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Posted to users@cocoon.apache.org by Miguel Carvalho <mi...@mail.telepac.pt> on 2003/08/12 13:24:37 UTC
problem accessing attribute in xsl with cocoon
HI, i'm having a little trouble in putting a transformer in xsl to work with
cocoon.
The thing is, after i apply a java trasformer made by me i get the following
result in the "view source" of IE
<!-- XML FRAGMENT -->
<document>
<contents>
<article layouttype="2" xpos="5" ypos="7" border="dotted">
<title>Titulo com rating 2</title>
<text>Texto</text>
</article>
<article layouttype="3" xpos="5" ypos="7" border="dotted">
<title>Titulo do artigo com rating igual a 1</title>
<text>texto do artigo com rating igual a 1</text>
<image>img1.jpg</image>
</article>
<article layouttype="4" xpos="5" ypos="7" border="dotted">
<title>Titulo do artigo com rating igual a 2</title>
<text>texto do artigo com rating igual a 2</text>
<image>img1.jpg</image>
</article>
<article layouttype="2" xpos="5" ypos="7" border="dotted">
<title>Titulo do artigo com rating igual a 2</title>
<text>texto do artigo com rating igual a 2</text>
<image>img1.jpg</image>
</article>
</contents>
</document>
and this is good.
After this i want to apply another generator in xsl,
<!-- XLS STYLESHEET daeTransformer2html.xsl -->
<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output type="xml"/>
<xsl:template match="/">
<xsl:apply-templates />
</xsl:template>
<xsl:template match="contents">
<HTML>
<HEAD>
</HEAD>
<BODY>
<xsl:apply-templates select="article[@layouttype='2']"/>
</BODY>
</HTML>
</xsl:template>
<xsl:template match="article">
article
<xsl:value-of select="title"/>
<xsl:value-of select="text"/>
<img>
<xsl:attribute name="src">
<xsl:value-of select="image"/>
</xsl:attribute>
</img>
</xsl:template>
</xsl:stylesheet>
The sitemap defined is as follows
<!-- SITEMAP -->
<map:match pattern="daestart">
<map:generate type="serverpages" src="daexsps/start.xsp"/>
<map:transform src="daestyles/removens.xsl"/>
<map:transform type="dae"/>
<map:transform src="daestyles/daeTransformer2html.xsl"/>
<map:serialize type="html"/>
</map:match>
and the answer sent to the browser is
<!-- RESPONSE SENT TO BROWSER -->
<HTML>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
</HEAD>
<BODY></BODY>
</HTML>
wich is not right.
I tried to copy the first XML Fragment and put it in a file with the name
daexmltest.xml and apply the XSL referenced earlier (pipeline bellow)
<!-- PIPELINE -->
<map:match pattern="daetest">
<map:generate src="daexmltest.xml"/>
<map:transform src="daestyles/daeTransformer2html.xsl"/>
<map:serialize type="html"/>
</map:match>
and the response to the browser was
<HTML>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
</HEAD>
<BODY>
article
Titulo com rating 2Texto<img src="">
article
Titulo do artigo com rating igual a 2texto do artigo com rating
igual a 2<img src="img1.jpg"></BODY>
</HTML>
and this is rigth, because it accesses the attribute @layouttype and returns
only the <article> tags that has @layouttype=2
If you have any ideas , of how to handle this ...
Thanks in advance
Miguel Carvalho
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Re: cocoon sax events and transformer doubts
Posted by Bruno Dumon <br...@outerthought.org>.
On Tue, 2003-08-12 at 17:04, Bruno Dumon wrote:
> On Tue, 2003-08-12 at 17:02, Miguel Carvalho wrote:
> <snip/>
> > newAttr.addAttribute("", localName, "layouttype", "", "2");
> > newAttr.addAttribute("", localName, "xpos", "", "5");
> > newAttr.addAttribute("", localName, "ypos", "", "7");
> > newAttr.addAttribute("", localName, "border", "", "dotted");
>
> This is likely the problem: the localName should also be the attribute
> name, so in fact you need to supply the same string twice:
>
> newAttr.addAttribute("", "layouttype", "layouttype", "", "2");
oops, looked over another problem: the 4th argument should be "CDATA":
newAttr.addAttribute("", "layouttype", "layouttype", "CDATA", "2");
--
Bruno Dumon http://outerthought.org/
Outerthought - Open Source, Java & XML Competence Support Center
bruno@outerthought.org bruno@apache.org
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RE: cocoon sax events and transformer doubts
Posted by Miguel Carvalho <mi...@mail.telepac.pt>.
