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• How to achieve Bing maps like InfoWindow in Google Maps?

  - by BillB

  I'm using Google Maps v3. I really like the InfoWindows found in Bing, as opposed to Google. Screenshots & functionality found here comparing the two: http://www.axismaps.com/blog/2009/07/data-probing-and-info-window-design-on-web-based-maps/ Question: How can I replicate Bing like InfoWindows while using Google Maps v3? UPDATE: To be more specific, what I like about Bing's InfoWindows include: - The pointer dynamically changes sides from left/right/bottom/top, as opposed to Google limited to only have the InfoWindow pointer on the bottom - Bing's InfoWindows use less space - You can configure Bing's InfoWindows to pop up outside of the map bounders so that you don't have to autopan the map to display the marker's InfoWindow

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• Datastore performance, my code or the datastore latency

  - by fredrik

  I had for the last month a bit of a problem with a quite basic datastore query. It involves 2 db.Models with one referring to the other with a db.ReferenceProperty. The problem is that according to the admin logs the request takes about 2-4 seconds to complete. I strip it down to a bare form and a list to display the results. The put works fine, but the get accumulates (in my opinion) way to much cpu time. #The get look like this: outputData['items'] = {} labelsData = Label.all() for label in labelsData: labelItem = label.item.name if labelItem not in outputData['items']: outputData['items'][labelItem] = { 'item' : labelItem, 'labels' : [] } outputData['items'][labelItem]['labels'].append(label.text) path = os.path.join(os.path.dirname(__file__), 'index.html') self.response.out.write(template.render(path, outputData)) #And the models: class Item(db.Model): name = db.StringProperty() class Label(db.Model): text = db.StringProperty() lang = db.StringProperty() item = db.ReferenceProperty(Item) I've tried to make it a number of different way ie. instead of ReferenceProperty storing all Label keys in the Item Model as a db.ListProperty. My test data is just 10 rows in Item and 40 in Label. So my questions: Is it a fools errand to try to optimize this since the high cpu usage is due to the problems with the datastore or have I just screwed up somewhere in the code? ..fredrik

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• Pulling a timestamp from an XML feed with PHP but seem to be to many digits

  - by Craig Ward

  I am pulling a timestamp from a feed and it gives 12 digits (1269088723811). When I convert it, it comes out as 1901-12-13 20:45:52, but if I put the timestamp into http://www.epochconverter.com/ it comes out as Sat, 20 Mar 2010 12:38:43 GMT, which is the correct time. epochconverter.com mentions that it maybe in milliseconds so I have amended the script to take care of it using $mil = $timestamp; $seconds = $mil / 1000; $date = date('Y-m-d H:i:s', date($seconds)); but it still converts the date wrong, 1970-01-25 20:31:23. What am I doing wrong?

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• Is there any book on Google App Engine for java?

  - by Rakesh Juyal

  I would like to start using Google App Engine for java. But i don't know, where to start. Is the tutorial provided by google [ http://code.google.com/appengine/docs/java/overview.html ] enough ? Also, please mention some good books on GAE [ java ] so that i can download those from rapidshare or torrent buy those books and start reading them.

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• Cannot read property 'onPageChanged' of undefined

  - by user3522749

  sample extension background.js code chrome.runtime.onInstalled.addListener(function() { chrome.declarativeContent.onPageChanged.removeRules(undefined, function() { chrome.declarativeContent.onPageChanged.addRules([{ conditions: [ // When a page contains a <video> tag... new chrome.declarativeContent.PageStateMatcher({ pageUrl: { hostEquals: 'www.youtube.com'} }) ], // ... show the page action. actions: [new chrome.declarativeContent.ShowPageAction() ] }]); }); }); and I got Cannot read property 'onPageChanged' of undefined in console. No problem running the code, why is that happening?

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• How long (max characters) can a datastore entity key_name be? Is it bad to haver very long key_names

  - by indiehacker

  What is the maximum number of characters that can be used to define the key_name of a datastore entity? Is it bad to have very long key_names? For example: Lets say we use key_names of a 170 characters, which is the length of a Twitter message 140 plus 10 numeric characters for latitude and 10 for longtitude and 10 for a timestamp. (Reasoning of such a key_name: So by using such a key_name we can easily and quickly be sure of no duplicate postings, since the same message should not come from the same place and time more than once.)

