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  • Apache tomcat7 + couchdb in the same host

    - by demotics2002
    I couldn't find any guide on the internet about how to make them work together. I found some couchdb tutorials but they are mostly having the web pages hosted in couchdb's own webserver. My requirement: 1. Use tomcat 7 (or other versions) - i will be using jsp for the website. It has some features that require file upload and processing of files, file generation, and etc., that will require java. It also has admin console that will require the next item, 2. ExtJS (maybe V4) - I will be needing this in the admin console page for restful access to couchdb and other ui components (sorry but I am not considering jquery at the moment because I am already familiar with . 3. Couchdb - because the client needs a dynamic structure of data. Now my question is how to make tomcat and couchdb run on the same host (and port of course)? As much as possible I would like to avoid making my pages doing cross domain js calls. Worst case I may have to create a servlet that overrides put|get|post|delete that calls couchdb (either by using a driver or httpclient).

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  • SQL database problems with addressbook table design

    - by Sebastian Hoitz
    Hello! I am writing a addressbook module for my software right now. I have the database set up so far that it supports a very flexible address-book configuration. I can create n-entries for every type I want. Type means here data like 'email', 'address', 'telephone' etc. I have a table named 'contact_profiles'. This only has two columns: id Primary key date_created DATETIME And then there is a table called contact_attributes. This one is a little more complex: id PK #profile (Foreign key to contact_profiles.id) type VARCHAR describing the type of the entry (name, email, phone, fax, website, ...) I should probably change this to a SET later. value Text (containing the value for the attribute). I can now link to these profiles, for example from my user's table. But from here I run into problems. At the moment I would have to create a JOIN for each value that I want to retrieve. Is there a possibility to somehow create a View, that gives me a result with the type's as columns? So right now I would get something like #profile type value 1 email [email protected] 1 name Sebastian Hoitz 1 website domain.tld But it would be nice to get a result like this: #profile email name website 1 [email protected] Sebastian Hoitz domain.tld The reason I do not want to create the table layout like this initially is, that there might always be things to add and I want to be able to have multiple attributes of the same type. So do you know if there is any possibility to convert this dynamically? If you need a better description please let me know. Thank you!

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  • Looking for a .Net ORM

    - by SLaks
    I'm looking for a .Net 3.5 ORM framework with a rather unusual set of requirements: I need to create and alter tables at runtime with schemas defined by my end-users. (Obviously, that wouldn't be strongly-typed; I'm looking for something like a DataTable there) I also want regular strongly-typed partial classes for rows in non-dynamic tables, with custom validation and other logic. (Like normal ORMs) I want to load the entire database (or some entire tables) once, and keep it in memory throughout the life of the (WinForms) GUI. (I have a shared SQL Server with a relatively slow connection) I also want regular LINQ support (like LINQ-to-SQL) for ASP.Net on the shared server (which has a fast connection to SQL Server) In addition to SQL Server, I also want to be able to use a single-file database that would support XCopy deployment (without installing SQL CE on the end-user's machine). (Probably Access or SQLite) Finally, it has to be free (unless it's OpenAccess) I'll probably have to write it myself, as I don't think there is an existing ORM that meets these requirements. However, I don't want to re-invent the wheel if there is one, hence this question. I'm using VS2010, but I don't know when my webhost (LFC) will upgrade to .Net 4.0

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  • Manipulate score/rank on query results from NHibernate.Search

