At the lunch session of the OKC JUG today, a question was asked about the difference between the valueChangeListener attribute and <f:valueChangeListener/>. That is,

<h:selectOneMenu id="optionMenu" value="#{optionBean.selectedOption}" valueChangeListener="#{optionBean.optionChanged}" onchange="submit()"> <f:selectItems value="#{optionBean.optionList}" /> </h:selectOneMenu>

and

<h:selectOneMenu id="optionMenu" value="#{optionBean.selectedOption}" onchange="submit()"> <f:selectItems value="#{optionBean.optionList}" /> <f:valueChangeListener type="com.mycompany.MyValueChangeListenerImpl" /> </h:selectOneMenu>

The question was, which is “better?” There was also a question if the latter form automatically handled the JS on the parent component. I will now attempt to answer those questions now.
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Popularity: 81% [?]

I’ve been doing a fair amount of JSF component writing of late, and, invariably, I miss one or more “minor” details, causing my component to explode in spectacular fashion at runtime. What follows, then, is a check list for writing JSF components, with notes on the differences between the 1.1 and 1.2 versions of the specification. (more…)

Popularity: 45% [?]