Get Apache Wicket Cookbook PDF

By Igor Vaynberg

ISBN-10: 1849511608

ISBN-13: 9781849511605

This can be a hands-on sensible consultant to a wide number of themes and use situations. This ebook attempts to take advantage of real-world examples while attainable, yet isn't afraid to come back up with a contrived pretext if it makes explaining the matter less complicated. not like loads of different books, this one doesn't attempt to hold a continuing topic from bankruptcy to bankruptcy, corresponding to demonstrating options at the comparable fictional software; doing so will be nearly very unlikely given the big variety of recipes offered the following. as a substitute, this ebook concentrates on concentrated difficulties clients tend to come upon and indicates transparent options in a step by step demeanour. This ebook attempts to coach via instance and isn't afraid to teach loads of code simply because, in the end, it's for coders. This ebook is for present clients of the Apache Wicket framework; it isn't an creation to Wicket that might bore you with hundreds idea. you're anticipated to have equipped or maintained an easy Wicket software some time past and to be trying to examine new and higher methods of utilizing Wicket. while you're able to take your Wicket abilities to the following point this publication is for you.

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Example text

All Wicket components that work with models are aware of Wicket's conversion infrastructure. When a component needs to present its model object as a part of html markup, it first runs it through the conversion infrastructure to convert it to a string. When a component needs to convert a user's input, which is typically a string, back to a model object it once again runs it through the conversion infrastructure, this time to convert the string value back to the object. IConverter the interface, and a converter locator responsible for finding converters that can convert from an object of the given class to a string and back.

Model. IObjectClassAwareModel. Time will be needed. However, there are times when we may wish to override the converter on a case by case basis. >) method. For example, had we not registered our converter globally we could still use it. properties which only made them available in that particular page. In most cases, however, it may make more sense to put them into Application's global property bundle so they are available everywhere. See also ff 32 See the Creating a custom validator recipe in this chapter on how to create field validators.

Get(0); // add a feedback panel and a form // see sample code } } How to do it... We now have everything necessary to implement the selectboxes. 1. Lets begin by implementing a model that will feed the country selectbox a list of countries. java private static class CountriesModel extends LoadableDetachableModel> { protected List

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Apache Wicket Cookbook by Igor Vaynberg

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