/**
* Introspects the given class
*
* @param clazz the class
*/
private void introspect(Class<?> clazz) {
// get the target clazz as it could potentially have been enhanced by CGLIB etc.
clazz = getTargetClass(clazz);
ObjectHelper.notNull(clazz, "clazz", this);
LOG.trace("Introspecting class: {}", clazz);
// if the class is not public then fallback and use interface methods if possible
// this allow Camel to invoke private beans which implements interfaces
List<Method> methods = Arrays.asList(clazz.getDeclaredMethods());
if (!Modifier.isPublic(clazz.getModifiers())) {
LOG.trace("Preferring interface methods as class: {} is not public accessible", clazz);
List<Method> interfaceMethods = getInterfaceMethods(clazz);
// still keep non-accessible class methods to provide more specific Exception if method is
// non-accessible
interfaceMethods.addAll(methods);
methods = interfaceMethods;
}
for (Method method : methods) {
boolean valid = isValidMethod(clazz, method);
LOG.trace("Method: {} is valid: {}", method, valid);
if (valid) {
introspect(clazz, method);
}
}
Class<?> superclass = clazz.getSuperclass();
if (superclass != null && !superclass.equals(Object.class)) {
introspect(superclass);
}
}
/**
* Introspects the given class
*
* @param clazz the class
*/
private void introspect(Class<?> clazz) {
// get the target clazz as it could potentially have been enhanced by CGLIB etc.
clazz = getTargetClass(clazz);
ObjectHelper.notNull(clazz, "clazz", this);
LOG.trace("Introspecting class: {}", clazz);
// does the class have any public constructors?
publicConstructors = clazz.getConstructors().length > 0;
// favor declared methods, and then filter out duplicate interface methods
List<Method> methods;
if (Modifier.isPublic(clazz.getModifiers())) {
LOG.trace("Preferring class methods as class: {} is public accessible", clazz);
methods = new ArrayList<Method>(Arrays.asList(clazz.getDeclaredMethods()));
} else {
LOG.trace("Preferring interface methods as class: {} is not public accessible", clazz);
methods = getInterfaceMethods(clazz);
// and then we must add its declared methods as well
List<Method> extraMethods = Arrays.asList(clazz.getDeclaredMethods());
methods.addAll(extraMethods);
}
Set<Method> overrides = new HashSet<Method>();
Set<Method> bridges = new HashSet<Method>();
// do not remove duplicates form class from the Java itself as they have some "duplicates" we
// need
boolean javaClass = clazz.getName().startsWith("java.") || clazz.getName().startsWith("javax.");
if (!javaClass) {
// it may have duplicate methods already, even from declared or from interfaces + declared
for (Method source : methods) {
for (Method target : methods) {
// skip ourselves
if (ObjectHelper.isOverridingMethod(source, target, true)) {
continue;
}
// skip duplicates which may be assign compatible (favor keep first added method when
// duplicate)
if (ObjectHelper.isOverridingMethod(source, target, false)) {
overrides.add(target);
}
}
}
methods.removeAll(overrides);
overrides.clear();
}
// if we are a public class, then add non duplicate interface classes also
if (Modifier.isPublic(clazz.getModifiers())) {
// add additional interface methods
List<Method> extraMethods = getInterfaceMethods(clazz);
for (Method target : extraMethods) {
for (Method source : methods) {
if (ObjectHelper.isOverridingMethod(source, target, false)) {
overrides.add(target);
}
}
}
// remove all the overrides methods
extraMethods.removeAll(overrides);
methods.addAll(extraMethods);
}
// now introspect the methods and filter non valid methods
for (Method method : methods) {
boolean valid = isValidMethod(clazz, method);
LOG.trace("Method: {} is valid: {}", method, valid);
if (valid) {
introspect(clazz, method);
}
}
Class<?> superclass = clazz.getSuperclass();
if (superclass != null && !superclass.equals(Object.class)) {
introspect(superclass);
}
}
public BeanInfo(
CamelContext camelContext,
Class<?> type,
Method explicitMethod,
ParameterMappingStrategy strategy) {
this.camelContext = camelContext;
this.type = type;
this.strategy = strategy;
this.component = camelContext.getComponent("bean", BeanComponent.class);
final BeanInfoCacheKey key = new BeanInfoCacheKey(type, explicitMethod);
// lookup if we have a bean info cache
BeanInfo beanInfo = component.getBeanInfoFromCache(key);
if (beanInfo != null) {
// copy the values from the cache we need
defaultMethod = beanInfo.defaultMethod;
operations = beanInfo.operations;
operationsWithBody = beanInfo.operationsWithBody;
operationsWithNoBody = beanInfo.operationsWithNoBody;
operationsWithCustomAnnotation = beanInfo.operationsWithCustomAnnotation;
operationsWithHandlerAnnotation = beanInfo.operationsWithHandlerAnnotation;
methodMap = beanInfo.methodMap;
publicConstructors = beanInfo.publicConstructors;
return;
}
if (explicitMethod != null) {
// must be a valid method
if (!isValidMethod(type, explicitMethod)) {
throw new IllegalArgumentException(
"The method "
+ explicitMethod
+ " is not valid (for example the method must be public)");
}
introspect(getType(), explicitMethod);
} else {
introspect(getType());
}
// if there are only 1 method with 1 operation then select it as a default/fallback method
MethodInfo method = null;
if (operations.size() == 1) {
List<MethodInfo> methods = operations.values().iterator().next();
if (methods.size() == 1) {
method = methods.get(0);
}
}
defaultMethod = method;
// mark the operations lists as unmodifiable, as they should not change during runtime
// to keep this code thread safe
operations = Collections.unmodifiableMap(operations);
operationsWithBody = Collections.unmodifiableList(operationsWithBody);
operationsWithNoBody = Collections.unmodifiableList(operationsWithNoBody);
operationsWithCustomAnnotation = Collections.unmodifiableList(operationsWithCustomAnnotation);
operationsWithHandlerAnnotation = Collections.unmodifiableList(operationsWithHandlerAnnotation);
methodMap = Collections.unmodifiableMap(methodMap);
// add new bean info to cache
component.addBeanInfoToCache(key, this);
}