Date: 2004-10-29T07:02:22
Editor: ViPi <ViPi@xxxxxxxx>
Wiki: Cocoon Wiki
Page: DirectoryGenerator
URL: http://wiki.apache.org/cocoon/DirectoryGenerator
no comment
Change Log:
------------------------------------------------------------------------------
@@ -19,43 +19,101 @@
This is how you have to define a !DirectoryGenerator (as defined in
sitemap.xmap of the cocoon webapp directory):
-{{{
- <map:generator label="content"
- logger="sitemap.generator.directory"
- name="directory"
- pool-grow="2" pool-max="16" pool-min="2"
- src="org.apache.cocoon.generation.DirectoryGenerator"/>
+{{{
+ <map:generator label="content"
+ logger="sitemap.generator.directory"
+ name="directory"
+ pool-grow="2" pool-max="16" pool-min="2"
+ src="org.apache.cocoon.generation.DirectoryGenerator"/>
}}}
=== Usage ===
Example of a simple usage of the !DirectoryGenerator:
-{{{
- <map:match pattern="directory-listing">
- <map:generate type="directory" src="../directory/to/list/">
- <map:parameter name="depth" value="2"/>
- </map:generate>
- <map:serialize type="xml"/>
- </map:match>
+{{{
+ <map:match pattern="directory-listing">
+ <map:generate type="directory" src="../directory/to/list/">
+ <map:parameter name="depth" value="2"/>
+ </map:generate>
+ <map:serialize type="xml"/>
+ </map:match>
}}}
=== Result ===
This is an example of what you can expect as result of the !DirectoryGenerator.
-{{{
- <dir:directory name="dir1" lastModified="1067545661156" date="30/10/03
21:27"
- size="0" sort="name" reverse="false" requested="true">
- <dir:directory name="dir11" lastModified="1067295952187"
- date="28/10/03 0:05" size="0"/>
- <dir:directory name="dir12" lastModified="1067295971203"
- date="28/10/03 0:06" size="0"/>
- <dir:directory name="dir13" lastModified="1067543010781"
- date="30/10/03 20:43" size="0"/>
- <dir:directory name="dir14" lastModified="1067545661156"
- date="30/10/03 21:27" size="0"/>
- <dir:file name="file.xml" lastModified="1067541801328"
- date="30/10/03 20:23" size="79"/>
- </dir:directory>
+{{{
+ <dir:directory name="dir1" lastModified="1067545661156" date="30/10/03
21:27"
+ size="0" sort="name" reverse="false" requested="true">
+ <dir:directory name="dir11" lastModified="1067295952187"
+ date="28/10/03 0:05" size="0"/>
+ <dir:directory name="dir12" lastModified="1067295971203"
+ date="28/10/03 0:06" size="0"/>
+ <dir:directory name="dir13" lastModified="1067543010781"
+ date="30/10/03 20:43" size="0"/>
+ <dir:directory name="dir14" lastModified="1067545661156"
+ date="30/10/03 21:27" size="0"/>
+ <dir:file name="file.xml" lastModified="1067541801328"
+ date="30/10/03 20:23" size="79"/>
+ </dir:directory>
}}}
+
+
+=== The Namespace ===
+
+As mentioned in the
[http://cocoon.apache.org/2.1/userdocs/generators/directory-generator.html user
documentation], !DirectoryGenerator will generate all elements with the
namespace '''http://apache.org/cocoon/directory/2.0''', so that the afore
mentioned example will read like:
+
+{{{
+ <dir:directory name="dir1" lastModified="1067545661156" date="30/10/03
21:27"
+ xmlns:dir="http://apache.org/cocoon/directory/2.0
+ size="0" sort="name" reverse="false" requested="true">
+ <dir:directory name="dir11" lastModified="1067295952187"
+ date="28/10/03 0:05" size="0"/>
+ <dir:directory name="dir12" lastModified="1067295971203"
+ date="28/10/03 0:06" size="0"/>
+ <dir:directory name="dir13" lastModified="1067543010781"
+ date="30/10/03 20:43" size="0"/>
+ <dir:directory name="dir14" lastModified="1067545661156"
+ date="30/10/03 21:27" size="0"/>
+ <dir:file name="file.xml" lastModified="1067541801328"
+ date="30/10/03 20:23" size="79"/>
+ </dir:directory>
+}}}
+
+Beginners, when converting this kind of output to HTML, sometimes are facing
problems on dealing with this namespace. Matching the elements is one of them
and removing that namespace from the resulting HTML documents is the other.
I've even seen some [http://cocoon.apache.org/link/livesites-2.1.html Cocoon
Live Sites] still bearing this namespace within HTML pages, even though
(non-X)HTML standards do not allow any namespace.
+
+The solution is quite easy. The
[http://cocoon.apache.org/2.1/userdocs/generators/directory-generator.html XSLT
Standard] says:
+ '''NOTE:''' When a stylesheet uses a namespace declaration only
for the purposes of addressing the source tree, specifying the prefix in the
exclude-result-prefixes attribute will avoid superfluous namespace declarations
in the result tree.
+
+As an example, the following stylesheet will transform !DirectoryGenerator's
output into an HTML unordered list with '''no''' such superfluous namespace:
+
+{{{
+<?xml version="1.0" encoding="UTF-8"?>
+<xsl:stylesheet version="1.0"
+ xmlns:dir="http://apache.org/cocoon/directory/2.0";
exclude-result-prefixes="dir"
+ xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
+
+<xsl:template match="dir:directory|dir:file">
+ <li>
+ <xsl:value-of select="@name"/>
+ <xsl:if test="name(.)='dir:directory'">
+ <!-- creating subdirectories -->
+ <ul><xsl:apply-templates/></ul>
+ </xsl:if>
+ </li>
+</xsl:template>
+
+<xsl:template match="/dir:directory">
+ <ul>
+ <xsl:value-of select="@name"/>
+ <!-- creating subdirectories -->
+ <xsl:apply-templates/>
+ </ul>
+</xsl:template>
+
+</xsl:stylesheet>
+}}}
+
+All you need to get rid of the namespace is in line 3.
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