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  • Efficient persistent storage for simple id to table of values map for java

    - by wds
    I need to store some data that follows the simple pattern of mapping an "id" to a full table (with multiple rows) of several columns (i.e. some integer values [u, v, w]). The size of one of these tables would be a couple of KB. Basically what I need is to store a persistent cache of some intermediary results. This could quite easily be implemented as simple sql, but there's a couple of problems, namely I need to compress the size of this structure on disk as much as possible. (because of amount of values I'm storing) Also, it's not transactional, I just need to write once and simply read the contents of the entire table, so a relational DB isn't actually a very good fit. I was wondering if anyone had any good suggestions? For some reason I can't seem to come up with something decent atm. Especially something with an API in java would be nice.

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  • How to configure Hibernate database reverse engineering tool to map database table relation as a ent

    - by Piotr Kochanski
    Is it possible to configure Hibernate reverse engineering and code generation tool in such a way that one-to-many relation between tables is mapped to entities inheritance instead of enrites relation? I have Person table and Employee table, which are related with the foreign key (Person contains basic information, Employee the rest). In my Java code I would like this relation mapped to inheritance Employee extends Person. This can be done by hand, but maybe I missed some custom configuration parameter that I can use. I couldn't find any official documentation - docs link on RedHat Hibernate page (http://www.hibernate.org/5.html#A10) is broken...

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  • iPhone dev - showing two locations on the map

    - by Brian
    Now I have the coordinate of two locations, let say locationA with latitude 40 and longitude -80, locationB with latitude 30 and longitude -70, I want to create a mapView that I can see both locations with appropriate viewing distance. I got the new coordinate by finding the midpoint (in this example, {35, -75}), but the question is, How can I get an appropriate viewing distance? In particular, how can I calculate CLLocationDistance (if I'm using MKCoordinateRegionMakeWithDistance) or MKCoordinateSpan (if I'm using MKCoordinateSpanMake). Thanks in advance.

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  • Cocos2d - smooth sprite movement in tile map RPG

    - by Lendo92
    I've been working on a 2-D Gameboy style RPG for a while now, and the game logic is mostly all done so I'm starting to try to make things look good. One thing I've noticed is that the walking movement / screen movement is a little bit choppy. Technically, it should work fine, but either it seems to be having some quirks, either due to taking up a lot of processing power or just timing inconsistencies between moving the screen and moving the sprite. To move the sprite, once I know where I want to move it, I call: tempPos.y += 3*theHKMap.tileSize.width/5; id actionMove = [CCMoveTo actionWithDuration:0.1 position:tempPos]; id actionMoveDone = [CCCallFuncN actionWithTarget:self selector:@selector(orientOneMove)]; [guy runAction:[CCSequence actions:actionMove, actionMoveDone, nil]]; [self setCenterOfScreen:position]; Then, in orientOneMove, I call: [self.guy setTexture:[[CCTextureCache sharedTextureCache] addImage:@"guysprite07.png"]]; //the walking picture-I change texture back at the end of the movement id actionMove = [CCMoveTo actionWithDuration:0.15 position:self.tempLocation2]; id actionMoveDone = [CCCallFuncN actionWithTarget:self selector:@selector(toggleTouchEnabled)]; [guy runAction:[CCSequence actions:actionMove, actionMoveDone, nil]]; The code for the concurrently running setCenterOfScreen:position method is: id actionMove = [CCMoveTo actionWithDuration:0.25 position:difference]; [self runAction: [CCSequence actions:actionMove, nil, nil]]; So the setCenterOfScreen moves the camera in one clean move while the guy moving is chopped into two actions to animate it (which I believe might be inefficient.) It's hard to tell what is making the movement not perfectly clean from looking at it, but essentially the guy isn't always perfectly in the center of the screen -- during movement, he's often times a pixel or two off for an instant. Any ideas/ solutions?

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  • how to send some data to the Thread module on python and google-map-engine

    - by zjm1126
    from google.appengine.ext import db class Log(db.Model): content = db.StringProperty(multiline=True) class MyThread(threading.Thread): def run(self,request): #logs_query = Log.all().order('-date') #logs = logs_query.fetch(3) log=Log() log.content=request.POST.get('content',None) log.put() def Log(request): thr = MyThread() thr.start(request) return HttpResponse('') error is : Exception in thread Thread-1: Traceback (most recent call last): File "D:\Python25\lib\threading.py", line 486, in __bootstrap_inner self.run() File "D:\zjm_code\helloworld\views.py", line 33, in run log.content=request.POST.get('content',None) NameError: global name 'request' is not defined

