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  • Best Maven plugins

    - by ripper234
    We are just moving to Maven, and I understand there is a world of different plugins & extensions. Which are the best ones you recommend for general usage? (On plugin per answer please)

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  • Rotate array clockwise

    - by user69514
    I have a two dimensional array that I need to rotate 90 degrees clockwise, however I keep getting arrayindexoutofbounds... public int[][] rorateArray(int[][] arr){ //first change the dimensions vertical length for horizontal length //and viceversa int[][] newArray = new int[arr[0].length][arr.length]; //invert values 90 degrees clockwise by starting from button of //array to top and from left to right int ii = 0; int jj = 0; for(int i=0; i<arr[0].length; i++){ for(int j=arr.length-1; j>=0; j--){ newArray[ii][jj] = arr[i][j]; jj++; } ii++; } return newArray; }

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  • OSGI Declarative Services (DS): What is a good way of using service component instances

    - by Christoph
    I am just getting started with OSGI and Declarative Services (DS) using Equinox and Eclipse PDE. I have 2 Bundles, A and B. Bundle A exposes a component which is consumed by Bundle B. Both bundles also expose this service to the OSGI Service registry again. Everything works fine so far and Equinox is wireing the components together, which means the Bundle A and Bundle B are instanciated by Equinox (by calling the default constructor) and then the wireing happens using the bind / unbind methods. Now, as Equinox is creating the instances of those components / services I would like to know what is the best way of getting this instance? So assume there is third class class which is NOT instantiated by OSGI: Class WantsToUseComponentB{ public void doSomethingWithComponentB(){ // how do I get componentB??? Something like this maybe? ComponentB component = (ComponentB)someComponentRegistry.getComponent(ComponentB.class.getName()); } I see the following options right now: 1. Use a ServiceTracker in the Activator to get the Service of ComponentBundleA.class.getName() (I have tried that already and it works, but it seems to much overhead to me) and make it available via a static factory methods public class Activator{ private static ServiceTracker componentBServiceTracker; public void start(BundleContext context){ componentBServiceTracker = new ServiceTracker(context, ComponentB.class.getName(),null); } public static ComponentB getComponentB(){ return (ComponentB)componentBServiceTracker.getService(); }; } 2. Create some kind of Registry where each component registers as soon as the activate() method is called. public ComponentB{ public void bind(ComponentA componentA){ someRegistry.registerComponent(this); } or public ComponentB{ public void activate(ComponentContext context){ someRegistry.registerComponent(this); } } } 3. Use an existing registry inside osgi / equinox which has those instances? I mean OSGI is already creating instances and wires them together, so it has the objects already somewhere. But where? How can I get them? Conclusion Where does the class WantsToUseComponentB (which is NOT a Component and NOT instantiated by OSGI) get an instance of ComponentB from? Are there any patterns or best practises? As I said I managed to use a ServiceTracker in the Activator, but I thought that would be possible without it. What I am looking for is actually something like the BeanContainer of Springframework, where I can just say something like Container.getBean(ComponentA.BEAN_NAME). But I don't want to use Spring DS. I hope that was clear enough. Otherwise I can also post some source code to explain in more detail. Thanks Christoph UPDATED: Answer to Neil's comment: Thanks for clarifying this question against the original version, but I think you still need to state why the third class cannot be created via something like DS. Hmm don't know. Maybe there is a way but I would need to refactor my whole framework to be based on DS, so that there are no "new MyThirdClass(arg1, arg2)" statements anymore. Don't really know how to do that, but I read something about ComponentFactories in DS. So instead of doing a MyThirdClass object = new MyThirdClass(arg1, arg2); I might do a ComponentFactory myThirdClassFactory = myThirdClassServiceTracker.getService(); // returns a if (myThirdClassFactory != null){ MyThirdClass object = objectFactory.newInstance(); object.setArg1("arg1"); object.setArg2("arg2"); } else{ // here I can assume that some service of ComponentA or B went away so MyThirdClass Componenent cannot be created as there are missing dependencies? } At the time of writing I don't know exactly how to use the ComponentFactories but this is supposed to be some kind of pseudo code :) Thanks Christoph

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  • Mibble MIB Parser - extracting comments from the mib.

    - by this.matt
    I am using the Mibble MIB Parser to extract all simple data types from an MIB file. I've been successful until my attempt to extract comment text. Take the following module as an example: invBookList OBJECT-TYPE SYNTAX INTEGER { mobydick(1), -- call me ishmael paradiselost(2), -- aComment 1984(3), -- aComment solaris(4) -- aComment } MAX-ACCESS read-only STATUS current DESCRIPTION "A few Books for an example." ::= { invMasterList 43 } According to Mibble's API, the OBJECT-TYPE can be accessed by extracting an SnmpObjectType and then calling the appropriate getter method. Which I have done, and can successfully extract all of the text except the comments in the INTEGER syntax. I have tried calling getSyntax().getComment() on the SnmpObjectType, but always returns null. getSyntax() will extract the INTEGER syntax, e.g.: mobydick(1),paradiselist(2),1984(3),solaris(4) but unfortunately strips out the comments. Any one out there have experience with Mibble Parser who knows how to extract the comments? Many Thanks.

