PTransformMatchers (Apache Beam SDK for Java, version 2.0.0 API)

java.lang.Object
- org.apache.beam.runners.core.construction.PTransformMatchers

```
@Experimental(value=CORE_RUNNERS_ONLY)
public class PTransformMatchers
extends Object
```
A PTransformMatcher that matches PTransforms based on the class of the transform.
Once PTransforms have URNs, this will be removed and replaced with a UrnPTransformMatcher.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static PTransformMatcher`	`classEqualTo(Class<? extends PTransform> clazz)` Returns a `PTransformMatcher` that matches a `PTransform` if the class of the `PTransform` is equal to the `Class` provided ot this matcher.
`static PTransformMatcher`	`createViewWithViewFn(Class<? extends ViewFn> viewFnType)`
`static PTransformMatcher`	`emptyFlatten()` A `PTransformMatcher` which matches a `Flatten.PCollections` which consumes no input `PCollections`.
`static PTransformMatcher`	`flattenWithDuplicateInputs()` A `PTransformMatcher` which matches a `Flatten.PCollections` which consumes a single input `PCollection` multiple times.
`static PTransformMatcher`	`parDoWithFnType(Class<? extends DoFn> fnType)` A `PTransformMatcher` which matches a `ParDo.SingleOutput` or `ParDo.MultiOutput` where the `DoFn` is of the provided type.
`static PTransformMatcher`	`splittableParDoMulti()` A `PTransformMatcher` that matches a `ParDo.MultiOutput` containing a `DoFn` that is splittable, as signified by `DoFnSignature.ProcessElementMethod.isSplittable()`.
`static PTransformMatcher`	`splittableParDoSingle()` A `PTransformMatcher` that matches a `ParDo.SingleOutput` containing a `DoFn` that is splittable, as signified by `DoFnSignature.ProcessElementMethod.isSplittable()`.
`static PTransformMatcher`	`stateOrTimerParDoMulti()` A `PTransformMatcher` that matches a `ParDo.MultiOutput` containing a `DoFn` that uses state or timers, as specified by `DoFnSignature.usesState()` and `DoFnSignature.usesTimers()`.
`static PTransformMatcher`	`stateOrTimerParDoSingle()` A `PTransformMatcher` that matches a `ParDo.SingleOutput` containing a `DoFn` that uses state or timers, as specified by `DoFnSignature.usesState()` and `DoFnSignature.usesTimers()`.
`static PTransformMatcher`	`writeWithRunnerDeterminedSharding()`

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

- Method Detail
  - classEqualTo
```
public static PTransformMatcher classEqualTo(Class<? extends PTransform> clazz)
```
    Returns a PTransformMatcher that matches a PTransform if the class of the PTransform is equal to the Class provided ot this matcher.
  - splittableParDoSingle
```
public static PTransformMatcher splittableParDoSingle()
```
    A PTransformMatcher that matches a ParDo.SingleOutput containing a DoFn that is splittable, as signified by DoFnSignature.ProcessElementMethod.isSplittable().
  - stateOrTimerParDoSingle
```
public static PTransformMatcher stateOrTimerParDoSingle()
```
    A PTransformMatcher that matches a ParDo.SingleOutput containing a DoFn that uses state or timers, as specified by DoFnSignature.usesState() and DoFnSignature.usesTimers().
  - splittableParDoMulti
```
public static PTransformMatcher splittableParDoMulti()
```
    A PTransformMatcher that matches a ParDo.MultiOutput containing a DoFn that is splittable, as signified by DoFnSignature.ProcessElementMethod.isSplittable().
  - stateOrTimerParDoMulti
```
public static PTransformMatcher stateOrTimerParDoMulti()
```
    A PTransformMatcher that matches a ParDo.MultiOutput containing a DoFn that uses state or timers, as specified by DoFnSignature.usesState() and DoFnSignature.usesTimers().
  - parDoWithFnType
```
public static PTransformMatcher parDoWithFnType(Class<? extends DoFn> fnType)
```
    A PTransformMatcher which matches a ParDo.SingleOutput or ParDo.MultiOutput where the DoFn is of the provided type.
  - createViewWithViewFn
```
public static PTransformMatcher createViewWithViewFn(Class<? extends ViewFn> viewFnType)
```
  - emptyFlatten
```
public static PTransformMatcher emptyFlatten()
```
    A PTransformMatcher which matches a Flatten.PCollections which consumes no input PCollections.
  - flattenWithDuplicateInputs
```
public static PTransformMatcher flattenWithDuplicateInputs()
```
    A PTransformMatcher which matches a Flatten.PCollections which consumes a single input PCollection multiple times.
  - writeWithRunnerDeterminedSharding
```
public static PTransformMatcher writeWithRunnerDeterminedSharding()
```

Class PTransformMatchers

Method Summary

Methods inherited from class java.lang.Object

Method Detail

classEqualTo

splittableParDoSingle

stateOrTimerParDoSingle

splittableParDoMulti

stateOrTimerParDoMulti

parDoWithFnType

createViewWithViewFn

emptyFlatten

flattenWithDuplicateInputs

writeWithRunnerDeterminedSharding