datamart: Combine resource into a mashup object
In datamart: Unified access to your data sources

Description Usage Arguments Details See Also Examples

The Mashup class administers a list of Xdata objects. This can be data objects representing different data sources such as internal data or web data. It can also be calculated data resources, so-called resource functions of class ResFunc.

Constructor for Mashup objects

1	datamart(..., clss = "Mashup")

`...`	named arguments of Xdata objects
`clss`	name of the class to create. Default Mashup, must be inherited from this class.

In a way, this class can be viewed as a make-like tool for data. The resource functions can declare dependencies. When a resource is requested by the query method, the Mashup class takes care of the build order.

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