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  • Google App Engine - Dealing with concurrency issues of storing an object

    - by Spines
    My User object that I want to create and store in the datastore has an email, and a username. How do I make sure when creating my User object that another User object doesn't also have either the same email or the same username? If I just do a query to see if any other users have already used the username or the email, then there could be a race condition. UPDATE: The solution I'm currently considering is to use the MemCache to implement a locking mechanism. I would acquire 2 locks before trying to store the User object in the datastore. First a lock that locks based on email, then another that locks based on username. Since creating new User objects only happens at user registration time, and it's even rarer that two people try to use either the same username or the same email, I think it's okay to take the performance hit of locking. I'm thinking of using the MemCache locking code that is here: http://appengine-cookbook.appspot.com/recipe/mutex-using-memcache-api/ What do you guys think?

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  • crypto++ / pycrypto with google app engine

    - by Joey
    Hi, I am using crypto++ to send AES encrypted http requests to app engine, planning to decrypt them there. My plan is to encrypt the portion after the '?' so it's something like: http://myurl.com/Command?eiwjfsdlfjldkjfs when it is encrypted. However, I'm stuck figuring out how to decrypt it at the other end and still user get() on the response to get the args. Can someone advise if I am taking the wrong approach? Should I be decrypting and not using get() but my own parser then?

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  • Google App Engine datastore encoding?

    - by sernaferna
    I'm using the GAE datastore for a Java application, and storing some text that will be in numerous languages. In my servlet, I'm first checking to see if there's any data in the data store, and, if not, I'm creating some, similar to the following: ArrayList<Lang> list = new ArrayList<Lang>(); list.add(new Lang("EN", "English", 1)); list.add(new Lang("ES", "Español", 0)); //more languages here... PersistenceManager pm = PMF.get().getPersistenceManager(); for(Lang l : list) { pm.makePersistent(l); } Since this is using JDO, I guess I should include the relevent parts of the Lang class too: @PersistenceCapable public class Lang { @PrimaryKey private String code; @Persistent private String name; @Persistent private int popularity; // getters & setters & constructors... } However, the non-ASCII characters are giving me grief. I've set my Eclipse project to use the UTF-8 encoding instead of the default Cp1252, so I think I'm okay from that perspective, but when I use the App Engine Data Viewer to look at my data, that Español entry becomes Español, and when I click on it to view it, I get a 500 Server Error. (There are some other entries with right-to-left text that don't even show up in the Data Viewer at all, but one problem at a time...) Is there anything special I can do in my code to set the character encoding, or specify to GAE that the data I'm storing is UTF-8? Or is the problem on the Eclipse side, and is there something I should be doing with my Java code?

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  • Google App-Engine Java Batch Update

    - by Manjoor
    I need to upload a .csv file and save the records in bigtable. My application successfully parse 200 the records in the csv files and save to table. Here is my code to save the data. for (int i=0;i<lines.length -1;i++) //lines hold total records in csv file { String line = lines[i]; //The record have 3 columns integer,integer,Text if(line.length() > 15) { int n = line.indexOf(","); if (n>0) { int ID = lInteger.parseInt(ine.substring(0,n)); int n1 = line.indexOf(",", n + 2); if(n1 > n) { int Col1 = Integer.parseInt(line.substring(n + 1, n1)); String Col2 = line.substring(n1 + 1); myTable uu = new myTable(); uu.setId(ID); uu.setCol1(MobNo); Text t = new Text(Col2); uu.setCol2(t); PersistenceManager pm = PMF.get().getPersistenceManager(); pm.makePersistent(uu); pm.close(); } } } } But when no of records grow it gives timeout error. The csv file may have upto 800 records. Is it possible to do that in App-Engine? (something like batch update)

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  • Different results between Android Geocoder and Google Geocoding web service

