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  • Does Google App Engine allow creation of files and folders on the server ?

    - by Frank
    I know Google App Engine offers free space, but I wonder if it's for storing data in it's database only or does it also allow me to create files and directories on the server side to store my data ? For instance can I use the following method to save file ? public static void saveFile(String File_Path,StringBuffer Str_Buf,boolean Append) { FileOutputStream fos=null; BufferedOutputStream bos=null; try { fos=new FileOutputStream(File_Path,Append); bos=new BufferedOutputStream(fos); for (int j=0;j<Str_Buf.length();j++) bos.write(Str_Buf.charAt(j)); } catch (Exception e) { e.printStackTrace(); } finally { try { if (bos!=null) { bos.close(); bos=null; } if (fos!=null) { fos.close(); fos=null; } } catch (Exception ex) { ex.printStackTrace(); } } } Frank

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  • Is there a tool to navigate targets and properties 's definition?

    - by Nam Gi VU
    I'm working on a bundle of MSBuild script files and many many times I have the need of locating the definition of a called target or a property being used. At the moment, I have to search to the target/property 's name text and view the file containing that text - only then I can read the definition of the target/property I'm looking for. This remind me of the feature of class/variable navigation of Visual Studio: we can choose "Go to definition" or "Find references" when select a class name or a variable. Is there a similar way to work with MSBuild target/property/item? Hope to hear from all of you! Nam.

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  • how to format date when i load data from google-app-engine..

    - by zjm1126
    i use remote_api to load data from google-app-engine. appcfg.py download_data --config_file=helloworld/GreetingLoad.py --filename=a.csv --kind=Greeting helloworld the setting is: class AlbumExporter(bulkloader.Exporter): def __init__(self): bulkloader.Exporter.__init__(self, 'Greeting', [('author', str, None), ('content', str, None), ('date', str, None), ]) exporters = [AlbumExporter] and i download a.csv is : the date is not readable , and the date in appspot.com admin is : so how to get the full date ?? thanks i change this : class AlbumExporter(bulkloader.Exporter): def __init__(self): bulkloader.Exporter.__init__(self, 'Greeting', [('author', str, None), ('content', str, None), ('date', lambda x: datetime.datetime.strptime(x, '%m/%d/%Y').date(), None), ]) exporters = [AlbumExporter] but the error is :

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  • Why can't I see any data in the Google App Engine *Development* Console?

    - by willem
    I run my google app engine application in one of two ways... Directly by using the application from http://localhost:8080 Or execute unit tests from http://localhost:8080/test When I create entities by using the application directly, the data is visible in the Development Console (dataStore view). However, when I execute the unit tests... even if they succeed and I can put() and get() data, the data does not show in the dataStore view. Any idea why I can't see my data? Even though it is there? Notes: I use GAEUnit for unit tests. the data stored mostly consists of StringProperties(). I use Python and run Django on top of the GAE, don't know if that matters.

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  • How to use pom.xml/Maven to initialize a local thoughtsite (App Engine sample) project in Eclipse?

    - by ovr
    This sample app ("thoughtsite") for App Engine contains a pom.xml in its trunk: http://code.google.com/p/thoughtsite/source/browse/#svn/trunk But I don't know what command to run in Maven to set up the project locally. (The README doesn't mention anything about Maven.) I tried to just import the project code directly into Eclipse but it doesn't look like it's in an appropriate format for a direct import. So I assume I need to do something with Maven to get it set up correctly. I haven't really used Maven before so I'm not sure what command I would need to run to set everything up. The pom.xml seems like it downloads a bunch of dependencies for the project like the Spring jar files which I don't see anywhere else in the svn repository.

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  • Google App Engine - What causes cold start latency time to be high, even though my CPU usage is rela

    - by Spines
    I've optimized my code to use only lightweight libraries. I'm even using the low level datastore rather than JDO. And my cold start CPU usage has dropped from about 5 seconds to about 1.5 seconds. However, the time it takes to respond is often about 4.5 seconds, though it varies a lot. Here are some lines from my logs: 03-19 09:16PM 57.368 /donothing 200 4506ms 1516cpu_ms 0kb Mozilla/5.0 03-19 09:22PM 54.884 /donothing 200 4452ms 1477cpu_ms 0kb Mozilla/5.0 What is the app engine doing for those extra 3 seconds that apparently isn't using any CPU?