    - by Fernando Figueiredo
    I've been working with NHibernate, NHibernate.Search and Lucene.Net to improve the search engine used on the website I develop. Basically, I use it to search contents of corporations specification documents. This is not to be confused with Lucene's notion of documents: in my case, a specification document (which I'll hereafter call a "specdoc") can contain many pages, and the content of these pages are the ones that are actually indexed (thus, the pages themselves are the ones that fall into Lucene's concept of documents). So, the pages belong to a specdoc, that in turn belong to a corporation (so, a corporation can have many specdocs). I'm using NHibernate.Search "IndexEmbedded" and "ContainedIn" attributes to associate the pages with their specdoc and the specdocs to their corporations, so I can query for terms in specdoc pages and have Lucene/NH.Search return either the pages themselves, the specdocs, or the corporations that match the query on the pages. I can query this way and get ranked results, thus presenting results (that is, corporations, specdocs or pages) by relevance, which is great. But now I need something more. Specifically in the case where I query terms and have NH.Search return the corporations that match, I need to manually/artificially tune the score of some of the results, because there are corporations that I want to show up on the top of the result set - think of "sponsored results". I'm thinking of doing it on my application, maybe creating an entity/database table that contain an association to the corporation entity, and a score boost value. But I don't know how to feed this to Lucene and have it boost the results accordingly at search time. Initially I thought about deriving a Similarity class to do this, but it doesn't look like Similarity can be used to modify result sets at search time. As per this page, it looks like what I need is to mess around with weight or scoring. But the docs are a little superficial in that there are no examples on how to implement a custom scoring, let alone integrate it with NH.Search. So, does anyone know how to do this, or point me to some documentation or working example on how to do something similar? Thanks!

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  • Why is Swing Parser's handleText not handling nested tags?

    - by Jim P
    I need to transform some HTML text that has nested tags to decorate 'matches' with a css attribute to highlight it (like firefox search). I can't just do a simple replace (think if user searched for "img" for example), so I'm trying to just do the replace within the body text (not on tag attributes). I have a pretty straightforward HTML parser that I think should do this: final Pattern pat = Pattern.compile(srch, Pattern.CASE_INSENSITIVE); Matcher m = pat.matcher(output); if (m.find()) { final StringBuffer ret = new StringBuffer(output.length()+100); lastPos=0; try { new ParserDelegator().parse(new StringReader(output.toString()), new HTMLEditorKit.ParserCallback () { public void handleText(char[] data, int pos) { ret.append(output.subSequence(lastPos, pos)); Matcher m = pat.matcher(new String(data)); ret.append(m.replaceAll("<span class=\"search\">$0</span>")); lastPos=pos+data.length; } }, false); ret.append(output.subSequence(lastPos, output.length())); return ret; } catch (Exception e) { return output; } } return output; My problem is, when I debug this, the handleText is getting called with text that includes tags! It's like it's only going one level deep. Anyone know why? Is there some simple thing I need to do to HTMLParser (haven't used it much) to enable 'proper' behavior of nested tags? PS - I figured it out myself - see answer below. Short answer is, it works fine if you pass it HTML, not pre-escaped HTML. Doh! Hope this helps someone else. <span>example with <a href="#">nested</a> <p>more nesting</p> </span> <!-- all this gets thrown together -->

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  • RegularExpression Validator doesn't display error message.

    - by Rudi Ramey
    I have a regular expression validation control initialized to validate a textbox control. I want users to be able to enter U.S. Currency values ($12,115.85 or 1500.22 etc.). I found a regular expression off of regexlib website that does the trick. The validation control seems to be working except for one crucial thing. If invalid data is entered, the validation text dispalys (a red "*" next to the textbox), but the page will still submit and the error message won't pop up... I thought that the error message is supposed to display and the page won't submit if the validation control detects invalid data. Isn't this automatic with ASP .NET? I have searched extensively on how to create validation controls, but haven't found anything different than what I am already doing. Can anyone tell me what I am doing wrong here? <asp:TextBox ID="txtActualCost" runat="server" Width="120px" CausesValidation="true"></asp:TextBox> <asp:RegularExpressionValidator ID="regExValActualCost" ControlToValidate="txtActualCost" Text="*" ValidationExpression="^\$?(\d{1,3}(\,\d{3})*|(\d+))(\.\d{2})?$" ErrorMessage="Please enter a valid currency value for 'Actual Cost'" Display="Dynamic" EnableClientScript="true" runat="server" />

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  • Async file uploads in Firefox reset on any DOM change

    - by Vibhu
    I'm pretty sure this is a Firefox or flash-related bug, but I just want to check if anyone has ran into this problem or knows how to fix it. Basically, we have a multi-file upload widget for our highly dynamic web app (think Gmail). We've tried both uploadify for jQuery, and YUI uploader. We've also tried taking those out of our app interface and putting them in an iFrame. What happens is that in the event of any DOM manipulation, even if the uploader is in an iFrame, be it a tab change (in our web app) that covers the iframe temporarily, or a block, etc., the uploader will stop its current upload. In the case of YUI uploader, it fires the "contentReady" event again. This ONLY happens in Firefox. IE and Chrome are fine. In case you are wondering, we really don't have any custom needs here. Just need to have multi-upload file support, and we need to give people free reign to tab around in our interface while an upload is in progress. It seems like Yahoo! and Gmail have both solved this problem. How? What are we doing wrong?

