Jsf el not null check

The empty operator is a prefix operator that can be used to determine if a value is null or empty. So, considering the interfaces, it works on Collection and Map only.

In your case, I think Collection is the best option. Or, if it's a Javabean-like object, then Map. Either way, under the covers, the isEmpty method is used for the actual check. On interface methods which you can't or don't want to implement, you could throw UnsupportedOperationException.

Using BalusC's suggestion of implementing Collection i can now hide my primefaces p:dataTable using not empty operator on my dataModel that extends javax. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more.

Ask Question. Asked 9 years ago. Active 6 years, 11 months ago. Viewed k times. BalusC 1. Aksel Willgert Aksel Willgert 11k 5 5 gold badges 48 48 silver badges 72 72 bronze badges. Forum: JSF. Maria Diminuta. I like Optional 'thank-you' note:. Should I check with "myObject. Cesar Loachamin. Welcome to JavaRanch Maria!! Sure you use myObject.

Hehe thanks!! Add a comment. Active Oldest Votes. Did you try Raul Cuth Raul Cuth 1, 9 9 silver badges 16 16 bronze badges. The Overflow Blog. Podcast Making Agile work for data science. Stack Gives Back Featured on Meta.

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