/**
* Save the given Configuration to the persistent storage.
*
* <p>Only {@link ProgrammerConfig} objects obtained with the {@link #getConfigEditable(String)}
* method should be passed to this method, however this is currently not enforced.
*
* @param config <code>ProgrammerConfig</code> to be saved.
* @throws BackingStoreException If this configuration cannot be written to the preference storage
* area.
*/
public void saveConfig(ProgrammerConfig config) throws BackingStoreException {
// save the config
config.save(getConfigPreferences(config));
// If the config is already in the cache update the cached config to the
// new values
if (fConfigsCache.containsKey(config.getId())) {
ProgrammerConfig oldconfig = fConfigsCache.get(config.getId());
oldconfig.loadFromConfig(config);
} else {
// Add the new config to the cache
fConfigsCache.put(config.getId(), config);
}
// Remove from the pending id list (if it is a newly created config)
fPendingIds.remove(config.getId());
}
/**
* Deletes the given configuration from the preference storage area.
*
* <p>Note: This Object is still valid and further calls to {@link #saveConfig(ProgrammerConfig)}
* will add this configuration back to the preference storage.
*
* @throws BackingStoreException
*/
public void deleteConfig(ProgrammerConfig config) throws BackingStoreException {
String id = config.getId();
// If the config is in the cache, remove it from the cache
if (fConfigsCache.containsKey(id)) {
fConfigsCache.remove(id);
}
// Remove the Preference node for the config and flush the preferences
// If the node does not exist do nothing - no need to create the node
// just to remove it again
if (fPreferences.nodeExists(id)) {
Preferences cfgnode = fPreferences.node(id);
cfgnode.removeNode();
fPreferences.flush();
}
}
/**
* Get the preference node for the given configuration
*
* @param config
* @return
*/
private Preferences getConfigPreferences(ProgrammerConfig config) {
String id = config.getId();
return fPreferences.node(id);
}