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  • Fluent NHibernate - How to map the foreign key column as a property

    - by Steve
    I am sure this is a straightforward question but consider the following: I have a reference between company and sector as follows: public class Company { public Guid ID { get; set; } public Sector Sector { get; set; } public Guid SectorID { get; set; } } public class Sector { public Guid ID { get; set; } public string Name { get; set; } } Ok. What I want is the SectorID of the Company object to be populated after I go: (new Company()).Sector = new Sector() { Name="asdf" } and do a flush. The mapping I am using kindly creates an additional column in the database called Sector_Id in the Company table, but this is not available as a property on Company. I want the SectorID property to be filled. The mapping i am currently using in the CompanyMap is References(c = c.Sector).Cascade.All(); Does anyone have any ideas?

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  • Where clause in nhibernate map

    - by Phil Whittaker
    I have an Nhibernate hbm that maps a many to many relationship. For database simplicity it uses a where clause on the bag to filter the joining table. this works well until I start to test and I use the hbm file to create a database from the generated schema. The root and user tags columns aren't created. In the hbm file how do I define these two columns so they are generated in the schema?

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  • Beginning android: how to map a string to a list

    - by user569421
    I just finished the NotepadV1-3 tutorial for Android apps, and I was thinking of creating my own inventory app for fun, which for now basically consists of a list of names (such as "DVD" or "Grocery"), each of which can be clicked, which will bring up another specific list associated with that name. However, with the SQLiteDatabase.insert(..) method, the ContentValue can only take (among many others) "String, String" as argument, and I can't figure out how to input into the database a list of Strings associated with a particular key. I'm having trouble researching on how to resolve this as I am not that familiar with SQL. What would be the best way to store a key with its associated list of Strings? Any pointers and suggestions are appreciated! Android newb :[

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  • JSP Iterating over a map of a list when the value might be null

    - by Brian Hoover
    How do I clear the value from the stack of a s:iterator? I'm trying to iterator over a TreeMultimap with a structure like: TreeMultimap<person, lineItems> persons; Using something like: <s:iterator value="attendeesForParticipantTypeEvents.asMap()"> <div> <s:property value="key.name" /><br /> <s:iterator id="currentSku" value="value"> <s:property value="currentSku.name" /><br /> </s:iterator> </div> </s:iterator> This works fine, except when the treeMultimap has null for lineItems, then it's taking the value from the previous iteration. So, a structure like: persons = {{"Person1",["Line1","line2"]}, {"Person2",["Line3","line4"]}, {"Person2",null}} Renders as: <div> Person1<br /> Line1<br /> Line2<br /> </div> <div> Person2<br /> Line3<br /> Line4<br /> </div> <div> Person3<br /> Line3<br /> Line4<br /> </div> Which seems to indicate that the value isn't being cleared on each iterator. What do I need to do to handle the case where value might be null? Thanks for your help

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  • asp.net custom control with form field validation issue

    - by Ibrar Afzal
    Hi, I have created a custom asp .net control some fields have validation controal associated with them. The problem arised when I declare more than one initializtion on a page. When I hit submit on one of the intialized control. Form validation occur on all other control that were declared. Due to this issue I can submit a for. Here is the code `<%@ Control Language="C#" AutoEventWireup="true" CodeFile="FinancialAdvisorHelp.ascx.cs" Inherits="FinancialAdvisorHelp" %                                           Invalid Email." Member Name* E-Mail Address* Telephone Number Ask Darryl your question Note: you should receive a response within two (2) business days. *Required information.   `

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  • Best way to map/join two autogenerated enums

    - by tomlip
    What is the best C++ (not C++11) way of joining two enums from autogenerated class similar to one presented below: namespace A { namespace B { ... class CarInfo { enum State { // basically same enums defined in different classes Running, Stopped, Broken } } class BikeInfo { enum State { // basically same enums defined in different classes Running, Stopped, Broken } } } } What is needed is unified enum State for both classes that is seen to outside world alongside with safe type conversion. The best and probably most straightforward way I came up with is to create external enum: enum State { Running, Stopped, Broken } together with conversion functions State stateEnumConv(A::B::CarInfo::State aState); State stateEnumConv(A::B::BikeInfo::State aState); A::B::CarInfo::State stateEnumConv(State aState); A::B::BikeInfo::State stateEnumConv(State aState); Direction into right approach is needed. Gosh coming from C I hate those long namespaces everywhere an I wish it could be only A::B level like in presented example. Four conversion functions seem redundant note that CarInfo::State and BikeInfo::State has same enum "members".

