/** * Parse a properties sub-packet. If any errors occur while de-serializing Java object properties, * an exception will be printed and not thrown since a thrown exception will shut down the entire * connection. ClassCastExceptions will occur when both the sender and receiver of the packet * don't have identical versions of the same class. * * @param parser the XML parser, positioned at the start of a properties sub-packet. * @return a map of the properties. * @throws Exception if an error occurs while parsing the properties. */ public static Map<String, Object> parseProperties(XmlPullParser parser) throws Exception { Map<String, Object> properties = new HashMap<String, Object>(); while (true) { int eventType = parser.next(); if (eventType == XmlPullParser.START_TAG && parser.getName().equals("property")) { // Parse a property boolean done = false; String name = null; String type = null; String valueText = null; Object value = null; while (!done) { eventType = parser.next(); if (eventType == XmlPullParser.START_TAG) { String elementName = parser.getName(); if (elementName.equals("name")) { name = parser.nextText(); } else if (elementName.equals("value")) { type = parser.getAttributeValue("", "type"); valueText = parser.nextText(); } } else if (eventType == XmlPullParser.END_TAG) { if (parser.getName().equals("property")) { if ("integer".equals(type)) { value = Integer.valueOf(valueText); } else if ("long".equals(type)) { value = Long.valueOf(valueText); } else if ("float".equals(type)) { value = Float.valueOf(valueText); } else if ("double".equals(type)) { value = Double.valueOf(valueText); } else if ("boolean".equals(type)) { value = Boolean.valueOf(valueText); } else if ("string".equals(type)) { value = valueText; } else if ("java-object".equals(type)) { try { byte[] bytes = StringUtils.decodeBase64(valueText); ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bytes)); value = in.readObject(); } catch (Exception e) { LOGGER.log(Level.SEVERE, "", e); } } if (name != null && value != null) { properties.put(name, value); } done = true; } } } } else if (eventType == XmlPullParser.END_TAG) { if (parser.getName().equals("properties")) { break; } } } return properties; }
/** * Decodes a String into an object of the specified type. If the object type is not supported, * null will be returned. * * @param type the type of the property. * @param value the encode String value to decode. * @return the String value decoded into the specified type. * @throws Exception If decoding failed due to an error. */ private static Object decode(Class type, String value) throws Exception { if (type.getName().equals("java.lang.String")) { return value; } if (type.getName().equals("boolean")) { return Boolean.valueOf(value); } if (type.getName().equals("int")) { return Integer.valueOf(value); } if (type.getName().equals("long")) { return Long.valueOf(value); } if (type.getName().equals("float")) { return Float.valueOf(value); } if (type.getName().equals("double")) { return Double.valueOf(value); } if (type.getName().equals("java.lang.Class")) { return Class.forName(value); } return null; }
/** * Returns <tt>true</tt> if encryption is required for this session and <tt>false</tt> otherwise. * Default value is <tt>false</tt>. * * @return <tt>true</tt> if encryption is required for this session and <tt>false</tt> otherwise. */ public boolean isRequired() { String required = getAttributeAsString(REQUIRED_ATTR_NAME); return Boolean.valueOf(required) || "1".equals(required); }