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• How to serve tiff WMS imagery through GeoServer

  - by mikem419

  Ok so I am new to the GeoServer/database world. I am a student intern and I have been given the task of setting up a WMS using GeoServer. I have never done any database work before this so bare with me if my questions leave out important information. I am using GeoServer 2.0.1 in standalone mode (downloaded using Jetty) with PostgreSQL 8.4 installed. I went through nyc_roads and nyc_buildings install demo in the GeoServer documentation but I still do not understand how I should go about serving up some test images. I noticed that the nyc_roads setup included a .sql file that was responsible for setting up the nyc_buildings database. I do not know how/where this file was generated. Our test images are .tiff and .jpeg. I have successfully been able to do a WMS call on the local GeoServer machine, and have opened the included demo imagery. I now wish to add these .tiff and .jpeg images to GeoServer and access them through WMS. I have tried copying the images to the GeoServer data directory,adding a new data store, and layers, but I always receive an error regarding the "input stream." Again I am very sorry if I am leaving out allot of vital information, this is as much as I know. thanks!

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• Windows Series Phone 7 "Cloud"

  - by user275561

  I have been reading up on "Cloud computing" on here and still not getting it. Basically I want to develop for the WP7 http://msdn.microsoft.com/en-us/library/ff402531%28v=VS.92%29.aspx#AppPlat_Overview_Arch Now it mentions everything as being in the "Cloud". Is any server just a cloud? If i have a WCF service or wsdl on my server. Can I consider myself that "Cloud"? Or is there something that a server emits that checks whether or not it is a cloud?

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• Workaround for GNU Make 3.80 eval bug

  - by bengineerd

  I'm trying to create a generic build template for my Makefiles, kind of like they discuss in the eval documentation. I've run into a known bug with GNU Make 3.80. When $(eval) evaluates a line that is over 193 characters, Make crashes with a "Virtual Memory Exhausted" error. The code I have that causes the issue looks like this. SRC_DIR = ./src/ PROG_NAME = test define PROGRAM_template $(1)_SRC_DIR = $$(SRC_DIR)$(1)/ $(1)_SRC_FILES = $$(wildcard $$($(1)_SRC_DIR)*.c) $(1)_OBJ_FILES = $$($(1)_SRC_FILES):.c=.o) $$($(1)_OBJ_FILES) : $$($(1)_SRC_FILES) # This is the problem line endef $(eval $(call PROGRAM_template,$(PROG_NAME))) When I run this Makefile, I get gmake: *** virtual memory exhausted. Stop. The expected output is that all .c files in ./src/test/ get compiled into .o files (via an implicit rule). The problem is that $$($(1)_SRC_FILES) and $$($(1)_OBJ_FILES) are together over 193 characters long (if there are enough source files). I have tried running the make file on a directory where there is only 2 .c files, and it works fine. It's only when there are many .c files in the SRC directory that I get the error. I know that GNU Make 3.81 fixes this bug. Unfortunately I do not have the authority or ability to install the newer version on the system I'm working on. I'm stuck with 3.80. So, is there some workaround? Maybe split $$($(1)_SRC_FILES) up and declare each dependency individually within the eval?

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• XML parse node value as string

  - by bharathi

  My xml file is look like this . I want to get the value node text content as like this . <property regex=".*" xpath=".*"> <value> 127.0.0.1 </value> <property regex=".*" xpath=".*"> <value> val <![CDATA[ <Valve className="org.tomcat.AccessLogValve" exclude="PASSWORD,pwd,pWord,ticket" enabled="true" serviceName="zohocrm" logDir="../logs" fileName="access" format="URI,&quot;PARAM&quot;,&quot;REFERRER&quot;,TIME_TAKEN,BYTES_OUT,STATUS,TIMESTAMP,METHOD,SESSION_ID,REMOTE_IP,&quot;INTERNAL_IP&quot;,&quot;USER_AGENT&quot;,PROTOCOL,SERVER_NAME,SERVER_PORT,BYTES_IN,ZUID,TICKET_DIGEST,THREAD_ID,REQ_ID"/> ]]> test </value> </property> I want to get text as order they specified in a file . Here is my java code . Document doc = parseDocument("properties.xml"); NodeList properties = doc.getElementsByTagName("property"); for( int i = 0 , len = properties.getLength() ; i < len ; i++) { Element property = (Element)properties.item(i); //How can i proceed further . } Output Expected : Node 1 : 127.0.0.1 Node 2 : val <Valve className="org.tomcat.AccessLogValve" exclude="PASSWORD,pwd,pWord,ticket" enabled="true" serviceName="zohocrm" logDir="../logs" fileName="access" format="URI,&quot;PARAM&quot;,&quot;REFERRER&quot;,TIME_TAKEN,BYTES_OUT,STATUS,TIMESTAMP,METHOD,SESSION_ID,REMOTE_IP,&quot;INTERNAL_IP&quot;,&quot;USER_AGENT&quot;,PROTOCOL,SERVER_NAME,SERVER_PORT,BYTES_IN,ZUID,TICKET_DIGEST,THREAD_ID,REQ_ID"/> test Please suggest your views .

