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• Error releasing Grails plugin

  - by Don

  Hi, I checked out the trunk of my plugin from the Grails svn repo, made some changes, incremented the version number to 0.2.1, then ran release-plugin. It failed with the error shown below: Checking in plugin zip... Updating from SVN... Updated to revision 61343. Committing local, please wait... Enter a SVN commit message: Fixed bug with controller dependency version and upgraded to grails 1.2.2 Committing code. Please wait... Failed to stat working directory: svn: Commit failed (details follow): svn: Authentication required for '<https://svn.codehaus.org:443> grails-plugins primary Subversion repository' Application context shutting down... Application context shutdown. It's possible that my password is not correct, but I'm pretty sure it is. Does anyone know what the problem could be, and is there some way I can verify that the password I'm using is correct?

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• Idiomatic way to do list/dict in Cython?

  - by ramanujan

  My problem: I've found that processing large data sets with raw C++ using the STL map and vector can often be considerably faster (and with lower memory footprint) than using Cython. I figure that part of this speed penalty is due to using Python lists and dicts, and that there might be some tricks to use less encumbered data structures in Cython. For example, this page (http://wiki.cython.org/tutorials/numpy) shows how to make numpy arrays very fast in Cython by predefining the size and types of the ND array. Question: Is there any way to do something similar with lists/dicts, e.g. by stating roughly how many elements or (key,value) pairs you expect to have in them? That is, is there an idiomatic way to convert lists/dicts to (fast) data structures in Cython? If not I guess I'll just have to write it in C++ and wrap in a Cython import.

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• pubsub link with Project Rome

  - by itsadok

  I want to use Project Rome to create an RSS feed, using the code from the tutorial as base. I would like to add a pubsubhubbub discovery link, but there doesn't seem to be a general way to do so. I can use a Link object if I create an atom feed (which I don't want to limit myself to), or I can just add foreign markup, like this: // import org.jdom.Element Element element = new Element("link"); element.setAttribute("rel", "hub"); element.setAttribute("href", "https://myhub.example.com/endpoint"); feed.setForeignMarkup(Arrays.asList(element)); But it feels ugly. Is this really the best way to do this?

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• SLF4J, Common Logging, console output

  - by Mauricio Scheffer

  I have this 3rd party library that has: slf4j-api-1.5.5.jar slf4j-jdk14-1.5.5.jar jcl-over-slf4j-1.5.5.jar I want to write some tests against this library and see its log output, and I don't want to add any more logging libraries (no log4j or anything else). I understand that SLF4J and Common Logging are both logging abstractions so I probably need to write my own simple concrete logger (or maybe not, since jcl-over-slf4j includes org.apache.commons.logging.impl.SimpleLog?). If so, what interfaces should I implement, and more importantly, how do I set up SL4J/Common Logging to use my logger in my test? I read in the SLF4J docs that I have to modify the StaticLoggerBinder class... does that really mean that I actually have to download SLF4J sources, modify the class and recompile it?

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• XmlSerializer throws exception when serializing dynamically loaded type

