TransformSpec (druid-processing 27.0.0 API)

```
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.

Fields
Modifier and Type	Field and Description
`static TransformSpec`	`NONE`

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

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and 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

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

@Nullable
public DimFilter getFilter()

public List<Transform> getTransforms()

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

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.

public Set<String> getRequiredColumns()

Class TransformSpec