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• C++ help with getline function with ifstream

  - by John

  So I am writing a program that deals with reading in and writing out to a file. I use the getline() function because some of the lines in the text file may contain multiple elements. I've never had a problem with getline until now. Here's what I got. The text file looks like this: John Smith // Client name 1234 Hollow Lane, Chicago, IL // Address 123-45-6789 // SSN Walmart // Employer 58000 // Income 2 // Number of accounts the client has 1111 // Account Number 2222 // Account Number ifstream inFile("ClientInfo.txt"); if(inFile.fail()) { cout << "Problem opening file."; } else { string name, address, ssn, employer; double income; int numOfAccount; getline(inFile, name); getline(inFile, address); // I'll stop here because I know this is where it fails. When I debugged this code, I found that name == "John", instead of name == "John Smith", and Address == "Smith" and so on. Am I doing something wrong. Any help would be much appreciated.

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• Error Ant Build/deploy to websphere 7.0

  - by adisembiring

  Hi I'm trying to build/deploy war to websphere process server 7.0. and I run on windows environment. I use http://illegalargumentexception.blogspot.com/2008/08/ant-automated-deployment-to-websphere.html as my reference. and http://illegalargumentexception.googlecode.com/svn/trunk/code/java/WebSphereAntFiles/ as my sample code to deployed. this is my buil.properies is ? #build properties mywebappear=D:/data/code/WebSphereAntFiles/scripts/test/mywebappEAR.ear #WAS6 install directory was_home=C:/IBM/WID7_WTE/runtimes/bi_v7 #server name (see cell/node/server; e.g. "server1") was_server=server1 #user + password; for use when security is enabled was_user=admin was_password=admin #stops scripts on problem was_failonerror=true #virtual host was_virtualhost=default_host #Absolute path to EAR file #was_ear=fooEAR.ear #Name of the enterprise application #was_appname=fooEAR this is my console while I trying to build with ws_ant.bat [wsDefaultBindings] mywebapp.war [wsDefaultBindings] <virtual-host> --> default_host [wsDefaultBindings] [wsDefaultBindings] ------------------------ [wsDefaultBindings] Saving EAR File to directory [wsDefaultBindings] Saved EAR File to directory Successfully test_wsStartServer: WAS_wsStartServer: depCheck: depCheck: [startServer] ADMU0116I: Tool information is being logged in file [startServer] C:\IBM\WID7_WTE\runtimes\bi_v7\profiles\qwps\logs\server1\startServer.log [startServer] ADMU0128I: Starting tool with the qwps profile [startServer] ADMU3100I: Reading configuration for server: server1 [startServer] ADMU3028I: Conflict detected on port 8880. Likely causes: a) An instance of [startServer] the server server1 is already running b) some other process is [startServer] using port 8880 [startServer] ADMU3027E: An instance of the server may already be running: server1 [startServer] ADMU0111E: Program exiting with error: [startServer] com.ibm.websphere.management.exception.AdminException: ADMU3027E: An [startServer] instance of the server may already be running: server1 [startServer] ADMU1211I: To obtain a full trace of the failure, use the -trace option. [startServer] ADMU0211I: Error details may be seen in the file: [startServer] C:/IBM/WID7_WTE/runtimes/bi_v7/profiles/qwps\logs\server1\startServer.log BUILD FAILED D:\data\code\WebSphereAntFiles\scripts\test\build.xml:68: The following error occurred while executing this line: D:\data\code\WebSphereAntFiles\scripts\was\wsStartServer.xml:49: Java returned: -1

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• Transition from 2D to 3D later in game development

