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  • Converting serial port data to TCP/IP in a linux environment

    - by Doug
    Thank you in advance. I need to get data from the serial port of a linux system and convert it to TCP/IP to send to a server. Is this difficult to do? I have some basic programming experience but not much experience with Linux. Are there any open source applications that do this? Again thank you for any help.

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  • Efficient mapping of game entity positions in Java

    - by byte
    In Java (Swing), say I've got a 2D game where I have various types of entities on the screen, such as a player, bad guys, powerups, etc. When the player moves across the screen, in order to do efficient checking of what is in the immediate vicinity of the player, I would think I'd want indexed access to the things that are near the character based on their position. For example, if player 'P' steps onto element 'E' in the following example... | | | | | | | | | |P| | | | |E| | | | | | | | | ... would be to do something like: if(player.getPosition().x == entity.getPosition().x && entity.getPosition.y == thing.getPosition().y) { //do something } And thats fine, but that implies that the entities hold their positions, and therefor if I had MANY entities on the screen I would have to loop through all possible entities available and check each ones position against the player position. This seems really inefficient especially if you start getting tons of entities. So, I would suspect I'd want some sort of map like Map<Point, Entity> map = new HashMap<Point, Entity>(); And store my point information there, so that I could access these entities in constant time. The only problem with that approach is that, if I want to move an entity to a different point on the screen, I'd have to search through the values of the HashMap for the entity I want to move (inefficient since I dont know its Point position ahead of time), and then once I've found it remove it from the HashMap, and re-insert it with the new position information. Any suggestions or advice on what sort of data structure / storage format I ought to be using here in order to have efficient access to Entities based on their position, as well as Position's based on the Entity?

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  • NHibernate Mapping in Asp.Net

    - by Siva
    Hi guys, I'm new to NHibernate. I'm trying to save the information in MySql Database. Here I got the error in class file. That is "Missing partial modifier on declaration of type 'WebApplication1.Personal.Personal_info'; another partial declaration of this type exists". Help me to fix it

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  • Fluent mapping help

    - by Matt Thrower
    Hi, This is probably a very simple question but I'm new to nHibernate and I'm having trouble working this out. I have a Page object, which can have many Region objects. I also have a Workflow object. Page and Region objects both have a relationship to Workflow and it's this double association that I'm having trouble with. The PageMap has HasMany(Function(x) x.Regions).Cascade.All() And the RegionMap has: References(Function(x) x.Page) And this all seems to work. But how do I define the relationship between Workflow and these two objects?

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  • numpy array mapping and take average

    - by user566653
    Dear all, I have three array value = np.array ([1, 3, 3, 5, 5, 7, 3]) index = np.array ([1, 1, 3, 3, 6, 6, 6]) data = np.array ([1, 2, 3, 4, 5, 6]) and want to take average for item of "value" by array "index", and assign a new array with value of "data", such as [2, nan, 4, nan, nan, 5] first value is the average of 1st and 2nd of "value" second value is nan because there is not any key in "index" third value is the average of 3rd and 4th of "value" ... Thanks for your help!!! Regards, Roy

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  • Perl and hosts file mapping question?

    - by user275633
    All, I have a hosts file that looks like this: 10.10.10.1 myserver1 myserver1alias 10.10.10.2 myserver2 myserver2alias I'm looking for a way using perl to pass in an argument of myserver1 and have it return myserver1alias, likewise if I pass in myserver2 it should return myserver2alias. Any suggestions?

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  • Hibernate List<Enum> mapping

    - by Ranna
    I have a bean property Map<Long,List<TransactionFlowEnum>> accessRights. Please help me out to map it in hbm file. I have tried by following but it is not working out. <map name="accessRights" cascade="refresh" table="privilege_access_right_map"> <key column="privilege_id"/> <map-key column="document_type_id" type ="long"/> <many-to-many class="com.v4common.shared.beans.usermanagement.TransactionFlowEnum" column="access_right_id" /> </map> Thanks In Advance.

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  • Database/Object Mapping

    - by Eric
    Hello everyone, This is a beginner question, but it's been frustrating me... I am using C#, by the way. I'd like to make a few classes, each with their own properties and methods. I would also like to have a database to store certain instances of these classes in case I would ever need to look at them again. So, for example... class Polygon { String name; Double perimiter; int numSides; public Double GetArea() { // ... } } class Circle { String name; Double radius; public void PrintName() { // ... } } Say I've got these classes. I also want a database that has the TABLES "Polygon" and "Circle" with the COLUMNS "name" "perimeter" "radius" etc. And I want an easy way to save a class instance into the database, or pull a class instance out of the database. I have previously been using MS Access for my database stuff, which I don't mind using, but I would prefer if nothing other than .NET need to be installed. I've been researching online a bit, but I wanted to get some opinions on here. I have looked at Linq-to-Sql, but it seems you need Sql-Server. Is this true? If so, I'd really rather not use it because I don't want to have to have it installed everywhere. Anway, I'm just fishing for some ideas/insights/suggestions/etc. so please help me out if you can. Thanks.

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  • Store SMS received/sent on/from a port(other than 0)

    - by sourabh0612
    I have configured my J2ME application to send/receive SMS on a specific port.Is there any special way to store such SMS, sent/received by the application, on a RecordStore created by the application? PS-Special way is in the context that the entire SMS with all its attributes are stored in 1 entry and any the attributes can be retrieved back easily.