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• Filtering records in app-engine (Java)

  - by Manjoor

  I have following code running perfectly. It filter records based on single parameter. public List<Orders> GetOrders(String email) { PersistenceManager pm = PMF.get().getPersistenceManager(); Query query = pm.newQuery(Orders.class); query.setFilter("Email == pEmail"); query.setOrdering("Id desc"); query.declareParameters("String pEmail"); query.setRange(0,50); return (List<Orders>) query.execute(email); } Now i want to filter on multiple parameters. sdate and edate is Start Date and End Date. In datastore it is saved as Date (not String). public List<Orders> GetOrders(String email,String icode,String sdate, String edate) { PersistenceManager pm = PMF.get().getPersistenceManager(); Query query = pm.newQuery(Orders.class); query.setFilter("Email == pEmail"); query.setFilter("ItemCode == pItemCode"); query.declareParameters("String pEmail"); query.declareParameters("String pItemCode"); .....//Set filter and declare other 2 parameters .....// ...... query.setRange(0,50); query.setOrdering("Id desc"); return (List<Orders>) query.execute(email,icode,sdate,edate); } Any clue?

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• Using the Google Maps API in a Android application.

  - by Tarmon

  Hey, I was looking at the Google Map API for the first time and I had a quick question. I am woking on an Android application and I was wondering if there is a good way to take a route that I have created using Google Maps (snapping to roads) and use the API display this route on an Android application? I see that there is a way to generate images overlayed with polylines created with coordinates but it seems like it would be tought to create a polyline for something like a curved road. Thanks, Rob

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• How to get all visible markers on current zoom level

  - by nefo_x

  Here are some points: 1) I have some markers on the map and records associated with it on the right panel besides the map. They are connected via numeric id, which is stored as a property of marker. 2) All the markers are stored in an array. 3) When the user zooms in the map, records, associated to only visible markers should be shown on the right panel. So, how to get the list of all visible markers on the current zoom level? I've searched over the internet and didn't find something useful. Some kind of what I'm trying to achieve could be found here

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• Is there anyway of making json data readable by a Google spider?

  - by leeand00

  Is it possible to make JSON data readable by a Google spider? Say for instance that I have a JSON feed that contains the data for an e-commerce site. This JSON data is used to populate a human-readable page in the users browser. (I.E. The translation from JSON data to human displayed page is done inside the users browser; not my choice, just what I've been given to work with, its an old legacy CGI application and not an actual server-side scripting language.) My concern here is that, the google spiders will not be able to pickup/directly link to the item in question when a user clicks on it in google, being presented with an index page full of all the items, rather than being linked directly to the item they clicked on. Is there anyway of "informing" the google spider in the JSON that what they should feed the user a different link?

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• Do Blob properties on entities affect query performance?

  - by Jaroslav Záruba

  Hello I'm trying to make my mind on whether to store a binary representation of an entity as its Blob property, or whether I better keep the blobs in some separate 'wrapping' class. Possible impact on memory heap and/or a query execution time are my concerns in the first case, complexity votes against the other one. I know Blobs are not indexed, i.e. index size is not what I'm worrying about. Also I assume for blobs Datastore puts defaultFetchGroup to false, but does it mean that blobs don't make a difference in queries? Regards J. Záruba

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• Mixing static and dynamic endpoints in app.yaml file

  - by Greg

  I'm trying to describe endpoints in my App Engine app and am having difficulty for directory structures that mix static and dynamic content. But my yaml rules are conflicting with one another. Before I change my directory structure, does anyone have a recommendation? The goal is to create a directory that contains both documentation (static html files) and implementations. /api - /v1 - getitdone.py - doc.html - index.html What I think I should be doing with my application yaml... - url: /api/v1/getitdone script: api/v1/getitdone.py - url: /api/ static_files: api/index.html upload: api/index.html - url: /api static_dir: api But this causes the dynamic endpoints to fail. I'm assuming the static_dir reference is breaking it. How can I do this without describing every script and static file reference (I have many more than are listed here)?

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• How can developers use a similar tracking link to Google's results page?

  - by Peter Jones

  I've read heaps of pages of people trying to implement some kind of tracking system similar to the way Google reroutes search link. Eg: Search "Facebook" in Google, open in a new window, and the link changes to something like: "http://www.google.com.au/url?sa=t&source=web&cd=1&ved=0CBkQFjAA&url=http%3A%2F%2Fwww.facebook.com%2F&rct=j&q=Facebook&ei=sksZTZexJobJccXnxZYK&usg=AFQjCNHTTNi-O4Qgrg6kvGVfKJuRqbuOKw&cad=rja" I'm guessing Google tracks that click and then redirects to the actual site by reading the url parameter. What I wanted to know is if there was a simple way that you can make this kind of functionality work using an onclick event - just change the link href after being clicked to redirect? There's a few threads, but from what I could find, nobody has actually succeeded without problems or limitations. Thanks in advance.