  - by Axarydax

  Hi, I'd like to work on a game, but for rapidly prototyping it, I'd like to keep it as simple as possible, so I'd do everything in top-down 2D in GDI+ and WinForms (hey, I like them!), so I can concentrate on the logic and architecture of the game itself. I thinking about having the whole game logic (server) in one assembly, where the WinForms app would be a client to that game, and if/when the time is right, I'd write a 3D client. I am tempted to use XNA, but I haven't really looked into it, so I don't know if it won't take too much time getting up to speed - I really don't want to spent much time doing other stuff than the game logic, at least while I have the inspiration. But I wouldn't have to abandon everything and transfer to new platform when transitioning from 2D to 3D. Another idea is just to get over it and learn XNA/Unity/SDL/something at least to that level so I can make the same 2D version as I could in GDI+, and I won't have to worry about switching frameworks anymore. Let's just say that the game is the kind where you watch a dude from behind, you run around the gameworld and interact with objects. So the bird's eye perspective could be doable for now. Thanks.

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• Using a DataSet instead of custom business entities in soa and n-tier architecture

  - by kathy

  I’m working on a large and a high volume transactional enterprise application which has been designed using n-tire application architecture .And it was developed in the .NET platform utilizing C#,VB.NEt, Framework 3.5, ObjectDataSources, DataSet, WCF, asp.net update panel, JavaScript ,JSON, 3rd Party tools. The application is supposed to accomplish a really scalable / easily maintained / robust application / integrations, and to make sure that my services are created using a format that can be understood by other systems. The problem is, this application is about 70% complete but now I was wondering if the following would cause us future issues, I’m using a DataSet and a DataTable to (get /set) the data (form /to) the stored procedure in the database using the ObjectDataSources and was wondering if this would prevent my application from achieving the above goals. Actually, I am not anti-OO. I write lots of classes for different purposes, but I didn’t use the entity objects(custom business entities) instead of the previous way because I have a large database that may contain 50 tables and I was just afraid to create entities for each table and then in the future if I need to change the schema of the database, it might cause a huge affect on the application ?

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• Loading a RSA private key from memory using libxmlsec

  - by ereOn

  Hello, I'm currently using libxmlsec into my C++ software and I try to load a RSA private key from memory. To do this, I searched trough the API and found this function. It takes binary data, a size, a format string and several PEM-callback related parameters. When I call the function, it just stucks, uses 100% of the CPU time and never returns. Quite annoying, because I have no way of finding out what is wrong. Here is my code: d_xmlsec_dsig_context->signKey = xmlSecCryptoAppKeyLoadMemory( reinterpret_cast<const xmlSecByte*>(data), static_cast<xmlSecSize>(datalen), xmlSecKeyDataFormatBinary, NULL, NULL, NULL ); data is a const char* pointing to the raw bytes of my RSA key (using i2d_RSAPrivateKey(), from OpenSSL) and datalen the size of data. My test private key doesn't have a passphrase so I decided not to use the callbacks for the time being. Has someone already done something similar ? Do you guys see anything that I could change/test to get forward on this problem ? I just discovered the library on yesterday, so I might miss something obvious here; I just can't see it. Thank you very much for your help.

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• Backend raising (INotify)PropertyChanged events to all connected clients?

  - by Jörg Battermann

  One of our 'frontend' developers keeps requesting from us backend developers that the backend notifies all connected clients (it's a client/server environment) of changes to objects. As in: whenever one user makes a change, all other connected clients must be notified immediately of the change. At the moment our architecture does not have a notification system of that kind and we don't have a sort of pub/sub model for explicitly chosen objects (e.g. the one the frontend is currently implementing).. which would make sense in such a usecase imho, but obviously requires extra implementation. However, I thought frontends typically check for locks for concurrently existing user changes on the same object and rather pull for changes / load on demand and in the background rather than the backend pushing all changes to all clients for all objects constantly.. which seems rather excessive to me. However, it's being argumented that e.g. the MS Entity Framework does in fact publish (INotify)PropertyChanged not only for local changes, but for all such changes including other client connections, but I have found no proof or details regarding this. Can anyone shed some light into this? Do other e.g. ORMs etc provide broadcasted (INotify)PropertyChanged events on entities?