Thanks... Right on the spot... :)
Miguel Carvalho
-----Original Message-----
From: Bruno Dumon [mailto:bruno@outerthought.org]
Sent: terça-feira, 12 de Agosto de 2003 16:04
To: users@cocoon.apache.org
Subject: Re: cocoon sax events and transformer doubts
On Tue, 2003-08-12 at 17:02, Miguel Carvalho wrote:
<snip/>
> newAttr.addAttribute("", localName, "layouttype", "",
"2");
> newAttr.addAttribute("", localName, "xpos", "", "5");
> newAttr.addAttribute("", localName, "ypos", "", "7");
> newAttr.addAttribute("", localName, "border", "",
"dotted");
This is likely the problem: the localName should also be the attribute
name, so in fact you need to supply the same string twice:
newAttr.addAttribute("", "layouttype", "layouttype", "", "2");
In this case the two arguments are the same because you're using an
empty namespace. Otherwise, the second argument would contain the
namespace prefix.
--
Bruno Dumon http://outerthought.org/
Outerthought - Open Source, Java & XML Competence Support Center
bruno@outerthought.org bruno@apache.org
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Re: cocoon sax events and transformer doubts
Posted by Bruno Dumon <br...@outerthought.org>.
On Tue, 2003-08-12 at 17:02, Miguel Carvalho wrote:
<snip/>
> newAttr.addAttribute("", localName, "layouttype", "", "2");
> newAttr.addAttribute("", localName, "xpos", "", "5");
> newAttr.addAttribute("", localName, "ypos", "", "7");
> newAttr.addAttribute("", localName, "border", "", "dotted");
This is likely the problem: the localName should also be the attribute
name, so in fact you need to supply the same string twice:
newAttr.addAttribute("", "layouttype", "layouttype", "", "2");
In this case the two arguments are the same because you're using an
empty namespace. Otherwise, the second argument would contain the
namespace prefix.
--
Bruno Dumon http://outerthought.org/
Outerthought - Open Source, Java & XML Competence Support Center
bruno@outerthought.org bruno@apache.org
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cocoon sax events and transformer doubts
Posted by Miguel Carvalho <mi...@mail.telepac.pt>.
Hi, i'm having some doubts about the way the sax events are created in a
transformer in java...
I'm asking this question because i wrote a transformer in java, but i want
to apply another transformer in xsl after that and i can't access the
attributes in the nodes...
this is the code of the transformer i wrote..
package pt.laseeb.dae.transformer;
/*
* File: daeTransformer.java
*
* Project: Design Automatico e Evolutivo
*
* Authors: Paulo Sérgio Silva Paixao - pssp@mega.ist.utl.pt
* Miguel Angelo Rodrigues Carvalho - marc@mega.ist.utl.pt
*
* Date: 4/Ago/2003
*
* Trabalho de Fim de Curso - Design Automático e Evolutivo
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
import org.apache.cocoon.transformation.AbstractTransformer;
import org.apache.cocoon.environment.SourceResolver;
import org.apache.cocoon.ProcessingException;
import org.apache.avalon.framework.parameters.Parameters;
import org.xml.sax.SAXException;
import org.xml.sax.Attributes;
import org.xml.sax.helpers.AttributesImpl;
import java.util.Map;
import java.io.IOException;
public class daeTransformer extends AbstractTransformer
{
public static final String DOCUMENT_ELEMENT = "document";
public static final String CONTENT_ELEMENT = "contents";
public static final String ARTICLE_ELEMENT = "article";
public static final String ARTICLE_TITLE_ELEMENT = "title";
public static final String ARTICLE_TEXT_ELEMENT = "text";
public static final String ARTICLE_IMAGE_ELEMENT = "image";
protected static final int MODE_NONE = 0;
protected static final int MODE_ARTICLE = 1;
protected static final int MODE_TITLE = 2;
protected static final int MODE_TEXT = 3;
protected static final int MODE_IMAGE = 4;
protected int mode;
protected StringBuffer articleText;
protected StringBuffer articleTitle;
protected StringBuffer articleImage;
protected Attributes attr;
public void setup(SourceResolver resolver, Map objectModel, String src,
Parameters par)
throws ProcessingException, SAXException, IOException
{
this.mode = MODE_NONE;
this.articleImage = new StringBuffer();
this.articleTitle = new StringBuffer();
this.articleText = new StringBuffer();
}
public void startElement(String namespaceURI, String localName, String
qName,
Attributes attributes) throws SAXException
{
AttributesImpl newAttr = new AttributesImpl();
if (localName.equals(DOCUMENT_ELEMENT) == true)
{
