com.wutka.util
Class Config

java.lang.Object
  |
  +--com.wutka.util.Config

public class Config

extends java.lang.Object

Provides a central location for getting configuration information. Config includes system properties but changes the keys to be case-insensitive. In addition, you can specify a configFile parameter in the system parameters to read in additional config information. Information specified in the system properties takes priority over config files. This allows you to override parameters in the config file at runtime.

Field Summary

protected static boolean	loadedMainConfig Indicates whether the config class has tried to read in the file named by the configFile system property.
protected static java.util.Properties	props The set of configuration items read in from files.
protected static java.util.Properties	systemProps System properties with caseless keys

Constructor Summary

Config()

Method Summary

protected static void	addProps(java.util.Properties baseProps, java.util.Properties newProps) Adds the properties in newProps to baseProps while converting the keys to be case-free.
static java.lang.String	getConfigItem(java.lang.String key) Retrieves the config item corresponding to the key, or null if there is no config item for the key.
static void	loadConfig(java.lang.String filename) Loads configuration information from the named file.
protected static void	loadMainConfig() Uses the system property configFile as the name of a file to read in config information.

Methods inherited from class java.lang.Object

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

Field Detail

props

protected static java.util.Properties props

The set of configuration items read in from files.

systemProps

protected static java.util.Properties systemProps

System properties with caseless keys

loadedMainConfig

protected static boolean loadedMainConfig

Indicates whether the config class has tried to read in the file named by the configFile system property.

Constructor Detail

Config

public Config()

Method Detail

addProps

protected static void addProps(java.util.Properties baseProps,
                               java.util.Properties newProps)

Adds the properties in newProps to baseProps while converting the keys to be case-free.

Parameters:

baseProps - The current set of properties

newProps - The set of properties to be added to the base set

loadConfig

public static void loadConfig(java.lang.String filename)
                       throws java.io.IOException

Loads configuration information from the named file. The syntax for the config information is the same as for Java properties files.

Parameters:

filename - The name of the file to read config items from

loadMainConfig

protected static void loadMainConfig()

Uses the system property configFile as the name of a file to read in config information.

getConfigItem

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

Retrieves the config item corresponding to the key, or null if there is no config item for the key.

Parameters:

key - The name of the config item to fetch

Returns:

The config item, or null if there is no item