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Monday, 9 September 2013


XML Source Qualifier


By on September 09, 2013


               
Transformation type:
Active
Connected





When you add an XML source definition to a mapping, you need to connect it to an XML Source Qualifier transformation. The XML Source Qualifier transformation defines the data elements that the PowerCenter Server reads when it executes a session. It determines how the PowerCenter reads the source data. 

An XML Source Qualifier transformation always has one input or output port for every column in the XML source. When you create an XML Source Qualifier transformation for a source definition, the Designer links each port in the XML source definition to a port in the XML Source Qualifier transformation. You cannot remove or edit any of the links. If you remove an XML source definition from a mapping, the Designer also removes the corresponding XML Source Qualifier transformation. You can link one XML source definition to one XML Source Qualifier transformation 

You can link ports of one XML Source Qualifier group to ports of different transformations to form separate data flows. However, you cannot link ports from more than one group in an XML Source Qualifier transformation to ports in the same target transformation. 

You cannot use an XML Source Qualifier transformation in a mapplet. 

You can add an XML Source Qualifier transformation to a mapping by dragging an XML source definition to the Mapping Designer workspace or by manually creating one. 

You can edit some of the properties and add metadata extensions to an XML Source Qualifier transformation. 


You can use an XML Parser transformation to extract XML inside a pipeline. The XML Parser transformation enables you to extract XML data from messaging systems, such as TIBCO or MQ Series, and from other sources, such as files or databases. 

The XML Parser transformation functionality is similar to the XML source functionality, except it parses the XML in the pipeline. For example, you might want to extract XML data from a TIBCO source and pass the data to relational targets. 

The XML Parser transformation reads XML data from a single input port and writes data to one or more output ports. 

You can use an XML Generator transformation to create XML inside a pipeline. The XML Generator transformation enables you to read data from messaging systems, such as TIBCO and MQ Series, or from other sources, such as files or databases. The XML Generator transformation functionality is similar to the XML target functionality, except it generates the XML in the pipeline. For example, you might want to extract data from relational sources and pass XML data to targets. 

The XML Generator transformation accepts data from multiple ports and writes XML through a single output port.

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