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• Sending Mail from Web App to Google Apps won't work - internal routing? VPS

  - by Charlino

  I've got a web application, www.mysuperwebapp.com, which sends out emails for various reasons - the contact us page is a good example. I am using google apps on the domain and I've setup a google apps group, Support ([email protected]), which I want the emails from the contact us page to go to. But the emails don't seem to be sending... I thought it could be that the groups security is a little tighter than normal email, so I change the contact us email to go to [email protected] - but they still didn't appear. So I'm guessing that it has something to do with internal routing and the messages aren't leaving the server/network at all. Eg Sending an email from the mysuperwebapp.com computer to a mysuperwebapp.com email address. I put an entry into the hosts file for 123.123.123.123 mysuperwebapp.com but that doesn't seem to have helped. Also, there doesn't seem to be anything of interest in the event log. What do I need to do? Or what do I need to get my VPS hoster to do? TIA, Charles Ps. The VPS is a Windows 2008 box with IIS7 and the default SMTP (IIS6?) server. The web app is ASP.NET MVC - not that that should matter.

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• infoWindow on MarkerClusterer

  - by vishwanath

  I need infoWindow to be opened instead of zooming in map, when clicking on the ClusterMarker. I am using Gmaps util library MarkerClusterer for creating cluster of markers. I tried changing following line in markerclusterer.js ClusterMarker_.prototype = new GOverlay(); with ClusterMarker_.prototype = new GMarker(); so that I can get the openInfoWindow() function in the clustermarker, but that didnt worked out. Got some error. If possible, Please suggest solution so that this can be done with MarkerClusterer. Or else any other library which will be able to do this. Any help will be appreciated.

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• GAE Datastore: persisting referenced objects

  - by David

  Two "I'm sorries" to begin with: 1) I've looked for a solution (here, and elsewhere), and couldn't find the answer. 2) English is not my mother tongue, so I may have some typos and the sort - please ignore them. To the point: I am trying to persist Java objects to the GAE datastore. I am not sure as to how to persist object having ("non-trivial") referenced object. That is, assume I have the following. public class Father { String name; int age; Vector<Child> offsprings; //this is what I call "non-trivial" reference //ctor, getters, setters... } public class Child { String name; int age; Father father; //this is what I call "non-trivial" reference //ctor, getters, setters... } The name field is unique in each type domain, and is considered a Primary-Key. In order to persist the "trivial" (String, int) fields, all I need is to add the correct annotation. So far so good. However, I don't understand how should I persist the home-brewed (Child, Father) types referenced. Should I: Convert each such reference to hold the Primary-Key (a name String, in this example) instead of the "actual" object. So, Vector<Child> offsprings; becomes Vector<String> offspringsNames; ? If that is the case, how do I handle the object at run-time? Do I just query for the Primary-Key from Class.getName, to retrieve the refrenced objects? Convert each such reference to hold the actual Key provided to me by the Datastore upon the proper put() operation? So, Vector<Child> offsprings; becomes Vector<Key> offspringsHashKeys; ? I would very much appreciate all kinds of comments. I have read ALL the offical relevant GAE docs/example. Throughout, they always persist "trivial" references, natively supported by the Datastore (e.g. in the Guestbook example, only Strings, and Longs). Many thanks, David

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• Problem using date when querying the appengine datastore

  - by manu1001

  I'm running this query: SELECT FROM com.Data WHERE entryDate DATE('2010-3-16') I get this error: org.datanucleus.store.appengine.query.DatastoreQuery$UnsupportedDatastoreFeatureException: Problem with query DATE('2010-3-16'): Unsupported method while parsing expression: InvokeExpression{[null].DATE(Literal{2010-3-16})} The same query works when I use it on the admin console. But it does not work for code (java), either locally or when deployed. Any ideas?

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• XML RSS Feed Parse PHP

  - by JD

  With an XML feed like so: <w:current temperature="22.2" dewPoint="12.9" humidity="56" windSpeed="5.6" windGusts="9.3" windDirection="ESE" pressure="1017.8" rain="0.0" /> and <w:forecast day="Thursday" description="Mostly Sunny. Warm." min="17" max="29" icon="2" iconUri="http://www.weather.com.au/images/icons/2.gif" iconAlt="Mostly Sunny" /> How do I parse it in PHP using the dom? $doc = new DOMDocument(); $doc->load('http://rss.weather.com.au/sa/adelaide'); $arrFeeds = array(); foreach ($doc->getElementsByTagName('item') as $node) { $itemRSS = array ( 'title' => $node->getElementsByTagName('title')->item(0)->nodeValue, 'description' => $node->getElementsByTagName('w')->item(0)->nodeValue, ); array_push($arrFeeds, $itemRSS); } Returns error :Notice: Trying to get property of non-object in /var/www/index.php on line 123

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• What's faster Model.get(keys) or Model.get_by_id(ids, parent=None)

  - by WooYek

  I'm wondering is there a difference in terms of computing cost for the Model.get(keys) and Model.get_by_id(ids, parent=None) methods? Is there a server side computing advantage of using numeric id's over encoded string keys, or other way around? How big is the difference? PS. Sorry, if it's a dupe. I'm sure I read an article about it, but I cannot find it now.

