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  • Spring security annotations with EL -- requires debug information compiled in?

    - by HDave
    I am considering using Spring Security annotations for my application, with the EL (expression language) feature. For example: @PreAuthorize("hasPermission(#contact, 'admin')") public void deletePermission(Contact contact, Sid recipient, Permission permission); I need the EL capability because I have built my own ACL implementation. However, to use this capability with the "#contact" type arguments, the Spring documentation says this: You can access any of the method arguments by name as expression variables, provided your code has debug information compiled in. This begs two questions: It is acceptable to have a production application commercially distributed with debug info in it? If not, is there any way around this? Thanks for any guidance on this!

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  • Sql Server Service Broker Conversation Groups

    - by Brian Hasden
    Can someone explain conversation groups in service broker? Currently, I'm using service broker to send messages from one SQL server to another. On the sending server, I'm trying to correlate the messages so they are processed in serial on the receiving side. Based on the documentation, conversation groups seem to be a perfect fit for this, but on the receiving server, the messages get assigned to a different conversation group from the one I specified when sending the message. I've search around the web and saw that this behavior seems to be intended (http://social.msdn.microsoft.com/forums/en-US/sqlservicebroker/thread/baf48074-6804-43ab-844a-cb28a6dce02b/), but then I'm confused about the usefulness of the syntax from (http://msdn.microsoft.com/en-us/library/ms178624.aspx) WAITFOR( GET CONVERSATION GROUP @conversation_group_id FROM [dbo].[ReceiveQueue] ) If the conversation group doesn't come across with the message from the sender and messages sent with the same conversation group id don't have the same conversation group id on the receive side, what's the point of the code above?

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  • Basic XStream Annotations

    - by jmcmahon
    Hello, I just started using XStream Annotations, and I am trying to figure out how to associate the annotations with the XStream object. From the documentation, it seems like this is the accepted method: XStream xstream = new XStream(new DomDriver()); xstream.processAnnotations(AnnotatedClass.class); My problem with this is that Eclipse isn't recognizing this as a valid method. Everything seems to be configured correctly in Eclipse because it shows me the rest of the methods that are in the XStream object. It's almost like Eclipse thinks it's an older version of xstream. I've tried running a Project Clean inside of Eclipse but that didn't fix anything. I've also tried downloading the XStream jar again which didn't help either. Versions: XStream 1.3.1, Eclipse 3.4, Java 6 Has anybody seen this strange behavior before, or have any ideas on how to fix it?

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  • Datanucleus/JDO Level 2 Cache on Google App Engine

    - by Thilo
    Is it possible (and does it make sense) to use the JDO Level 2 Cache for the Google App Engine Datastore? First of all, why is there no documentation about this on Google's pages? Are there some problems with it? Do we need to set up limits to protect our memcache quota? According to DataNucleus on Stackoverflow, you can set the following persistence properties: datanucleus.cache.level2.type=javax.cache datanucleus.cache.level2.cacheName={cache name} Is that all? Can we choose any cache name? Other sources on the Internet report using different settings. Also, it seems we need to download the DataNucleus Cache support plugin. Which version would be appropriate? And do we just place it in WEB-INF/lib or does it need more setup to activate it?

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  • http://java.sun.com/j2se/1.4.2/docs/api/org/w3c/dom/Document.html#getDoctype()

    - by Tom Brito
    The Document class have a getDoctype method but doesn't have a setDoctype. The documentation says: The DOM Level 2 does not support editing the Document Type Declaration. docType cannot be altered in any way, including through the use of methods inherited from the Node interface, such as insertNode or removeNode. and in my project I need to generate xml files with my specified doctypes. I've tryied to create my own DefaultNode, but it throws "DOMException: Method not supported" for the setters. Any idea?

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  • Jruby embedded modules and classes.

