Download WebObjects Developer's Guide (Kaleidoscope) by Ravi Mendis PDF

By Ravi Mendis

WebObjects is an object-oriented internet software server that's used to generate scalable internet and Java functions from reusable templates. A made of Apple desktop, WebObjects? shopper record contains such Fortune 500 businesses as Disney, Adobe, and the BBC. The product?s help for Java 2 company variation and its aggressive pricing are anticipated to extend WebObjects? growing to be place available in the market for net software servers, a marketplace that's anticipated to develop by means of greater than $2 billion in profit through 2002 (Forrester Research). WebObjects Developer?s advisor is a special, step by step consultant for intermediate- to advanced-level builders. It makes use of a hands-on tutorial method of make the delicate and infrequently complicated WebObjects know-how obtainable to builders. The e-book explains WebObjects options and paradigms, and it illustrates the paintings of modeling purposes with the company item Framework. the writer offers sensible perception into WebObjects improvement dependent upon his vast adventure as a expert for significant foreign agencies.

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A NSArray in contrast, represents an ordered list of objects. java. Using WORepetition Next, we are going to generate the HTML image map from the Plist image map. With the WOMappedRollover component open in WebObjects Builder, select one of the WOArea elements. Now click WORepetition icon to repeat this element over a list. 4. 4. Bind the WORepetition list and item attributes. We are taking advantage of the fact that both NSDictionary and NSArray conform to the key value coding APIs. valueForKey("areas") will return you the NSArray of areas.

API Editor. For the highlightedImage binding, select Resources from the Value Set column pop up. Click Required to ensure that the binding is set. Do the same for unhighlightedImage and remove the bindings for onMouseOut and onMouseOver. Select the binding and press Delete. Then, make the imageName binding mandatory. Add one more key, directActionName, as a binding. Select Direct Actions as the Value Set. When you've finished with the API Editor, add a key directActionName to WORollover. Be sure to bind the WOHyperlink directActionName to the key of the same name directActionName.

The best solution in many cases is to circumvent it altogether by employing direct actions and using statelessness wherever possible. Advantages of Direct Actions and Stateless Applications Let's take a brief look at some advantages of using direct actions in stateless applications. • Circumvent or minimize effects of the browser backtracking problem. • Performance and Efficiency: A typical WebObjects application must cache instances of pages in a session. This defaults to 30 pages per session.

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