public void copy()

in struts2-uel-plugin/src/main/java/org/apache/struts2/uel/reflection/GenericReflectionProvider.java [378:427]
41 lines of code
15 McCabe index (conditional complexity)

    public void copy(Object from, Object to, Map<String, Object> context,
                     Collection<String> exclusions, Collection<String> inclusions) {
        if (from == null || to == null) {
            LOG.warn("Attempting to copy from or to a null source. This is illegal and is bein skipped. This may be due to an error in an OGNL expression, action chaining, or some other event.");

            return;
        }

        PropertyDescriptor[] fromPds;
        PropertyDescriptor[] toPds;

        try {
            fromPds = getPropertyDescriptors(from);
            toPds = getPropertyDescriptors(to);
        } catch (IntrospectionException e) {
            LOG.error("An error occured", e);

            return;
        }

        Map<String, PropertyDescriptor> toPdHash = new HashMap<String, PropertyDescriptor>();

        for (PropertyDescriptor toPd : toPds) {
            toPdHash.put(toPd.getName(), toPd);
        }

        for (PropertyDescriptor fromPd : fromPds) {
            if (fromPd.getReadMethod() != null) {
                boolean copy = true;
                if (exclusions != null && exclusions.contains(fromPd.getName())) {
                    copy = false;
                } else if (inclusions != null && !inclusions.contains(fromPd.getName())) {
                    copy = false;
                }

                if (copy == true) {
                    PropertyDescriptor toPd = toPdHash.get(fromPd.getName());
                    if ((toPd != null) && (toPd.getWriteMethod() != null)) {
                        try {
                            String expr = fromPd.getName();
                            Object value = getValue(expr, context, from);
                            setValue(expr, context, to, value);
                        } catch (Exception e) {
                            // ignore, this is OK
                        }
                    }
                }
            }
        }
    }