    - by James Moore
    Hey, I have a ruby file as follows: module Example class Myclass def t_st "Hello World!" end end end now if this was just a class I would be able to use the following java code: ScriptEngine jruby = new ScriptEngineManager().getEngineByName("jruby"); jruby.eval(new BufferedReader(new FileReader("example.rb"))); Object example = jruby.eval("myclass.new"); However, this class rests inside a module. Calling the same code as above produces the error: Exception in thread "main" org.jruby.embed.EvalFailedException: uninitialized constant myclass In addition, calling: Object example = jruby.eval("Example"); The module returns no error. So one would assume this follows the format for Ruby. Object example = jruby.eval("Example::myclass.new"); Again however, I get the same error as before. Can anyone help? As there is little documentation on JRuby? Thanks

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  • Using SCons as a build engine for distutils

    - by pygabriel
    I have a python package with some C code needed to build an extension (with some non-trivial building needs). I have used SCons as my build system because it's really good and flexible. I'm looking for a way to compile my python extensions with SCons ready to be distributed with distutils. I want that the user simply types setup.py install and get the extension compiled with SCons instead of the default distutils build engine. An idea that comes to mind is to redefine build_ext command in distutils, but I can't find extensive documentation for it. Any suggestion?

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  • Specific checkboxes checked in symfony 1.4

    - by Tom
    Hi, I'm able to do the following for all checkboxes in a set (in an action): $this->form->getWidget('some_form_field')->setAttribute('checked', 'checked'); ... but I'm unable to set specific checkboxes to ticked on the basis of data returned from the db. I'm after something like: $this->form->getWidget('some_form_field')->setAttributes(array(....)); ... where I can refer to the specific checkboxes to be ticked somehow, or pass an array to it. There's nothing in the symfony documentation on this specifically and I've had enough of trying a dozen combinations to get it work. Any help would be appreciated. Thanks.

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  • Ruby on Rails 2.3.5: update_all failing on ActiveRecord

    - by randombits
    I'm trying to update a collection of records in my database using ActiveRecord's update_all. Enter script/console. MyModel.update_all("reserved = 1", :order => 'rand()', :limit => 1000) ActiveRecord thinks order is a column, says it's unknown and throws an exception. According to the documentation though, my syntax looks sane. This is RoR 2.3.5. When doing MyModel.update_all("reserved = 1") alone, it works just fine. Also if I do MyModel.update_all("reserved = 1", "reserve_type = 2", :order = "rand()", :limit = 1000) = 0 0 rows affected. I'm simply trying to do: UPDATE MyModel SET reserved=1, reserve_type=2 ORDER BY RAND() LIMIT 1000

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  • What is the worst C#/.NET gotcha?

    - by MusiGenesis
    This question is similar to this one, but focused on C# and .NET. I was recently working with a DateTime object, and wrote something like this: DateTime dt = DateTime.Now; dt.AddDays(1); return dt; // still today's date! WTF? The intellisense documentation for AddDays says it adds a day to the date, which it doesn't - it actually returns a date with a day added to it, so you have to write it like: DateTime dt = DateTime.Now; dt = dt.AddDays(1); return dt; // tomorrow's date This one has bitten me a number of times before, so I thought it would be useful to catalog the worst C# gotchas.

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  • PostGreSQL - pgloader installation?

    - by KittyYoung
    Granted... this is a dumb question, but it's still a mystery to someone like me, whose never done it before... I'm trying to install pgloader, but I can't seem to find any documentation.... I'm running MAMP on MAC OS X. I've already installed the tcllib, and am about to do: wget http://pgfoundry.org/frs/download.php/233/pgloader-1.0.tar.gz tar zxvf pgloader-1.0.tar.gz I'm wondering what directory I need to actually untar pgloader into? Is there anything else that I need to do to get it to work?

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  • Creating an Equation Editor 3.0 equation in a Word 2003 document using a marco (or through the API)

    - by Sambatyon
    I think the title is fully descriptive now. Anyway, I need to generate a word document from my delphi application. It needs to choose from one of four different equations (with some specific parameters for each document). So far I have manage to create the whole document programmatically except the equation. Is it possible to create equations programmatically? if so, where is de API documentation from MS? if not, which solution can be used?