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  • Mono ASP.NET Oracle Connection

    - by bladepit
    Hello to everybody, if i want to connect to orcale i became the following error: libclntsh.so Description: HTTP 500. Error processing request. Stack Trace: System.DllNotFoundException: libclntsh.so at (wrapper managed-to-native) System.Data.OracleClient.Oci.OciCalls/OciNativeCalls.OCIEnvCreate (intptr&,System.Data.OracleClient.Oci.OciEnvironmentMode,intptr,intptr,intptr,intptr,int,intptr) <0x0005d at System.Data.OracleClient.Oci.OciCalls.OCIEnvCreate (intptr&,System.Data.OracleClient.Oci.OciEnvironmentMode,intptr,intptr,intptr,intptr,int,intptr) [0x00000] in /src/monoscript/mono-2.4.2.3/mcs/class/System.Data.OracleClient/System.Data.OracleClient.Oci/OciCalls.cs:738 at System.Data.OracleClient.Oci.OciEnvironmentHandle..ctor (System.Data.OracleClient.Oci.OciEnvironmentMode) [0x00013] in /src/monoscript/mono-2.4.2.3/mcs/class/System.Data.OracleClient/System.Data.OracleClient.Oci/OciEnvironmentHandle.cs:35 at System.Data.OracleClient.Oci.OciGlue.CreateConnection (System.Data.OracleClient.OracleConnectionInfo) [0x00000] in /src/monoscript/mono-2.4.2.3/mcs/class/System.Data.OracleClient/System.Data.OracleClient/OciGlue.cs:86 at System.Data.OracleClient.OracleConnectionPoolManager.CreateConnection (System.Data.OracleClient.OracleConnectionInfo) [0x00006] in /src/monoscript/mono-2.4.2.3/mcs/class/System.Data.OracleClient/System.Data.OracleClient/OracleConnectionPoolManager.cs:57 at System.Data.OracleClient.OracleConnectionPool.CreateConnection () [0x0000e] in /src/monoscript/mono-2.4.2.3/mcs/class/System.Data.OracleClient/System.Data.OracleClient/OracleConnectionPool.cs:97 at System.Data.OracleClient.OracleConnectionPool.GetConnection () [0x000ba] in /src/monoscript/mono-2.4.2.3/mcs/class/System.Data.OracleClient/System.Data.OracleClient/OracleConnectionPool.cs:74 at System.Data.OracleClient.OracleConnection.Open () [0x00061] in /src/monoscript/mono-2.4.2.3/mcs/class/System.Data.OracleClient/System.Data.OracleClient/OracleConnection.cs:410 at WebServer.Controllers.HomeController.Index () [0x00006] in /home/bhcweb/Projects/Controllers/HomeController.cs:19 at (wrapper dynamic-method) System.Runtime.CompilerServices.ExecutionScope.lambda_method (System.Runtime.CompilerServices.ExecutionScope,System.Web.Mvc.ControllerBase,object[]) <0x00080 at System.Web.Mvc.ActionMethodDispatcher.Execute (System.Web.Mvc.ControllerBase,object[]) <0x0001b at System.Web.Mvc.ReflectedActionDescriptor.Execute (System.Web.Mvc.ControllerContext,System.Collections.Generic.IDictionary2<string, object>) <0x000fd> at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod (System.Web.Mvc.ControllerContext,System.Web.Mvc.ActionDescriptor,System.Collections.Generic.IDictionary2) <0x0001c at System.Web.Mvc.ControllerActionInvoker/c_AnonStoreyB.<m_E () <0x00067 at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter (System.Web.Mvc.IActionFilter,System.Web.Mvc.ActionExecutingContext,System.Func`1) <0x000c4 What is my Problem there? I have read that i have to set my ORACLE_HOME AND LD_LIBRARY_PATH. If i do echo $ORACLE_HOME and $LD_LIBRARY_PATH the path which i have set is coming out: /usr/lib/oracle/xe/app/oracle/product/10.2.0/client/lib This is the path where the libclntsh.so is in. Is this right? Best regards bladepit

