public static Bean getProperty()

in src/main/java/org/apache/bsf/util/ReflectionUtils.java [324:361]
31 lines of code
6 McCabe index (conditional complexity)

    public static Bean getProperty(final Object target, final String propName, final Integer index)
            throws IntrospectionException, IllegalArgumentException, IllegalAccessException, InvocationTargetException {
        // find the property descriptor
        final BeanInfo bi = Introspector.getBeanInfo(target.getClass());
        final PropertyDescriptor pd = (PropertyDescriptor) findFeatureByName("property", propName, bi.getPropertyDescriptors());
        if (pd == null) {
            throw new IllegalArgumentException("property '" + propName + "' is " + "unknown for '" + target + "'");
        }

        // get read method and type of property
        Method rm;
        Class propType;
        if (index != null) {
            // if index != null, then property is indexed - pd better be so too
            if (!(pd instanceof IndexedPropertyDescriptor)) {
                throw new IllegalArgumentException("attempt to get non-indexed " + "property '" + propName + "' as being indexed");
            }
            final IndexedPropertyDescriptor ipd = (IndexedPropertyDescriptor) pd;
            rm = ipd.getIndexedReadMethod();
            propType = ipd.getIndexedPropertyType();
        } else {
            rm = pd.getReadMethod();
            propType = pd.getPropertyType();
        }

        if (rm == null) {
            throw new IllegalArgumentException("property '" + propName + "' is not readable");
        }

        // now get the value
        Object propVal = null;
        if (index != null) {
            propVal = rm.invoke(target, new Object[] { index });
        } else {
            propVal = rm.invoke(target, null);
        }
        return new Bean(propType, propVal);
    }