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  • phing and phpUnderControl ... working together

    - by Paul Hanssen
    Hi, Has anyone got these to work together seemlessly? I have tried, had some success using the plugin at http://phing.info/trac/wiki/Users/Documentation/CruiseControl, but have failed to: Get the metrics graphs working (nothing appears) Enable the "PMD" - project mess detection - reports Are there any other ant-specific commands that must (can) be run in addition to my phing build script? Also, the front page of the reports section dumps a heap of log information, and I'm trying to get rid of that too. Cheers for any help ... we are running phing 2.3.0 and phpUnderControl 0.4.7. Paul

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  • PLT Scheme URL dispatch

    - by Inaimathi
    I'm trying to hook up URL dispatch with PLT Scheme. I've taken a look at the tutorial and the server documentation. I can figure out how to route requests to the same servlets. Specific example: (define (start request) (blog-dispatch request)) (define-values (blog-dispatch blog-url) (dispatch-rules (("") list-posts) (("posts" (string-arg)) review-post) (("archive" (integer-arg) (integer-arg)) review-archive) (else list-posts))) (define (list-posts req) `(list-posts)) (define (review-post req p) `(review-post ,p)) (define (review-archive req y m) `(review-archive ,y ,m)) Assuming the above code running on a server listening 8080, localhost:8080/ goes to a page that says "list-posts". Going to localhost:8080/posts/test goes to a PLT "file not found" page (with the above code, I'd expect it to go to a page that says "review-post test"). It feels like I'm missing something small and obvious. Can anyone give me a hint?

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  • Authenticating a single request with httpclient 4.x

    - by scompt.com
    I have an HttpClient instance that's shared by a number of threads. I would like to use it to make a single authenticated request. Because only the single request should be authenticated, I don't want to modify the HttpClient instance as described in the documentation. Here's what I've worked out instead, which isn't working. From what I can tell, it doesn't look like the CredentialsProvider is being used at all. Any tips? HttpContext context = null; if(feedSpec.isAuthenticated()) { context = new BasicHttpContext(); CredentialsProvider credsProvider = new BasicCredentialsProvider(); credsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(feedSpec.getHttpUsername(), feedSpec.getHttpPassword())); context.setAttribute(ClientContext.CREDS_PROVIDER, credsProvider); context.setAttribute(ClientPNames.HANDLE_AUTHENTICATION, true); } HttpGet httpGet = new HttpGet(feedSpec.getUri()); HttpResponse httpResponse = httpClient.execute(httpGet, context);

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  • Using OpenVPN, yet netflix.com blocks access

