Executing a PDI transformation
When we execute a transformation we typically load the ETL metadata that describes the workload. This is handled by the TransMeta object. Then we execute this workload with a transformation engine handled by the Trans object. This means we first need to load a TransMeta object from XML (with a TransMeta constructor as described below where repository can be null) or or from a repository.
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TransMeta transMeta = new TransMeta("/foo/bar/trans.ktr", repository); |
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Trans Trans = new Trans(transMeta); |
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// // The following will run the transformation in a separate thread.// |
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trans.execute( |
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arguments); |
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// If you want to wait until the transformation is finished... |
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// |
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trans.waitUntilFinished(); // |
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// If you want to know about the execution result. |
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// |
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Result result = trans.getResult(); |
The Result object contains all sorts of interesting results pertaining to the execution, including the number of errors, parsed files and much more as described described over here.
Note: command line arguments are not to be confused with named parameters.