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  • Generating equals / hashcode / toString using annotation

    - by Bruno Bieth
    I believe I read somewhere people generating equals / hashcode / toString methods during compile time (using APT) by identifying which fields should be part of the hash / equality test. I couldn't find anything like that on the web (I might have dreamed it ?) ... That could be done like that : public class Person { @Id @GeneratedValue private Integer id; @Identity private String firstName, lastName; @Identity private Date dateOfBirth; //... } For an entity (so we want to exlude some fields, like the id). Or like a scala case class i.e a value object : @ValueObject public class Color { private int red, green, blue; } Not only the file becomes more readable and easier to write, but it also helps ensuring that all the attributes are part of the equals / hashcode (in case you add another attribute later on, without updating the methods accordingly). I heard APT isn't very well supported in IDE but I wouldn't see that as a major issue. After all, tests are mainly run by continuous integration servers. Any idea if this has been done already and if not why ? Thanks

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  • How do I change an attribute in an HTML table's cell if I know the row and column index of the cell?

    - by Mark
    I know nothing about jQuery but am an experienced C++ programmer (not sure if that helps or hurts). I found jQuery code that gives me the row and column index of a cell in an HTML table when a user clicks on that cell. Using such row-column index numbers, I need to change an attribute's value in the previously selected cell and in the cell just clicked. The index numbers are produced and saved with this code: var $trCurrent = 0; // Index of cell selected when page opens var $tdCurrent = 0; // i.e., previously selected cell $(document).ready(function () { $("td").click(function () { // How toclear previously selected cell's attribute here? ('class', 'recent') var oTr = $(this).parents("tr"); $tdCurrent = oTr.children("td").index(this); }); $("tr").click(function () { $trCurrent = $(this)[0].rowIndex; // How to set new attributes here? ('class', 'current'); // and continue work using information from currently selected cell }); }); Any help or hints would be appreciated. I do not even know if this is the way I should get the index of the row and column. Thanks.

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  • How to use ASP.NET Routing in a Quote of the Day Website

    - by SidC
    Good Afternoon, A client is interested in creating an ASP.NET 2.0 website whose purpose is to serve up a "quote of the day". He wants the quotes on static content pages all attached to the same master page. The quote pages must be viewed in a certain sequence, and site browsers cannot view any other pages than the starting page when browsing to the site. That is, everyone must go to page 001.aspx when entering the site. Two Questions: 1. The content pages are going to be created by the client using an excel data source and a merge process by which each quote page is created eg. 001.aspx, 002.aspx etc. This seems clunky to me at best. Would ASP.NET Dynamic Data be a better solution here? I'm new to ASP.NET Routing and URL Rewriting as a whole. How would I setup a route table to ensure that users always entered the site on the same entry page, and create a route table such that default.aspx resolves to 001.aspx? Thanks, Sid

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  • rails best practices where to place unobtrusive javascript

    - by nathanvda
    Hi there, my rails applications (all 2.3.5) use a total mix of inline javascript, rjs, prototype and jquery. Let's call it learning or growing pains. Lately i have been more and more infatuated with unobtrusive javascript. It makes your html clean, in the same way css cleaned it up. But most examples i have seen are small examples, and they put all javascript(jquery) inside application.js Now i have a pretty big application, and i am thinking up ways to structure my js. I like somehow that my script is still close to the view, so i am thinking something like orders.html.erb orders.js where orders.js contains the unobtrusive javascript specific to that view. But maybe that's just me being too conservative :) I have read some posts by Yehuda Katz about this very problem here and here, where he tackles this problem. It will go through your js-files and only load those relevant to your view. But alas i can't find a current implementation. So my questions: how do you best structure your unobtrusive javascript; manage your code, how do you make sure that it is obvious from the html what something is supposed to do. I guess good class names go a long way :) how do you arrange your files, load them all in? just a few? do you use content_for :script or javascript_include_tag in your view to load the relevant scripts. Or ... ? do you write very generic functions (like a delete), with parameters (add extra attributes?), or do you write very specific functions (DRY?). I know in Rails 3 there is a standard set, and everything is unobtrusive there. But how to start in Rails 2.3.5? In short: what are the best practices for doing unobtrusive javascript in rails? :)

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  • Getting message in android app: Binary XML file line #2: You must supply a layout_width attribute.