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  • Target not being executed when imported to the main *.proj file

    - by Zbigniew Kawalec
    I use the TFS 2008 build facilities. I have a large MSBuild project (TFSBuild.proj) and I wanted to split it into a few files because it is becoming hard to maintain. I found a strange behavior; when I extracted one of the targets (BeforeInitializeWorkspace) to a separate file and then imported it into the main *.proj file, it was not executed. Although, in my MSBuild log, there was information that the target has been imported and overridden, but hasn't been executed. If I have the same target defined in my main *.proj file, it is executed. Can someone explain why the target isn't executed when imported from a file? Thanks,

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  • Bulk get of child entities on Google app engine?

    - by dfrankow
    On Google App Engine in Python, I have a Visit entity that has a parent of Patient. A Patient may have multiple visits. I need to set the most_recent_visit (and some auxiliary visit data) somewhere for later querying, probably in another child entity that Brett Slatkin might call a "relationship index entity." I wish to do so in a bulk style as follows: 1. get 100 Patient keys 2. get all Visits that have any of the Patients from 1 as an ancestor 3. go through the Visits and get the latest for each Patient Is there any way to perform step 2 in a bulk get? I know there is a way to bulk get entities from a list of keys, and there is a way to match a single entity by its ancestor.

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  • Google App Engine update an object from servlet not working ?

    - by Frank
    I use the following code to update an object from servlet in Google App Engine : String Time_Stamp=Get_Date_Format(6),query="select from "+Contact_Info_Entry.class.getName()+" where Contact_Id == '"+Contact_Id+"' order by Contact_Id desc"; PersistenceManager pm=null; try { pm=PMF.get().getPersistenceManager(); // note that this returns a list, there could be multiple, DataStore does not ensure uniqueness for non-primary key fields List<Contact_Info_Entry> results=(List<Contact_Info_Entry>)pm.newQuery(query).execute(); Contact_Info_Entry A_Contact_Entry=results.get(0); A_Contact_Entry.Extra_10=Time_Stamp; pm.makePersistent(A_Contact_Entry); } catch (Exception e) { Send_Email(Email_From,Email_To,"Check_License_Servlet Error [ "+Time_Stamp+" ]",new Text(e.toString()+"\n"+Get_Stack_Trace(e)),null); } finally { pm.close(); } The value "[ 2010-05-13 Thu 15:58:31 ]" was in A_Contact_Entry.Extra_10, but it seems "pm.makePersistent(A_Contact_Entry);" was not executed. The object was not updated and there was no error message, why ? How to fix it ?

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  • Is there a graphics/game engine that supports PC & Mac?

    - by Chris Masterton
    Is their a graphics that runs on both Mac & PC? I've seen Unity and thats a possibility, I'm wondering if there are any other choices. Ideally I want to port the same C++ game code to both PC & Mac platforms, but let the underlying game/graphics engine take advantage of the appropriate hardware. edit: I'm looking on the level of Torque, Gamebryo & Unreal. A commercial solution is perfectly acceptable. Thanks, Chris

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  • Google App Engine - About how much quota does a single datastore put use?

    - by Spines
    The latency for a datastore put is about 150ms (http://code.google.com/status/appengine/detail/datastore/2010/03/11#ae-trust-detail-datastore-put-latency). About how much CPUTime is used by a single datastore put with data size of 100 bytes, into an entity that has only 2 columns, and no indexes? I plan to do some testing with this later today to figure it out, but if anyone already knows that would help me out :). Also, does anyone know about how much extra overhead in CPUTime doing this datastore put through the task queue would be? Note: This is kind of a follow up to this question: http://stackoverflow.com/questions/2421075/google-app-engine-how-reliable-are-the-logs.

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  • Automate publishing of a WCF library using MSBuild

    - by user438334
    I searched and couldn't find anything releated to this topic. When using Visual Studio 2010 for a WCF library, you can right-click it and publish the WCF Library, which generates/creates the .svc and web.config file as well as deploys it. I have been trying to mimic this in msbuild and have had no success. Is this possible? I have build scripts to deploy a WCF application, website, and have had no luck using these scripts to successfully deploy a WCF library. When i do use them, it compiles the Dll's but not the .svc or web.config file. Any advice would be greatly appreciated.