    - by user3571822
    I am creating an Android application and I need to use the geolocation. I have started by using the Geocoder API from Android (android.location.geocoder) but it causes some issues (timed out waiting for response from server) which seem to be common according to what I have read. To make my application work when this kind of error occurs, I use the Geocoding web service. Now, the application works every time. The problem is that the results returned by the geocoder from API and the geocoder from the web service are not the same. For example the web service returns only 3 addresses with only city name and country whereas the geocoding from the API returns about 8 addresses with the feature name, the thoroughfare, the locality... The question is: is there a way to make the results from the web service exactly the same than the ones from the API? EDIT Here is my MainGeocoder class: public class MainGeocoder { private Geocoder geocoderAPI; private GeocoderRest geocoderRest; public MainGeocoder(Context context) { geocoderAPI = new Geocoder(context); geocoderRest = new GeocoderRest(context); } public List<Address> getFromLocationName(String search, int maxResults) { List<Address> addresses; try { addresses = geocoderAPI.getFromLocationName(search, maxResults); return addresses; } catch (IOException e) { e.printStackTrace(); try { addresses = geocoderRest.getFromLocationName(search, maxResults); return addresses; } catch (IOException e1) { return null; } catch (LimitExceededException e1) { return null; } } } } It basically tries to get the list of addresses from the API Geocoder. If an IO exception is thrown it gets this list from the web service by using the GeocoderRest class which has been pasted from here: http://stackoverflow.com/a/15117087/3571822

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  • Google Maps - Adsense ads not showing in Internet Explorer

    - by Spiros
    I am trying to display adsense ads on maps, but internet explorer gives me a hard time once again. The ads show on all other browsers I tried (chrome, ff, safari, opeara) but internet explorer. Has anyone encountered this before? here is my code for the admanager: var publisherID = 'ca-pub-6630823543717184'; var adsManagerOptions = { maxAdsOnMap : 1, style: 'adunit', channel: '5611474977' }; adsManager = new GAdsManager(map, publisherID, adsManagerOptions); adsManager.enable(); I am using xhtml1-strict doctype

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  • Right way to access the Google Cloud Storage bucket via Public API

    - by SyBer
    I'm trying the following request to access the bucket by using curl, via the public API: curl -X POST -H 'Content-Type: image/jpeg' -d @xxx.jpeg 'https://www.googleapis.com/upload/storage/v1/b/clips.eyecam.com/o?uploadType=media&name=x.jpeg&key=XXX' With XXX being the generated key in the Public API. However I'm getting an authorization failure: { "error": { "errors": [ { "domain": "global", "reason": "required", "message": "Login Required", "locationType": "header", "location": "Authorization" } ], "code": 401, "message": "Login Required" } } Seems the request is incorrect and does not pass the authorization key, any idea what would be the right form of the request?

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  • Change|Assign parent for the Model instance on Google App Engine Datastore

    - by Vladimir Prudnikov
    Is it possible to change or assign new parent to the Model instance that already in datastore? For example I need something like this task = db.get(db.Key(task_key)) project = db.get(db.Key(project_key)) task.parent = project task.put() but it doesn't works this way because task.parent is built-in method. I was thinking about creating a new Key instance for the task but there is no way to change key as well. Any thoughts?

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  • Toggle Image Overlays in Google Maps API v3

    - by Douglas
    Hey guys. I've been building a small library for myself for a job I have at the moment building a map for a university. I've gotten pretty well everything I need in some basic form, but one thing has simply not been working, and is simply not giving me results. The university itself is sort of in a partnership with the neighboring college. It's been decided that both campuses should be included. I need to be able to toggle on/off the overlays of the campuses individually. i.e. Start with all campuses ON. User then turns OFF college campus, university overlay stays up. User can then turn it back on to display the college once more, or turn off the university as well, leaving no overlays. Here's a work in progress I'm doing at the moment: http://bgsweb.ca/maps/generator.html Basically, we need to take the one overlay, split it into multiple overlays, and enable the toggling of each individual overlay. Any assistance much appreciated!

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  • innerHTML parse for Google Chrome?

    - by user554095
    Hey all. I am adding text to a textArea via Javascript in Chrome (doing it a totally different way in Firefox/IE as Chrome does not support contentWindows). Here is my code: document.getElementById("vB_Editor_001_textarea").value += '<font color="white"><b>' + numberLabel + ':</b> ' + armory + '</font><br/>'; This HTML is getting put directly into the textArea without being parsed. How can I make it parse into regular text with the HTML markup when it hits the textArea? Thanks!

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  • Custom GMapTypeControl buttons (Google Maps V2 API)

    - by AndiDog
    A similar question was already asked, but does not have a satisfying answer. I want to change the CSS style for the map type selection buttons (which are actually DIVs that don't have a CSS class). The links in the referenced question show how to subclass controls, but the examples don't seem to work for GMapTypeControl. Tried the following function CustomGMapTypeControl() {} CustomGMapTypeControl.prototype = new GMapTypeControl() CustomGMapTypeControl.prototype.setButtonStyle_ = function(button) { button.style.backgroundColor = "red"; } but the setButtonStyle_ function doesn't even get called. Any solutions for this?

