ConfigurationSpi (Java SE 12 & JDK 12 )

java.lang.Object
- javax.security.auth.login.ConfigurationSpi

```
public abstract class ConfigurationSpi
extends Object
```
This class defines the Service Provider Interface (SPI) for the Configuration class. All the abstract methods in this class must be implemented by each service provider who wishes to supply a Configuration implementation.
Subclass implementations of this abstract class must provide a public constructor that takes a Configuration.Parameters object as an input parameter. This constructor also must throw an IllegalArgumentException if it does not understand the Configuration.Parameters input.

Since:

1.6

Constructor Summary

Constructors
Constructor Description

ConfigurationSpi()

Method Summary

Modifier and Type	Method	Description
`protected abstract AppConfigurationEntry[]`	`engineGetAppConfigurationEntry(String name)`	Retrieve the AppConfigurationEntries for the specified `name`.
`protected void`	`engineRefresh()`	Refresh and reload the Configuration.

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

- Constructor Detail
  - ConfigurationSpi
```
public ConfigurationSpi()
```
- Method Detail
  - engineGetAppConfigurationEntry
```
protected abstract AppConfigurationEntry[] engineGetAppConfigurationEntry(String name)
```
    Retrieve the AppConfigurationEntries for the specified name.
    
    Parameters:
    
    name - the name used to index the Configuration.
    
    Returns:
    
    an array of AppConfigurationEntries for the specified name, or null if there are no entries.
  - engineRefresh
```
protected void engineRefresh()
```
    Refresh and reload the Configuration.
    This method causes this Configuration object to refresh/reload its contents in an implementation-dependent manner. For example, if this Configuration object stores its entries in a file, calling refresh may cause the file to be re-read.
    The default implementation of this method does nothing. This method should be overridden if a refresh operation is supported by the implementation.
    
    Throws:
    
    SecurityException - if the caller does not have permission to refresh its Configuration.