com.yahoo.bard.webservice.config

Class LayeredFileSystemConfig

java.lang.Object

com.yahoo.bard.webservice.config.LayeredFileSystemConfig

All Implemented Interfaces:

SystemConfig

public class LayeredFileSystemConfig
extends Object
implements SystemConfig

A class to hold and fetch configuration values from the environment, the system, user, application, module and library configurations.

LayeredFileSystemConfig uses a layered model with the highest priority granted to environment variables, followed by system properties, then user configuration, application configuration, module configurations and then core library default configuration.

LayeredFileSystemConfig also uses a Properties resource to allow runtime override of configured behavior.

Constructor Summary

Constructors

Constructor and Description
LayeredFileSystemConfig() Build a Layered File System Configuration, using first the environment and an application configuration source, then drill down into available modules and load each of them in package dependency order.

Method Summary

Modifier and Type	Method and Description
org.apache.commons.configuration.CompositeConfiguration	getMasterConfiguration() Get the internal System Configuration instance.
Properties	getRuntimeProperties() The properties file used to hold modified SystemConfiguration values.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.yahoo.bard.webservice.config.SystemConfig

clearProperty, getBooleanProperty, getBooleanProperty, getDoubleProperty, getDoubleProperty, getFloatProperty, getFloatProperty, getIntProperty, getIntProperty, getListProperty, getListProperty, getLongProperty, getLongProperty, getPackageVariableName, getStringProperty, getStringProperty, resetProperty, setProperty

Constructor Detail

LayeredFileSystemConfig

public LayeredFileSystemConfig()

Build a Layered File System Configuration, using first the environment and an application configuration source, then drill down into available modules and load each of them in package dependency order.

Method Detail

getMasterConfiguration

public org.apache.commons.configuration.CompositeConfiguration getMasterConfiguration()

Description copied from interface: SystemConfig

Get the internal System Configuration instance. This method is intended primary for interface support and not for client interactions.

Specified by:

getMasterConfiguration in interface SystemConfig

Returns:

The composite configuration which backs this System Configuration

getRuntimeProperties

public Properties getRuntimeProperties()

Description copied from interface: SystemConfig

The properties file used to hold modified SystemConfiguration values. This method is intended primary for interface support and not for client interactions.

Specified by:

getRuntimeProperties in interface SystemConfig

Returns:

A properties object which acts as a runtime mask against other configuration properties