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  • Data retrieval and Join operations with cluster db server

    - by Goerge
    If any database spreads across multiple servers (ex. Microsoft Sql Server), how can we do join or filter operations. In my scenario, if suppose: A single table spreads across multiple servers how can we filter rows based on user input? If master table is there on one db server and transaction table is at another db server, how can we do join operations? Please let me know how can we achieve this and where can I get more details about this?

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  • TextField Listener

    - by coubeatczech
    Hi, there's a swing JTextField, and I want to add a listener, so whenever the users types a single letter, there's an event. There's a ValueChanged event in scala api, but I don't get it what's it's peer. So which one Listener should I use? KeyListener and implement reasonably just one method?

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  • Any special assertion to test if the resulting integer lies within a range

    - by barerd
    I would like to test if an instance variable lies in a range of numbers. I solved the problem by using assert_in_delta but would like to know if there is a formal assertion for this. #part of the tested class def initialize(value = 70 + rand(30)) @value = value end #test_value.rb class ValueTestCase < Test::Unit::TestCase def test_if_value_in_range assert_in_delta(85, p.value, 15) end end

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  • How do I see if something is getting touched?

    - by Nathan
    Is there some way in objective C to see if an instance is being touched such as: - (void)viewDidLoad { [super viewDidLoad]; if (recordButton.touched = YES) { NSLog (@"record button got touched"); } } Can't they just make these things easy? Could someone help?

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  • Python: How do sets work

    - by Guy
    I have a list of objects which I want to turn into a set. My objects contain a few fields that some of which are o.id and o.area. I want two objects to be equal if these two fields are the same. ie: o1==o2 if and only if o1.area==o2.area and o1.id==o2.id. I tried over-writing __eq__ and __cmp__ but I get the error: TypeError: unhashable instance. What should I over-write?

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  • Learning to read GCC assembler output

    - by porgarmingduod
    I'm considering picking up some very rudimentary understanding of assembly. My current goal is simple: VERY BASIC understanding of GCC assembler output when compiling C/C++ with the -S switch. Just enough to do simple things such as looking at a single function and verifying whether GCC optimizes away things I expect to disappear. Does anyone have/know of a truly concise introduction to assembly, relevant to GCC and specifically for the purpose of reading, and a list of the most important instructions anyone casually reading assembly should know?

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  • Separate clauses of an if statement?

    - by tarnfeld
    Is there any way to have multiple clauses in an if() statement? For instance: if( ($username=='textUser' && $role=='admin') || ($admin=='yes')) { // If the username AND role are set to admin OR if the admin is set to 'yes' } else { // Neither clauses of the if statement are true } Perhaps this is actually the correct code, i have no tried it - but if not, could anyone tell me how? :)

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  • django deployment apache

    - by Uszy Wieloryba
    I would like to create a python script, which will: Create a django project in the current directory. Fix settings.py, urls.py. Do syncdb Install new apache instance listening on specific port (command line argument), with WSGI configured to serve my project. I can't figure out how to do point 3. EDIT: Peter Rowell: I need the solution for both Linux and Windows I have root access This is a dedicated host Apache only

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  • With MVVM, does each UI window have its own ViewModel?

    - by j0rd4n
    When I'm designing multiple views under the MVVM pattern, does each view get its own ViewModel or do they all share the same one? I understand that this is ultimately a flexible decision, but what is the best practice? My gut tells me to have a ViewModel for each view (i.e. each separate UI window). All of the blog examples of MVVM show a single view but not much beyond that.

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  • C# multiple asynchronous HttpRequest with one callback

    - by aepheus
    I want to make 10 asynchronous http requests at once and only process the results when all have completed and in a single callback function. I also do not want to block any threads using WaitAll (it is my understanding that WaitAll blocks until all are complete). I think I want to make a custom IAsyncResult which will handle multiple calls. Am I on the right track? Are there any good resources or examples out there that describe handling this?

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  • Why is hibernate open session in view considered a bad practice?

    - by HeDinges
    And what kind of alternative strategies do you use for avoiding LazyLoadExceptions? I do understand that open session in view has issues with: Layered applications running in different jvm's Transactions are committed only at the end, and most probably you would like the results before. But, if you know that your application is running on a single vm, why not ease your pain by using an open session in view strategy?