    - by user837848
    I have set up an OpenVPN server on a VPS in the USA and configured it to route all clients traffic through it. Everything seems to work fine regarding the VPN connection in gerneral. All ip lookup sites show me the us server's ip address and even hulu.com works(it won't work if you are not in the usa). But for some reason netflix.com says "Sorry, Netflix is not available in your country yet.". So I thought that netflix probably uses some more sophisticated ways to determine your location beyond just your ip address. But I could not find a way to get it to work until I dropped the idea of using a VPN and instead connected to the server via a simple socks tunnel with ssh by running: ssh -D 9999 user@serverip All I had to do was changing the key network.proxy.socks_remote_dns in Firefox from false to true to prevent DNS leaks and setting up the socks proxy. Then I could finally watch netflix.com. As a result I concluded that there is nothing in the browser(or something like system timezone) that tells netflix the location, so it has to have something to do with the OpenVPN config. After that I used tcpdump to log all the traffic on the server's network interface venet0 (OpenVZ VPS), visited netflix.com on the client while first connected to the VPN and then connected via socks tunnel and afterwards compared both outputs. The only thing that caught my eye was that while using the socks tunnel the server mainly used ipv6 to connect to netflix whereas it only used ipv4 when the client was connected to the OpenVPN server. But I don't get how that could make such a difference. So what am I missing? Is there a way to configure OpenVPN to also use ipv6 to connect to a website although there is only an ipv4 connection between the VPS and the client? Here is the server.conf of the OpenVPN server (OpenVZ VPS) local serverip port 443 proto tcp dev tun ca ./easy-rsa2/keys/ca.crt cert ./easy-rsa2/keys/vps1.crt key ./easy-rsa2/keys/vps1.key # This file should be kept secret dh ./easy-rsa2/keys/dh1024.pem server 10.8.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt push "redirect-gateway def1 bypass-dhcp" push "dhcp-option DNS 8.8.8.8" push "dhcp-option DNS 8.8.4.4" client-to-client keepalive 10 120 tls-auth ta.key 0 # This file is secret cipher AES-256-CBC comp-lzo max-clients 4 user nobody group nogroup persist-key persist-tun status openvpn-status.log log-append openvpn.log verb 3 iptables forwarding iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o venet0 -j SNAT --to-source serverip (enabled ipv4 forwarding) I have tried everything always on a Win7 and a Debian client with only ipv4 connections and always made sure that they use the correct DNS server (tested with ipleak.net and tcpdump / wireshark). client.conf: client dev tun proto tcp remote serverip 443 resolv-retry infinite nobind persist-key persist-tun ca ca.crt cert client.crt key client.key ns-cert-type server tls-auth ta.key 1 cipher AES-256-CBC comb-lzo verb 3

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  • ANTLR JavaScript Target

    - by kunalsawlani
    Hello, I have been using ANTLR to generate a parser + tree grammar for a mark up language with Java target which works fine. Now I am trying to get the target in JavaScript to use it in my web browser. However, I have not been able to locate any good documentation on how to go about doing this. I am using eclipse with ANTLR IDE, and when i specify the language as JavaScript, I get the following errors. Multiple markers at this line (10): internal error: group JavaScript does not satisfy interface ANTLRCore: mismatched arguments on these templates [treeParser(grammar, name, scopes, tokens, tokenNames, globalAction, rules, numRules, bitsets, labelType, ASTLabelType, superClass, members, filterMode)] (10): internal error: java.util.NoSuchElementException: no such attribute: filterMode in template context [treeParser] If anyone could help me out with this or point me to some material which I could read about the JavaScript target with ANTLR, it would be great. Thanks

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  • Using boost::iostreams to parse a binary file byte by byte

    - by Zsol
    So I would like to parse a binary file and extract some data from it. The problem I am facing with this is that I need to convert a stream of chars to a stream of unsigned chars. Reading the boost documentation, it seems that boost::iostreams::code_converter should be the solution for this, so I tried this: typedef unsigned char uint8_t; typedef boost::iostreams::stream<boost::iostreams::code_converter< boost::iostreams::basic_array_source<uint8_t> >, std::codecvt<uint8_t, char, std::mbstate_t> > array_stream; The idea was to specify a codecvt with InternalType=uint8_t and ExternalType=char. Unfortunately this does not compile. So the question is: how do I convert a stream of chars to a stream of uint8_ts?

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  • algorithm for python itertools.permutations

    - by zaharpopov
    Can someone please explain algorithm for itertools.permutations routine in Python standard lib 2.6? I see its code in the documentation but don't undestand why it work? Thanks Code is: def permutations(iterable, r=None): # permutations('ABCD', 2) --> AB AC AD BA BC BD CA CB CD DA DB DC # permutations(range(3)) --> 012 021 102 120 201 210 pool = tuple(iterable) n = len(pool) r = n if r is None else r if r > n: return indices = range(n) cycles = range(n, n-r, -1) yield tuple(pool[i] for i in indices[:r]) while n: for i in reversed(range(r)): cycles[i] -= 1 if cycles[i] == 0: indices[i:] = indices[i+1:] + indices[i:i+1] cycles[i] = n - i else: j = cycles[i] indices[i], indices[-j] = indices[-j], indices[i] yield tuple(pool[i] for i in indices[:r]) break else: return

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  • Debugging in Maven?