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• java.lang.ClassNotFoundException

  - by user341493

  Hey everyone, I have a java project that I'm working on which was working until a few days ago. I'm not sure what I did to my Eclipse set-up to hose it but now I'm getting a java.lang.ClassNotFoundException when I try to run some code that accesses the google finance api. I've built a small test application that uses the google finance api on its own and that seems to work. So, I think this is a project specific problem. Any help would be greatly appreciated. Here's the stack trace: `ptolemy.kernel.util.IllegalActionException: in .RandomSearch.manager Because: com/google/common/collect/Maps at ptolemy.actor.Manager.execute(Manager.java:472) at ptolemy.actor.Manager.run(Manager.java:1119) at ptolemy.actor.Manager$3.run(Manager.java:1160) Caused by: java.lang.NoClassDefFoundError: com/google/common/collect/Maps at com.google.gdata.wireformats.AltRegistry.(AltRegistry.java:118) at com.google.gdata.wireformats.AltRegistry.(AltRegistry.java:100) at com.google.gdata.client.Service.(Service.java:546) at AtomicBroadcast.GoogleFinance.GooglePortfolioReader.fire(GooglePortfolioReader.java:108) at ptolemy.domains.de.kernel.DEDirector.fire(DEDirector.java:568) at ptolemy.actor.CompositeActor.fire(CompositeActor.java:458) at ptolemy.actor.Manager.iterate(Manager.java:714) at ptolemy.actor.Manager.execute(Manager.java:349) ... 2 more Caused by: java.lang.ClassNotFoundException: com.google.common.collect.Maps at java.net.URLClassLoader$1.run(URLClassLoader.java:217) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at java.lang.ClassLoader.loadClass(ClassLoader.java:319) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) at java.lang.ClassLoader.loadClass(ClassLoader.java:264) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:332) ... 10 more Caused by: java.lang.NoClassDefFoundError: com/google/common/collect/Maps at com.google.gdata.wireformats.AltRegistry.(AltRegistry.java:118) at com.google.gdata.wireformats.AltRegistry.(AltRegistry.java:100) at com.google.gdata.client.Service.(Service.java:546) at AtomicBroadcast.GoogleFinance.GooglePortfolioReader.fire(GooglePortfolioReader.java:108) at ptolemy.domains.de.kernel.DEDirector.fire(DEDirector.java:568) at ptolemy.actor.CompositeActor.fire(CompositeActor.java:458) at ptolemy.actor.Manager.iterate(Manager.java:714) at ptolemy.actor.Manager.execute(Manager.java:349) at ptolemy.actor.Manager.run(Manager.java:1119) at ptolemy.actor.Manager$3.run(Manager.java:1160) Caused by: java.lang.ClassNotFoundException: com.google.common.collect.Maps at java.net.URLClassLoader$1.run(URLClassLoader.java:217) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at java.lang.ClassLoader.loadClass(ClassLoader.java:319) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) at java.lang.ClassLoader.loadClass(ClassLoader.java:264) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:332) ... 10 more`

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• C# BackgroundWorker skips DoWork and goes straight to RunWorkerCompleted

  - by mr_man

  I'm new with C# so go easy on me! So far - I have a console app that listens for client connections and replies to the client accordingly. I also have a WPF form with a button and a text box. The button launches some code to connect to the server as a BackgroundWorker, which then waits for a response before appending it to the end of the text box. This works great, once. Sometimes twice. But then it kept crashing - turns out that the DoWork block wasn't being called at all and it was going straight to RunWorkerCompleted. Of course, the .result is blank so trying to convert it to a string fails. Is this a rookie mistake? I have tried searching the internet for various ways of saying the above but haven't come across anything useful... This is the code so far: http://pastebin.com/ZQvCFqxN - there are so many debug outputs from me trying to figure out exactly what went wrong. This is the result of the debug outputs: http://pastebin.com/V412mppX Any help much appreciated. Thanks! EDIT: The relevant code post-fix (thanks to Patrick Quirk below) is: public void dorequest(string query) { request = new BackgroundWorker(); request.WorkerSupportsCancellation = true; request.WorkerReportsProgress = true; request.ProgressChanged += request_ProgressChanged; request.DoWork += request_DoWork; request.RunWorkerCompleted += request_RunWorkerCompleted; request.RunWorkerAsync(query); }

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• .NET Process.Kill() in a safe way