    - by opike
    I'm trying to use a ListView inside of a RelativeLayout but when I run my app I get a runtimeexception with the message: Binary XML file line #2: You must supply a layout_width attribute. I tried putting layout_width attributes in every conceivable place in the xml resource files but so far no luck. I attempt to populate the listview with this line of code: setListAdapter(new ArrayAdapter(this, R.layout.tablerow3, R.id.label, items)); Here's the tablerow3.xml contents: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"> android:layout_width="20dp" android:layout_height="5dp" android:id="@+id/tablerow01"> <Label android:id="@+id/label01" android:layout_width="5dp" android:layout_height="5dp" android:textColor="@color/solid_white" android:singleLine="true"/> <Label android:id="@+id/label02" android:layout_width="5dp" android:layout_height="5dp" android:textColor="@color/solid_white" android:singleLine="true"/> </LinearLayout> Here's the xml that contains the RelativeLayout(forex2.xml): <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent"> <Button android:text="Static Button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:id="@+id/button_id"> </Button> <Spinner android:id="@+id/spinner1" android:layout_width="match_parent" android:layout_toRightOf="@id/button_id" android:layout_alignParentTop="true" android:layout_height="wrap_content" android:drawSelectorOnTop="true" /> <ListView android:id="@android:id/list" android:layout_width="5dp" android:layout_height="5dp" android:layout_alignParentBottom="true" /> <!-- android:layout_width="wrap_content" android:layout_height="wrap_content" --> </RelativeLayout>

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  • In which order is model binding and validation done in ASP.NET MVC 2?

    - by Simon Bartlett
    I am using ASP.NET MVC 2, and am using a view-model per view approach. I am also using Automapper to map properties from my domain-model to the view-model. Take this example view-model (with Required data annotation attributes for validation purposes): public class BlogPost_ViewModel { public int Id { get; set; } [Required] public string Title { get; set; } [Required] public string Text { get; set; } } In the post editor view I am using a rich text editor (CKeditor). Because CKeditor is a HTML editor, I ideally need CKeditor to HTMLencode the user's input when the form is submitted, so that ASP.NET's input validation does not complain. This is not a problem as CKeditor has this functionality built in, however I need CKeditor's output decoded before mapping back to the domain object (via Automapper). I am wanting to add a new property (to the view-model above) to solve this, as follows: public string HTMLEncodedText { get { return HTMLEncode(Text); } set { Text = HTMLDecode(value); } } I can then bind this property to CKeditor in the view, but still use Automapper to map the 'Text' property in the controller - all without having to turn input-validation off. My question is: do you know how the model binding and validation process in ASP.NET MVC 2 works? Are all model properties binded before validation is carried out? Or is each individual property get validated when it is being set. I think ideally for my idea to work, all properties need to be set before the model is validated.

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  • Inflated ImageView to put in GalleryView isn't the right size

    - by Richard
    I am trying to inflate an ImageView that scales a Drawable that I can display in a GalleryView. My code to inflate the view seems to work fine, except that the attributes of the ImageView are not applied. Specifically, the inflated ImageView does not have the width/height that I set for it via the android:layout params in XML. Can someone show me what I'm doing wrong? I want to set the width/height of the image in dp, so that it is the correct size across multiple screen dpis and support Android 1.5+. As a result I cannot use something like: i.setLayoutParams(new Gallery.LayoutParams(150, 116) My layout definition is: <?xml version="1.0" encoding="utf-8"?> <ImageView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="150dp" android:layout_height="116dp" android:background="@drawable/gallery_item_background" android:scaleType="fitXY" /> </ImageView> And the snippet I am using to inflate the ImageView is: public View getView(int position, View convertView, ViewGroup parent) { LayoutInflater inflater = getLayoutInflater(); ImageView i = (ImageView) inflater.inflate(R.layout.gallery_item, null); i.setImageResource(mImageIds.get(position)); i.setScaleType(ImageView.ScaleType.FIT_XY); return i; }

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  • How to stop MVC caching the results of invoking and action method?

