JSF preload list for datatable in page

Question

I'm using EJB and JSF. I made a jsp simple page with a button "get list". When it's clicked, a managed bean method is called that sets the list, which is then displayed in the jsp with the dataTable tag.

The question is, how can I pre load this list/dataTable on page load without having to click the button?

This is the method that's called through the button action on the jsp:

public String retrieveList() {
    items = facade.getAllItem();
    return "";
}

this is the part of the jsp:

<h:dataTable value="#{mybean.items}" var="sup"
    binding="#{mybean.dataTable}"
    rowClasses="oddRow, evenRow"
    styleClass="tableStyle"
    headerClass="tableHeader"
    columnClasses="column1, column2, column1, column1, column1, column1">

score 4 · Answer 1 · answered Sep 16 '10 at 15:10

4

You can add a method init with @postConstruct

@PostConstruct
public void init(){
  items = facade.getAllItem();
}

This will return the items only on bean creation ,

answered Sep 16 '10 at 15:10

Dejell

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BalusC · Accepted Answer · 2012-11-12T20:01:54.067

2

Annotate the method with @PostConstruct and get rid of return value.

@PostConstruct
public void retrieveList() {
    items = facade.getAllItem();
}

This way the method will be executed immediately after construction of the bean and injection of all @EJB dependencies. In the JSF page you just have to bind to #{bean.items} the usual way.

edited Nov 12 '12 at 20:01

answered Sep 16 '10 at 15:08

BalusC

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You're welcome. Don't forget to mark the most helpful answer to accepted. See also http://stackoverflow.com/faq. – BalusC Sep 18 '10 at 16:15

JSF preload list for datatable in page

2 Answers2