  - by Dr. Sbaitso

  Hi I'm trying to use the System.Xml.Serialization.XmlSerializer to serialize a dynamically loaded (and compiled class). If I build the class in question into the main assembly, everything works as expected. But if I compile and load the class from an dynamically loaded assembly, the XmlSerializer throws an exception. What am I doing wrong? I've created the following .NET 3.5 C# application to reproduce the issue: using System; using System.Collections.Generic; using System.Xml.Serialization; using System.Text; using System.Reflection; using System.CodeDom.Compiler; using Microsoft.CSharp; public class StaticallyBuiltClass { public class Item { public string Name { get; set; } public int Value { get; set; } } private List<Item> values = new List<Item>(); public List<Item> Values { get { return values; } set { values = value; } } } static class Program { static void Main() { RunStaticTest(); RunDynamicTest(); } static void RunStaticTest() { Console.WriteLine("-------------------------------------"); Console.WriteLine(" Serializing StaticallyBuiltClass..."); Console.WriteLine("-------------------------------------"); var stat = new StaticallyBuiltClass(); Serialize(stat.GetType(), stat); Console.WriteLine(); } static void RunDynamicTest() { Console.WriteLine("-------------------------------------"); Console.WriteLine(" Serializing DynamicallyBuiltClass..."); Console.WriteLine("-------------------------------------"); CSharpCodeProvider csProvider = new CSharpCodeProvider(new Dictionary<string, string> { { "CompilerVersion", "v3.5" } }); CompilerParameters csParams = new System.CodeDom.Compiler.CompilerParameters(); csParams.GenerateInMemory = true; csParams.GenerateExecutable = false; csParams.ReferencedAssemblies.Add("System.dll"); csParams.CompilerOptions = "/target:library"; StringBuilder classDef = new StringBuilder(); classDef.AppendLine("using System;"); classDef.AppendLine("using System.Collections.Generic;"); classDef.AppendLine(""); classDef.AppendLine("public class DynamicallyBuiltClass"); classDef.AppendLine("{"); classDef.AppendLine(" public class Item"); classDef.AppendLine(" {"); classDef.AppendLine(" public string Name { get; set; }"); classDef.AppendLine(" public int Value { get; set; }"); classDef.AppendLine(" }"); classDef.AppendLine(" private List<Item> values = new List<Item>();"); classDef.AppendLine(" public List<Item> Values { get { return values; } set { values = value; } }"); classDef.AppendLine("}"); CompilerResults res = csProvider.CompileAssemblyFromSource(csParams, new string[] { classDef.ToString() }); foreach (var line in res.Output) { Console.WriteLine(line); } Assembly asm = res.CompiledAssembly; if (asm != null) { Type t = asm.GetType("DynamicallyBuiltClass"); object o = t.InvokeMember("", BindingFlags.CreateInstance, null, null, null); Serialize(t, o); } Console.WriteLine(); } static void Serialize(Type type, object o) { var serializer = new XmlSerializer(type); try { serializer.Serialize(Console.Out, o); } catch(Exception ex) { Console.WriteLine("Exception caught while serializing " + type.ToString()); Exception e = ex; while (e != null) { Console.WriteLine(e.Message); e = e.InnerException; Console.Write("Inner: "); } Console.WriteLine("null"); Console.WriteLine(); Console.WriteLine("Stack trace:"); Console.WriteLine(ex.StackTrace); } } } which generates the following output: ------------------------------------- Serializing StaticallyBuiltClass... ------------------------------------- <?xml version="1.0" encoding="IBM437"?> <StaticallyBuiltClass xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <Values /> </StaticallyBuiltClass> ------------------------------------- Serializing DynamicallyBuiltClass... ------------------------------------- Exception caught while serializing DynamicallyBuiltClass There was an error generating the XML document. Inner: The type initializer for 'Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriterDynamicallyBuiltClass' threw an exception. Inner: Object reference not set to an instance of an object. Inner: null Stack trace: at System.Xml.Serialization.XmlSerializer.Serialize(XmlWriter xmlWriter, Object o, XmlSerializerNamespaces namespaces, String encodingStyle, String id) at System.Xml.Serialization.XmlSerializer.Serialize(TextWriter textWriter, Object o, XmlSerializerNamespaces namespaces) at System.Xml.Serialization.XmlSerializer.Serialize(TextWriter textWriter, Object o) at Program.Serialize(Type type, Object o) in c:\dev\SerTest\SerTest\Program.cs:line 100 Edit: Removed some extraneous referenced assemblies

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• create a simple pdf report from html

  - by opensas

  I'm looking for a way to generate pdf files from html In order to make simple tabular reports I would need the following features table rendering variable page size repeating headers / footers on every page calculated page number / total page css support would be nice I know there have been many similar questions in stackoverflow, but I don't know if there's a product that supports the aforementioned features... Ideally, the source would be a plain and simple well built html with css, (I'm building the html files, so I can adapt to the products needs, that is, it won't have to render every piece of html crap you can throw at a browser) and with some custom tags to configure headings, footer, page size, etc... then I would run a command line to convert it from html to pdf. I think http://www.allcolor.org/YaHPConverter/ does something like that