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  • Handling Apache Thrift list/map Return Types in C++

    - by initzero
    First off, I'll say I'm not the most competent C++ programmer, but I'm learning, and enjoying the power of Thrift. I've implemented a Thrift Service with some basic functions that return void, i32, and list. I'm using a Python client controlled by a Django web app to make RPC calls and it works pretty well. The generated code is pretty straight forward, except for list returns: namespace cpp Remote enum N_PROTO { N_TCP, N_UDP, N_ANY } service Rcon { i32 ping() i32 KillFlows() i32 RestartDispatch() i32 PrintActiveFlows() i32 PrintActiveListeners(1:i32 proto) list<string> ListAllFlows() } The generated signatures from Rcon.h: int32_t ping(); int32_t KillFlows(); int32_t RestartDispatch(); int32_t PrintActiveFlows(); int32_t PrintActiveListeners(const int32_t proto); int64_t ListenerBytesReceived(const int32_t id); void ListAllFlows(std::vector<std::string> & _return); As you see, the ListAllFlows() function generated takes a reference to a vector of strings. I guess I expect it to return a vector of strings as laid out in the .thrift description. I'm wondering if I am meant to provide the function a vector of strings to modify and then Thrift will handle returning it to my client despite the function returning void. I can find absolutely no resources or example usages of Thrift list< types in C++. Any guidance would be appreciated.

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  • Google maps event problem with flex actionscript

    - by DEH
    I am able to render a google map on a flex canvas. I create the map using the code below and then place markers on it in the onMapReady method (not shown) var map:com.google.maps.Map=new com.google.maps.Map(); map.id="map"; map.key="bla bla"; _mapCanvas.addChild(map); map.addEventListener(MapEvent.MAP_READY,onMapReady); It all works fine. However, if I remove the map and then set _mapCanvas to null, then run exactly the same code again, the onMapReady event does not fire. It is weird, but once a map has been created and deleted, the onMapReady event never seems to fire again. Anyone got any ideas? Thanks.

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  • How can i pass a single additional argument to array_map callback in PHP?

    - by Gremo
    How can i pass a single additional argument to array_map callback? In my example i'd like to pass $smsPattern (as a second argument, after current element in $featureNames) to the function array_map with $getLimit closure: $features = $usage->getSubscription()->getUser()->getRoles(); // SMS regular expression in the form of ROLE_SEND_SMS_X $smsPattern = '/^ROLE_SEND_SMS_(?P<l>\d+)$/i'; // Function to get roles names and X from a role name $getNames = function($r) { return trim($r->getRole()); }; $getLimit = function($name, $pattern) { if(preg_match($pattern, $name, $m)) return $m['l']; }; // Get roles names and their limits ignoring null values with array_filter $featuresNames = array_map($getNames, $features); $smsLimits = array_filter(array_map($getLimit, $featureNames, $smsPattern)); With this code i'm getting a weird warning: Warning: array_map() [function.array-map]: Argument #3 should be an array. Of course di reason is for reusing $getLimit closure with another regular expression like $smsPattern. Thanks.

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  • Map null column as 0 in a legacy database (JPA)

    - by Indrek
    Using Play! framework and it's JPASupport class I have run into a problem with a legacy database. I have the following class: @Entity @Table(name="product_catalog") public class ProductCatalog extends JPASupport { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) public Integer product_catalog; @OneToOne @JoinColumn(name="upper_catalog") public ProductCatalog upper_catalog; public String name; } Some product catalogs don't have an upper catalog, and this is referenced as 0 in a legacy database. If I supply the upper_catalog as NULL, then expectedly JPA inserts a NULL value to that database column. How could I force the null values to be 0 when writing to the database and the other way around when reading from the database?

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  • Structure map and generics (in XML config)