    - by aduric
    Is it possible to launch a debugger such as jdb from maven? I have a pom.xml file that compiles the project successfully. However, the program hangs somewhere and I would really like to launch jdb or an equivalent debugger to see what's happening. I compile using mvn compile and launch using: mvn exec:java -Dexec.mainClass="com.mycompany.app.App" I was expecting something like: mvn exec:jdb -Dexec.mainClass="com.mycompany.app.App" to launch the debugger but, as usual, my expectations are incongruent with maven's philosophy. Also, I couldn't find any documentation (on Maven's website or google) to describe how debugging works. I suspect that I have to use some plugin.

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  • TMS320C64x Quick start reference for porgrammers

    - by osgx
    Hello Is thare any quickstart guide for programmers for writing DSP-accelerated appliations for TMS320C64x? I have a program with custom algorythm (not the fft, or usial filtering) and I want to accelerate it using multi-DSP coprocessor. So, how should I modify source to move computation from main CPU to DSPs? What limitations are there for DSP-running code? I have some experience with CUDA. In CUDA I should mark every function as being host, device, or entry point for device (kernel). There are also functions to start kernels and to upload/download data to/from GPU. There are also some limitations, for device code, described in CUDA Reference manual. I hope, there is an similar interface and a documentation for DSP.

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  • Changing postgres user password in a master-slave setup

    - by NRS
    We have PITR setup and WAL shipping enabled. We would like to change the password for the user postgres. The process is simple enough. However, since we cannot connect to the SLAVE how would we make sure all passwords are in synch? Would temporarily disabling WAL shipping allow me to connect to the slave to change the password there? I cant seem to find documentation on a clean way to implement this password change and I don't have a test environment.

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  • telerik mvc grid access cell data to enable columns.Command

    - by AZee
    Hi! I can't seem to find a way to reference the value in a column in the grid, in my case it is the StatusId. Based on the cell value in this row, for the StatusId, I need to return a true or false to the method ".Visible(???)". It would be nice to find the answer in the documentation online but I haven't been able to. I find it hard to believe that I would be the first person who ever needed this functionality. I would be most appreciative of any assistance since no one in the telerik forums know. .Columns(columns => { columns.Command(commands => { commands.Edit().ButtonType(ButtonType); commands.Delete().ButtonType(ButtonType); }).Width(90).Visible(???); Thanks! AZee

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  • dlopen() with dependencies between libraries

    - by peastman
    My program uses plugins, that are loaded dynamically with dlopen(). The locations of these plugins can be arbitrary, so they aren't necessarily in the library path. In some cases, one plugin needs to depend on another plugin. So if A and B are dynamic libraries, I'll first load A, then load B which uses symbols defined in A. My reading of the dlopen() documentation implies that if I specify RTLD_GLOBAL this should all work. But it doesn't. When I call dlopen() on the second library, it fails with an error saying it couldn't find the first one (which had already been loaded with dlopen()): Error loading library /usr/local/openmm/lib/plugins/libOpenMMRPMDOpenCL.dylib: dlopen(/usr/local/openmm/lib/plugins/libOpenMMRPMDOpenCL.dylib, 9): Library not loaded: libOpenMMOpenCL.dylib Referenced from: /usr/local/openmm/lib/plugins/libOpenMMRPMDOpenCL.dylib Reason: image not found How can I make this work?

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  • Handling messages for window from other process

    - by MK
    I'm developing a C# WPF application that reparents the main window of another application using a call to Win32 SetParent(). The handle to this out-of-process child window is wrapped by a class named FormHost which is derived from HwndHost. All is working well except for one thing: messages for the reparented window are not delivered to FormHost. MSDN documentation clearly states that the HwndHost window procedure WndProc() cannot be used with out-of-process windows. The alternative, MessageHook doesn't work either. I also tried calling AttachThreadInput() to combine the input processing of the two windows. No luck. Any suggestions?

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