PCollectionViews.ListViewFn2 (core 2.44.0 API)

java.lang.Object
- org.apache.beam.sdk.transforms.ViewFn<Materializations.MultimapView<java.lang.Long,PCollectionViews.ValueOrMetadata<T,OffsetRange>>,java.util.List<T>>
- - org.apache.beam.sdk.values.PCollectionViews.ListViewFn2<T>

All Implemented Interfaces:

java.io.Serializable

Enclosing class:

PCollectionViews
```
@Experimental(CORE_RUNNERS_ONLY)
public static class PCollectionViews.ListViewFn2<T>
extends ViewFn<Materializations.MultimapView<java.lang.Long,PCollectionViews.ValueOrMetadata<T,OffsetRange>>,java.util.List<T>>
```
Implementation which is able to adapt a multimap materialization to a List<T>.
For internal use only.
Instantiate via PCollectionViews.listView(org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.KV<java.lang.Long, org.apache.beam.sdk.values.PCollectionViews.ValueOrMetadata<T, org.apache.beam.sdk.io.range.OffsetRange>>>, org.apache.beam.sdk.values.PCollectionViews.TypeDescriptorSupplier<T>, org.apache.beam.sdk.values.WindowingStrategy<?, W>).
PCollectionViews.ListViewFn is meant to be removed in the future and replaced with this class.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

ListViewFn2(PCollectionViews.TypeDescriptorSupplier<T> typeDescriptorSupplier)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.util.List<T>`	`apply(Materializations.MultimapView<java.lang.Long,PCollectionViews.ValueOrMetadata<T,OffsetRange>> primitiveViewT)`	A function to adapt a primitive view type to a desired view type.
`Materialization<Materializations.MultimapView<java.lang.Long,PCollectionViews.ValueOrMetadata<T,OffsetRange>>>`	`getMaterialization()`	Gets the materialization of this `ViewFn`.
`TypeDescriptor<java.util.List<T>>`	`getTypeDescriptor()`	Return the `TypeDescriptor` describing the output of this fn.

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

- Constructor Detail
  - ListViewFn2
```
public ListViewFn2(PCollectionViews.TypeDescriptorSupplier<T> typeDescriptorSupplier)
```
- Method Detail
  - getMaterialization
```
public Materialization<Materializations.MultimapView<java.lang.Long,PCollectionViews.ValueOrMetadata<T,OffsetRange>>> getMaterialization()
```
    Description copied from class: ViewFn
    
    Gets the materialization of this ViewFn.
    
    Specified by:
    
    getMaterialization in class ViewFn<Materializations.MultimapView<java.lang.Long,PCollectionViews.ValueOrMetadata<T,OffsetRange>>,java.util.List<T>>
  - apply
```
public java.util.List<T> apply(Materializations.MultimapView<java.lang.Long,PCollectionViews.ValueOrMetadata<T,OffsetRange>> primitiveViewT)
```
    Description copied from class: ViewFn
    
    A function to adapt a primitive view type to a desired view type.
    
    Specified by:
    
    apply in class ViewFn<Materializations.MultimapView<java.lang.Long,PCollectionViews.ValueOrMetadata<T,OffsetRange>>,java.util.List<T>>
  - getTypeDescriptor
```
public TypeDescriptor<java.util.List<T>> getTypeDescriptor()
```
    Description copied from class: ViewFn
    
    Return the TypeDescriptor describing the output of this fn.
    
    Specified by:
    
    getTypeDescriptor in class ViewFn<Materializations.MultimapView<java.lang.Long,PCollectionViews.ValueOrMetadata<T,OffsetRange>>,java.util.List<T>>