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  • threading.local equivalent for twisted.web?

    - by defnull
    In asynchronous environments, threading.local is not guaranteed to be context-local anymore, because several contexts may coexist within a single thread. Most asynchronous frameworks (gevent, eventlet) provide a get_current_context() functionality to identify the current context. Some offer a way to monkey-patch threading.local so it is local to 'greenthreads' or other framework-specific contexts. I cannot find such a functionality in the twisted documentation. How do I do this?

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  • Symfony 1.4: Storing an array in session with SetAttribute

    - by Tom
    Hi, I'm wondering if someone knows how to store an array into a user session? This is the method to store a single attribute: $this->getUser()->setAttribute('something', $something); And the documentation says: "User attributes can store any type of data (strings, arrays, and associative arrays)" ... but doesn't say anything more. The API documentation doesn't have a "SetAttributes" or something similarly obvious. Thank you.

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  • How can I write an installer for 32 and 64 bit

    - by tom greene
    I have a .NET app which works in 32 and 64 bit. I would like to write one single installer that installs to c:\program files, not c:\program files(x86) regardless of the platform. From this link: http://msdn.microsoft.com/en-us/library/w1behyzx(v=VS.90).aspx it doesn't look possible. Is it the case?

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  • Development Environment for Testing MySQL Replication

    - by Dave Morris
    Is there an easy way to setup an environment on one machine (or a VM) with MySQL replication? I would like to put together a proof of concept of MySQL replication with one Master write instance and two slave instances for reads. I can see doing it across 2 or 3 VMs running on my computer, but that would really bog down my system. I'd rather have everything running on the same VM. What's the best way to proof out scalability solutions like this in a local dev environment? Thanks for your help, Dave

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  • Serialize in a human readable text format

    - by Martin Kirsche
    Is there a way in .NET 2.0 (C#) to serialize object like you do using XmlSerializer in a simple / customizable human readable format thats for instance looks like PXLS or JSON? Also I know that XML is human readable, I'm looking for something with less annoying redundancy, something that you can output to the console as a result for the user.

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  • DUMP in unhandled C++ exception

    - by Jorge Vasquez
    In MSVC, how can I make any unhandled C++ exception (std::runtime_error, for instance) crash my release-compiled program so that it generates a dump with the full stack from the exception throw location? I have installed NTSD in the AeDebug registry an can generate good dumps for things like memory access violation, so the matter here comes down to crashing the program correctly, I suppose. Thanks in advance.

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  • What does /*!*/ mean in C#?

    - by Tristan
    I'm new to C# and am reading code with /*!*/ in what seem like strange places. For instance class methods defined as: protected override OptionsParser/*!*/ CreateOptionsParser() protected override void ParseHostOptions(string/*!*/[]/*!*/ args) Unfortunately /*!*/ is not googleable. What does it mean?

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  • JSON parsing using JSON.net

    - by vbNewbie
    I am accessing the facebook api and using the json.net library (newtonsoft.json.net) I declare a Jobject to parse the content and look for the specific elements and get their values. Everything works fine for the first few but then I get this unexplained nullexception error " (Object reference not set to an instance of an object) Now I took a look at the declaration but cannot see how to change it. Any help appreciated: Dim jobj as JObject = JObject.Parse(responseData) Dim message as string = string.empty message = jobj("message").tostring The error occurs at the last line above.

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  • Suds array of arrays not nesting