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  • Force rules for build and deployment

    - by Sazug
    Our web project is source-controlled with SVN. It contains MSBuild file to build local, test and production builds. We also use CruiseControl.NET to deploy production and test versions to servers manually (not after every commit). The question is how to check that if production deployment is being done using CC.NET web project is built using production build (not test or other)? How to force specific steps to be executed when building and deploying to production (like compress JS and CSS, compile with debug="false", etc...)? Now it is possible for every developer make changes in MSBuild file (so he/she can forget to compress JS on production build, etc.).

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  • How to set a complex custom crontab in google-app-engine (java)?

    - by Shreeni
    I am building an app for which I need to set up cron jobs. What I want to do is to set the specific minutes in a hour where specific crons should run. For instance: Task1 at 1st minute of the hour Task2 on every second minute of the hour Task3 every 2 minute only in the second half of the hour Building this in the standard Unix cron format is reasonably straightforward, but could not figure out how to do it in the Google-App-Engine. The documentation does not list any non-trivial examples. Any suggestions on how to do it? Examples would be excellent.

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  • Is there a good open source search engine including indexing bot which can be used to make up speci

    - by Skuta
    Hello, Our application (C#/.NET) needs a lot of queries to search. Google's 50,000 policy per day is not enough. We need something that would crawl Internet websites by specific rules we set (for ex. country domains) and gather URLs, Texts, keywords, name of websites and create our own internal catalogue so we wouldn't be limited to any massive external search engine like Google or Yahoo. Is there any free open source solution we could use to install it on our server? No point in re-inventing the wheel.

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  • Python wrapper for Google Maps making Google App Engine crash?

    - by user1679332
    I am currently trying to build a web app using Google App Engine that will involve using the Google Maps API. Since I am coding in python, I tried importing the python wrapper for Google Maps (found here); however, performing the import will cause my web app to crash. Are there any suggestions for how I can fix this problem? I'm guessing the crash might have something to do with the fact that I need to incorporate the google maps python wrapper into my application, but how do I go about doing that? Thanks!

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  • CruiseControl.NET, Visual Studio & SubVersion

    - by Ian
    Hi All, I am setting up a Continuous Integration server. I have one issue that doesn't seem to be mentioned in the tutorials. I have a ASP.net Web Application that I need to compile and them publish. My Problem is that I seem to be able to compile the app but when I attempt to use a buildPublisher this copies every thing including .svn files & folders and ms CS files. I am using an MSBuild task to compile my source. I tried setting my MSBuild Output Directory to directory but this didn't seem to have any effect. What am I not understanding? Thanks

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  • How can I receive percent encoded slashes with Django on App Engine?

    - by J. Frankenstein
    I'm using Django with Google's App Engine. I want to send information to the server with percent encoded slashes. A request like http:/localhost/turtle/waxy%2Fsmooth that would match against a URL like r'^/turtle/(?P<type>([A-Za-z]|%2F)+)$'. The request gets to the server intact, but sometime before it is compared against the regex the %2F is converted into a forward slash. What can I do to stop the %2Fs from being converted into forward slashes? Thanks!

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  • app engine's back referencing is too slow. How can I make it faster?

    - by Ray Yun
    Google app engine has smart feature named back references and I usually iterate them where the traditional SQL's computed column need to be used. Just imagine that need to accumulate specific force's total hp. class Force(db.Model): hp = db.IntegerProperty() class UnitGroup(db.Model): force = db.ReferenceProperty(reference_class=Force,collection_name="groups") hp = db.IntegerProperty() class Unit(db.Model): group = db.ReferenceProperty(reference_class=UnitGroup,collection_name="units") hp = db.IntegerProperty() When I code like following, it was horribly slow (almost 3s) with 20 forces with single group - single unit. (I guess back-referencing force reload sub entities. Am I right?) def get_hp(self): hp = 0 for group in self.groups: group_hp = 0 for unit in group.units: group_hp += unit.hp hp += group_hp return hp How can I optimize this code? Please consider that there are more properties should be computed for each force/unit-groups and I don't want to save these collective properties to each entities. :)

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  • What is the most efficient way to pass data (list of pairs of [Integer + Double]) between two Google App Engine instances?

