ConfigurationService (LinuxForHealth FHIR Server)

java.lang.Object
- org.linuxforhealth.fhir.config.ConfigurationService

```
public class ConfigurationService
extends java.lang.Object
```
The ConfigurationService is used by the FHIR Server to retrieve JSON-based configuration data.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`ConfigurationService.EnvironmentVariables`	Utility class that allows mocking system environment variables retrieval in test classes (as Mockito disallows mocking static methods of `System`).

Field Summary

Fields
Modifier and Type	Field	Description
`static java.lang.String`	`PROPERTY_GROUP_CLASSNAME`	This property can be used to set the name of the "property group" class that should be instantiated with the top-level JsonObject representing the configuration.

Constructor Summary

Constructors
Constructor Description

ConfigurationService()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static PropertyGroup`	`loadConfiguration(java.io.InputStream is)`	Loads the specified input stream as a JSON file and returns a PropertyGroup containing the contents of the JSON file as the root property group.
`static PropertyGroup`	`loadConfiguration(java.lang.String filename)`	Loads the specified file as a JSON file and returns a PropertyGroup containing the contents of the JSON file as the root property group.

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

- Field Detail
  - PROPERTY_GROUP_CLASSNAME
```
public static final java.lang.String PROPERTY_GROUP_CLASSNAME
```
    This property can be used to set the name of the "property group" class that should be instantiated with the top-level JsonObject representing the configuration.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - ConfigurationService
```
public ConfigurationService()
```
- Method Detail
  - loadConfiguration
```
public static PropertyGroup loadConfiguration(java.lang.String filename)
                                       throws java.lang.Exception
```
    Loads the specified file as a JSON file and returns a PropertyGroup containing the contents of the JSON file as the root property group.
    
    Parameters:
    
    filename - the name of the JSON file to be loaded
    
    Throws:
    
    java.io.FileNotFoundException
    
    java.lang.Exception
  - loadConfiguration
```
public static PropertyGroup loadConfiguration(java.io.InputStream is)
                                       throws java.lang.Exception
```
    Loads the specified input stream as a JSON file and returns a PropertyGroup containing the contents of the JSON file as the root property group.
    
    Parameters:
    
    is - an InputStream to the input JSON file
    
    Throws:
    
    java.lang.Exception