    - by Trey Carroll
    I am experiencing a problem with IE caching the results of an action method. Other articles I found were related to security and the [Authorize] attribute. This problem has nothing to do with security. This is a very simple "record a vote, grab the average, return the avg and the number of votes" method. The only slightly interesting thing about it is that it is invoked via Ajax and returns a Json object. I believe that it is the Json object that is getting catched. When I run it from FireFox and watch the XHR traffic with Firebug, everything works perfectly. However, under IE 8 the "throbber" graphic doesn't ever have time to show up and the page elements that display the "new" avg and count that are being injected into the page with jQuery are never different. I need a way to tell MVC to never cache this action method. This article seems to address the problem, but I cannot understand it: http://stackoverflow.com/questions/1441467/prevent-caching-of-attributes-in-asp-net-mvc-force-attribute-execution-every-tim I need a bit more context for the solution to understand how to extend AuthorizationAttribute. Please address your answer as if you were speaking to someone who lacks a deep understanding of MVC even if that means replying with an article on some basics/prerequisites that are required. Thanks, Trey Carroll

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  • Connecting repeatable and non-repeatble backgrounds without a seam

    - by Stiggler
    I have a 700x300 background repeating seamlessly inside of the main content-div. Now I'd like to attach a div at the bottom of the content-div, containing a different background image that isn't repeatable, connecting seamlessly with the repeatable background above it. Essentially, the non-repeatable image will look like the end piece of the repeatable image. Due to the nature of the pattern, unless the full 300px height of the background image is visible in the last repeat of the content-div's backround, the background in the div below won't seamlessly connect. Basically, I need the content div's height to be a multiple of 300px under all circumstances. What's a good approach to this sort of problem? I've tried resizing the content-div on loading the page, but this only works as long as the content div doesn't contain any resizing, dynamic content, which is not my case: function adjustContentHeight() { // Setting content div's height to nearest upper multiple of column backgrounds height, // forcing it not to be cut-off when repeated. var contentBgHeight = 300; var contentHeight = $("#content").height(); var adjustedHeight = Math.ceil(contentHeight / contentBgHeight); $("#content").height(adjustedHeight * contentBgHeight); } $(document).ready(adjustContentHeight); What I'm looking for there is a way to respond to a div resizing event, but there doesn't seem to be such a thing. Also, please assume I have no access to the JS controlling the resizing of content in the content-div, though this is potentially a way of solving the problem. Another potential solution I was thinking off was to offset the background image in the bottom div by a certain amount depending on the height of the content-div. Again, the missing piece seems to be the ability to respond to a resize event.

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  • Cocoa Core data: cannot save Created Items in NSTableview

    - by Paul Rostorp
    Hello, I'm am a beginner in mac os x development and am trying to get started with all this. Here is my problem : I've create a non-document based cocoa app using core data as storage. I've added an entity and attributes to the xdatamodel. In IB i've created an NSArrayController and linked it properly. I've created an nstableview binded to the nsarraycontroller. Next I added a button linked to nsarraycontroller with the " add: " method. When I try it out, I can add and edit the items in the table. Here comes the problem: Core data is supposed to save everything automatically, but to make sure i linked the "save" button in the menu to the appdelegate and to the " file's owner" , first responder, application... everything possible ( with both " save :" and " saveaction:" methods ). And still it doesn't save when clicking save: when I restart the cell created ( and renamed ) are gone. And also, I didn't even edit the source code yet; core data for such simple tasks is supposed to only need Interface builder. Please help me for this, I haven't found any threads resolving this problem. Thank you in advance.

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  • Efficient alternative to merge() when building dataframe from json files with R?