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  • Get total marker count from Google API placesSearch

    - by okTalk
    In the example fiddle, how can I get the total number of markers displayed on the map? I'm pushing each of the markers into an array like this: markers.push(marker) And attempting to get the total number of markers like this: $('.marker-count span').html(markers.length); Unfortunately, "markers.length" is returning 0 when it should be returning at least 3. I have example code here: http://jsfiddle.net/287C7/ How can I display the total number of markers? Is it not possible to add each marker to my array? I need to know the amount of markers shown so that I can alert the user if there are none. Thanks,

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  • Custom Themes Introduced in Gmail

    - by Rekha
    As we all know, Google Team introduced a number of HD themes last November. Now they are giving us an option of customizing our own background. We can put in our own images, select from our Google+ photos or just paste any image URL. Or we can browse the Featured Photos section to find the image that we like. They are introducing custom themes with two options, Light and Dark. In the Featured tab, we can simply search for specific kind of pictures like “hdr scenery” or “bokeh wallpaper” and so on. We can easily maintain our personal or work accounts with different background images that suites the best. The company announced this information in their blog today.

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  • Unindexing my tumblr blogs content and moving it to another tumblr blog

    - by sam
    ive been writing a tumblr blog for the past yr or so, ive writen about 300 articles, but now i need to move the blog to another site. (before it was running under blog.mysite.com and i now want it to run under blog.my*new*site.com) I want to keep the archived articles and have them on the new site, so what i was hoping to do was export the blog from tumblr, go into webmaster tools remove all the blogs indexed urls from google webmaster, then make a new tumblr blog and import the posts. Would google see this as new content as ive deleted their indexed copy ? Could i just move the mapping of the tumblr blog to the new subdomain, but in doing this i would lose all the pr and it would still look like duplicate content whats the best way to approach this ?

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  • 410 Responses when your CMS host doesn't support them?

    - by leeand00
    Sending a 410 responses for a page that no longer exist should make Google stop crawling for that page. The site I am working on has been recently migrated, and very little of the content was migrated. I've already turned the existing content into 301 redirects (the content that is on both the old and the new site), but now I would like to flush the old content from Google's memory by placing 410 responses in it's path when it returns to crawl for them and finds a 404 response. However, I asked our CMS host about it, and they said that our CMS does not support 410 responses. Is there some other way to post a 410 response, like making a dead link 301 redirect to a page that a 410 response in the form of a meta tag?

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  • Enhance Your Gmail Account in Chrome

    - by Asian Angel
    Are you tired of items like the Chat and Invite Boxes cluttering up your Gmail account? Then join us as we look at the Better Gmail extension for Google Chrome. Before Here are some examples of items that you may be tired of looking at in your Gmail account such as the “Footer” below your “Inbox”, the “Chat Box”, and the “Invitation Box”. Perhaps you would also like to have the “New Window, Print all, & Create a document Commands” moved elsewhere. And of course there is everyone’s “favorite” sponsored links… Time to do some cleaning up and reorganizing. Better Gmail in Action As soon as you have installed Better Gmail a new tab will automatically open and present you with the available options. Place a “checkmark” in the box for each option that you would like activated and click on “Save” when finished. Note: The final option entry is a tie-in with two other “linked” extensions (Folders4Gmail & HTML Signature) while the middle listing is a link to an article for disabling Google Buzz. Once you have saved your changes in the “Options” you will be prompted to refresh your Gmail tab to see the changes. Going back to our “Inbox Area” everything looks so much more streamlined and clean now. Goodbye clutter! The “New Window, Print all, & Create a document Commands” definitely look a lot nicer as a small toolbar above our e-mail. And the right side…you can see for yourself just how much better that looks. No more distractions there to bother you as you read your e-mail. Conclusion If you have been wanting to get rid of the undesirable elements visible in your Gmail account then hurry over to the Better Gmail page, grab the extension and enjoy the better view. Links Download the Better Gmail extension (Google Chrome Extensions) Similar Articles Productive Geek Tips Figure out which Online accounts are selling your email to spammersAdd a Remember The Milk Task Pane to Gmail in ChromeHow to Send and Receive Hotmail from Your Gmail AccountAdd Your Gmail To Windows Live MailOpen Your Gmail Account in a Popup Window TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Windows Media Player 12: Tweak Video & Sound with Playback Enhancements Own a cell phone, or does a cell phone own you? Make your Joomla & Drupal Sites Mobile with OSMOBI Integrate Twitter and Delicious and Make Life Easier Design Your Web Pages Using the Golden Ratio Worldwide Growth of the Internet