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• Hibernate MySQL transaction configuration issue

  - by James

  I'm having trouble starting a transaction with Hibernate and MySQL while running in JUnit. I'm getting a HibernateException which states: "No TransactionManagerLookup specified". I believe this error is because I don't have a proper configuration setting for hibernate.transaction.manager_lookup_class. I see that under the namespace of org.hibernate.transaction there are quite a few different lookup classes that I could use. All of the documentation that I could find on these was very vague. My question is what is the appropriate one for MySQL?

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• Light-weight client/server DB?

  - by OverTheRainbow

  Hello, (This question falls between programming and finding a tool, so I guess I'll ask here in SO since it has more activity than SuperUser.) I like the simplicity of SQLite, but by design, it doesn't support concurrent access. The apps I write don't have heavy needs, so I'd like to avoid heavier solutions like MySQL that are more difficult to deploy (remote customers with usually no computer personnel). Does someone know of a good solution that would offer the following features? Client available for VB.Net applications The server itself doesn't have to be a .Net application. Actually, I'd rather a bare-metal server so that it can run even on embedded Linux hosts with less RAM/CPU than regular PC's Easy install: the client part should either be statically linked inside the client application or be available as a single DLL, and the server should just be a single EXE listening for queries, à la Fossil (http://www.fossil-scm.org) clients can locate the server on the LAN by broadcasting data picked up by the server, so users don't have to write down the IP address and paste it into each client open-source, or moderately priced closed-source Thank you.

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• Error getting SVN repo of Liferay in Eclipse

  - by Tim

  Hello, Im using Eclipse Galileo and have installed Subclipse. I looked at the svn repo url at http://www.liferay.com/web/brian.chan/blog/-/blogs/changes-to-anonymous-access-to-liferay-s-svn and then tried to get Liferay from their SVN repository in Eclipse, using svn://svn.liferay.com/repos/public --username guest,but i get the following error message: Error validating location: "org.tigris.subversion.javahl.ClientException:No connection could be made because the target machine actively refused it. svn: Cant connect to host 'svn.liferay.com':No connection could be made because the target machine actively refused it Any way to fix this ? Thank You

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• Keycodes of function keys with F-lock off?

  - by ak

  Many recent keyboard from Microsoft and Logitech have a so-called F-Lock key, which toggles the function keys F1 to F12 between their traditional keycodes and new meanings that are printed onto the keys: F1=Help F2=Undo F3=Redo F4=Open ... . (See also http://en.wikipedia.org/wiki/F-Lock.) This means that long-established shortcuts such as Alt+F4 no longer work if the F-lock is off, and googling shows that quite a few people are unhappy about this. So I'm wondering, what virtual key (VK) codes do the function keys send when F-lock is off? VK_F13 to VK_F24 perhaps? Or do they not trigger standard keyboard events at all? (I haven't got such a keyboard to try and find out myself, and didn't manage to dig up anything on MSDN about this.)

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• Doctrine Mssql uniqueidentifier isn't cast as char or nvarchar when retrieved from the database.

  - by Tres

  When I retrieve a record from the database which has a column of type "uniqueidentifier", Doctrine fills it with "null" rather than the unique id from the database. Some research and testing has brought this down to a PDO/dblib driver issue. When directly querying via PDO, null is returned in place of the unique id. For reference, http://trac.doctrine-project.org/ticket/1096, has a bit on this, however, it was updated 11 months ago with no comment for resolution. A way around this, as mentioned at http://bugs.php.net/bug.php?id=24752&edit=1, is to cast the column as a char. However, it doesn't seem Doctrine exposes the native field type outside of generating models which makes it a bit hard to detect uniqueidentifier types and cast them internally when building the sql query. Has anyone found a workaround for this?

