com.optimizely.ab.internal

Class PropertyUtils

java.lang.Object

com.optimizely.ab.internal.PropertyUtils

public final class PropertyUtils
extends java.lang.Object

PropertyUtils is a utility for pulling parameters from system properties, environment variable or a Optimizely properties file respectively.

Constructor Summary

Constructors

Constructor and Description
PropertyUtils()

Method Summary

Modifier and Type	Method and Description
static void	clear(java.lang.String key) Clears a System property prepended with "optimizely.".
static java.lang.String	get(java.lang.String key) Get a configuration value from one of the supported locations.
static java.lang.String	get(java.lang.String key, java.lang.String dafault) Get a configuration value from one of the supported locations.
static <T> T	getEnum(java.lang.String key, java.lang.Class<T> clazz) Get a configuration value as Enum from one of the supported locations.
static <T> T	getEnum(java.lang.String key, java.lang.Class<T> clazz, T dafault) Get a configuration value as Enum from one of the supported locations.
static java.lang.Integer	getInteger(java.lang.String key) Get a configuration value as Integer from one of the supported locations.
static java.lang.Integer	getInteger(java.lang.String key, java.lang.Integer dafault) Get a configuration value as Integer from one of the supported locations.
static java.lang.Long	getLong(java.lang.String key) Get a configuration value as Long from one of the supported locations.
static java.lang.Long	getLong(java.lang.String key, java.lang.Long dafault) Get a configuration value as Long from one of the supported locations.
static void	set(java.lang.String key, java.lang.String value) Sets a System property prepended with "optimizely.".

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertyUtils

public PropertyUtils()

Method Detail

clear

public static void clear(java.lang.String key)

Clears a System property prepended with "optimizely.".

Parameters:

key - The configuration key

set

public static void set(java.lang.String key,
                       java.lang.String value)

Sets a System property prepended with "optimizely.".

Parameters:

key - The configuration key

value - The String value

get

public static java.lang.String get(java.lang.String key)

Get a configuration value from one of the supported locations.

• System Properties - Key is prepended with "optimizely."
• Environment variables - Key is prepended with "optimizely.", uppercased and "." are replaced with "_".
• Optimizely Properties - Key is sourced as-is.

Parameters:

key - The configuration key

Returns:

The String value

get

public static java.lang.String get(java.lang.String key,
                                   java.lang.String dafault)

Get a configuration value from one of the supported locations. If a value cannot be found, then the default is returned.

• System Properties - Key is prepended with "optimizely."
• Environment variables - Key is prepended with "optimizely.", upper cased and "."s are replaced with "_"s.
• Optimizely Properties - Key is sourced as-is.

Parameters:

key - The configuration key

dafault - The default value

Returns:

The String value

getLong

public static java.lang.Long getLong(java.lang.String key)

Get a configuration value as Long from one of the supported locations. If a value cannot be found, or if the value is not a valid number, then null is returned.

• System Properties - Key is prepended with "optimizely."
• Environment variables - Key is prepended with "optimizely.", upper cased and "."s are replaced with "_"s.
• Optimizely Properties - Key is sourced as-is.

Parameters:

key - The configuration key

Returns:

The integer value

getLong

public static java.lang.Long getLong(java.lang.String key,
                                     java.lang.Long dafault)

Get a configuration value as Long from one of the supported locations. If a value cannot be found, then the default is returned.

• System Properties - Key is prepended with "optimizely."
• Environment variables - Key is prepended with "optimizely.", upper cased and "."s are replaced with "_"s.
• Optimizely Properties - Key is sourced as-is.

Parameters:

key - The configuration key

dafault - The default value

Returns:

The long value

getInteger

public static java.lang.Integer getInteger(java.lang.String key)

Get a configuration value as Integer from one of the supported locations. If a value cannot be found, or if * the value is not a valid number, then null is returned.

• System Properties - Key is prepended with "optimizely."
• Environment variables - Key is prepended with "optimizely.", upper cased and "."s are replaced with "_"s.
• Optimizely Properties - Key is sourced as-is.

Parameters:

key - The configuration key

Returns:

The integer value

getInteger

public static java.lang.Integer getInteger(java.lang.String key,
                                           java.lang.Integer dafault)

Get a configuration value as Integer from one of the supported locations. If a value cannot be found, or if the value is not a valid number, then the default is returned.

• System Properties - Key is prepended with "optimizely."
• Environment variables - Key is prepended with "optimizely.", upper cased and "."s are replaced with "_"s.
• Optimizely Properties - Key is sourced as-is.

Parameters:

key - The configuration key

dafault - The default value

Returns:

The integer value

getEnum

public static <T> T getEnum(java.lang.String key,
                            java.lang.Class<T> clazz)

Get a configuration value as Enum from one of the supported locations. Of not a valid enum value, then null is returned.

• System Properties - Key is prepended with "optimizely."
• Environment variables - Key is prepended with "optimizely.", upper cased and "."s are replaced with "_"s.
• Optimizely Properties - Key is sourced as-is.

Type Parameters:

T - This is the type parameter

Parameters:

key - The configuration key

clazz - The value class

Returns:

The value

getEnum

public static <T> T getEnum(java.lang.String key,
                            java.lang.Class<T> clazz,
                            T dafault)

Get a configuration value as Enum from one of the supported locations. If a value cannot be found, or if it is not a valid enum value, then the default is returned.

• System Properties - Key is prepended with "optimizely."
• Environment variables - Key is prepended with "optimizely.", upper cased and "."s are replaced with "_"s.
• Optimizely Properties - Key is sourced as-is.

Type Parameters:

T - This is the type parameter

Parameters:

key - The configuration key

clazz - The value class

dafault - The default value

Returns:

The value