ViewManager

java.lang.Object
- io.opencensus.stats.ViewManager

Direct Known Subclasses:

NoopStats.NoopViewManager, ViewManagerImpl
```
public abstract class ViewManager
extends java.lang.Object
```
Provides facilities to register Views for collecting stats and retrieving stats data as a ViewData.

Since:

0.8

Constructor Summary

Constructors
Constructor Description

ViewManager()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`abstract java.util.Set<View>`	`getAllExportedViews()`	Returns all registered views that should be exported.
`abstract ViewData`	`getView(View.Name view)`	Returns the current stats data, `ViewData`, associated with the given view name.
`abstract void`	`registerView(View view)`	Pull model for stats.

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

- Constructor Detail
  - ViewManager
```
public ViewManager()
```
- Method Detail
  - registerView
```
public abstract void registerView(View view)
```
    Pull model for stats. Registers a View that will collect data to be accessed via getView(View.Name).
    
    Parameters:
    
    view - the View to be registered.
    
    Since:
    
    0.8
  - getView
```
@Nullable
public abstract ViewData getView(View.Name view)
```
    Returns the current stats data, ViewData, associated with the given view name.
    Returns null if the View is not registered.
    
    Parameters:
    
    view - the name of View for the current stats.
    
    Returns:
    
    ViewData for the View, or null if the View is not registered.
    
    Since:
    
    0.8
  - getAllExportedViews
```
public abstract java.util.Set<View> getAllExportedViews()
```
    Returns all registered views that should be exported.
    This method should be used by any stats exporter that automatically exports data for views registered with the ViewManager.
    
    Returns:
    
    all registered views that should be exported.
    
    Since:
    
    0.9