PipelineDataLineage (Hop Engine 2.3.0 API)

java.lang.Object
- org.apache.hop.lineage.PipelineDataLineage

```
public class PipelineDataLineage
extends Object
```
This class will help calculate and contain the data lineage for all values in the pipeline.
What we will get is a List of ValueLineage objects for all the values transforms in the pipeline.
Each of these ValueLineage objects contains a list of all the transforms it passed through.
As such, it's a hierarchical view of the pipeline.

This view will allow us to see immediately where a certain value is being manipulated.

Constructor Summary

Constructors
Constructor Description

PipelineDataLineage(PipelineMeta pipelineMeta)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`calculateLineage(IVariables variables)`	Using the pipeline, we will calculate the data lineage for each field in each transform.
`PipelineMeta`	`getPipelineMeta()`
`List<ValueLineage>`	`getValueLineages()`
`void`	`setPipelineMeta(PipelineMeta pipelineMeta)`
`void`	`setValueLineages(List<ValueLineage> valueLineages)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - PipelineDataLineage
```
public PipelineDataLineage(PipelineMeta pipelineMeta)
```
- Method Detail
  - getPipelineMeta
```
public PipelineMeta getPipelineMeta()
```
  - setPipelineMeta
```
public void setPipelineMeta(PipelineMeta pipelineMeta)
```
  - 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(IVariables variables)
                      throws HopTransformException
```
    Using the pipeline, we will calculate the data lineage for each field in each transform.
    
    Throws:
    
    HopTransformException - In case there is an exception calculating the lineage. This is usually caused by unavailable data sources etc.