Generic NumberCell

[albertogiantin]

Hi all,
I can't understand why NumberCell extends the typed class AbstractCell<Number>?
Would not be better if the class were built in this way?

public class NumberCell<T extends Number> extends AbstractCell<T> {
...

With current implementation of NumberCell configuring ColumnConfig like this:

		ColumnConfig<CPP, Long> cpp2 = new ColumnConfig<CPP, Long>(props.cpp2(), 100, constants.fairValue());
		cpp2.setCell(new NumberCell(cnfmt));

I get this error: The method setCell(Cell<Long>) in the type ColumnConfig<CPP,Long> is not applicable for the arguments (NumberCell) because the field cpp2 is of type Long.

The other hand with the implementation of the above, I can write something like:

		ColumnConfig<CPP, Long> cpp2 = new ColumnConfig<CPP, Long>(props.cpp2(), 100, constants.fairValue());
		cpp2.setCell(new NumberCell<Long>(cnfmt));

Can anyone tell me if I'm doing something wrong?

[Colin Alworth]

It is that way:

package com.sencha.gxt.cell.core.client;

//...

public class NumberCell<N extends Number> extends AbstractCell<N> {

I think you might be looking at the GWT NumberCell implementation, which does restrict you to Number:

package com.google.gwt.cell.client;

//...

/**
 * A {@link Cell} used to render formatted numbers.
 */
public class NumberCell extends AbstractCell<Number> {

[albertogiantin]

You're right, sorry for this oversight.