/**
* Binds the extension class to the class that is registered for the give configured for the
* settings key in the settings object.
*
* @param binder the binder to use
* @param settings the settings to look up the key to find the implementation to bind
* @param settingsKey the key to use with the settings
* @param defaultValue the default value if the settings do not contain the key, or null if
* there is no default
* @return the actual bound type key
*/
public String bindType(
Binder binder, Settings settings, String settingsKey, String defaultValue) {
final String type = settings.get(settingsKey, defaultValue);
if (type == null) {
throw new IllegalArgumentException("Missing setting [" + settingsKey + "]");
}
final Class<? extends T> instance = getExtension(type);
if (instance == null) {
throw new IllegalArgumentException("Unknown [" + this.name + "] type [" + type + "]");
}
binder.bind(extensionClass).to(instance).asEagerSingleton();
return type;
}
/** @since 2.0 */
@Override
public void applyTo(Binder binder) {
binder.withSource(getSource()).addError(this);
}
@Override
public void applyTo(Binder binder) {
binder.withSource(getSource()).convertToTypes(typeMatcher, typeConverter);
}
public void applyTo(Binder binder) {
getScoping().applyTo(binder.withSource(getSource()).bind(getKey()).to(getLinkedKey()));
}
/**
* Binds the extension as well as the singletons to the given guice binder.
*
* @param binder the binder to use
*/
public final void bind(Binder binder) {
for (Class<?> c : singletons) {
binder.bind(c).asEagerSingleton();
}
bindExtensions(binder);
}