intelligent e-Services » Common

7 rules to work with highest performance in SQLite databases in Adobe AIR/Flex

martin — Tue, 08 Jun 2010 12:18:09 +0000

This article shows 7 rules how to get out the most of your SQLite application in AIR:

Create VO’s (value objects or classes) for each query extending a VO with contains at least the “ROWID”
Always use SQLStatement.itemClass and to query for an object – it automatically casts the
Use the “AS” alias in your SQL queries (e.g. SELECT count(name) AS “numberOfNames”) to fit it to your value object.
Use SQLConnection.columnNameStyle = SQLColumnNameStyle.SHORT as possible.
Try to avoid the same name in different tables (which has to be joined at one point)
Use SQL transactions: Start with sqlConnection.begin(); continue with “INSERT INTO (‘firstName’) VALUES (‘:firstName’) and SQLStatement.parameters[':firstName'] = VOList[numberOfVO][firstName]; and end with SQLConnection.commit();
If you want to get the current database Schema (‘SELECT * FROM sqlite_master WHERE type = “table”‘) open the database in read mode SQLConnection(_sqlFile, SQLMode.READ), load the Schema sqlConnection.loadSchema() and push SQLConnection.getSchemaResult() into an Array

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NativeMenu and CMD-Backspace #AS3

martin — Thu, 03 Jun 2010 11:51:30 +0000

If you are using var the NativeMenu on Mac and don’t know how to assign the backspace key, then you are here completely right.

This is how it works:

You just to set keyEquivalent = ‘\b’ (On German Keyboard: Alt Gr – Shift – 7)

Example:

menuItem:NativeMenuItem = nativeMenu.addItem(new NativeMenuItem(“MyMenuItem”));

menuItem.keyEquivalentModifiers = [Keyboard.COMMAND];

menuItem.keyEquivalent = ‘\b’;

menuItem.enabled = false;

menuItem.addEventListener(Event.SELECT, eventHandler);

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Firefox Plugin: SqliteManager as Standalone app!

martin — Wed, 02 Jun 2010 16:48:26 +0000

Do you also like Firefox and it’s powerful addons?

Are you also working with the powerful SQLiteManager (by Tarakant Tripathy, Mrinal Kant) addons?

But sometimes your Firefox is crashing – or you have just too many tabs – or it just takes forever to open up that thing?

So, before about half a year I figured out how you can run this plugin without the Firefox at all!

Like a real application!

How it works?

You need the XULRunner (an environment which can bootstrap XUL+XPCOM applications)
You need the searched plugin as XULRunner application (SQLiteManager)

So check out:

http://code.google.com/p/sqlite-manager/wiki/XulrunnerApplication

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The Stand-sit-dynamic effect saves money

martin — Sat, 29 May 2010 18:28:51 +0000

17 employees participate in a survey over five year to work additionally with a high desk to increase the time of standing during the work and also to decrease the time of sitting, as the bad habit while writing. Through that period the health status and health behavior was observed.

The question on this study was:

whether the stand-sit-dynamics is lived permanently
if the satisfaction and welfare of employees will improve

The result was:

up to 60% of those polled where satisfied to work on a standing desk
3% increased their productivity on a high level
the overall job satisfaction got over 60%, for about 5% and substantiall

(Source: http://translate.google.de/translate?js=y&prev=_t&hl=de&ie=UTF-8&layout=1&eotf=1&u=http%3A%2F%2Fwww.officeplus.de%2Fergonomiewissen%2Flangzeitstudie%2F&sl=de&tl=en)

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