[opencms-dev] New API and CmsExceptions in Version 6.x..?

[Achim Westermann]

Hi Chris,

in OpenCms 6.0 CmsException has been localized. It only accept some 
CmsMesageContainer instance. You could try to throw a normal java 
exception if the integration allows.
Or you could get a message container:

1 Create a messages.properties file within your package.

2 Copy one of the various Messages.java to your package.

3 Delete all the constants for Messages and define your message key like 
the ones you deleted.

4 Change the bundle name constant to <your package>/messages.

5 Create an entry in your messages.properties matching the constant 
value you defined and the value "Cannot create XSLT transformer.".

6 Do steps 3,5 for the 2nd exception.

7 In the code where you throw the CmsException write:

throw new CmsException(Messages.get().container(Messages.<constantName>, 
<Message argument>, <Message argument>,...));
where Message argument are the arguments that match the values to fill 
in your messages.properties values "{0}", "{1}",...
In your case there are no message arguments to implant to the exception 
messages.

Search the OpenCms codebase for the points where exceptions are thrown.

happy coding,

Achim

Chris Stephens wrote:
> Hi folks,
> 
> I am trying to port some of Matt Butcher's code from "Building  Websites 
> with OpenCms" (which was written for Version 5.x) to Version  6.0 code.
> 
> A lot of the API has changed and I have managed to get that all fine  
> (as far as I can tell) but the code has problems with CmsExceptions.
> 
> Specifically, I get this when I compile:
> 
> CmsXslTransformer.java:59: cannot resolve symbol
> symbol : constructor CmsException  
> (java.lang.String,javax.xml.transform.TransformerConfigurationException)
> location: class org.OpenCms.main.CmsException
> throw new CmsException( "Cannot create XSLT transformer.", tce );
> ^
> CmsXslTransformer.java:61: cannot resolve symbol
> symbol : constructor CmsException  
> (java.lang.String,javax.xml.transform.TransformerException)
> location: class org.OpenCms.main.CmsException
> throw new CmsException( "Cannot use XSLT transformer.", te );
> ^
> 2 errors
> 
> 
> The relvant bits of code are as follows:
> 
> import org.OpenCms.main.CmsException;
> 
> and
> 
>    public CmsXslTransformer( String xsltStylesheet, CmsObject cms )
>          throws CmsException {
>       this.cms = cms;
>       try {
>          TransformerFactory tf = TransformerFactory.newInstance();
>          CmsFile xsltFile = cms.readFile( xsltStylesheet );
>          Source s = this.getCmsFileSource( xsltFile );
>          this.transformer = tf.newTransformer( s );
>       } catch ( TransformerConfigurationException tce ) {
>          throw new CmsException( "Cannot create XSLT transformer.",  tce );
>       } catch ( TransformerException te ) {
>          throw new CmsException( "Cannot use XSLT transformer.", te );
>       }
>    }
> 
> 
> Can anyone help me? I've tried to glean how exceptions are done in  6.0 
> from the Javadoc but it's not coming clear to me yet...
> 
> Thanks in advance,
> 
> Chris
> PS the book is fantastic even though it's a version old. I hope Matt  
> does a new version for 6 - I will buy it immediately when he does...  
> Thanks, Matt!
> 
> 
> _______________________________________________
> This mail is send to you from the opencms-dev mailing list
> To change your list options, or to unsubscribe from the list, please visit
> http://mail.opencms.org/mailman/listinfo/opencms-dev
> 
> 


-- 
---------------------------------
Achim Westermann
Martinsfeld 32
50676 Köln
Telefon: +49(0)221/7886546
Mobil:   +49(0)179/7627762
E-mail:   Achim.Westermann at gmx.de