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• JSON stringify standalone function for JavaScript

  - by karlthorwald

  I know of YUI who has a JSON.stringify utility and also of JSON2 from json.org. What are other good implementations of JSON.stringify? It should also work in IE6, IE7 and not depend on a framework. If it depends on anything this should be easily included all in one file. Edit: I could easily use jquery-json, which was suggested in the comments of the accepted answer. It did what I wanted. (It depends on jquery but that was easily solved)

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• maximum execution time for javascript

  - by Andrew Chang

  I know both ie and firefox have limits for javascript execution here: hxxp://support.microsoft.com/?kbid=175500 Based on number of statements executed, I heard it was 5 million somewhere in ie hxxp://webcache.googleusercontent.com/search?q=cache:_iKHhdfpN-MJ:kb.mozillazine.org/Dom.max_script_run_time+dom.max_script_run_time&hl=en&gl=ca&strip=1 (google cache since site takes forever to load for me) based on number of seconds in firefox, it's 10 seconds by default for my version The thing I don't get is what cases will go over these limits: I'm sure a giant loop will go over the limit for execution time But will an event hander go over the limit, if itself it's execution time is under the limit but if it occurs multiple times? Example: Lets say I have a timer on my page, that executes some javascript every 20 seconds. The execution time for the timer handler is 1 second. Does firefox and ie treat each call of the timer function seperatly, so it never goes over the limit, or is it that firefox/ie adds up the time of each call so after the handler finishes, so after 200 seconds on my site (with the timer called 10 times) an error occurs even though the timer handler itself is only 1 second long?

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• Error connecting to exchange mailbox using WebDav

  - by Warda

  We have a windows service that uses the “WebDAV .NET for Exchange” libraries to access the mail server. The WebDav libraries attempts to access the mailbox to process mails. The Error occurs on attempting to retrieve the mailbox contents. The Code snippet below is how the code retrieves the mailbox contents: NetworkCredential credential = new NetworkCredential(Username, Password, Domain); WebdavSession session = new WebdavSession(credential); session.UserMailbox = MailServerURL; Resource resource = new Resource(session); if (UseFormsBasedAuthentication) resource.PerformFormsBasedAuthentication(https://owa.domain.company.org/[email protected]/Inbox"); Mailbox myMailbox = resource.Mailbox; Calling the “resource.Mailbox” raises the following exception: --- System.Net.WebException: The remote server returned an error: (405) Method Not Allowed. at System.Net.HttpWebRequest.GetResponse() at Independentsoft.Webdav.Exchange.Resource.a(String A_0, PropertyName[] A_1) at Independentsoft.Webdav.Exchange.Resource.e(String A_0) at Independentsoft.Webdav.Exchange.Resource.get_Mailbox() at Any helps will be more than appreciated. Thanks

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• Postgresql 8.4 reading OID style BLOBs with Hibernate

  - by peter

  I am getting this weird case when querying Postgres 8.4 for some records with Blobs (of type OIDs) with Hibernate. The query does return all right but when my code wants to read the content of the BLOB with the simple code below, it gets 0 bytes back public static byte[] readBlob(Blob blob) throws Exception { InputStream is = null; try { is = blob.getBinaryStream(); return org.apache.commons.io.IOUtils.toByteArray(is); } finally { if (is != null) try { is.close(); } catch(Exception e) {} } } Funny think is that I am getting this behavior only since I've started adding more then one such records to the table. The underlying JDBC library is type 3 (postgresq 8.4-701). Can someone give me a hint as to how to solve this issue? Thanks Peter

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• How do I access a tomcat 5.5 installation via localhost running on Virtual PC 2007?