    - by joshcartme
    Let me preface this by saying that I am still pretty new to SOAP and how things should work. I'm working with the Vertical Response API. I'm having trouble getting suds to construct the xml correctly for a request. Here is some code: from suds.client import Client url = 'https://api.verticalresponse.com/wsdl/1.0/VRAPI.wsdl' client = Client(url) vr = client.service ... test_list = ( ( { 'name' : 'email_address', 'value' : login['username'], }, { 'name' : 'First_Name', 'value' : 'VR_User', } ), ( { 'name' : 'email_address', 'value' : '[email protected]', }, { 'name' : 'First_Name', 'value' : login['username'], }, ), ) # sid and cid are correctly retrieved prior to this point print "Sending test message..." vr.sendEmailCampaignTest({ 'session_id' : sid, 'campaign_id' : cid, 'recipients' : test_list, }) In this context login['username'] is just an email address. That code raises this error: suds.WebFault: Server raised fault: 'Application failed during request deserialization: Too many elements in array. 4 instead of claimed 2 (2) Here is the the definition of sendEmailCampaignTest: http://developers.verticalresponse.com/api/soap/methods/campaigns/sendemailcampaigntest/ Here is the xml that logging outputs (I removed the session_id and list_id for display here): DEBUG:suds.client:headers = {'SOAPAction': u'"VR/API/1_0#sendEmailCampaignTest"', 'Content-Type': 'text/xml; charset=utf-8'} ERROR:suds.client:<?xml version="1.0" encoding="UTF-8"?> <SOAP-ENV:Envelope xmlns:ns3="http://api.verticalresponse.com/1.0/VRAPI.xsd" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:ns0="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://www.w3.org/2001/XMLSchema" xmlns:ns2="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ns4="VR/API/1_0" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"> <SOAP-ENV:Header/> <ns0:Body> <ns4:sendEmailCampaignTest> <args xsi:type="ns3:sendEmailCampaignTestArgs"> <session_id xsi:type="ns1:string">redacted</session_id> <campaign_id xsi:type="ns1:int">redacted</campaign_id> <recipients xsi:type="ns3:ArrayOfNVDictionary" ns2:arrayType="ns3:NVDictionary[2]"> <item> <name xsi:type="ns1:string">email_address</name> <value xsi:type="ns1:string">[email protected]</value> </item> <item> <name xsi:type="ns1:string">First_Name</name> <value xsi:type="ns1:string">VR_User</value> </item> <item> <name xsi:type="ns1:string">email_address</name> <value xsi:type="ns1:string">[email protected]</value> </item> <item> <name xsi:type="ns1:string">First_Name</name> <value xsi:type="ns1:string">[email protected]</value> </item> </recipients> </args> </ns4:sendEmailCampaignTest> </ns0:Body> </SOAP-ENV:Envelope> DEBUG:suds.client:http failed: <?xml version="1.0" encoding="UTF-8"?><SOAP-ENV:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><SOAP-ENV:Body><SOAP-ENV:Fault><faultcode>SOAP-ENV:Client</faultcode><faultstring>Application failed during request deserialization: Too many elements in array. 4 instead of claimed 2 (2) </faultstring></SOAP-ENV:Fault></SOAP-ENV:Body></SOAP-ENV:Envelope> a ruby script (provided by Vertical Response) that does the same things as the script I am working on in python outputs the following xml (I removed the session_id and list_id): <?xml version="1.0" encoding="utf-8" ?> <env:Envelope xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:env="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <env:Body> <n1:sendEmailCampaignTest xmlns:n1="VR/API/1_0" env:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"> <args xmlns:n2="http://api.verticalresponse.com/1.0/VRAPI.xsd" xsi:type="n2:sendEmailCampaignTestArgs"> <session_id xsi:type="xsd:string">redacted</session_id> <campaign_id xsi:type="xsd:int">redacted</campaign_id> <recipients xmlns:n3="http://schemas.xmlsoap.org/soap/encoding/" xsi:type="n3:Array" n3:arrayType="n2:NVDictionary[2]"> <item xsi:type="n3:Array" n3:arrayType="n2:NVPair[2]"> <item> <name xsi:type="xsd:string">email_address</name> <value href="#id9496430"></value> </item> <item> <name xsi:type="xsd:string">First_Name</name> <value xsi:type="xsd:string">VR_User</value> </item> </item> <item xsi:type="n3:Array" n3:arrayType="n2:NVPair[2]"> <item> <name xsi:type="xsd:string">email_address</name> <value xsi:type="xsd:string">[email protected]</value> </item> <item> <name xsi:type="xsd:string">First_Name</name> <value href="#id9496430"></value> </item> </item> </recipients> </args> </n1:sendEmailCampaignTest> <value id="id9496430" xsi:type="xsd:string" env:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">[email protected]</value> </env:Body> </env:Envelope> I understand that the error is in the construction of recipients. It should contain two items, each that contain two items but my python script using suds is setting it up to contain four unnested items. So my question is how can I get suds to correctly construct the xml?

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