org.pentaho.di.lineage

Class TransDataLineage

java.lang.Object

org.pentaho.di.lineage.TransDataLineage

public class TransDataLineage
extends Object

This class will help calculate and contain the data lineage for all values in the transformation.
What we will get is a List of ValueLineage objects for all the values steps in the transformation.
Each of these ValueLineage objects contains a list of all the steps it passed through.
As such, it's a hierarchical view of the transformation.
This view will allow us to see immediately where a certain value is being manipulated.

Author:

matt

Constructor Summary

Constructors

Constructor and Description
TransDataLineage(TransMeta transMeta)

Method Summary

Modifier and Type	Method and Description
void	calculateLineage() Using the transformation, we will calculate the data lineage for each field in each step.
TransMeta	getTransMeta()
List<ValueLineage>	getValueLineages()
void	setTransMeta(TransMeta transMeta)
void	setValueLineages(List<ValueLineage> valueLineages)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TransDataLineage

public TransDataLineage(TransMeta transMeta)

Method Detail

getTransMeta

public TransMeta getTransMeta()

setTransMeta

public void setTransMeta(TransMeta transMeta)

getValueLineages

public List<ValueLineage> getValueLineages()

Returns:

the valueLineages

setValueLineages

public void setValueLineages(List<ValueLineage> valueLineages)

Parameters:

valueLineages - the valueLineages to set

calculateLineage

public void calculateLineage()
                      throws org.pentaho.di.core.exception.KettleStepException

Using the transformation, we will calculate the data lineage for each field in each step.

Throws:

org.pentaho.di.core.exception.KettleStepException - In case there is an exception calculating the lineage. This is usually caused by unavailable data sources etc.