super.startElement("", localName , qName, newAttr);
}
else if (localName.equals(CONTENT_ELEMENT) == true)
{
super.startElement("", localName , qName, newAttr);
}
else if (localName.equals(ARTICLE_ELEMENT) == true)
{
newAttr.addAttribute("", localName, "layouttype", "", "2");
newAttr.addAttribute("", localName, "xpos", "", "5");
newAttr.addAttribute("", localName, "ypos", "", "7");
newAttr.addAttribute("", localName, "border", "", "dotted");
super.startElement("", localName, qName, newAttr);
}
else if (localName.equals(ARTICLE_TITLE_ELEMENT) == true)
{
this.mode = MODE_TITLE;
super.startElement("", localName, qName, newAttr);
}
else if (localName.equals(ARTICLE_TEXT_ELEMENT) == true)
{
this.mode = MODE_TEXT;
super.startElement("", localName, qName, attributes);
}
else if (localName.equals(ARTICLE_IMAGE_ELEMENT) == true)
{
this.mode = MODE_IMAGE;
super.startElement("", localName, qName, attributes);
}
else
{
throw new SAXException("Unknown start element " +
localName);
}
}
public void characters(char[] buffer, int start, int length)
throws SAXException
{
switch (this.mode)
{
case MODE_NONE : super.characters(buffer, start, length);
break;
case MODE_TITLE : this.articleTitle.append(buffer, start,
length);
break;
case MODE_TEXT : this.articleText.append(buffer, start, length);
break;
case MODE_IMAGE : this.articleImage.append(buffer, start,
length);
break;
}
}
public void endElement(String namespaceURI, String localName, String
qName)
throws SAXException {
if (localName.equals(DOCUMENT_ELEMENT) == true)
{
super.endElement("", localName , qName);
}
else if (localName.equals(CONTENT_ELEMENT) == true)
{
super.endElement("", localName, qName);
}
else if (localName.equals(ARTICLE_ELEMENT) == true)
{
super.endElement("", localName, qName);
} else if (localName.equals(ARTICLE_TITLE_ELEMENT) == true)
{
// mailto received
super.characters(this.articleTitle.toString().toCharArray(),
0, this.articleTitle.length());
this.articleTitle = null;
this.articleTitle = new StringBuffer();
super.endElement("", localName, qName);
this.mode = MODE_NONE;
} else if (localName.equals(ARTICLE_TEXT_ELEMENT) == true)
{
super.characters(this.articleText.toString().toCharArray(),
0, this.articleText.length());
this.articleText = null;
this.articleText = new StringBuffer();
super.endElement("", localName, qName);
this.mode = MODE_NONE;
} else if (localName.equals(ARTICLE_IMAGE_ELEMENT) == true)
{
super.characters(this.articleImage.toString().toCharArray(),
0, this.articleImage.length());
this.articleImage = null;
this.articleImage = new StringBuffer();
super.endElement("", localName, qName);
this.mode = MODE_NONE;
} else
{
throw new SAXException("Unknown end element " + localName);
}
}
}
and the result of this transformer is something like ...
<document>
<contents>
<article layouttype="2" xpos="5" ypos="7" border="dotted">
<title>Titulo com rating 2</title>
<text>Texto</text>
</article>
<article layouttype="2" xpos="5" ypos="7" border="dotted">
<title>Titulo do artigo com rating igual a 1</title>
<text>texto do artigo com rating igual a 1</text>
<image>img1.jpg</image>
</article>
<article layouttype="2" xpos="5" ypos="7" border="dotted">
<title>Titulo do artigo com rating igual a 2</title>
<text>texto do artigo com rating igual a 2</text>
<image>img1.jpg</image>
</article>
<article layouttype="2" xpos="5" ypos="7" border="dotted">
<title>Titulo do artigo com rating igual a 2</title>
<text>texto do artigo com rating igual a 2</text>
<image>img1.jpg</image>
</article>
</contents>
</document>
and after that i would like to apply a xsl stylesheet that can access some
of the properties available in the nodes, this is the code of the xsl
<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output type="html"/>
<xsl:template match="/">
<xsl:apply-templates select="*"/>
</xsl:template>
<xsl:template match="contents">
contents
<HTML>
<HEAD>
</HEAD>
<BODY>
<xsl:apply-templates select="article[@layouttype='2']"/>
</BODY>
</HTML>
</xsl:template>
<xsl:template match="border">
border
</xsl:template>
<xsl:template match="article">
article
<xsl:value-of select="title"/>
<xsl:value-of select="text"/>
<img>
<xsl:attribute name="src">
<xsl:value-of select="image"/>
</xsl:attribute>
</img>
</xsl:template>
</xsl:stylesheet>
but i can't access the attributes of the nodes...
If anyone has some ideas of why this might be hapenning it would be a very
good help..
thanks in advance
Miguel Carvalho
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