stevko - Developer IT

how to clear Window DNS cache

- by Stevko

My router reset and my ip address changed. DynDNS was updated with the new address automatically. But windows still pings the old address. How do I clear the DNS cache in Windows Vista?

IE9 setup needs to update java/firefox/chrome?

I'm upgrading/bootstrapping a desktop with new everything Win7 64bit from Vista 32bit. I see that IE9 is newly released and start the install. IE9 Setup requires and offers to close these programs due to overlapping files used. Firefox Chrome Java(TM) Platform SE binary Java(TM) update scheduler Skype, Trillian, Winamp, etc. How safe is this? I fear getting yet another MS Firefox add-on or toolbar.

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Deeplinking using GWT History Token within a Facebook iFrame Canvas

- by Stevko

I would like to deep link directly to a GWT app page within a Facebook iFrame Canvas. The first part is simple using GWT's History token with URLs like: http://www.example.com/MyApp/#page1 which would open page1 within my app. Facebook Apps use an application url like: http://apps.facebook.com/myAppName which frames my Canvas Callback URL http://www.example.com/MyApp/ Is there a way to specify a canvas callback url (or bookmark url) which will take the user to a specific page rather than the index page? Why? you may ask. Besides all the benefits of deep links... I want the "Go To Application" url to take users to an index page w/ marketing material (the canvas callback url) I want the "Bookmark URL" to take (likely returning) users to a login page and bypass downloading the marketing content (and that huge SWF file).

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how to access ServletRequest object in gwt-dispatch ActionHandler<>?

- by Stevko

This may be obvious but I can't see to find my way to the ServletRequest object within a gwt-dispatch ActionHandler.execute() method. I'm needing to get to the servlet's getRemoteHost() method. I'm using v1.0 of gwt-dispatch.

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How to detect a pending JDO transaction?

- by Stevko

I believe I am getting JDO commit Exceptions due to the transactions nesting although I'm not sure. Will this detect the situation where I am starting a transaction when another is pending? PersistenceManager pm = PersistenceManagerFactory.get().getPersistenceManager(); assert pm.currentTransaction().isActive() == false : "arrrgh"; pm.currentTransaction().begin(); Is there a better or more reliable way?

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Browser version detect using GWT?

- by Stevko

Is there GWT api that will tell me which browser version it detected? I've found a flaw with IE7's regex handling and need to code around some tricky String.matches() expressions.

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Where did facebook tools go ?

- by Stevko

Does anyone know what happened to the Facebook Tools page? It seems to be missing with the recent API launch. http://developers.facebook.com/tools.php

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maintaining TreeSet sort as object changes value

- by Stevko

I've got a object that defines a 'natural sort order' using Comparable<. These are being stored in TreeSets. Other than removing and re-adding the object, is there another way to update the sort when the members that are used to define the sort order are updated?

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How to hide certain file type using apache .htaccess?

- by Stevko

Its been a long time since I've needed to crack open an .htaccess file... What is the simplest way to 404 prevent access to a specific file extension though out the entire site?

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task strategies for handling HardDeadlineExceededError

- by Stevko

I've got a number of tasks/servlets that are hitting the HardDeadlineExceededError which is leaving everything hanging in an 'still executing' state. The work being done can easily exceed the 29 second threshold. I try to catch the DeadlineExceededException and base Exception in order to save the exit state but neither of these exception handlers are being caught... Is there a way to determine which tasks are in the queue or currently executing? Are there any other strategies for dealing with this situation?

Developer IT