/**
* Applies a config entry to a component. If the entry is not valid, the method prints an
* exception and returns false.
*
* @param <T> Type of the config option.
* @param component A component object.
* @param entry The configuration entry to set.
* @return True if the config entry could be applied succesfully, otherwise false.
*/
public <T> boolean applyConfigEntry(AbstractComponent component, ConfigEntry<T> entry) {
try {
component.applyConfigEntry(entry);
pool.addConfigEntry(component, entry, true);
return true;
} catch (InvalidConfigOptionValueException e) {
pool.addConfigEntry(component, entry, false);
e.printStackTrace();
return false;
}
}
/**
* Convenience method for testing purposes. If you know that the type of the value is correct, it
* is preferable to create a ConfigEntry object and apply it to the component (no type checking
* necessary).
*
* @param <T> Type of the config option (Integer, String etc.).
* @param component A component.
* @param optionName The name of the config option.
* @param value The value of the config option.
*/
@SuppressWarnings("unchecked")
public <T> void applyConfigEntry(AbstractComponent component, String optionName, T value) {
logger.trace(component);
logger.trace(optionName);
logger.trace(value);
logger.trace(value.getClass());
// first we look whether the component is registered
if (components.contains(component.getClass())) {
// look for a config option with the specified name
ConfigOption<?> option =
(ConfigOption<?>) componentOptionsByName.get(component.getClass()).get(optionName);
if (option != null) {
// check whether the given object has the correct type
if (!option.checkType(value)) {
System.out.println(
"Warning: value "
+ value
+ " is not valid for option "
+ optionName
+ " in component "
+ component
+ ". It does not have the correct type.");
return;
}
// we have checked the type, hence it should now be safe to
// typecast and
// create a ConfigEntry object
ConfigEntry<T> entry = null;
try {
entry = new ConfigEntry<T>((ConfigOption<T>) option, value);
component.applyConfigEntry(entry);
pool.addConfigEntry(component, entry, true);
} catch (InvalidConfigOptionValueException e) {
pool.addConfigEntry(component, entry, false);
System.out.println(
"Warning: value "
+ value
+ " is not valid for option "
+ optionName
+ " in component "
+ component);
}
} else {
logger.warn("Warning: undefined option " + optionName + " in component " + component);
}
} else {
logger.warn("Warning: unregistered component " + component);
}
}