  - by Orborde

  I'm controlling a creaky old FORTRAN simulator from a VB.NET GUI, using redirected I/O to communicate with the simulator executable. The GUI pops up a "status" window with a progress bar, estimated time, and a "STOP" button (Button_Stop). Now, I want the Button_Stop to terminate the simulator process immediately. The obvious way to do this is to call Kill() on the Child Process object. This gives an exception if it's done after the process has exited, but I can test whether the process is exited before trying to kill it, right? OK, so I do the following when the button is clicked: If Not Child.HasExited Then Child.Kill() Button_Stop.Enabled = False End If However, what if the process happens to exit between the test and the call to Kill()? In that case, I get an exception. The next thing to occur to me was that I can do Button_Stop.Enabled = False in the Process.Exited event handler, and thus prevent the Child.Kill() call in the Button_Stop.Clicked handler. But since the Process.Exited handler is called on a different thread, that still leaves the following possible interleaving: Child process exits. Process.Exited fires, calls Invoke to schedule the Button_Stop.Enabled = False User clicks on Button_Stop, triggering Child.Kill() Button_Stop.Enabled = False actually happens. An exception would then be thrown on step 3. How do I kill the process without any race conditions? Am I thinking about this entirely wrong?

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• Weird error running com-exposed assembly

  - by Bernabé Panarello

  I am facing the following issue when deploying a com-exposed assembly to my client's. The COM component should be consummed by a vb6 application. Here's how it's done 1) I have one c# project which has a class with a couple of methods exposed to COM 2) The project has references to multiple assemblies 3) I compile the project, generating a folder (named dllcom) that contains the assembly plus all the referenced dlls 4) I include in the folder a .bat which does the following: regasm /u c:\dllcom\LibInsertador.dll del LibInsertador.tlb regasm c:\dllcom\LibInsertador.dll /tlb:c:\dllcom\LibInsertador.tlb /codebase c:\dllcom\ pause 5) After running the bat locally in many workstations of my laboratory, i'm able to consume the generated tlb from my vb6 application without any problems. I'm even able to update the dll by only means of running this bat, without having to recompile the vb6 application. I mean that im not having issues of vb6 fiding and invoking the exposed com object. The problem 6) I send the SAME FOLDER to my client 7) They execute the .bat locally, without any errors 8) They execute the vb6 application, vb6 finds the main assembly, the .net code seems to run correctly (it's even able to generate a log file) until it has to intantiate it's first referenced assembly. Then, they get the following exception: "Could not load type 'GYF.Common.TypeBuilder' from assembly 'GYF_Common, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'." Where "GYF.Common" is an assembly referenced by LibInsertador and TypeBuilder is a class contained in GYF.Common. GYF.Common is not a signed assembly and it's not in the GAC, just in the same folder with Libinsertador. According to .net reflector, the version is correct. ¿Any ideas about what could be happening?

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• Java NIO (Netty): How does Encryption or GZIPping work in theory (with filters)

  - by Tom

  Hello Experts, i would be very thankfull if you can explain to me, how in theory the "Interceptor/Filter" Pattern in ByteStreams (over Sockets/Channels) work (in Asynchronous IO with netty) in regard to encryption or compression of data. Given I have a Filter that does GZIPPING. How is this internally implemented? Does the Filter "collect" so many bytes form the channel, that this is a usefull number of bytes that can then be en/decoded? What is in general the minimal "blocksize(data to encode/decode in a chunk)" of socket based gzipping? Does this "blocksize" have to be negotiated in advance between server and client? What happens if the client does not send enough data to "fill" the blocksize (due to a network conquestion) but does not close the connection. Does this mean the other side will simply wait until it gets enough bytes to decode or until a timeout occoures...How is the Filter pattern the applied? The compression filter will de/compress the blocksize of bytes and then store them again in the same buffer would (in the case of netty) i normally be using the ChannelHanlderContext to pass the de/encoded data to the next filter?... Any explanations/links/tutorials (for beginners;-) will be very much appreciated to help me understand how for example encryption/compressing are implemented in socket based communication with filters/interceptor pattern. thank you very much tom

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• How do I manage application configuration in ASP.NET?

  - by GlennS

  I am having difficulty with managing configuration of an ASP.Net application to deploy for different clients. The sheer volume of different settings which need twiddling takes up large amounts of time, and the current configuration methods are too complicated to enable us to push this responsibility out to support partners. Any suggestions for better methods to handle this or good sources of information to research? How we do things at present: Various xml configuration files which are referenced in Web.Config, for example an AppSettings.xml. Configurations for specific sites are kept in duplicate configuration files. Text files containing lists of data specific to the site In some cases, manual one-off changes to the database C# configuration for Windsor IOC. The specific issues we are having: Different sites with different features enabled, different external services we have to talk to and different business rules. Different deployment types (live, test, training) Configuration keys change across versions (get added, remove), meaning we have to update all the duplicate files We still need to be able to alter keys while the application is running Our current thoughts on how we might approach this are: Move the configuration into dynamically compiled code (possibly Boo, Binsor or JavaScript) Have some form of diffing/merging configuration: combine a default config with a live/test/training config and a site-specific config

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• Recommended (remote) backup technique for SQL Compact?

