public static synchronized Object invokeSimpleMethod()

in empire-db/src/main/java/org/apache/empire/commons/ClassUtils.java [442:499]
52 lines of code
19 McCabe index (conditional complexity)

    public static synchronized Object invokeSimpleMethod(Class<?> clazz, Object object, String methodName, boolean includePrivateMethods)
    {
        // check arguments
        if (object==null)
            throw new InvalidArgumentException("object", object);
        if (clazz==null || !clazz.isInstance(object))
            throw new InvalidArgumentException("clazz", clazz);
        if (StringUtils.isEmpty(methodName))
            throw new InvalidArgumentException("methodName", methodName);
        // begin
        boolean accessible = true; 
        Method method = null;
        try
        { // find and invoke
            method = (includePrivateMethods ? clazz.getDeclaredMethod(methodName) : clazz.getMethod(methodName));
            accessible = method.isAccessible();
            if (includePrivateMethods && accessible==false)
                method.setAccessible(true);
            // invoke
            return method.invoke(object);
        }
        catch (NoSuchMethodException e)
        {   // No such Method
            if (includePrivateMethods)
            {   // try superclass
                clazz = clazz.getSuperclass();
                if (clazz!=null && !clazz.equals(java.lang.Object.class))
                    return invokeSimpleMethod(clazz, object, methodName, true);
            }
            // not found
            return null;
        }
        catch (SecurityException e)
        {   // Invalid Method definition   
            throw new NotSupportedException(object, methodName, e);
        }
        catch (IllegalAccessException e)
        {   // Invalid Method definition   
            throw new NotSupportedException(object, methodName, e);
        }
        catch (IllegalArgumentException e)
        {   // Invalid Method definition   
            throw new NotSupportedException(object, methodName, e);
        }
        catch (InvocationTargetException e)
        {   // Error inside Method
            Throwable cause = e.getCause();
            if (cause instanceof EmpireException)
                throw (EmpireException)cause;
            // wrap    
            throw new InternalException(cause);
        }
        finally {
            // restore accessible
            if (method!=null && accessible==false)
                method.setAccessible(false);
        }
    }