@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;
}
@GET
@Path("{route_id}")
@Produces(MediaType.APPLICATION_JSON)
public String getPlace(@PathParam("route_id") String routeID) {
JSONObject reply = new JSONObject();
try {
syncCache.setErrorHandler(ErrorHandlers.getConsistentLogAndContinue(Level.INFO));
Entity result = (Entity) syncCache.get(routeID);
if (result != null)
return reply
.append("status", "OK")
.append("message", "Found in memcache.")
.append("Route Object", result)
.toString();
return reply.append("status", "fail").append("message", "Not found in memcache.").toString();
} catch (Exception e) {
return new JSONObject()
.append("status", "fail")
.append("message", "Route object with ID " + routeID + " not found.")
.toString();
}
}
@POST
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public String addRoute(Route route, @Context HttpServletResponse servletResponse)
throws IOException {
try {
Entity routeEntity = new Entity("Route");
routeEntity.setProperty("originPlaceID", route.getOrigin().getGooglePlaceId());
routeEntity.setProperty("destinationPlaceID", route.getDestination().getGooglePlaceId());
routeEntity.setProperty("duration", route.getDuration());
routeEntity.setProperty("distance", route.getDistance());
routeEntity.setProperty("origin", route.getOrigin().getAddress());
routeEntity.setProperty("destination", route.getDestination().getAddress());
Text mapJsonAsText = route.getMapJsonAsText();
routeEntity.setProperty("routeJSON", mapJsonAsText);
syncCache.setErrorHandler(ErrorHandlers.getConsistentLogAndContinue(Level.INFO));
String cacheKey = "route-" + key.nextLong();
syncCache.put(cacheKey, routeEntity);
return new JSONObject().append("status", "OK").append("key", cacheKey).toString();
} catch (Exception e) {
return new JSONObject()
.append("status", "fail")
.append("message", "Could not cache object.")
.toString();
}
}
@DELETE
@Path("{route_id}")
@Produces(MediaType.APPLICATION_JSON)
public String deletePlace(@PathParam("route_id") String routeID) {
syncCache.setErrorHandler(ErrorHandlers.getConsistentLogAndContinue(Level.INFO));
JSONObject reply = new JSONObject();
try {
syncCache.delete(routeID);
return reply
.append("status", "OK")
.append("message", "successfully deleted route " + routeID + " from " + "memcache")
.toString();
} catch (Exception e) {
return new JSONObject().append("status", "fail").append("message", e.getMessage()).toString();
}
}
public class ErrorDialog extends JDialog {
private static final long serialVersionUID = 1L;
public static final int DEFAULT_FIRST_COMUMN_WIDTH = 300;
public static void displayErrorDialog(List<Object> errors, @CheckForNull Window frame) {
ErrorDialog errorDialog = new ErrorDialog(frame);
errorDialog.setErrors(errors);
errorDialog.setVisible(true);
}
List<?> errors = Collections.emptyList();
final JTable table;
final ErrorTableModel model = new ErrorTableModel();
{
table = new JTable();
model.setErrors(errors);
table.setModel(model);
TableColumn detailsColumn = table.getColumnModel().getColumn(1);
detailsColumn.setCellEditor(new DetailRenderer());
detailsColumn.setCellRenderer(new DetailRenderer());
detailsColumn.setPreferredWidth(15);
table.getColumnModel().getColumn(0).setPreferredWidth(DEFAULT_FIRST_COMUMN_WIDTH);
}
final JButton closeButton;
{
closeButton = new JButton("Zamknij");
closeButton.addActionListener(new HideWindowActionListener(this));
}
private final ClassHandler<Formatter> detailsHandlers = ErrorHandlers.createLongHandlers();
public ErrorDialog() {
super();
initialize();
}
public ErrorDialog(@CheckForNull Frame owner, boolean modal) {
super(owner, modal);
initialize();
}
public ErrorDialog(@CheckForNull Window owner) {
super(owner);
initialize();
}
private void initialize() {
setLayout(new MigLayout("fillx", "[fill]"));
add(new JScrollPane(table));
add(closeButton, "tag finished, dock south");
pack();
initLocation(this);
}
