Technotrance, Illusions and Perspectives » dwr http://myblog.shriharisc.com A dose of everyday bruises with Java/JEE Mon, 02 Aug 2010 17:45:42 +0000 http://wordpress.org/?v=2.8.5 en hourly 1 Using enums in DWR to populate select or multi-select http://myblog.shriharisc.com/2009/07/06/using-enums-in-dwr-to-populate-select-or-multi-select/ http://myblog.shriharisc.com/2009/07/06/using-enums-in-dwr-to-populate-select-or-multi-select/#comments Mon, 06 Jul 2009 18:04:04 +0000 Shrihari http://schakrap.wordpress.com/?p=61 In case we need to population enumeration data in combo  box or multi-select widgets, in DWR (integrated on Spring), following is the approach:

1) In the spring’s applicationContext.
a) Add the method which returns the enum entity to <dwr:remote>
b) Add a dwr:convert tag of type ‘enum’ (as below)

<dwr:remote javascript="myoperations">
   <dwr:include method="getDataAsEnum"/>
   <dwr:convert type="enum"/>
</dwr:remote>

2) In the view (jsp) file, you could invoke the following javascript function 

<body onload="loadEnumeration();">
function loadEnumeration()
{ myOperations.getDataAsEnum(callbackFunctionHandle);
};
var callbackFunctionHandle = function(data)
{   dwr.util.removeAllOptions('enum_select');
     dwr.util.addOptions('enum_select',['--Select--']);
     dwr.util.addOptions('enum_select', data);
}
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