Friday, 19 April 2013

How to get Selected graph point details in ADF Graphs

To get the selected graph point information u need to set the click listener for the graph:

dvt:barGraph should have the clickListener
< dvt:barGraph id="Graph1"
value="#{bindings.View1.graphModel}"
subType="BAR_VERT_CLUST"
clickListener="#{MyBeab.clickAction}" ...>

In bean the clickListener should be implemented as follows:
 void processClick(ClickEvent event)
{
     ComponentHandle handle = event.getComponentHandle();
     if (handle instanceof DataComponentHandle)
     {
         DataComponentHandle dhandle = (DataComponentHandle)handle;
         // Get the value displayed in the series
         System.out.println("Value: " + dhandle.getValue(DataComponentHandle.UNFORMATTED_VALUE));
 
         // Get the series attributes
         Attributes [] seriesInfo = dhandle.getSeriesAttributes();
         if(seriesInfo != null)
         {
             for(Attributes attrs: seriesInfo)
             {
                 System.out.println("Series value: " + attrs.getValue(Attributes.LABEL_VALUE));
                 System.out.println("Series name: " + attrs.getValue(Attributes.LABEL_ATTRIBUTE));
                 System.out.println("Series value id: " + attrs.getValue(Attributes.ID_VALUE));
                 System.out.println("Series name id: " + attrs.getValue(Attributes.ID_ATTRIBUTE));
             }
         }
         // Get the group attributes
         Attributes [] groupInfo = dhandle.getGroupAttributes();
         if(groupInfo != null)
         {
             for(Attributes attrs: groupInfo)
             {
                 System.out.println("Group value: " + attrs.getValue(Attributes.LABEL_VALUE));
                 System.out.println("Group name: " + attrs.getValue(Attributes.LABEL_ATTRIBUTE)); 
             }
         }
     }
 }

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