    - by James D
    Hi I'm using the latest StructureMap (2.5.4.264), and I need to define some instances in the xml configuration for StructureMap using generics. However I get the following 103 error: Unhandled Exception: StructureMap.Exceptions.StructureMapConfigurationException: StructureMap configuration failures: Error: 103 Source: Requested PluginType MyTest.ITest`1[[MyTest.Test,MyTest]] configured in Xml cannot be found Could not create a Type for 'MyTest.ITest`1[[MyTest.Test,MyTest]]' System.ApplicationException: Could not create a Type for 'MyTest.ITest`1[[MyTest.Test,MyTest]]' ---> System.TypeLoadException: Could not loa d type 'MyTest.ITest`1' from assembly 'StructureMap, Version=2.5.4.264, Culture=neutral, PublicKeyToken=e60ad81abae3c223'. at System.RuntimeTypeHandle._GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark, Boolean loadTypeFromPartialName) at System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark) at System.RuntimeType.PrivateGetType(String typeName, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& s tackMark) at System.Type.GetType(String typeName, Boolean throwOnError) at StructureMap.Graph.TypePath.FindType() --- End of inner exception stack trace --- at StructureMap.Graph.TypePath.FindType() at StructureMap.Configuration.GraphBuilder.ConfigureFamily(TypePath pluginTypePath, Action`1 action) A simply replication of the code is as follows: public interface ITest<T> { } public class Test { } public class Concrete : ITest<Test> { } Which I then wish to define in the XML configuration something as follows: <DefaultInstance PluginType="MyTest.ITest`1[[MyTest.Test,MyTest]],MyTest" PluggedType="MyTest.Concrete,MyTest" Scope="Singleton" /> I've been racking my brain, however I can't see what I'm doing wrong - I've used Type.GetType to verify the type actually is valid which it is. Anyone have any ideas? Thanks !

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  • Request header field x-user-session is not allowed by Access-Control-Allow-Headers

    - by Saurabh Bhandari
    I am trying to do a CORS call to a WCF service endpoint hosted on IIS7.5. I have configured custom headers in IIS. My configuration looks like below <customHeaders> <add name="Access-Control-Allow-Methods" value="GET,PUT,POST,DELETE,OPTIONS" /> <add name="Access-Control-Allow-Headers" value="x-user-session,origin, content-type, accept" /> <add name="Access-Control-Allow-Credentials" value="true" /> </customHeaders> When I do a POST request I get following error message "Request header field x-user-session is not allowed by Access-Control-Allow-Headers" If I remove my custom header from the call and run it, everything works fine. Also if I do a GET call with custom header then also API works correctly. $.ajax({ type:"POST", success: function(d) { console.log(d) }, timeout: 9000, url: "http://api.myserver.com/Services/v2/CreditCard.svc/update_cc_detail", data: JSON.stringify({"card_id": 1234,"expire_month":"11","expire_year":"2020","full_name":"Demo Account", "number":"4111111111111111","is_primary":true}), xhrFields: { withCredentials: true}, headers: { x-user-session': "B23680D0B8CB5AFED9F624271F1DFAE5052085755AEDDEFDA3834EF16115BCDDC6319BD79FDCCB1E199BB6CC4D0C6FBC9F30242A723BA9C0DFB8BCA3F31F4C7302B1A37EE0A20C42E8AFD45FAB85282FCB62C0B4EC62329BD8573FEBAEBC6E8269FFBF57C7D57E6EF880E396F266E7AD841797792619AD3F1C27A5AE" }, crossDomain: true, contentType: 'application/json' });

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  • How do I generate site map from MySQL database

    - by mathew
    Hi all I am new to Php and working on a project which needs to generate sitemaps from URLS which stored in MySQL database. how can I do this?? Is there any one have any idea?? site maps can be in php extension too and only requirement is list of sites display in each page

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  • How do I map repeating columns in NHibernate without creating duplicate properties

    - by Ian Oakes
    Given a database that has numerous repeating columns used for auditing and versioning, what is the best way to model it using NHibernate, without having to repeat each of the columns in each of the classes in the domain model? Every table in the database repeats these same nine columns, the names and types are identical and I don't want to replicate it in the domain model. I have read the docs and I saw the section on inheritance mapping but I couldn't see how to make it work in this scenario. This seems like a common scenario because nearly every database I've work on has had the four common audit columns (CreatedBy, CreateDate, UpdatedBy, UpdateDate) in nearly every table. This database is no different except that it introduces another five columns which are common to every table.

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  • SpringFramework3.0: How to create interceptors that only apply to requests that map to certain contr

    - by Fusion2004
    In it's simplest form, I want an interceptor that checks session data to see if a user is logged in, and if not redirects them to the login page. Obviously, I wouldn't want this interceptor to be used on say the welcome page or the login page itself. I've seen a design that uses a listing of every url to one of two interceptors, one doing nothing and the other being the actual interceptor you want implemented, but this design seems very clunky and limits the ease of extensibility of the application. It makes sense to me that there should be an annotation-based way of using interceptors, but this doesn't seem to exist. My friend has the idea of actually modifying the handler class so that during each request it checks the Controller it is mapping the request to for a new annotation we would create (ex @Interceptor("loginInterceptor") ). A major point of my thinking is the extensibility, because I'd like to later implement similar interceptors for role-based authentication and/or administration authentication. Does it sound like my friend's approach would work for this? Or what is a proper way of going about doing this?

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