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https://issues.apache.org/jira/browse/DERBY-6645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16726811#comment-16726811
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Rick Hillegas commented on DERBY-6645:
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1) messages.xml contains the source for the English engine and client messages.
It is pre-processed by MessageBuilder (as described in my previous comment).
MessageBuilder writes the English messages (engine and client) into
trunk/generated/java/org.apache.derby.engine/org/apache/derby/loc/messages_en.properties.
The source for the non-English engine and client messages lives in
locale-specific message files in the source tree of the engine module (in the
trunk/java/org.apache.derby.engine/org/apache/derby/loc/messages_$locale.properties
files). The splitmessages program processes
trunk/generated/java/org.apache.derby.engine/org/apache/derby/loc/messages_en.properties
and
trunk/java/org.apache.derby.engine/org/apache/derby/loc/messages_*.properties,
separating out the client messages into their own properties files and
splitting the engine messages into smaller chunks as described in my previous
comment. This happens both for the English and the non-English messages.
2) English and non-English source for the tools messages live in the source
tree for the tools module, in
trunk/java/org.apache.derby.tools/org/apache/derby/loc. The English messages
are simply copied into the classes directory of the tools module. The
non-English messages are copied into the locale-specific directory trees by the
build script for the tools module (trunk/java/org.apache.derby.tools/build.xml).
3) The source for the server messages lives in locale-specific properties files
in trunk/java/org.apache.derby.server/org/apache/derby/loc/drda, that is, in
the source tree for the server module. These files are copied into the classes
tree for the server module.
> Switch to Maven for building Apache Derby
> -----------------------------------------
>
> Key: DERBY-6645
> URL: https://issues.apache.org/jira/browse/DERBY-6645
> Project: Derby
> Issue Type: Improvement
> Components: Build tools
> Affects Versions: 10.10.2.0
> Reporter: Moritz Hoffmann
> Priority: Major
> Attachments: DERBY-6645_v1.patch
>
>
> For a new user building Derby is very hard. It does not follow established
> Java project structures and requires a lot of prior knowledge. Also the
> documentation is rather short. Especially running the tests is non-intuitive
> at the beginning. Thus, I propose that Derby switches to building using Maven
> and restructures its components in a cleaner way. Testing should be revised
> to produce reproducible results. This would make development and testing much
> easier and more user-friendly.
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