private boolean isCriteriaMatching(NotificationSubscriber notifSubscriber, ProductItem item) {
List<Configuration> configurations = notifSubscriber.getCriteria();
for (int i = 0; i < configurations.size(); i++) {
Configuration config = configurations.get(i);
String condition = config.getCondition();
String attributeName = config.getAttributeName();
String atrributeValue = config.getAttributeValue();
if (attributeName.equalsIgnoreCase("listPrice")) {
String itemListPrice = item.getList_price();
if (itemListPrice == null) return false;
if (condition.equals("=")) {
return (Integer.parseInt(itemListPrice) == Integer.parseInt(atrributeValue));
} else if (condition.equals(">=")) {
return (Integer.parseInt(itemListPrice) >= Integer.parseInt(atrributeValue));
} else if (condition.equals("<=")) {
return (Integer.parseInt(itemListPrice) <= Integer.parseInt(atrributeValue));
}
} else if (attributeName.equalsIgnoreCase("releaseDate")) {
String itemReleaseDate = item.getRelease_date();
if (itemReleaseDate == null) return false;
DateFormat formatter = new SimpleDateFormat("dd-MM-yy");
} else if (attributeName.equalsIgnoreCase("title")) {
String itemTitle = item.getTitle();
if (itemTitle == null) return false;
if (condition.equals("=") && !itemTitle.equals(atrributeValue)) {
return false;
} else if (condition.equals("!=") && itemTitle.equals(atrributeValue)) {
return false;
}
} else if (attributeName.equalsIgnoreCase("authors")) {
String itemAuthor = item.getAuthor();
if (itemAuthor == null) return false;
if (condition.equals("=") && !itemAuthor.equals(atrributeValue)) {
return false;
} else if (condition.equals("!=") && itemAuthor.equals(atrributeValue)) {
return false;
}
} else if (attributeName.equalsIgnoreCase("publisher")) {
String itemPublisher = item.getPublisher();
if (itemPublisher == null) return false;
if (condition.equals("=") && !itemPublisher.equals(atrributeValue)) {
return false;
} else if (condition.equals("!=") && itemPublisher.equals(atrributeValue)) {
return false;
}
}
}
return true;
}
private void BuildSubscribersFromXML() {
// Reading XML File
DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = builderFactory.newDocumentBuilder();
Document dom = db.parse(new File(ConfigurationFile));
Element root = dom.getDocumentElement();
NodeList subscribersList = root.getElementsByTagName("Subscriber");
for (int i = 0, listLength = subscribersList.getLength(); i < listLength; i++) {
Element subscriberElement = (Element) subscribersList.item(i);
String subscriberName = subscriberElement.getAttribute("name");
String implClassName = subscriberElement.getAttribute("implclass");
List<Configuration> criteria = new ArrayList<Configuration>();
NodeList configsList = subscriberElement.getElementsByTagName("Configurations");
if (configsList != null && configsList.getLength() > 0) {
Element configsRoot = (Element) configsList.item(0);
NodeList configurations = configsRoot.getElementsByTagName("config");
for (int j = 0; j < configurations.getLength(); j++) {
Element configElement = (Element) configurations.item(j);
String attributeName = configElement.getAttribute("attributename");
String attributeValue = configElement.getAttribute("attributevalue");
String condition = configElement.getAttribute("condition");
Configuration config = new Configuration();
config.setAttributeName(attributeName);
config.setAttributeValue(attributeValue);
config.setCondition(condition);
criteria.add(config);
}
}
NotificationSubscriber notifSubscriber =
new NotificationSubscriber(subscriberName, implClassName, criteria);
addSubscriber(notifSubscriber);
}
System.out.println("Notification Subscriber data built successfully");
} catch (Exception e) {
e.printStackTrace();
}
}