Beginning Java Google App Engine by Kyle Roche, Jeff Douglas

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By Kyle Roche, Jeff Douglas

I used to be very pissed off with my buy and that i used to be considering to write down a assessment out of frustration. notwithstanding, after i have obvious the 5-star stories from different clients, i could not think my eyes. One evaluation was once raving concerning the code samples (absolutely ridiculous) after which I observed another reader leaving a remark for the assessment asserting that he is been engaged on the pattern code for weeks and nonetheless could not make it paintings and that i can relate to that.

I pre-order this publication from Amazon and whilst I commence analyzing it, it used to be a complete unhappiness. i have been engaged on GAE/J for it slow now and that i acquired this ebook particularly to benefit extra approximately Google bills. the instance tasks usually are not whole and it calls for you to fill within the blanks to lead them to paintings. i have additionally checked out the opposite chapters and so they lack in content material. The booklet attempts to provide you total, breadth-first view of the know-how (as you'll anticipate from a newbie point book), yet whereas doing so it mentions approximately bunch of GAE issues, yet fails on giving reliable assurance for that subject. specially in bankruptcy four, while the author(s) discuss frameworks, they do not point out approximately gotchas on the way to make those frameworks paintings on the first position, simply because in case you are utilizing Spring, BlazeDS and GraniteDS (or the other frameworks, you want to do yes tweaks to make those frameworks/technologies/APIs paintings with GAE, simply because the various Java APIs are "black-listed" by means of the App Engine for the most obvious reasons.

If you are a newbie, this isn't a ebook for you. in case you are complex, in spite of this this e-book does not offer you sufficient in-depth details of the GAE/J subject matters. In end, it really is unhappy to assert, yet this e-book is lifeless! it can save you cash simply by going to Google's App Engine site and locate extra updated and entire info, simply because they retain changing/upgrading the SDKs for GWT and the App Engine virtually each month.

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Additional resources for Beginning Java Google App Engine

Example text

This includes time spent running the application and performing datastore operations but excludes time spent waiting for the responses from other services. For example, if your application is waiting for a response from a URL Fetch request, you are not using CPU time for that transaction. CPU time is reported in seconds. 2 GHz Intel x86 processor in that amount of time. The actual number of cycles may vary and depends on the conditions internal to App Engine. 2 GHz processor as a benchmark. If you’re using Python on App Engine you can profile your application in a bit more detail during a transaction.

App Engine Quota Types Quota Type Billable Quota Fixed Quota Description • Maximums are set by the user • Budget-based • Vary by application and can be set by the administrator • Maximums are set by App Engine • System-based • Same for all applications on App Engine Most applications, and surely everything we show you in this book, will fit well within the fixed quota limits of the free version of App Engine. Enabling billing on your App Engine application increases your quota limits beyond what is provided with the free version.

Look for the onModuleLoad() method. It should look similar to the code in Listing 3-2. Listing 3-2. setFocus(true); } }); Without ever even using GWT you can quickly browse the code and follow exactly what is happening. The method loads the Google Web Toolkit elements in an order and fashion that lays out your page perfectly. Take the following lines, for example. html file from the web application archive (war directory) you can see the following HTML elements.

GWT, using the add() method of the RootPanel class, knows to insert the GWT components in that section of the application’s HTML.

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