Detailed Description of Data Format Changer

Performs transformation of input data format. Output data contains a new data format, where input values are matched with corresponding output columns. Transformations are only performed on input data specified in the "columns" section. Output columns not defined in the input "columns" section cannot be used.

Consider an input format with column definitions for the columns "id", and "foo". Then, consider an output format with column definitions for the columns "id", "data", and "dummy". The data will processed in the following fashion:

The column "dummy" is new and therefore will be empty.


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Example: Example
                        
<step id='c1' className='cz.adastra.cif.tasks.flow.DataFormatChanger'>
        <properties>
                <columns>
                        <column name='id'/>
                        <column name='data' src='foo'/>
                </columns>
                <shadowColumns>
                        <column name='dummy' type='string'/>
                </shadowColumns>
        </properties>
</step>

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