private void startStores(Properties properties) {
String definitionStoreClassName = properties.getProperty(DEFINITION_STORE_CLASS);
String contentStoreClassName = properties.getProperty(CONTENT_STORE_CLASS);
// start definition store
try {
Class<?> definitionStoreClass = Class.forName(definitionStoreClassName);
definitionStore = (MeemStoreDefinitionStore) definitionStoreClass.newInstance();
} catch (Exception e) {
logger.log(Level.INFO, "Exception while starting MeemStoreDefinitionStore", e);
}
if (definitionStore != null) definitionStore.configure(this, properties);
// start content store
try {
Class<?> contentStoreClass = Class.forName(contentStoreClassName);
contentStore = (MeemStoreContentStore) contentStoreClass.newInstance();
} catch (Exception e) {
logger.log(Level.INFO, "Exception while starting MeemStoreContentStore", e);
}
if (contentStore != null) contentStore.configure(this, properties);
}
public void storeMeemContent(MeemPath meemPath, MeemContent meemContent) {
if (DEBUG) {
logger.info("storing meem content: " + meemPath);
}
// only store meemstore paths
if (meemPath.getSpace().equals(Space.MEEMSTORE)) {
contentStore.store(meemPath, meemContent);
String location = meemPath.getLocation();
boolean stored = false;
synchronized (meemPaths) {
if (!meemPaths.containsKey(location)) {
meemPaths.put(location, meemPath);
stored = true;
}
if (stored) {
meemStoreClient.meemStored(meemPath);
}
// TODO[peter] Should this be called if the meem was just stored?
meemContentClient.meemContentChanged(meemPath, meemContent);
}
}
}
public void destroyMeem(MeemPath meemPath) {
String location = meemPath.getLocation();
MeemPath removePath;
synchronized (meemPaths) {
removePath = (MeemPath) meemPaths.remove(location);
if (removePath != null) {
contentStore.remove(meemPath);
definitionStore.remove(meemPath);
meemStoreClient.meemDestroyed(meemPath);
meemDefinitionClient.meemDefinitionChanged(meemPath, null);
meemContentClient.meemContentChanged(meemPath, null);
}
}
}
public void commence() {
Properties properties = System.getProperties();
// TODO put this in a commence() method, and close stores on conclude().
startStores(properties);
// grab the content and definition paths
// it is possible to have a content stored without a definition and vice versa
// -mg- not sure this is really necessary. should just hand off to store to try and
// load and fail silently if path cannot be found
HashSet<MeemPath> paths = new HashSet<MeemPath>();
paths.addAll(contentStore.getAllPaths());
paths.addAll(definitionStore.getAllPaths());
for (MeemPath meemPath : paths) {
meemPaths.put(meemPath.getLocation(), meemPath);
}
}