ObjectHolder.SingletonHolder (Pathling 6.2.3 API)

java.lang.Object
- au.csiro.pathling.utilities.ObjectHolder.SingletonHolder<C,V>

All Implemented Interfaces:: ObjectHolder<C,V>, Closeable, AutoCloseable

Enclosing interface:: ObjectHolder<C extends Serializable,V>

public static class ObjectHolder.SingletonHolder<C extends Serializable,V>
extends Object
implements ObjectHolder<C,V>, Closeable

Nested Class Summary
- Nested classes/interfaces inherited from interface au.csiro.pathling.utilities.ObjectHolder
  ObjectHolder.SingletonHolder<C extends Serializable,V>

Field Summary

Fields
Modifier and Type Field Description

static int DEFAULT_SHUTDOWN_HOOK_PRIORITY
The default priority of the shutdown hook.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`	Closes this singleton and releases any system resources associated with it.
`V`	`getOrCreate(C config)`	Retrieves the instance associated with given configuration and if necessary creates ones.
`void`	`reset()`	Destroys all the instances stored the underlying scope.

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

- Field Detail
  - DEFAULT_SHUTDOWN_HOOK_PRIORITY
```
public static int DEFAULT_SHUTDOWN_HOOK_PRIORITY
```
    The default priority of the shutdown hook. This is set to be executed after the SparkContext shutdown hook (which has priority 50) and before temporary dirs are cleaned up (priority 25). See ShutdownHookManager for more info on Spark related shutdown hooks.
- Method Detail
  - getOrCreate
```
@Nonnull
public V getOrCreate(@Nonnull
                     C config)
```
    Description copied from interface: ObjectHolder
    
    Retrieves the instance associated with given configuration and if necessary creates ones.
    
    Specified by:
    
    getOrCreate in interface ObjectHolder<C extends Serializable,V>
    
    Parameters:
    
    config - the configuration for the instance.
    
    Returns:
    
    the instance associated with the holder.
  - reset
```
public void reset()
```
    Description copied from interface: ObjectHolder
    
    Destroys all the instances stored the underlying scope.
    
    Specified by:
    
    reset in interface ObjectHolder<C extends Serializable,V>
  - close
```
public void close()
```
    Closes this singleton and releases any system resources associated with it. If the singleton is already closed then invoking this method has no effect.
    
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in interface Closeable