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  • Multi valued profile property mapping to AD in Sharepoint

    - by keeno
    I'm trying to map my skills and responsibilities profile sections to one of the custom properties in Active Directory (extensionattribute1 , 2, etc). I'm entering comma seperated values in AD and it's importing the values fine but sees the comma seperated values as one value on import. i.e. 'C#,asp.net,javascript' rather than 'C#', 'asp.net', 'Javascript'. Any ideas. I'm almost there it's just not spliting the values correctly on import. thanks in Advance

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  • Reading data from a COM port

    - by Demonick
    I want to get input from a barcode-scanner, which is connected to a CHD cash register, which is connected to a Windows XP PC trough a COM port. I want to read the data from the scanner and the cash register, and send the data to a program, which has a table with items in a shop. And provide a function which removes items, too. Where should I start? Is there a code in Delphi or Java, that can get that data into a program?

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  • OpenGL Mapping Textures to a Grid Stored Inside Vertex Array

    - by Matthew Hoggan
    I am writing a test to verify something. This is not production code, just verification code. So I would appreciate it if the specific question was answered. I have code that uses indices and vertices to draw a set of triangles in the shape of a grid. All the vertices are drawn using glDrawElements(). Now for each vertex I will set its corresponding Texture Coordinates to 0 or 1 for each set of triangles that form a square in the grid. Basically I want to draw a collage of random textures in each one of the "squares" (consisting of two triangles). I can do this using the glBegin() and glEnd() method calls inside a for loop using the fixed functional pipeline, but I would like to know how to do this using Vertex Arrays.

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  • Best Design Pattern to Implement while Mapping Actions in MVC

    - by FidEliO
    What could be the best practices of writing the following case: We have a controller which based on what paths users take, take different actions. For example: if user chooses the path /path1/hello it will say hello. If a user chooses /path1/bye?name="Philipp" it will invoke sayGoodBye() and etc. I have written a switch statement inside the controller which is simple, however IMO not efficient. What are the best way to implement this, considering that paths are generally String. private void takeAction() { switch (path[1]) { case "hello": //sayHello(); break; case "bye": //sayBye(); break; case "case3": //Blah(); break; ... } }

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  • Tool to maintain a Data Mapping between two systems

    - by ktaylorjohn
    We have XML interfaces between multiple systems. An Enterprise Domain Model is missing in the overall architecture, hence the terms Product/Customer/User means different things to different systems. We currently use excel sheets to map the elements in incoming XML to what the actual Field means within our system. Additionally, it contains the values of Mandatory/Optional and length of each field. We call this the Data Dictionary. Any changes to the XML go through rounds of deliberation and updates to Word and Excel documents. Is there a better way to do this? Any tool/GUI based approach which all systems and owners can view?

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  • Mapping restful ajax requests to spring

    - by Diones
    I have this piece of code: @RequestMapping(value = "/test.json", method = RequestMethod.GET) @ResponseStatus(HttpStatus.OK) public @ResponseBody Object[] generateFile(@RequestParam String tipo) { Object[] variaveis = Variavel.getListVariavelByTipo(tipo); return variaveis; } As far as I know it should take a request to test.json?tipo=H and return the JSON representation of Variavel[], however when I make such request I get: HTTP Status 406 - type Status report message descriptionThe resource identified by this request is only capable of generating responses with characteristics not acceptable according to the request "accept" headers () By using the following function I can get the expected json: @RequestMapping(value = "/teste.json") public void testeJson(Model model, @RequestParam String tipo) { model.addAttribute("data", Variavel.getListVariavelByTipo("H")); } What I'm doing wrong?

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  • Mapping a URL to a service inside a class library

    - by johnk82swe
    I'm developing a small content management solution than can be used in any ASP.NET 3.5 website. The website references some dll's and then lets the aspx's inherit my page baseclass. Some configuration in web.config is also needed, but thats it. Now I'm building a standalone Silverlight editor for the CMS. My idea is that it should communicate with the server using web services. But the question is how to make this service available to the editor? I don't want the website developers having to bother with it. If I used a REST API rather than SOAP I could just create an HttpHandler in my class library and let the website developers add a handler to it in web.config with the path "editor" and then the editor could communicate with that handler on mywebsite.com/editor. Is there any way to achieve the same with a asmx or wcf service? The important thing is that the website developers never have to set up any asmx files or anything. They should only have to specify a url and map that url to a service inside my class library. Thanks in advance!

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  • Struts2 form to action fields mapping automatically

    - by hkansal
    Hello, I would like to know if it is possible, in Struts2, to map an HTML form's fields to those of an action, automatically, without getters and setters. It is clear that by getters and setters or the ParameterAware interface and the Map, fields can be set in the action, but I just wanted to know if otherwise there was a way.

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  • Hibernate Relationship Mapping/Speed up batch inserts

    - by manyxcxi
    I have 5 MySQL InnoDB tables: Test,InputInvoice,InputLine,OutputInvoice,OutputLine and each is mapped and functioning in Hibernate. I have played with using StatelessSession/Session, and JDBC batch size. I have removed any generator classes to let MySQL handle the id generation- but it is still performing quite slow. Each of those tables is represented in a java class, and mapped in hibernate accordingly. Currently when it comes time to write the data out, I loop through the objects and do a session.save(Object) or session.insert(Object) if I'm using StatelessSession. I also do a flush and clear (when using Session) when my line count reaches the max jdbc batch size (50). Would it be faster if I had these in a 'parent' class that held the objects and did a session.save(master) instead of each one? If I had them in a master/container class, how would I map that in hibernate to reflect the relationship? The container class wouldn't actually be a table of it's own, but a relationship all based on two indexes run_id (int) and line (int). Another direction would be: How do I get Hibernate to do a multi-row insert?

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  • Port Android App to Desktop?

    - by CodeJustin.com
    I'm just wondering if it would be possible (and legal) to port an Android app to desktop? I'm creating an android game that would work well on PC too (even with the cellphone like layout) and was thinking that maybe I could 'embed' an android emulator with an installer or would that process be a bit hard for a novice Java coder?

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