    - by Bryan
    I have written the following code which works, but is painfully slow once I start executing it over thousands of records: require("RJSONIO") people_data <- data.frame(person_id=numeric(0)) json_data <- fromJSON(json_file) n_people <- length(json_data) for(lender in 1:n_people) { person_dataframe <- as.data.frame(t(unlist(json_data[[person]]))) people_data <- merge(people_data, person_dataframe, all=TRUE) } output_file <- paste("people_data",".csv") write.csv(people_data, file=output_file) I am attempting to build a unified data table from a series of json-formated files. The fromJSON() function reads in the data as lists of lists. Each element of the list is a person, which then contains a list of the attributes for that person. For example: [[1]] person_id name gender hair_color [[2]] person_id name location gender height [[...]] structure(list(person_id = "Amy123", name = "Amy", gender = "F", hair_color = "brown"), .Names = c("person_id", "name", "gender", "hair_color")) structure(list(person_id = "matt53", name = "Matt", location = structure(c(47231, "IN"), .Names = c("zip_code", "state")), gender = "M", height = 172), .Names = c("person_id", "name", "location", "gender", "height")) The end result of the code above is matrix where the columns are every person-attribute that appears in the structure above, and the rows are the relevant values for each person. As you can see though, some data is missing for some of the people, so I need to ensure those show up as NA and make sure things end up in the right columns. Further, location itself is a vector with two components: state and zip_code, meaning it needs to be flattened to location.state and location.zip_code before it can be merged with another person record; this is what I use unlist() for. I then keep the running master table in people_data. The above code works, but do you know of a more efficient way to accomplish what I'm trying to do? It appears the merge() is slowing this to a crawl... I have hundreds of files with hundreds of people in each file. Thanks! Bryan

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  • Out of Core Implementation of a Quadtree

    - by Nima
    Hi, I am trying to build a Quadtree data structure(or let's just say a tree) on the secondary memory(Hard Disk). I have a C++ program to do so and I use fopen to create the files. Also, I am using tesseral coding to store each cell in a file named with its corresponding code to store it on the disk in one directory. The problem is that after creating about 1,100 files, fopen just returns NULL and stops creating new files. I can create further files manually in that directory, but using C++ it can not create any further files. I know about max limit of inode on ext3 filesystem which is (from Wikipedia) 32,000 but mine is way less than that, also note that I can create files manually on the disk; just not through fopen. Also, I really appreciate any idea regarding the best way to store a very dynamic quadtree on disk(I need the nodes to be in separate files and the quadtree might have a depth of 50). Using nested directories is one idea, but I think it will slow down the performance because of following the links on the filesystem to access the file. Thanks, Nima

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  • Question about mixing MEF and Unity

    - by Dave
    I'm finally diving into Unity head first, and have run into my first real problem. I've been gradually changing some things in my app from being MEF-resolved to Unity-resolved. Everything went fine on the application side, but then I realized that my plugins were not being loaded. I started to look into this issue, and I believe it's a case where MEF and Unity don't mix. Plugins are loaded by MEF, but each plugin needs to get access to the shared libraries in my application, like app preferences, logging, etc. Initially, my plugin constructor had the ImportingConstructor attribute. I then replaced it with InjectionConstructor so that Unity could resolve its shared library dependencies. But because I did that, MEF no longer loaded it! Then I used both attributes, which compiled, but then I got a composition error (MEF). I figured that this was because the constructor takes a parameter that was once resolved by a MEF Import, so I removed all parameters. As expected, now MEF was able to load my plugin, but because the constructor needs to call into the interface that was once passed in, construction fails. So now I'm at a point where I can get MEF to start to load my plugin, but can't do anything with it because the plugin relies on shared libraries that are registered with Unity. For those of you that have successfully mixed MEF and Unity, how do you go about resolving the references to the shared libraries with Unity? It seems like a catch-22, where in order to have Unity work with the plugin, I'd have to create the plugin via Resolve, but then it's impossible to use MEF. UPDATE I can work around this problem by using an ImportingConstructor for the plugin that takes an IUnityContainer, and then call Resolve for each interface that I need, but although it works, it is incredibly lame to do it this way, as this would require all plugin authors to remember to save a reference to the passed in IUnityContainer...

