cocoon-docs mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From stev...@outerthought.org
Subject [WIKI-UPDATE] XPatchTaskUsage XMLFormsStruts Wed Sep 3 12:00:03 2003
Date Wed, 03 Sep 2003 10:00:03 GMT
Page: http://wiki.cocoondev.org/Wiki.jsp?page=XPatchTaskUsage , version: 8 on Wed Sep  3 09:23:42
2003 by StevenNoels

- |{{xpath}}|An xpath expression that specifies the context node for the patch insertion.
 __This must return exactly one node.__|
?                                                                                        
                                    ^

+ |{{xpath}}|An xpath expression that specifies the context node for the patch insertion.
 __This must return exactly one node __ and is required even when using {{insert-after}}.|
?                                                                                        
                                    ^  ++++++++++++++++++++++++++++++++++++++++++++++++++

- |{{insert-before}}|(optional) An xpath expression that specifies where in the document the
patch will be placed.  If neither this nor {{insert-after}} are specified, the node will be
the last child node of the context specified in the {{xpath}} attribute.|
+ |{{insert-before}}|(optional) An xpath expression that specifies where in the document the
patch will be placed.  by default, the expression is evaluated relative to the node specified
by the {{xpath}} attribute. If neither this nor {{insert-after}} are specified, the node will
be the last child node of the context specified in the {{xpath}} attribute.|
?                                                                                        
                         +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

+ ----
+ !Example
+ Here's an example inserting the {{load-class}} directive ({{web.xml}}) for a database driver
in case it doesn't exist already. There's a catch with the {{web.xml}} structure - you have
to be rather precise where you insert another {{init-param}} element, since other elements
can appear on the same level, and the order is important.
+ 
+ {{{<xweb unless="/web-app/servlet/init-param[contains(param-value,'org.gjt.mm.mysql.Driver')]"
+       xpath="/web-app/servlet"
+       insert-after="init-param[position()=last()]">
+   <init-param>
+   	<param-name>load-class</param-name>
+   	<param-value>
+    	  org.gjt.mm.mysql.Driver
+     </param-value>
+   </init-param>
+ </xweb>}}}
+ 
+ The {{unless}} attribute checks whether there exists an {{init-param}} already referring
to the mysql jdbc driver class, the {{xpath}} attribute points to the context (root) node
where the {{init-param}} will be inserted, and the {{insert-after}} contains another XPath
expression selecting the last already existing {{init-param}}, after which the new one will
be inserted. - [SN|StevenNoels]
+ 


Page: http://wiki.cocoondev.org/Wiki.jsp?page=XMLFormsStruts , version: 5 on Wed Sep  3 09:47:52
2003 by 193.190.59.97

- Is this possible ?
- 



Mime
View raw message