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Pentaho Data Integration 4 Cookbook by María Carina Roldán, Adrián Sergio Pulvirenti

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Executing a job or a transformation from a job by setting arguments and parameters dynamically

Suppose that you developed a transformation which reads command-line arguments or defines named parameters. Now you want to call that transformation from a job, but you don't know the values for the arguments or the parameters; you have to take them from some media, for example, a file or a table in a database. This recipe shows you how to get those values and pass them to the transformation at runtime.

For this recipe, suppose that you want to create a file with a sequence of numbers. You have a transformation that does it. The problem is that the limits from and to and the increment value are stored in a properties file. This represents an obstacle ...

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