  - by Cool Jon

  Hello. Is there a generally recommended approach to backing up an SQL CE/SQLite database over the Internet? The client source is .NET/Windows based, the backup destination runs Ubuntu. I am using a small SQL CE database and have been trying to figure out the most reasonable approach to doing this. The file size (in terms of transfer time/bandwidth) isn't a big deal. I had a look around, and so far the things I've given thought are: Online backup services (Dropbox, Mozy) Opening an FTP/SFTP connection Writing a custom protocol with public/private keys Unsure regarding #1 because I doubt they would like it if somebody transferred gigabytes of data using a POST; and they do not seem to offer native (or .NET) APIs. FTP/SFTP seems risky in terms of security and privileges (as the password/key would need to be stored on the client side). With the right user group/user privileges this may work. Custom protocol seems overkill, which is why I am hoping somebody has already defined a reasonable API for language/platform-independent backups over the Internet. Any hints S.O.?

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• Detecting duplicate values in a column of a Datatable while traversing through It

  - by Ashish Gupta

  I have a Datatable with Id(guid) and Name(string) columns. I traverse through the data table and run a validation criteria on the Name (say, It should contain only letters and numbers) and then adding the corresponding Id to a List If name passes the validation. Something like below:- List<Guid> validIds=new List<Guid>(); foreach(DataRow row in DataTable1.Rows) { if(IsValid(row["Name"]) { validIds.Add((Guid)row["Id"]); } } In addition to this validation I should also check If the name is not repeating in the whole datatable (even for the case-sensitiveness), If It is repeating, I should not add the corresponding Id in the List. Things I am thinking/have thought about:- 1) I can have another List, check for the "Name" in the same, If It exists, will add the corresponding Guild 2) I cannot use HashSet as that would treat "Test" and "test" as different strings and not duplicates. 3) Take the DataTable to another one where I have the disctict names (this I havent tried and the code might be incorrect, please correct me whereever possible) DataTable dataTableWithDistinctName = new DataTable(); dataTableWithDistinctName.CaseSensitive=true CopiedDataTable=DataTable1.DefaultView.ToTable(true,"Name"); I would loop through the original datatable and check the existence of the "Name" in the CopiedDataTable, If It exists, I wont add the Id to the List. Are there any better and optimum way to achieve the same? I need to always think of performance. Although there are many related questions in SO, I didnt find a problem similar to this. If you could point me to a question similar to this, It would be helpful. Thanks

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• JsonParseException on Valid JSON

  - by user2909602

  I am having an issue calling a RESTful service from my client code. I have written the RESTful service using CXF/Jackson, deployed to localhost, and tested using RESTClient successfully. Below is a snippet of the service code: @POST @Produces("application/json") @Consumes("application/json") @Path("/set/mood") public Response setMood(MoodMeter mm) { this.getMmDAO().insert(mm); return Response.ok().entity(mm).build(); } The model class and dao work successfully and the service itself works fine using RESTClient. However, when I attempt to call this service from Java Script, I get the error below on the server side: Caused by: org.codehaus.jackson.JsonParseException: Unexpected character ('m' (code 109)): expected a valid value (number, String, array, object, 'true', 'false' or 'null') I have copied the client side code below. To make sure it has nothing to do with the JSON data itself, I used a valid JSON string (which works using RESTClient, JSON.parse() method, and JSONLint) in the vars 'json' (string) and 'jsonData' (JSON). Below is the Java Script code: var json = '{"mood_value":8,"mood_comments":"new comments","user_id":5,"point":{"latitude":37.292929,"longitude":38.0323323},"created_dtm":1381546869260}'; var jsonData = JSON.parse(json); $.ajax({ url: 'http://localhost:8080/moodmeter/app/service/set/mood', dataType: 'json', data: jsonData, type: "POST", contentType: "application/json" }); I've seen the JsonParseException a number of times on other threads, but in this case the JSON itself appears to be valid (and tested). Any thoughts are appreciated.

