JSF refresh current document

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If you ever wanted to refresh the current document to reflect new information...below is the method that you will need...

    public void RefreshCurrentDocument() {
        FacesContext context = FacesContext.getCurrentInstance();
        String currentView = context.getViewRoot().getViewId();
        ViewHandler vh = context.getApplication().getViewHandler();
        UIViewRoot x = vh.createView(context, currentView);
        context.setViewRoot(x);
    }

Good Luck...

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JSF SelectOneMenu valueChangeListener

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Today I used the following code in one of my projects...(the below is just a pseudo code..)

Inside the bean I had:
    public void mymethod(ValueChangeEvent ve)
    {
      ...
      ...
    }

I hoped that changing value on the select menu would fire the method but instead nothing happened...if you are also stuck at this point...change the code as follows:

Notice the onchage attribute that is newly added...this will fire the method...

Hope this helps...

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EJB entity relations onetomany

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Using @OneToMany and @ManyToOne entity relationship might sound little difficult and confusing in the beginning but actually it is very easy. I recently used it in one of my projects and it worked great.

Here is how the code in your entities should look like...

Assuming table 1 and table 2 have one to many relationship...then...

in the table 1 entity...you have...

...
    @OneToMany(mappedBy="table2mapping")
    private Collection table2list;
   ..associated getter and setter...

in the table2 entity..you have...

@JoinColumn(name = "table2ID", referencedColumnName = "table1ID", insertable=false, updatable=false)
    @ManyToOne
    private table1 table2mapping;

@JoinColumn should be changed depending upon your requirements...
Let me know if you have any questions...

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Tomahawk datatable sorting

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Guys,


If you are trying to use sorting on Tomahawk datatable, I suggest that you use the latest tomahawk jar file. The one that worked for me is tomahawk-1.1.9.jar


1. there is no need to write any additional code in the backing bean

2. your column should look in the following format...the below is just an example...

In the above code notice that sortable=true attribute...it takes care of everything...also notice that by setting arrow=true would have eliminated the additional code of including your own images...

let me know if you have any questions...

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