Provide the framework to run the sql engine without a store - "storeless engine"

• Key: DERBY-2164
• Type: Improvement
• Status: Open
• Priority: Minor
• Assignee: Daniel John Debrunner
• Reporter: Daniel John Debrunner
• Component/s: Services, SQL

Description

Can be used of the base for other projects such as a standalone SQL syntax checker discussed here:

http://mail-archives.apache.org/mod_mbox/db-derby-user/200612.mbox/[e-mail]%3e

Comments

[Kristian Waagan]

Backed out revision 497615 (with r497644), as it broke the build.
Build error:
BUILD FAILED
/some-path/trunk/build.xml:347: Basedir /some-path/trunk/${derby.storeless.src.dir} does not exist

Total time: 1 minute 24 seconds

[Knut Anders Hatlen]

Added classes.storeless to svn:ignore and committed revision 497745.

[Knut Anders Hatlen]

When the storeless engine is loaded, it throws a NullPointerException because impl.services.reflect.UpdateLoader's constructor calls createCompatibilitySpace() on the lock factory, which is null. The rest of the code in UpdateLoader correctly handles the lack of a lock factory, so I just added a null check in the constructor to fix it. Fixed in revision 675918.