  - by MetroidFan2002

  I have a tomcat installation of 5.5 up and running on a Virtual PC with a fresh XP pro SP3. Launching tomcat gives the standard messages: INFO: Find registry server-registry.xml at classpath resource Apr 12, 2010 11:43:44 AM org.apache.catalina.startup.Catalina start INFO: Server startup in 3576 ms However, I cannot for the life of me connect to http://localhost:8080. I've also tried http://127.0.0.1:8080 with no success. This is on the virtual PC itself that I cannot connect to the server - I haven't bothered to try it on the host machine. Can anyone provide any information on why this may be happening? It's a fresh install of tomcat using Sun's JRE 5.0 (I know, EOL, technical requirements make me have to use 5.0 and not a newer JRE).

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• java "File not found" when using commons-configuration XMLConfiguration with Tomcat

  - by Bruno Shine

  Hi all, I'm building two apps that uses commons-configuration XMLConfiguration. Since the apps are related, I've build another project, called commons, that has a custom configuration manager that initializes the XMLConfiguration like so: config = new XMLConfiguration("conf/config.xml"); What happens is that the "command-line" app works fine, loading the configuration file. But when I try to use my custom configuration manager on a webapp (using tomcat) I get a "org.apache.commons.configuration.ConfigurationException: Cannot locate configuration source". I've placed the conf directory on the WEB-INF folder, the root folder and the META-INF folder. I've also tried with "/conf/config.xml", "./conf/config.xml" and "../conf/config.xml". The only time I got this to work - on the web app - was using a absolute path. What am I missing? Thanks, Bruno

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• Spring security access with multiple roles

  - by Evgeny Makarov

  I want to define access for some pages for user who has one of following roles (ROLE1 or ROLE2) I'm trying to configure this in my spring security xml file as following: <security:http entry-point-ref="restAuthenticationEntryPoint" access-decision-manager-ref="accessDecisionManager" xmlns="http://www.springframework.org/schema/security" use-expressions="true"> <!-- skipped configuration --> <security:intercept-url pattern="/rest/api/myUrl*" access="hasRole('ROLE1') or hasRole('ROLE2')" /> <!-- skipped configuration --> </security:http> I've tried various ways like: access="hasRole('ROLE1, ROLE2')" access="hasRole('ROLE1', 'ROLE2')" access="hasAnyRole('[ROLE1', 'ROLE2]')" etc but nothing seems to be working. I'm keep getting exception java.lang.IllegalArgumentException: Unsupported configuration attributes: or java.lang.IllegalArgumentException: Failed to parse expression 'hasAnyRole(['ROLE1', 'ROLE2'])' how should it be configured? Thanks

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• Contracts vs Exceptions

  - by devoured elysium

  Let's assume I have the following code: public class MainClass { public static void main(String[] args) { System.out.println(sumNumbers(10, 10)); } //@requires a >= 10; //@ensures \result < 0; public static int sumNumbers(int a, int b) { return a+b; } } I can make 2 things here: Use Code Contracts (in this case, what is in comments). When sumNumbers is run and a < 10, it will throw immediatly an exception (although it doesn't seem to be very descriptive): Exception in thread "main" org.jmlspecs.jmlrac.runtime.JMLInternalNormalPostconditionError: by method MainClass.sumNumbers at MainClass.sumNumbers(MainClass.java:500) at MainClass.internal$main(MainClass.java:9) at MainClass.main(MainClass.java:286) or... Throw an exception. The exception can be as descriptive as I want. I'd also to check in the end of the function to see whenever the post conditions are true or not. Which would you use here and why?

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• Parsing atom/rss feed containing multiple <link> tags with Haml on RoR

  - by fenderplayer

  So, firstly, heres an atom feed snippet which i am trying to parse: // http://somelink.com/atom <feed xmlns="http://www.w3.org/2005/Atom"> <entry> <title>Title Here</title> <link href="http://somelink.com/link1&amp;amp;ref=rss" rel="alternate" /> <link href="http://somelink.com/link2&amp;amp;ref=rss" rel="tag:somelink.com/apply_url"/> ... </entry> i pull the atom feed like so, // In controller index method @rss = SimpleRSS.parse open('http://somelink.com/atom') Then i output the response in the view, which i am writing using haml, as follows: - @rss.entries.each do |item| .title-div = item.title .title-link = item.link //outputs the first link I could run a second loop for the links but is there a way to get the second link without it? Like reading the "rel" attribute and outputting the correct link? How do i do this in haml/rails?

