/**
* This extracts and instantiates the implementation class from a {@code ClassBridge} annotation.
*
* @param cb the class bridge annotation
* @param clazz the {@code Class} on which the annotation is defined on
* @return Returns the specified {@code FieldBridge} instance
*/
public FieldBridge extractType(ClassBridge cb, Class<?> clazz) {
FieldBridge bridge = null;
Class<?> bridgeType = null;
if (cb != null) {
bridgeType = cb.impl();
if (bridgeType != null) {
try {
Object instance = bridgeType.newInstance();
if (FieldBridge.class.isAssignableFrom(bridgeType)) {
bridge = (FieldBridge) instance;
} else if (org.hibernate.search.bridge.TwoWayStringBridge.class.isAssignableFrom(
bridgeType)) {
bridge =
new TwoWayString2FieldBridgeAdaptor(
(org.hibernate.search.bridge.TwoWayStringBridge) instance);
} else if (org.hibernate.search.bridge.StringBridge.class.isAssignableFrom(bridgeType)) {
bridge =
new String2FieldBridgeAdaptor((org.hibernate.search.bridge.StringBridge) instance);
} else {
throw LOG.noFieldBridgeInterfaceImplementedByClassBridge(bridgeType.getName());
}
} catch (Exception e) {
throw LOG.cannotInstantiateClassBridgeOfType(bridgeType.getName(), clazz.getName(), e);
}
}
}
if (bridge == null) {
throw LOG.unableToDetermineClassBridge(ClassBridge.class.getName());
}
populateReturnType(clazz, bridgeType, bridge);
return bridge;
}
