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http://issues.apache.org/jira/browse/DERBY-1868?page=comments#action_12446326 ] 
            
David Van Couvering commented on DERBY-1868:
--------------------------------------------

Hi, Rick, thanks for your work on this.  It's great that our poor doc people 
won't have to weed through new messages for each release.  

I do have some comments, perhaps to be fixed in subsequent revisions:

- In MessageBuilder.java PROPERTIES-BOILERPLATE and REF_GUIDE_NOTES - It seems 
odd to me that the generated files should have license headers.  I would think 
that the license header belongs in MessageBuilder.java and messages.xml, but 
not in the files it generates.

- In messages.xml, it would be good to tell a newbie how to add a new message - 
in particular, how they use and what happens with the <arg> element

- As it stands today, translators will have to translate two files: the 
messages_en.properties file and the documentation file that contains the 
messages.  Wouldn't it make more sense to translate the messages.xml file and 
the MessageBuilder should generate appropriate properties files and dita files 
for each language (although I don't know where translated documentation ends 
up). 

Thanks,

David

> Merge argument descriptors into SQLState strings so that SQLState 
> documentation can be generated by a program
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-1868
>                 URL: http://issues.apache.org/jira/browse/DERBY-1868
>             Project: Derby
>          Issue Type: Improvement
>          Components: Build tools
>    Affects Versions: 10.2.1.6
>            Reporter: Rick Hillegas
>         Assigned To: Rick Hillegas
>             Fix For: 10.2.2.0
>
>         Attachments: derby-1868-lineEndings-v01.diff, 
> derby-1868-merged-v01.diff, derby-1868-merged-v02.diff, messages.dtd, 
> messages.xml
>
>
> See DERBY-1566. That JIRA introduced a program, written by David, which 
> generates human-readable tables of message strings for inclusion in the 
> Reference Guide. The tool doesn't patch in friendly arguments. That leaves 
> the message strings peppered with unfriendly placeholders like {0}. {1}, 
> etc.. Laura painstakingly editted the tables, by hand substituting in 
> friendlier arguments like <userName> and <tableName>.
> We need to move Laura's substitutions into the source code so that David's 
> program can automatically plug them in. This will save us a lot of grief when 
> we generate future releases. Dan and Andrew have proposed approaches to this 
> problem. Those approaches are discussed in DERBY-1566. Here is Andrew's 
> comment on Dan's proposal:
> "While Dan's suggestion here:
> http://mail-archives.apache.org/mod_mbox/db-derby-dev/200608.mbox/[EMAIL 
> PROTECTED]
> to generate the message file and doc from a single XML file would be ideal, a 
> simpler approach to implement would be to maintain the meanings of the 
> markers in another properties file, identified by message key and marker 
> number. So, e.g. the new properties file would contain:
> 01500.0=<constraintName>
> 01500.1=<tableName>
> Then ErrorMessageGenerator could look up the value of the markers by SQLState 
> and MessageFormat marker number in the properties file, although this 
> approach would require maintaining two files instead of one."
> I glossed this further: "If we adopt Andrew's approach, I would recommend 
> co-locating the argument descriptiors in the same properties file which 
> contains the messages. This will help keep the argument descriptors from 
> drifting out of sync with the messages themselves--that is a substantial 
> advantage of Dan's approach."

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