ConfigProvider (Eclipse MicroProfile 2.0)

java.lang.Object
- org.eclipse.microprofile.config.ConfigProvider

```
public final class ConfigProvider
extends java.lang.Object
```
This is the central class to access a Config. A Config provides access to application Configuration. That might be auto-discovered Config or even manually created one.
The default usage is to use getConfig() to automatically pick up the 'Configuration' for the Thread Context ClassLoader (See Thread.getContextClassLoader()).
A 'Configuration' consists of the information collected from the registered ConfigSources. These ConfigSources get sorted according to their ordinal defined via ConfigSource.getOrdinal(). Thus it is possible to overwrite configuration by providing in a ConfigSource with higher importance from outside.
It is also possible to register custom ConfigSources to flexibly extend the configuration mechanism. An example would be to pick up configuration values from a database table. Example usage:
```
 String restUrl = ConfigProvider.getConfig().getValue("myproject.some.remote.service.url", String.class);
 Integer port = ConfigProvider.getConfig().getValue("myproject.some.remote.service.port", Integer.class);
 
```
For more advanced use cases like e.g. registering a manually created Config please see ConfigProviderResolver.registerConfig(Config, ClassLoader) and ConfigProviderResolver.getBuilder().

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static Config`	`getConfig()`	Provide a `Config` based on all `ConfigSources` of the current Thread Context ClassLoader (TCCL)
`static Config`	`getConfig(java.lang.ClassLoader cl)`	Provide a `Config` based on all `ConfigSources` of the specified ClassLoader

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

- Method Detail
  - getConfig
```
public static Config getConfig()
```
    Provide a Config based on all ConfigSources of the current Thread Context ClassLoader (TCCL)
    
    The Config will be stored for future retrieval.
    There is exactly a single Config instance per ClassLoader
    
    Returns:
    
    the config object for the thread context classloader
  - getConfig
```
public static Config getConfig(java.lang.ClassLoader cl)
```
    Provide a Config based on all ConfigSources of the specified ClassLoader
    There is exactly a single Config instance per ClassLoader
    
    Parameters:
    
    cl - the specified classloader
    
    Returns:
    
    the config for the specified classloader