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• Allowing Google to bypass CAPTCHA verification - sensible or not?

  - by edanfalls

  My web site has a database lookup; filling out a CAPTCHA gives you 5 minutes of lookup time. There is also some custom code to detect any automated scripts. I do this as I don't want someone data mining my site. The problem is that Google does not see the lookup results when it crawls my site. If someone is searching for a string that is present in the result of a lookup, I would like them to find this page by Googling it. The obvious solution to me is to use the PHP variable $_SERVER['HTTP_USER_AGENT'] to bypass the CAPTCHA and custom security code for the Google bots. My question is whether this is sensible or not. People could then use Google's cache to view the lookup results without having to fill out the CAPTCHA, but would Google's own script detection methods prevent them from data mining these pages? Or would there be some way for people to make $_SERVER['HTTP_USER_AGENT'] appear as Google to bypass the security measures? Thanks in advance.

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• How do I troubleshoot a problem syncing Google contacts to an iPad?

  - by Daryl Spitzer

  I use my MacBook Pro to sync content onto my wife's iPad. (She doesn't have a computer.) She doesn't want all my contacts from the Address Book app on my MBP. But she does want her Google contacts on her iPad. I've tried the following settings in iTunes: I created a group in my address book called "Claire's" (and put just a couple contacts in it), since if one enables "Sync Address Book Contacts" one either has to select "All" or at least one group. I've double-checked her email address in the dialog that comes up after pressing the "Configure" button. But after syncing, only the couple contacts in the "Claire's" group are in the Contacts app on her iPad. I've checked her Google contacts, and she has over 2000. For some reason they're not syncing. How do I find out why they're not? I looked to see if I could just use an app to do the sync on the iPad, but couldn't find one with good ratings. Do you have one to recommend so I can give up struggling with getting this working in iTunes?

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• Can't wrap my head around appengine data store persistence

  - by aloo

  Hi, I've run into the "can't operate on multiple entity groups in a single transaction." problem when using APPENGINE FOR JAVA w/ JDO with the following code: PersistenceManager pm = PMF.get().getPersistenceManager(); Query q = pm.newQuery("SELECT this FROM " + TypeA.class.getName() + " WHERE userId == userIdParam "); q.declareParameters("String userIdParam"); List<TypeA> poos = (List<TypeA>) q.execute(userIdParam); for (TypeA a : allTypeAs) { a.setSomeField(someValue); } pm.close(); } The problem it seems is that I can't operate on a multiple entities at the same time b/c they arent in the same entity group while in a transaction. Even though it doesn't seem like I'm in a transaction, appengine generates one because I have the following set in my jdoconfig.xml: <property name="datanucleus.appengine.autoCreateDatastoreTxns" value="true"/> Fine. So far I think I understand. BUT - if I replace TypeA in the above code, with TypeB - I don't get the error. I don't believe there is anything different between type a and type b - they both have the same key structure. They do have different fields but that shouldn't matter, right? My question is - what could possible be different between TypeA and TypeB that they give this different behavior? And consequently what do you I fundamentally misunderstand that this behavior could even exist.... Thanks.

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• Communicate between content script and options page

  - by Gaurang Tandon

  I have seen many questions already and all are about background page to content script. Summary My extension has an options page, and a content script. The content script handles the storage functionality (chrome.storage manipulation). Whenever, a user changes a setting in the options page, I want to send a message to the content script to store the new data. My code: options.js var data = "abcd"; // let data chrome.tabs.query({ active: true, currentWindow: true }, function (tabs) { chrome.tabs.sendMessage(tabs[0].id, "storeData:" + data, function(response){ console.log(response); // gives undefined :( }); }); content script js chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) { // not working }); My question: Why isn't the approach not working? Is there any other (better) approach for this procedure.

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• How to unit test chrome extensions?

  - by swampsjohn

  Is there a good way to do this? I'm writing an extension that interacts with a website as a content script and saves data using localstorage. Are there any tools, frameworks, etc. that I can use to test this behavior? I realize there are some generic tools for testing javascript, but are those sufficiently power to test an extension?

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• how to feed a file to telnet

  - by knittl

  hello community, understanding http and headers i played around with telnet to send requests. to not type everything again and again and again i thought i'd write a small textfile with all the commands i need. my file is as simple as follows: GET /somefile.php HTTP/1.1 Host: localhost i then try to feed it to telnet with io-redirection: $ telnet localhost 80 < telnet.txt but all output i get is Trying ::1... Connected to localhost. Escape character is '^]'. Connection closed by foreign host. what am i doing wrong?

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