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• Links to official style guides

  - by User1

  C++ has several types of styles: MFC, Boost, Google, etc. I would like to examine these styles and determine which one is best for my projects, but I want to read from the official style guidebook. Does anyone have an official guide that they typically use? Here are two that I found. I bet there are more: http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml http://www.boost.org/development/requirements.html Note: This is NOT a discussion about which styleis best..only a call for official style guides that people currently use. Please refrain from bashing other style guides that you don't like. Side question: Is there a good tool that can examine source code and tell if it matches a given style guide?

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• Problem with Apache Commons Id UUID Version 1 generation

  - by Pekka Mattila

  My problem is to generate version 1 UUIDs. We use Jetty 6.x, Maven (to start Jetty among other things) and Apache Commons ID (to generate UUID version 1 from the current time). Apache Commons ID requires a configuration file that is told to the JVM, using a parameter, e.g. 'org.apache.commons.id.uuid.config.resource.filename=commons-id-uuid.xml'. I checked the Apache Commons ID code and it tries to find the file from the classpath. Jetty's documentation states that WEB-INF/lib and WEB-INF/classes are in the classpath. The 'commons-id-uuid.xml' can be found from the deployed war file from the root of WEB-INF/classes directory but Jetty cannot load it: Message: java.lang.RuntimeException: java.lang.IllegalStateException: commons-id-uuid.xml loaded as system resource is null Jetty was started using the following command: mvn jetty:run -Dorg.apache.commons.id.uuid.config.resource.filename=commons-id-uuid.xml Any idea what is going wrong? We just need to generate UUID version 1 identifiers. Any suggestions?

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• plotting results of hierarchical clustering ontop of a matrix of data in python

  - by user248237

  How can I plot a dendrogram right on top of a matrix of values, reordered appropriately to reflect the clustering, in Python? An example is in the bottom of the following figure: http://www.coriell.org/images/microarray.gif I use scipy.cluster.dendrogram to make my dendrogram and perform hierarchical clustering on a matrix of data. How can I then plot the data as a matrix where the rows have been reordered to reflect a clustering induced by the cutting the dendrogram at a particular threshold, and have the dendrogram plotted alongside the matrix? I know how to plot the dendrogram in scipy, but not how to plot the intensity matrix of data with the right scale bar next to it. Any help on this would be greatly appreciated.

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• SAX Parse Exception

  - by Anand

  Hi, I am using JMS Messaging in my java program. My messages are coming from IBM Main Frame and the messages are xml files. Mainframe pushwa messages that is xml files to the queue But when the java program reads the messages from the queue an additional character "?" gets added in front of the xml file. For example a file like this: <?xml version="1.0" encoding="UTF-8"?> becomes ?<?xml version="1.0" encoding="UTF-8"?> when I read the message from the queue. And when I try to parse this I catch the following exception SAX Exception org.xml.sax.SAXParseException: Content is not allowed in trailing section. Content is not allowed in trailing section What could be the reason for this additional character getting added ?

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• Migrate existing ROR app to GAE

  - by zengr

  I have managed to run a basic rails app1 on App Engine using: http://gist.github.com/268192 So, on my basic app2, I install CE, which works fine on local machine. (communityengine.org) But, when I follow the same steps on my actual app2, where community_engine plugin is installed and all the gems are frozen, the app engine installer script asks for to over write various files like boot.rb, routes.rb, which I don't allow. So, as expected, when I publish the rails + ce app to GAE, it's not published and it also screws the local installation of CE on app2. So, the problem is obvious, CE uses ActiveRecord, and GAE uses DataMapper. So, my question can also be rephrased as: Can we migrate an existing ROR App using Active Record to GAE which uses DataMapper? PS: This is my first project on ROR and GAE.

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