org.qedeq.kernel.config
Class ConfigAccess

java.lang.Object
  org.qedeq.kernel.config.ConfigAccess

final class ConfigAccess

extends Object

This class reads entries from property files. This class should not be used outside this package.

Version:

$Revision: 1.5 $

Constructor Summary

ConfigAccess(File configFile, String description)
Get access for a config file.

Method Summary

String	getConfigDescription() Get description for config file.
File	getConfigFile() Get config file.
int	getInteger(String name) Get int property.
int	getInteger(String name, int defaultValue) Return int property.
String	getString(String name) Return String property.
String	getString(String name, String defaultValue) Return String property.
String[]	getStringProperties(String namePrefix) Get list of String properties with certain prefix.
void	removeProperties(String namePrefix) Remove properties with certain prefix.
void	removeProperty(String name) Remove property.
void	setInteger(String name, int value) Set int property.
void	setString(String name, String value) Set String property.
void	store() Store properties in config file.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConfigAccess

public ConfigAccess(File configFile,
                    String description)
             throws IOException

Get access for a config file.

Parameters:

configFile - Config file.

description - Config file description

Throws:

IOException - Config file couldn't be loaded.

Method Detail

getConfigFile

public final File getConfigFile()

Get config file.

Returns:

Config file.

getConfigDescription

public final String getConfigDescription()

Get description for config file.

Returns:

Config file description.

store

public final void store()
                 throws IOException

Store properties in config file.

Throws:

IOException - Saving failed.

getString

public final String getString(String name)

Return String property.

Parameters:

name - Get this property.

Returns:

String for looked property. null, if property is missing.

getString

public final String getString(String name,
                              String defaultValue)

Return String property.

Parameters:

name - Look for this String property.

defaultValue - Return this value if property doesn't exist.

Returns:

Value of property. Equal to default value if parameter doesn't exist.

setString

public final void setString(String name,
                            String value)

Set String property.

Parameters:

name - Set this property.

value - Set property to this value.

getStringProperties

public final String[] getStringProperties(String namePrefix)

Get list of String properties with certain prefix. Example:

• module1=bluebird
• module2=tiger
• module3=tulip

The sequence of resulting properties is sorted by their keys.

Parameters:

namePrefix - Prefix of seeked property name.

Returns:

List of key sorted string properties (maybe empty).

setInteger

public final void setInteger(String name,
                             int value)

Set int property.

Parameters:

name - Set this property.

value - Set property to this value.

getInteger

public final int getInteger(String name)

Get int property.

Parameters:

name - look for this property

Returns:

property

Throws:

IllegalArgumentException - Property is no valid int value

NullPointerException - Property doesn't exist

getInteger

public final int getInteger(String name,
                            int defaultValue)

Return int property.

Parameters:

name - Look for this integer property.

defaultValue - Return this value if property doesn't exist.

Returns:

int value of property. Equal to default value if parameter doesn't exist.

Throws:

IllegalArgumentException - Property is no valid int value.

removeProperty

public final void removeProperty(String name)

Remove property.

Parameters:

name - Property to delete.

removeProperties

public final void removeProperties(String namePrefix)

Remove properties with certain prefix. Example:

• module1=bluebird
• module2=tiger
• module3=tulip

Calling with value module deletes all.

Parameters:

namePrefix - Prefix of seeked property name.