Why did we do this, because no component was available in ADF to build this matrix ‘rapidly’ and ‘easily’ and because we need to perform operations on this matrix-data as well which can be handled in easy way now because we’ve defined a proper model- and bizzlogic-layer for this.

A matrix-component does come in handy but the question is, where do you need to put this complexity, isn’t it better to keep the client interface as clean as possible and to adjust your model- and bizz-logic layer? JSF as such uses a complex refreshing cycle and adding complex components to this framework could lead to weard behaviour wright? Maybe ‘the matrix’ is an enhancement that needs to be looked at by the JDev Development Team because, as you stated, it’s a very complex and time-consuming component to work-out.

At some later stage I will allow the the user to create new rows by selecting a value for the row label from a drop downlist and perhaps also free format. I will add screenshots shortly – however, I first have to integrate the matrix in the product we are about to release a new edition of.

Lucas