ExtractionService (nxcals-docs 1.2.8 API)

```
public interface ExtractionService
```
Represents a service for data extraction actions, as configured by the provided properties. Actions defined on this service operate on top of raw data that are directly extractable via DataQuery or DevicePropertyDataQuery.

See Also:

Variable, Entity, ExtractionProperties

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`org.apache.spark.sql.Dataset<org.apache.spark.sql.Row>`	`getData(Entity entity, ExtractionProperties properties)`	Returns a `Dataset` based on the provided `entity`, controlled by the given `extraction properties`.
`org.apache.spark.sql.Dataset<org.apache.spark.sql.Row>`	`getData(Variable variable, ExtractionProperties properties)`	Returns a `dataset` based on the provided `variable`, controlled by the given `extraction properties`.

- Method Detail
  - getData
```
org.apache.spark.sql.Dataset<org.apache.spark.sql.Row> getData(Variable variable,
                                                               ExtractionProperties properties)
```
    Returns a dataset based on the provided variable, controlled by the given extraction properties. This action extracts variable data for a given time window, enhanced by a configurable lookup strategy.
    
    Parameters:
    
    variable - an instance of Variable pointing to raw data for the extraction
    
    properties - the extraction properties containing all semantics to control the action
    
    Returns:
    
    a dataset of the extracted rows
  - getData
```
org.apache.spark.sql.Dataset<org.apache.spark.sql.Row> getData(Entity entity,
                                                               ExtractionProperties properties)
```
    Returns a Dataset based on the provided entity, controlled by the given extraction properties. This action extracts entity data for a given time window, enhanced by a configurable lookup strategy.
    
    Parameters:
    
    entity - an instance of Entity pointing to raw data for the extraction
    
    properties - the extraction properties containing all semantics to control the action
    
    Returns:
    
    a dataset of the extracted rows