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the new Django plugin for SQLEditor is now available.

It allows you to import, edit and export Django model classes with SQLEditor.

Django Plugin Page

There are some limitations still, in particular it doesn’t support all of the SQLEditor object types and there are some limitations with foreign key support, but the basics should work pretty nicely.

The Django plugin is also now built using the new SDK, which is getting closer to public release.

I’m really interested in knowing what people think of this, so a feedback on this is particularly welcome.

1.6 is something that I’ve been working on now for a long time, it is essentially (the unreleased) version 1.5 with improvements and updates. In particular it contains a SQL parser that was written using ANTLR and a new JNI based system for using JDBC drivers with support for Java 6 JDBC drivers.

It’s also the first release version of SQLEditor that is compatible with Snow Leopard. SQLEditor 1.4.7 and earlier had an unusual architecture. When I originally started writing SQLEditor, it was a Java application with a Swing user interface. After some development it seemed clear that java swing was proving limited in some ways. I rewrote the user interface layer in Cocoa, leaving the model layer in Java and using Cocoa Java to connect the two parts together. The application development continued and new versions were released. Eventually though, Apple decided that Cocoa Java was not the future and decided to deprecate it.

Work began immediately on rewriting the crucial components of SQLEditor, although there were some issues.

The first was the model code. Every object in an SQLEditor document is represented by an object and all of the code for these objects was written in Java. All of the object code was rewritten and tested against the earlier versions to check that it still worked. It was very important that files from previous versions continued to work (and as far as I know all of them so far do). New code was written to read and write the SQLEditor document xml format.

The second major issue was that the database interface used JDBC drivers, which are written in Java. Native code would use ODBC drivers. Although similar this might mean that users wouldn’t be able to use existing arrangements to access databases.

Eventually code was written to bridge between SQLEditor native code and the JDBC drivers using the Java Native Interface (JNI).

The other crucial problem was the SQL parser. This is used if you paste SQL code into SQLEditor or if you import a file. The SQL parser was written using JavaCC, a parser generator that is written in and produces Java code. Several parser generators were looked at to replace JavaCC and eventually ANTLR was chosen.

A new SQL parser was written and tested during 2009 in ANTLR and is included in SQLEditor 1.6. The new parser is completely rewritten compared to the one that existed in SQLEditor 1.4.7 and no code is shared between them.

A major step in developing the new parser was to port all of the SQL test cases from Java (in 1.4.7) to objective C (in 1.6). These automated unit tests are run against the parser to ensure that the new parser behaves correctly compared to both the 1.4.7 parser and the assorted SQL standards.

It is still something of a work in progress though, there are things it doesn’t support and it’s still being actively worked on. One particular thing that makes this somewhat harder than it might otherwise be is that it must accept SQL in several different dialects, not just a single standard.

SQLEditor 1.6 also included user interface improvements and various performance fixes.

Overall it’s an improved program, although I do wish that it had been released sooner.

Thanks to everyone using SQLEditor for your patience and also for trying the beta versions.

SQLEditor 1.6 is required for Mac OS X 10.6 Snow Leopard support, but because major sections needed rewriting to get this compatibility, there are also improvements to the core of the application.

There is a brand new SQL parser which is based on ANTLR and a new, more extendible, export system. Plus there are lots of other improvements in both user interface and functionality.

Best of all, it’s going to be a free upgrade for existing SQLEditor customers.

The beta is currently at version 1.6b7 but 1.6b8 will probably be out very soon.

I hope that you like it.

Download
SQLEditor 1.6b7
(DMG file | 4.2MB)

Unfortunately there were a couple of bugs that slipped through relating to clicking objects.

These are going to be fixed in a point release that should appear soon.

The new version is available from the automatic update system or download here:

Download

3.9MB dmg File Change Log Product Notes Expires 21st January 2009

There are some things that may need to be improved, but I’m fairly happy with the first revision of this.

Diagram showing compound foreign key

The compound foreign key object is a new table level object that you can add from the Object menu just like a field or index. Then you drag from the foreign key to the target table. Finally you use the inspector to create pairs of columns to link together.

When importing from a database SQLEditor will try to create field-to-field links on foreign keys with only 1 pair of columns unless you tell it otherwise. (There is a new preference to do this)

Support is fairly complete, SQL parsing, database import, database export and SQL export are all available so it should work fairly well. I think the only thing it doesn’t do is auto-create indexes, so you may need to do this by hand on referenced columns (for those databases that need this)

There is naturally a new inspector palette to go with the table object.

Compound foreign key inspector

This allows you to add pairs of columns using the + button at the bottom. Choose your columns using the little popup menus.

The whole thing is completely new, so please send in your thoughts to the usual address.

Download SQLEditor 1.4.4b1

(or enable the “Check for beta versions” preference and then use the check for updates feature)

I’d like to say thank you to everyone who helped make 2008 a great year.

Thank you to all of our customers for supporting development by buying SQLEditor, for sending in helpful comments (and bug reports) and for general encouragement.

Thank you also to everyone who has helped with development of SQLEditor, the program wouldn’t be what it is without you!

2009 should bring improvements and enhancements (and a shorter requested features list), plus I’m looking forward to being able to show you what I’ve been working on in the secret development versions.

Thank you all and best wishes for 2009,

Angus

PS: The beautiful christmas tree above is from Icon Drawer

1.4.3b3 (snappy numbering, yes?) is pretty much a bug fix release. I think that the index creation problems that were happening have now been fixed, plus better handling of when to create indexes. It should now correctly figure out if fields are indexed and shouldn’t now add duplicates (or worse attempt to add duplicates)

There is also the addition of the simulate mode for database export. This isn’t exactly new, because it’s been available in some development builds, but it has now appeared in a release version. Simulate mode runs the entire export as normal, except that instructions that alter the database aren’t actually sent to the database to be executed. The instructions are recorded though, so you can see what would have happened in the status window log view.

There is also a new feature which prevents fields and indexes being dropped (although it doesn’t prevent modification, use simulate if that’s what you want)

SQLEditor also now adds a line in the status window when an export fails complete with the instructions that were actually executed and the error that occurred. This information was always in the log, but it should be easier to see how SQLEditor has gone wrong (in the event that it does of course)

Finally some fixes for a few (hopefully unlikely) crashing bugs.

Download

3.6MB dmg File

Change Log
Product Notes
Expires
21st January 2009

This second poll shows, again, that most people (89%) are using 4.1 or later.

The thread at the PunBB forum gives 95% of people polled using 4.1 or later.

The Mambo forum poll from 2006 gives 80% using versions after 4.1 (with 8.5% don’t know or other)

Admittedly not scientific surveys (self selection, etc) but somewhat convincing.

This has an obvious implication on how to handle MySQL support, in particular special casing to work around particular issues in early versions. This code adds complexity and in some unfortunate cases also bugs. The less there is, the better.

The new beta is 1.4.3b1 which was released 14th November. It fixes a number of bugs, including MySQL comments and some odd bugs relating to selecting tables using the drag selection method.

Download 1.4.3b1 (3.6MB DMG)

The current stable version is 1.4.2 which came out at the end of October. It fixed several significant bugs that people reported and made a few minor improvements.

Download 1.4.2 (3.6MB DMG)