private class DetailRenderer extends AbstractCellEditor
implements TableCellRenderer, TableCellEditor {
private static final long serialVersionUID = 1L;
Object value;
final JButton rendererEditor;
final ErrorDetailsDialog dialog = new ErrorDetailsDialog(ErrorDialog.this);
{
rendererEditor = new JButton(MainIconManager.getIcon("error_go"));
rendererEditor.setBorderPainted(false);
rendererEditor.setContentAreaFilled(false);
rendererEditor.addActionListener(
new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dialog.setText(detailsHandlers.getHandler(value).getMessage(value));
dialog.setVisible(true);
}
});
}
@Override
public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
return rendererEditor;
}
@Override
public Object getCellEditorValue() {
return value;
}
@Override
public Component getTableCellEditorComponent(
JTable table, Object value, boolean isSelected, int row, int column) {
this.value = value;
return rendererEditor;
}
}
public void setErrors(List<?> errors) {
this.errors = errors;
model.setErrors(errors);
}
@Override
public void setVisible(boolean b) {
pack();
super.setVisible(b);
}
}
@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
resp.setContentType("text/html");
resp.getWriter().println("<html><body>");
String keyname = req.getParameter("keyname");
String value = req.getParameter("value");
DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
// Using the synchronous cache.
MemcacheService syncCache = MemcacheServiceFactory.getMemcacheService();
syncCache.setErrorHandler(ErrorHandlers.getConsistentLogAndContinue(Level.INFO));
// display every element of kind TaskData for /datastore
if (req.getParameterMap().isEmpty()) {
// querying from datastore
resp.getWriter().println("<h3>Datastore results:</h3>");
List<String> listOfKeys = new ArrayList<String>();
Query q = new Query("TaskData");
PreparedQuery pq = datastore.prepare(q);
for (Entity result : pq.asIterable()) {
String datastore_key = result.getKey().getName();
String taskData_value = (String) result.getProperty("value");
Date taskData_date = (Date) result.getProperty("date");
resp.getWriter()
.println(
"<p>keyname = "
+ datastore_key
+ " value = "
+ taskData_value
+ " date = "
+ taskData_date.toString()
+ "</p>");
listOfKeys.add(datastore_key);
}
// check which of the keys exist in memcache
String memcache_value;
resp.getWriter().println("<h3>Memcache results:</h3>");
for (String datastore_key : listOfKeys) {
memcache_value = (String) syncCache.get(datastore_key);
if (memcache_value != null) {
// String decoded = new String(memcache_value, "UTF-8");
resp.getWriter()
.println("<p>keyname = " + datastore_key + " value = " + memcache_value + "</p>");
}
}
}
// display element of kind TaskData with key=keyname
else if (keyname != null && value == null) {
// first check in the cache
String memcache_value = (String) syncCache.get(keyname); // Read from cache.
// Get value from datastore
Key task_key = KeyFactory.createKey("TaskData", keyname);
try {
Entity tne = datastore.get(task_key);
if (memcache_value == null) {
resp.getWriter().println("<h2>Datastore</h2>");
} else {
resp.getWriter().println("<h2>Both</h2>");
}
} catch (EntityNotFoundException e) {
resp.getWriter().println("<h2>Neither</h2>");
}
}
// store element of kind TaskData with key=keyname and value=value
else if (keyname != null && value != null) {
Entity tne = new Entity("TaskData", keyname);
tne.setProperty("value", value);
tne.setProperty("date", new Date());
datastore.put(tne);
syncCache.put(keyname, value); // Populate cache.
resp.getWriter()
.println("<h2>Stored " + keyname + " and " + value + " in Datastore and Memcache</h2>");
} else {
resp.getWriter().println("<h2>You entered wrong query parameters</h2>");
}
/*
Entity tne = new Entity("TaskData", "Person");
alice.setProperty("gender", "female");
alice.setProperty("age", 20);
*/
resp.getWriter().println("</body></html>");
}