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  • Rails 3: Parsing XML

    - by gjb
    I have a simple XML document in the following format: <?xml version="1.0" encoding="utf-8"?> <object> <strField>Foo</strField> <intField>1</intField> <dateField>2010-11-03</dateField> <boolField>true</boolField> <nilField></nilField> </object> I would like to parse this into a Hash to be passed to Model.create: {:object => { :strField => 'Foo', :intField => 1, :dateField => Date.today, :boolField => true, :nilField => nil }} Sadly there are no "type" attributes in the XML, so using Hash.from_xml just parses each field as a string. What I am looking for is some sort of field type auto detection. I have also looked at Nokogiri, but that can't output as a Hash. What is the simplest and most efficient way to achieve this? Many thanks.

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  • Simple .HTACCESS Passing Variables

    - by Willie Murray III
    Let's says I have a classifieds site which has a URL structure similar to the one which I have listed below: Ex. http://takarat.com/openclassifieds/?category=iphone&location=tennessee This is what shows up when I click "tennessee" as the location and then click on "iphone" as the category. Now let's say this site has a search box and I wanted a URL which comes up after using this search box to show up as opposed to the previous URL. Let's say that whenever I search for the word "iphone" while WITHIN the iphone CATEGORY the following link shows up: Iphone SEARCH Ex. http://takarat.com/openclassifieds/?s=iphone&category=iphone&location=tennessee Ok, I want THAT iphone SEARCH to come up whenever anyone clicks Tennessee Iphone..How would I do this [by the way, I want this to be dynamic so that I can use the code for different combinations of locations and products etc..I want the code to use the CATEGORY name to conduct the search basically]? I believe that this will involve "Passing varibles" from the original link... I am new to programming so I may have my terminology wrong. Any help would be appreciated. Thanks in advance. TURN THIS: takarat.com/openclassifieds/?category=iphone[var 1]&location=tennessee[var2] INTO THIS: takarat.com/openclassifieds/?s=iphone[var 1]&category=iphone[var 1]&location=tennessee[var2]

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  • Flexible Decorator Pattern?

    - by Omar Kooheji
    I was looking for a pattern to model something I'm thinking of doing in a personal project and I was wondering if a modified version of the decorator patter would work. Basicly I'm thinking of creating a game where the characters attributes are modified by what items they have equiped. The way that the decorator stacks it's modifications is perfect for this, however I've never seen a decorator that allows you to drop intermediate decorators, which is what would happen when items are unequiped. Does anyone have experience using the decorator pattern in this way? Or am I barking up the wrong tree? Clarification To explain "Intermediate decorators" if for example my base class is coffe which is decorated with milk which is decorated with sugar (using the example in Head first design patterns) milk would be an intermediate decorator as it decorates the base coffee, and is decorated by the sugar. Yet More Clarification :) The idea is that items change stats, I'd agree that I am shoehorning the decorator into this. I'll look into the state bag. essentially I want a single point of call for the statistics and for them to go up/down when items are equiped/unequiped. I could just apply the modifiers to the characters stats on equiping and roll them back when unequiping. Or whenever a stat is asked for iterate through all the items and calculate the stat. I'm just looking for feedback here, I'm aware that I might be using a chainsaw where scissors would be more appropriate...

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  • BizTalk SMTP Message Part Getting XML Encoding

    - by alram
    I have a email multi-part message which I am using to send failed message routing from the messagebox to a business users mailbox. Email{ Body - RawString; OriginalMessage - string}; The original message gets set from the received message that activates the orchestration. For example assume the original failed message is from a Flat file that failed disassembly with the contents: Order,1,2,3,4,5,<6>, I set the message using: Email.OriginalMessage = MyUtil.XlangMsgToStringMethod(FailedMessage);// XmlDocument type, this can be malformed xml, valid xml, or flat file that fails in disassembler. I can then write to the event log to test whats in Email.OriginalMessage: System.Diagnostics.EventLog.WriteEntry("BizTalk Server 2006", Email.OriginalMessage, Information); // This displays the correct original message "Order, 1,2,3,4,5,<6," When the email is delivered using a SMTP server and a dynamic send port, with the attachment set to text/plain mime type, the original message gets xml encoding escaped and wrapped in xml: <?xml version="1.0"?> <string>Order, 1,2,3,4,5,&lt;6&gt;,</string> Any ideas why? The SMTP port has passthrutransmit as pipeline. Thanks.

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