    - by ruslan
    What is the most efficient way to pass data (list of pairs of [Integer, Double]) between two Google App Engine instances ? Currently I use Java binary serialization. Frontend servlet receives data from the client in JSON format. I convert it to byte[] using ObjectOutput.writeObject and then send it to backend servlet via HTTP POST. It's not in production yet. Should I just pass client's JSON as it is to backend? It seems more logical. But it's bigger in size. Or should I use Google Protocol Buffers as stated in this benchmark article ? Thank you!!!

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  • How to get google app engine logs in C#?

    - by Max
    I am trying to retrieve app engine logs the only result I get is "# next_offset=None", below is my code: internal string GetLogs() { string result = _connection.Get("/api/request_logs", GetPostParameters(null)); return result; } private Dictionary<string, string> GetPostParameters(Dictionary<string, string> customParameters) { Dictionary<string, string> parameters = new Dictionary<string, string>() { { "app_id", _settings.AppId }, { "version", _settings.Version.ToString() } }; if (customParameters != null) { foreach (string key in customParameters.Keys) { if (parameters.ContainsKey(key)) { parameters[key] = customParameters[key]; } else { parameters.Add(key, customParameters[key]); } } } return parameters; }

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  • Getting a job in the games industry as a developer, just knowing a game engine

    - by numerical25
    I recently enrolled in a community college for games developement. But I am skeptical about the curriculum. I have no experience in the gaming industry so I wouldn't be able to tell whether it's a good investment or not. So I am asking you. I don't want to get too much into the details of all the classes I am taking so I will try to be brief. By the time I graduate, I should have a understanding of how a game engine works. I will be working with the Unreal Engine to develop a Multiplayer game from scratch. So in the process of my final project, I will learn how to work within the Unreal Engine, learn Python and learn how to use its API to connect to a remote server and build game mechanics. Overall I will also recieve an associates degree in game development. I learn C++ but not C. The director said he was trying to implement C in the program as well. What I notice is I will not learn how to build a 3D game engine from scratch. They do not teach any artificial intelligence (AI). I will not learn how to work with the graphics card using a graphics API such as DirectX or OpenGL. I know building a game engine from scratch is a little complex, but at the same time the track is requiring me to take some advanced mathematics courses such as calculus and geometry 1 and 2. I also got to take a physics class. I just think that's a little much for just learning how to use the Unreal Engine but not actually build one or try to learn the anatomy of a games engine. Is this good enough to possibly land my a job in the industry? If I left anything out or was not detail, please feel free to ask more questions. Edit: I do learn data structures and algorithms.

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  • Site Search Engine for 1,000 page website

    - by Ian
    I manage a website with about 1,000 articles that need to be searchable by my members. The site search engines I've tried all had their own problems: Fluid Dynamics Search Engine Since it's written in perl, it was a bit hacky to integrate with my PHP-based CMS. I basically had to file_get_contents the search results page. However, FDSE had the best search results. Google CSE Ugh, the search results SUCK. It can't find documents even using unique strings. I'm so surprised that a Google search product is this bad. Nor can I get any answers on their 'help' forums, and I am a paying user. Boo, Google. Boo. Sphider Again, bad search results. Unable to locate some phrases used in link text. Better results than Google CSE though. Shame on Google that a free PHP script has better search results than their paid application. IndexTank This one looked really promising. I got all set up with their PHP API client. But it would only randomly add articles that I submitted. Out of 700+ articles I pushed to the index through their API, only 8 made it in. Unable to find any help on this subject. Update for IndexTank -- Got the above issue fixed, so this looks most promising so far. The site itself runs on php/mysql and FreeBSD, though this shouldn't matter for a web crawling indexer. I've looked at Lucene, but I don't know anything about Java or installing Java programs on my web server. I also do not have root access on my web server, if this would be required for installation. I really don't need a lot of fancy features. It just needs to be able to crawl my web site and return great (even decent!) search results. I don't need any crazy search operators. It doesn't need to index off my primary domain. It just needs to work! Thanks, Hive Mind!

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