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  • Failing with Adsense / How to get $ PC

    - by cam77
    So, I am literally just starting out with google adsense. I have implemented google adsense ads from (1) account and from (2) different channels, per website they're on. (2 Wordpress Websites, activated with 'GoogleAdsense Plugin' for WordPress). They are implemented at the bottom of every post on my 2 Wordpress websites within the 'Blog' sections. My adsense dashboard is stating I've received a few clicks; but across it still states my account earnings and balance at $0.00. When / How will I start seeing money earned to my account?

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  • Why is "www.mysite.com" different from "mysite.com"?

    - by sapeish
    In any browser if I use www.mysite.com or just mysite.com the web page is correctly retrieved, but I am having trouble with Google Analytics and Facebook App. Facebook: To be able to get Likes, I create the Facebook App needed and set the site URL to http://mysite.com/. Using their tool http://developers.facebook.com/tools/debug/ when I test my page using http://mypage.com it works but using http://www.mypage.com fails with the message: Object at URL 'http://www.mysite.com/' of type 'website' is invalid because the domain 'www.mysite.com' is not allowed for the specified application id. Google Analytics: To be able to get traffic statistics, I created a Property and a Profile both with the URL http://www.mypage.com and no statistics were gathered in a week, when I changed the configured URL to http://mypage.com statistics where available a few hours later. What should I do to have statistics and likes for both www.mysite.com and mysite.com ??

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  • Panda 4: Reducing #indexed pages. How much is enough?

    - by Noam
    I've been hit by panda 4 (40% decrease). I didn't see any change during panda 1-3. From what I've read it and when compared to my site, the change is probably due to the fact that I have over 30M pages indexed on Google, and they've starting seeing that as some sort of bad indication. Although I feel all of the pages have a unique value that Google should crawl, it seems I should make some tough calls and deduce the indexed pages according to some prioritization I will conduct. The question is what should be my target, or what factors should help me figure out a relevant target. How many pages should I try to reduce to? - 25M - 15M - 1M - 2000 Is it enough to add noindex to low priority pages or should I also remove all internal linking to them?

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  • Getting the keyword as a parameter from Adwords using ValueTrack

    - by Stephen Ostermiller
    I set up an AdWords campaign for website following the instructions for Google AdWords ValueTrack. One of the things that it is supposed to be able to do is pass the keyword as a URL parameter using the code {keyword} in the URL. I set it up for integration with Google Analytics such the landing URLs would look like: http://example.com/landing.html?utm_source=adwords&utm_medium=cpc&utm_term=%7Bkeyword%7D&utm_content=my_content&utm_campaign=my_page where {keyword} is in the utm_term parameter. Hower, this keyword substitution isn't happening. Why?

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  • How do I change the Google Chrome offline icon?

    - by user1105047
    I am using some offline apps for google chrome and because of this an application indicator pops un in the gnome panel. My problem is that this indicator uses the google chrome default system tray icon and I think it looks ugly with my current theme so I would basically like to change the icon. I can't find the icons that google chrome is using for this purpose but I have no problem finding the other icons used by google chrome and changing them, like the 24x24 or 22x22 icons that you see in the gnome application menu (which by default looks like the application indicator for google chrome). It doens't seem like Google Chrome is taking the icon from e.g /usr/share/icons/ and I can't change the icon by changing the icon theme in like gconf-editor Is there anyway to see the preferences (like you can do with launchers) of the application indicators in the gnome-panel and then locate the indicator icon or change it in another way?

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  • SEO issue - External links rel="nofollow" or NOT!

    - by Mary Melody
    Previously I created a website for promo codes and coupons. That have hundreds of external links to the Retailer's websites and I used rel="nofollow" tag. But my site SEO rank was very very... bad especially on Google. So then I removed the rel="nofollow" tag, but no improvement. The only difference between this site and my other sites is "External links". My other sites have good ranking on Google. Now I'm creating a site for reviews. So this is also similar situation for me. I just want to know about how does SEO react with external links? and then what possibly happened in my case?

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