Hi Oleg,

I don't think that you can call this a 'bug in Cocoon'! Do you really mean a Cocoon 2.0 version or just generally version 2 of Cocoon?

It seems you are building a generic DB query tool so I suppose the following is not appropriate but I would argue that this is not the desired way to use the SQLTransformer since the overall Application design should prevent any constraints ever being violated. In my view, such Constraints are fundamental rules that are there to define the parameters of the system and not just as a last line of defence or for the creation of indexes. However,  to handle such Processing Exceptions in Cocoon you should take a look at :-

http://cocoon.apache.org/2.1/userdocs/concepts/errorhandling.html

if, of course, you are using Cocoon 2.1.

Hope this helps

Warrell
Warrell Harries | IT Services, West Sussex County Council | Location: Northleigh House
Office: +44 (0) 1243-756837
| Email: [EMAIL PROTECTED]




Oleg Konovalov <[EMAIL PROTECTED]>

27/03/2006 14:26

Please respond to
users@cocoon.apache.org

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Subject
Handling SQL Transformer exceptions





Hi,

I am trying to fix the bug in the Cocoon 2.0 application:
- it is not handling exceptions from SQLTransformer in the GUI,
need to show user an error that Insert failed.

Here is an exception we often get:
ERROR   (2006-03-24) 15:29.31:855   [sitemap.transformer.sql] (/myapp) Thread-11/SQLTransformer$Query: Caught a SQLException
java.sql.SQLException: ORA-00001: unique constraint (MBRDEV.UKC_ASSOC_COT) violated
   at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)

Here is a simplified version of my XSL:
<xsl:template match="/">
   <page>
       <title><xsl:value-of select='$table'/><xsl:text> modification</xsl:text></title>
       <content>
           <xsl:apply-templates/>
       </content>
   </page>
</xsl:template>

<xsl:template name='doInsert'>
   <xsl:param name='row'/>
   <xsl:param name='table'/>
   
   <sql:execute-query>
       <sql:query>
           <xsl:text>insert into </xsl:text>
           <xsl:value-of select='$table'/>
           .........
       </sql:query>
   </sql:execute-query>
   
   <!-- This is the code I added to handle that exception which is supposed to show it to the user -->
   <xsl:if test="count(//sql:error[1]) > 0">  
       <xsl:call-template name='buildErrorMessage'>
           <xsl:with-param name='row' select='.'/>
           <xsl:with-param name='message'><xsl:text>ERROR: Can not insert the row into the database (not recorded)</xsl:text></xsl:with-param>
       </xsl:call-template>            
   </xsl:if>
   
</xsl:template>
....

Am I doing it right and in correct place ("This is the code...") ?

For some reason it doesn't seem to work (maybe that condition is false: "count(//sql:error[1]) > 0"  ?)


Sorry for the newbie question. Any help is very appreciated.


Thank you in advance,
Oleg.




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