org.apache.tamaya.events.folderobserver

Class ObservingPropertySourceProvider

java.lang.Object

org.apache.tamaya.events.folderobserver.ObservingPropertySourceProvider

All Implemented Interfaces:

PropertySourceProvider

public class ObservingPropertySourceProvider
extends Object
implements PropertySourceProvider

This implementation runs in a folder taking up all files compatible with the given ConfigurationFormats. When a file is added, deleted or modified the PropertySourceProvider will adapt the changes automatically and trigger according PropertySourceChange events. The default folder is META-INF/config, but you can change it via an absolute path in the "-Dtamaya.configdir" parameter.

Field Summary

Fields inherited from interface org.apache.tamaya.spi.PropertySourceProvider

EMPTY

Constructor Summary

Constructors

Constructor and Description
ObservingPropertySourceProvider(Path directory) Constructorm using an explicit directory, ignoring all kind of configuration, if set.

Method Summary

Modifier and Type	Method and Description
void	directoryChanged(Path directory) Called when a file has been modified.
Collection<PropertySource>	getPropertySources()
protected Collection<PropertySource>	getPropertySources(Path file) Read property sources from the given file.
protected static Map<String,String>	readProperties(Path file) Load a single file.

Methods inherited from class java.lang.Object

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

Constructor Detail

ObservingPropertySourceProvider

public ObservingPropertySourceProvider(Path directory)

Constructorm using an explicit directory, ignoring all kind of configuration, if set.

Parameters:

directory - the target directory. If null, the default configuration and system property are used.

Method Detail

getPropertySources

protected Collection<PropertySource> getPropertySources(Path file)

Read property sources from the given file.

Parameters:

file - source of the property sources.

Returns:

property sources from the given file.

readProperties

protected static Map<String,String> readProperties(Path file)

Load a single file.

Parameters:

file - the file, not null.

Returns:

properties as read from the given file.

directoryChanged

public void directoryChanged(Path directory)

Called when a file has been modified.

Parameters:

directory - the file path, not null.

getPropertySources

public Collection<PropertySource> getPropertySources()

Specified by:

getPropertySources in interface PropertySourceProvider

Returns:

For each e.g. property file, we return a single PropertySource or an empty list if no PropertySource exists.