@PUT
@Consumes(MediaType.APPLICATION_XML)
public Response putTaskData(String value) {
Response res = null;
// add your code here
// first check if the Entity exists in the datastore
DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
MemcacheService syncCache = MemcacheServiceFactory.getMemcacheService();
syncCache.setErrorHandler(ErrorHandlers.getConsistentLogAndContinue(Level.INFO));
Key entKey = KeyFactory.createKey("TaskData", keyname);
Date date = new Date();
try {
// if it is, signal that we updated the entity
Entity ts = datastore.get(entKey);
ts.setProperty("value", value);
ts.setProperty("date", date);
datastore.put(ts);
res = Response.noContent().build();
} catch (EntityNotFoundException e) {
// if it is not, create it and
// signal that we created the entity in the datastore
Entity taskdata = new Entity("TaskData", keyname);
taskdata.setProperty("value", value);
taskdata.setProperty("date", date);
datastore.put(taskdata);
res = Response.created(uriInfo.getAbsolutePath()).build();
}
TaskData td = new TaskData(keyname, value, date);
syncCache.put(keyname, td);
return res;
}
@DELETE
public void deleteIt() {
// delete an entity from the datastore
// just print a message upon exception (don't throw)
DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
MemcacheService syncCache = MemcacheServiceFactory.getMemcacheService();
if (syncCache.get(keyname) != null) {
syncCache.delete(keyname);
}
Key entKey = KeyFactory.createKey("TaskData", keyname);
try {
Entity ent = datastore.get(entKey);
datastore.delete(entKey);
System.err.println("TaskData deleted in Datastore");
} catch (EntityNotFoundException e) {
System.err.println("TaskData not found in Datastore");
}
}
// for the application
@GET
@Produces({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})
public TaskData getTaskData() {
// same code as above method
DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
MemcacheService syncCache = MemcacheServiceFactory.getMemcacheService();
if (syncCache.get(keyname) != null) {
TaskData ts = (TaskData) syncCache.get(keyname);
return ts;
}
Key entKey = KeyFactory.createKey("TaskData", keyname);
try {
Entity ent = datastore.get(entKey);
TaskData ts =
new TaskData(keyname, (String) ent.getProperty("value"), (Date) ent.getProperty("date"));
return ts;
} catch (EntityNotFoundException e) {
throw new RuntimeException("Get: TaskData with " + keyname + " not found");
}
}
// for the browser
@GET
@Produces(MediaType.TEXT_XML)
public TaskData getTaskDataHTML() {
// add your code here (get Entity from datastore using this.keyname)
// throw new RuntimeException("Get: TaskData with " + keyname + " not found");
// if not found
DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
MemcacheService syncCache = MemcacheServiceFactory.getMemcacheService();
if (syncCache.get(keyname) != null) {
TaskData ts = (TaskData) syncCache.get(keyname);
return ts;
}
Key entKey = KeyFactory.createKey("TaskData", keyname);
try {
Entity ent = datastore.get(entKey);
TaskData ts =
new TaskData(keyname, (String) ent.getProperty("value"), (Date) ent.getProperty("date"));
return ts;
} catch (EntityNotFoundException e) {
throw new RuntimeException("Get: TaskData with " + keyname + " not found");
}
}