public static void serialize()

in core-it-support/core-it-plugins/maven-it-plugin-configuration/src/main/java/org/apache/maven/plugin/coreit/PropertiesUtil.java [91:144]
51 lines of code
15 McCabe index (conditional complexity)

    public static void serialize(Properties props, String key, Object value) {
        if (value != null && value.getClass().isArray()) {
            props.setProperty(key, Integer.toString(Array.getLength(value)));
            for (int i = Array.getLength(value) - 1; i >= 0; i--) {
                serialize(props, key + "." + i, Array.get(value, i));
            }
        } else if (value instanceof Collection) {
            Collection collection = (Collection) value;
            props.setProperty(key, Integer.toString(collection.size()));
            int i = 0;
            for (Iterator it = collection.iterator(); it.hasNext(); i++) {
                serialize(props, key + "." + i, it.next());
            }
        } else if (value instanceof Map) {
            Map map = (Map) value;
            props.setProperty(key, Integer.toString(map.size()));
            int i = 0;
            for (Iterator it = map.keySet().iterator(); it.hasNext(); i++) {
                Object k = it.next();
                Object v = map.get(k);
                serialize(props, key + "." + k, v);
            }
        } else if (value instanceof PlexusConfiguration) {
            PlexusConfiguration config = (PlexusConfiguration) value;

            String val = config.getValue(null);
            if (val != null) {
                props.setProperty(key + ".value", val);
            }

            String[] attributes = config.getAttributeNames();
            props.setProperty(key + ".attributes", Integer.toString(attributes.length));
            for (int i = attributes.length - 1; i >= 0; i--) {
                props.setProperty(key + ".attributes." + attributes[i], config.getAttribute(attributes[i], ""));
            }

            PlexusConfiguration children[] = config.getChildren();
            props.setProperty(key + ".children", Integer.toString(children.length));
            Map<String, Integer> indices = new HashMap<>();
            for (PlexusConfiguration child : children) {
                String name = child.getName();
                Integer index = indices.get(name);
                if (index == null) {
                    index = 0;
                }
                serialize(props, key + ".children." + name + "." + index, child);
                indices.put(name, index + 1);
            }
        } else if (value instanceof Date) {
            props.setProperty(key, new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format((Date) value));
        } else if (value != null) {
            props.setProperty(key, value.toString());
        }
    }