org.javalite.app_config

Class AppConfig

java.lang.Object

org.javalite.app_config.AppConfig

All Implemented Interfaces:

Map<String,String>

public class AppConfig
extends Object
implements Map<String,String>

Allows configuration of applications that is specific for different deployment environments.

Applications could have environment-specific files, whose names follow this pattern: environment.properties, where environment is a name of a deployment environment, such as "development", "staging", "production", etc. You can also provide a global file, properties from which will be loaded in all environments: global.properties.

In all cases the files need to be on the classpath under directory/package /app_config.

Environment-specific file will have an "environment" part of the file name match to an environment variable called "ACTIVE_ENV". Such configuration is easy to achieve in Unix shell:

export ACTIVE_ENV=test

If environment variable ACTIVE_ENV is missing, it defaults to "development".

You can also provide an environment as a system property active_env. System property overrides environment variable ACTIVE_ENV

Author:

Igor Polevoy

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
AppConfig()

Method Summary

Modifier and Type	Method and Description
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<String,String>>	entrySet()
String	get(Object key)
static Map<String,String>	getAllProperties()
static Property	getAsProperty(String key) Returns property instance corresponding to key.
static String	getProperty(String key) Returns property value for a key.
static void	init()
boolean	isEmpty()
Set<String>	keySet()
static String	p(String key) Gets property, synonym for getProperty(String).
String	put(String key, String value)
void	putAll(Map<? extends String,? extends String> m)
String	remove(Object key)
int	size()
Collection<String>	values()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Detail

AppConfig

public AppConfig()

Method Detail

init

public static void init()

getAsProperty

public static Property getAsProperty(String key)

Returns property instance corresponding to key.

Parameters:

key - key for property.

Returns:

Property for this key.

getProperty

public static String getProperty(String key)

Returns property value for a key.

Parameters:

key - key of property.

Returns:

value for this key, null if not found.

p

public static String p(String key)

Gets property, synonym for getProperty(String).

Parameters:

key - key of property

Returns:

property value

getAllProperties

public static Map<String,String> getAllProperties()

size

public int size()

Specified by:

size in interface Map<String,String>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<String,String>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<String,String>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<String,String>

get

public String get(Object key)

Specified by:

get in interface Map<String,String>

put

public String put(String key,
                  String value)

Specified by:

put in interface Map<String,String>

remove

public String remove(Object key)

Specified by:

remove in interface Map<String,String>

putAll

public void putAll(Map<? extends String,? extends String> m)

Specified by:

putAll in interface Map<String,String>

clear

public void clear()

Specified by:

clear in interface Map<String,String>

keySet

public Set<String> keySet()

Specified by:

keySet in interface Map<String,String>

values

public Collection<String> values()

Specified by:

values in interface Map<String,String>

entrySet

public Set<Map.Entry<String,String>> entrySet()

Specified by:

entrySet in interface Map<String,String>