECTED] Sent: Friday, March 26, 2004 12:42 PM To: [EMAIL PROTECTED] Subject: Re: XML XPath expression help Dylan, you could try using <x:set> to expose the sourceID as a variable that then referenced in the inner <x:forEach> like the following: <x:forEach select="$news//eachNewsArticle"> <x:set select="sourceID" var="source"/> <tr> <td> <x:out select="articleDate" /> </td> <x:forEach select="$newsSources//[EMAIL PROTECTED]"> ... It should work but I have not actually tried it so YMMV ... Dylan MacDonald wrote: > Hi - > > Last week I had a question about writing an XPath expression that would > retrieve only the first few records from an XML source. I got an immediate > response which worked perfectly. Hopefully I'll have the same luck with > this question. > > I have a JSP page that displays a list of random internet articles that I > use in my corporate intranet. The list includes the article title and a > link to the article, as well as the source and the link to the source's > website. > > While the articles are all unique, the sources are not. Rather than > duplicate the name and URL of each source for each article, I would create a > second XML file for the sources, assign a unique ID to each source and then > reference that ID in my articles XML file. Then, on the JSP page itself, I > would import both XML files and then just use some kind of XPath expression > in the forEach statement to compare the IDs. Well, this doesn't work, at > least the way I did it. It just gives me an error. > > I'm sure my code has many problems, but I think the two main ones are: can > you even import two separate XML files with JSTL; and secondly, my XPath > expression is probably wrong. Anyway if anyone has any clues, I'd surely > appreciate it. > > > Below is my sample code: > > news.xml > > <allNewsArticles> > <eachNewsArticle> > <articleDate>October 31, 2003</articleDate> > <articleTitle>More quality along the supply chain</articleTitle> > > <articleUrl>http://english.lz-net.de/news/webtechnews/pages/showmsg.prl?id=3 > 097</articleUrl> > <sourceID>lz</sourceID> > </eachNewsArticle> > </allNewsArticles> > > #### > > newsSources.xml > > <allNewsSources> > <eachNewsSource> > <sourceID>am</sourceID> > <sourceTitle>Apparel Magazine</sourceTitle> > <sourceUrl>http://www.apparelmag.com/</sourceUrl> > </eachNewsSource> > </allNewsSources> > > > #### > > articles.jsp > > <c:import var="news_xml" url="news.xml" /> > <c:import var="newsSources_xml" url="newsSources.xml" /> > <x:parse var="news" xml="${news_xml}" /> > <x:parse var="newsSources" xml="${newsSources_xml}" /> > > --snip-- > > <x:forEach select="$news//eachNewsArticle"> > <tr> > <td> > <x:out select="articleDate" /> > </td> > <x:forEach select="$newsSources//eachNewsSource[sourceID = > '$news//eachNewsArticle/sourceID']"> > <td> > <a href="<x:out select='sourceUrl' />"><x:out > select="sourceTitle" /></a> > </td> > </x:forEach> > <td> > <a href="<x:out select='articleUrl' />"><x:out > select="articleTitle" > /></a> > </td> > </tr> > </x:forEach> > > > > Dylan MacDonald > Senior Web Designer > GNX > phone: 415-283-3715 > <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