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• OpenGL bitmap text fails after drawing polygon

  - by kaykun

  I'm using Win32 and OpenGL to to draw text onto a window. I'm using the bitmap font method, with wglUseFontBitmaps. Here is my main rendering function: glClear(GL_COLOR_BUFFER_BIT); glPushMatrix(); glColor3f(1.0f, 0.0f, 1.0f); glBegin(GL_QUADS); glVertex2f(0.0f, 0.0f); glVertex2f(128.0f, 0.0f); glVertex2f(128.0f, 128.0f); glVertex2f(0.0f, 128.0f); glEnd(); glPopMatrix(); glPushMatrix(); glColor3f(1.0f, 1.0f, 1.0f); glRasterPos2i(200, 200); glListBase(fontList); glCallLists(5, GL_UNSIGNED_BYTE, "Test."); glPopMatrix(); SwapBuffers(hDC); As you can see it's very simple and the only thing that it's supposed to do is draw a quadrilateral and draw the text "Test.". But the problem is that drawing a polygon seems to mess up any text operations I try to do after it. If I place the text drawing functions before the polygon, both the text and the polygon draw fine. Is there something I'm missing here? Edit: This problem only happens when the window is run in Fullscreen, by ChangeDisplaySettings. Any reason why this would be??

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• Jquery $.get against ASP.NET MVC not working in Opera and Firefox

  - by codelove

  Let me first put the code snippets here. I am just using the ASP.NET MVC project Visual Studio creates out of the box. So I am just putting the snippets I added to it: Site.master's head section: <head runat="server"> <title><asp:ContentPlaceHolder ID="TitleContent" runat="server" /></title> <script src="../../Scripts/jquery-1.3.2.min.js" type="text/javascript"></script> <link href="../../Content/Site.css" rel="stylesheet" type="text/css" /> <script src="../../Scripts/test.js" type="text/javascript"></script> <script type="text/javascript">$(document).ready(ready);</script> </head> Content of test.js: function ready(){ $.get("/Home/TestAjax", ajaxResponse); } function ajaxResponse(data){ alert("got response from server: " + data); } Method in HomeController: public String TestAjax() { if (Request.IsAjaxRequest()) { return "Got ajax request!"; } else { return "Non-ajax request"; } } Now the problem I am seeing in Firefox 3.5.30729 (Firebug) is when the ajax request goes out, IIS 7 on the remote box sends Http 302 back, which does the redirect and forces another get request, but it is not asynchronous. Opera also doesn't work so I assume it is the same problem. However, above code works just fine in IE 8, Chrome, and Safari. On localhost all of the above browsers work as expected including Firefox and Opera -- they all receive "Got ajax request!" as the response from the server. Anybody have any ideas what's going on here and how to fix it? I am looking for a real solution or at least explanation as to what is going on and why.

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• FancyURLOpener failing since moving to python 3.1.2

  - by Andrew Shepherd

  I had an application that was downloading a .CSV file from a password-protected website then processing it futher. I was using FancyURLOpener, and simply hardcoding the username and password. (Obviously, security is not a high priority in this particular instance). Since downloading Python 3.1.2, this code has stopped working. Does anyone know of the changes that have happened to the implementation? Here is a cut down version of the code: import urllib.request; class TracOpener (urllib.request.FancyURLopener) : def prompt_user_passwd(self, host, realm) : return ('andrew_ee', '_my_unenctryped_password') csvUrl='http://mysite/report/19?format=csv@USER=fred_nukre' opener = TracOpener(); f = opener.open(csvUrl); s = f.read(); f.close(); s; For the sake of completeness, here's the entire call stack: Traceback (most recent call last): File "C:\reporting\download_csv_file.py", line 12, in <module> f = opener.open(csvUrl); File "C:\Program Files\Python31\lib\urllib\request.py", line 1454, in open return getattr(self, name)(url) File "C:\Program Files\Python31\lib\urllib\request.py", line 1628, in open_http return self._open_generic_http(http.client.HTTPConnection, url, data) File "C:\Program Files\Python31\lib\urllib\request.py", line 1624, in _open_generic_http response.status, response.reason, response.msg, data) File "C:\Program Files\Python31\lib\urllib\request.py", line 1640, in http_error result = method(url, fp, errcode, errmsg, headers) File "C:\Program Files\Python31\lib\urllib\request.py", line 1878, in http_error_401 return getattr(self,name)(url, realm) File "C:\Program Files\Python31\lib\urllib\request.py", line 1950, in retry_http_basic_auth return self.open(newurl) File "C:\Program Files\Python31\lib\urllib\request.py", line 1454, in open return getattr(self, name)(url) File "C:\Program Files\Python31\lib\urllib\request.py", line 1628, in open_http return self._open_generic_http(http.client.HTTPConnection, url, data) File "C:\Program Files\Python31\lib\urllib\request.py", line 1590, in _open_generic_http auth = base64.b64encode(user_passwd).strip() File "C:\Program Files\Python31\lib\base64.py", line 56, in b64encode raise TypeError("expected bytes, not %s" % s.__class__.__name__) TypeError: expected bytes, not str

