Package org.apache.druid.segment.transform

Class TransformSpec

java.lang.Object

org.apache.druid.segment.transform.TransformSpec

public class TransformSpec
extends Object

Specifies how input rows should be filtered and transforms. There are two parts: a "filter" (which can filter out input rows) and "transforms" (which can add fields to input rows). Filters may refer to fields generated by a transform. See Transform for details on how each transform works.

Field Summary

Fields

Modifier and Type	Field	Description
static final TransformSpec	NONE

Constructor Summary

Constructors

Constructor	Description
TransformSpec(DimFilter filter, List<Transform> transforms)

Method Summary

Modifier and Type	Method	Description
<T> InputRowParser<T>	decorate(InputRowParser<T> parser)
InputSourceReader	decorate(InputSourceReader reader)
boolean	equals(Object o)
DimFilter	getFilter()
Set<String>	getRequiredColumns()
List<Transform>	getTransforms()
int	hashCode()
String	toString()
Transformer	toTransformer()	Create a Transformer from this TransformSpec, when the rows to be transformed do not have a known signature.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

NONE

public static final TransformSpec NONE

Constructor Details

TransformSpec

public TransformSpec(DimFilter filter,
 List<Transform> transforms)

Method Details

getFilter

@Nullable
public DimFilter getFilter()

getTransforms

public List<Transform> getTransforms()

decorate

public <T> InputRowParser<T> decorate(InputRowParser<T> parser)

decorate

public InputSourceReader decorate(InputSourceReader reader)

toTransformer

public Transformer toTransformer()

Create a Transformer from this TransformSpec, when the rows to be transformed do not have a known signature.

getRequiredColumns

public Set<String> getRequiredColumns()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object