I am able render a jComboBox as shown in this tutorial:

http://www.netbeans.org/kb/docs/java/gui-db-custom.html

public class ClassIDCellRenderer extends DefaultListCellRenderer {
 
@Override
    public Component getListCellRendererComponent(
            JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
        super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
        if (value instanceof TableA) {
            TableA t = (TableA) value;
            setText(n.getname());
        }
        return this;
    }
}

However, I would like to be able to render the jComboBox with data from two different tables instead of just one. For example the above code is pulling from TableA. What if I wanted a concatenated value in the jComboBox that is pulling from both TableA and a TableB?

Thanks in advance for your help
-Kevin

 

 

hii,

sry guy, for this silence about your question, that's JPA relevant, wiki.netbeans sites???

... kopik

 

 

The data to be renderered should be stored in the same comboBox model. So store an Object in the model containing both pieces of information. See this posting for a simple example.

 

 

Thanks for your reply camickr. I really appreciate it, I played around with that example for awhile, but I am still having trouble implementing what I want to do. Let me ask the question in a different way.

So say I have the following tables:

CREATE TABLE A (
ID INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
NAME VARCHAR(50),
TYPE VARCHAR(50)
);

CREATE TABLE B (
ID INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
DAYOFWEEK VARCHAR(50),
LENGTH INT
);

In my ComboBox, I want it to display the NAME from TABLE A and the DAYOFWEEK and LENGTH from TABLE B

I was hoping something like the following would work, but it casts a class exception.

public class ClassIDCellRenderer extends DefaultListCellRenderer {
 
@Override
    public Component getListCellRendererComponent(
            JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
        super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
  
        if (value != null)
			{
				Tablea a = (Tablea)value;
                                Tableb b = (Tableb)value;
				setText( a.getName() + " " + b.getDayofweek() + " " + b.getLength() );
			}
 
			return this;
		}
	}

Thanks again for your help. Sorry I didn't catch on to the first example.

-Kevin