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• StackOverFlowException - but oviously NO recursion/endless loop

  - by user567706

  Hi there, I'm now blocked by this problem the entire day, read thousands of google results, but nothing seems to reflect my problem or even come near to it... i hope any of you has a push into the right direction for me. I wrote a client-server-application (so more like 2 applications) - the client collects data about his system, as well as a screenshot, serializes all this into a XML stream (the picture as a byte[]-array]) and sends this to the server in regular intervals. The server receives the stream (via tcp), deserializes the xml to an information-object and shows the information on a windows form. This process is running stable for about 20-25 minutes at a submission interval of 3 seconds. When observing the memory usage there's nothing significant to see, also kinda stable. But after these 20-25 mins the server throws a StackOverflowException at the point where it deserializes the tcp-stream, especially when setting the Image property from the byte[]-array. I thoroughly searched for recursive or endless loops, and regarding the fact that it occurs after thousands of sucessfull intervals, i could hardly imagine that. public byte[] ImageBase { get { MemoryStream ms = new MemoryStream(); _screen.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg); return ms.GetBuffer(); } set { if (_screen != null) _screen.Dispose(); //preventing well-known image memory leak MemoryStream ms = new MemoryStream(value); try { _screen = Image.FromStream(ms); //<< EXCEPTION THROWING HERE } catch (StackOverflowException ex) //thx to new CLR management this wont work anymore -.- { Console.WriteLine(ex.Message + Environment.NewLine + ex.StackTrace); } ms.Dispose(); ms = null; } } I hope that more code would be unnecessary, or it could get very complex... Please help, i have no clue at all anymore thx Chris

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• Starting a Blog using Microsoft.Net technologies

  - by manav inder

  I want to start a blog using Microsoft technologies. My primary reason is to get more in-sync with technologies which are very much in demand. It does not matter how steep is the learning curve as long I am willing to devote all the time in the world. There are lot going on like Microsoft WebAPI, Dot net nuke MVC SPA etc. Let me tell you what i know I have very good experience in developing database driven .net application using winforms and wpf. Average experience in asp.net and asp.net mvc. Good in entity framework, ado.net and wcf rest services. Good in IoC/DI.

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• Linq PredicateBuilder with conditional AND, OR and NOT filters.

  - by richeym

  We have a project using LINQ to SQL, for which I need to rewrite a couple of search pages to allow the client to select whether they wish to perform an and or an or search. I though about redoing the LINQ queries using PredicateBuilder and have got this working pretty well I think. I effectively have a class containing my predicates, e.g.: internal static Expression<Func<Job, bool>> Description(string term) { return p => p.Description.Contains(term); } To perform the search i'm doing this (some code omitted for brevity): public Expression<Func<Job, bool>> ToLinqExpression() { var predicates = new List<Expression<Func<Job, bool>>>(); // build up predicates here if (SearchType == SearchType.And) { query = PredicateBuilder.True<Job>(); } else { query = PredicateBuilder.False<Job>(); } foreach (var predicate in predicates) { if (SearchType == SearchType.And) { query = query.And(predicate); } else { query = query.Or(predicate); } } return query; } While i'm reasonably happy with this, I have two concerns: The if/else blocks that evaluate a SearchType property feel like they could be a potential code smell. The client is now insisting on being able to perform 'and not' / 'or not' searches. To address point 2, I think I could do this by simply rewriting my expressions, e.g.: internal static Expression<Func<Job, bool>> Description(string term, bool invert) { if (invert) { return p => !p.Description.Contains(term); } else { return p => p.Description.Contains(term); } } However this feels like a bit of a kludge, which usually means there's a better solution out there. Can anyone recommend how this could be improved? I'm aware of dynamic LINQ, but I don't really want to lose LINQ's strong typing.

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