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  • ListAdapter to modify the datasource (which is an arraylist)

    - by dusker
    Hi Everyone, here's a problem that i've run into lately: I have a listview with a custom adapter class, the adapter takes in a listview and populates the listview with elements from it. Now, i'd like to have a button on each row of a listview to remove the item from it. How should i approach this problem? Is there a way to remotely trigger a method in the activity class and call notifydatachanged() method on the adapter to refresh the listview? thanks in advance for your help and some code snippets if possible best regards peter

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  • LWUIT HtmlComponent

    - by Pavan Kumar Ragi
    I've an Html String: String html="<p><img border=\"1\" align=\"left\" width=\"150\" vspace=\"2\" hspace=\"2\" height=\"159\" src=/"tmdbuserfiles/ntr-vv-vinayak-pics.jpg\" alt=\"Prithvi II, ballistic missile, DRDO, armed forces,Chandipur, Balasore district, Odisha State\" />The Strategic Forces Command of the armed forces successfully flight-tested the surface-to-surface Prithvi II missile from Chandipur in Balasore </P>"; I want to display the text as well as Image on my LWUIT Form Screen,For my Requirement I've used the below code: public class LwuitMidlet extends MIDlet { public void startApp() { Display.init(this); Form f = new Form("Hello, LWUIT!"); String html="<p><img border=\"1\" align=\"left\" width=\"150\" vspace=\"2\" hspace=\"2\" height=\"159\" src=www.teluguone.com/tmdbuserfiles/ntr-vv-vinayak-pics.jpg\" alt=\"Prithvi II, ballistic missile, DRDO, armed forces,Chandipur, Balasore district, Odisha State\" />The Strategic Forces Command of the armed forces successfully flight-tested the surface-to-surface Prithvi II missile from Chandipur in Balasore </P>"; HTMLComponent com=new HTMLComponent(); com.setPreferredSize(new Dimension(300,300)); com.setHTML(html, null, null, false); com.setShowImages(true); //com.setHTML(image, null, null, false); f.addComponent(com); f.show(); } public void pauseApp() { } public void destroyApp(boolean unconditional) { } } If i use the above code,I'm able to display only the text,but i'm not able to display the image,I've tested my app on Nokia SDK 2.O and SDK 3.0.5 can any one help me?

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  • How to add action related to a business object in Metawidget?

    - by Gulcan
    I use Netbeans 6.8 and try to obtain user interface by using metawidget and JPA. I cannot say @Action public void save( ActionEvent event ) { mSearchMetawidget.save(); } This annotation gives "incompatible types" error when I add following import. import org.metawidget.inspector.impl.actionstyle.Action; What to do? How can I add an action related to my User entity. I want to do "register" action. Thanks in advance

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  • Using Hibernate to do a query involving two tables

    - by Nathan Spears
    I'm inexperienced with sql in general, so using Hibernate is like looking for an answer before I know exactly what the question is. Please feel free to correct any misunderstandings I have. I am on a project where I have to use Hibernate. Most of what I am doing is pretty basic and I could copy and modify. Now I would like to do something different and I'm not sure how configuration and syntax need to come together. Let's say I have two tables. Table A has two (relevant) columns, user GUID and manager GUID. Obviously managers can have more than one user under them, so queries on manager can return more than one row. Additionally, a manager can be managing the same user on multiple projects, so the same user can be returned multiple times for the same manager query. Table B has two columns, user GUID and user full name. One-to-one mapping there. I want to do a query on manager GUID from Table A, group them by unique User GUID (so the same User isn't in the results twice), then return those users' full names from Table B. I could do this in sql without too much trouble but I want to use Hibernate so I don't have to parse the sql results by hand. That's one of the points of using Hibernate, isn't it? Right now I have Hibernate mappings that map each column in Table A to a field (well the get/set methods I guess) in a DAO object that I wrote just to hold that Table's data. I could also use the Hibernate DAOs I have to access each table separately and do each of the things I mentioned above in separate steps, but that would be less efficient (I assume) that doing one query. I wrote a Service object to hold the data that gets returned from the query (my example is simplified - I'm going to keep some other data from Table A and get multiple columns from Table B) but I'm at a loss for how to write a DAO that can do the join, or use the DAOs I have to do the join. FYI, here is a sample of my hibernate config file (simplified to match my example): <hibernate-mapping package="com.my.dao"> <class name="TableA" table="table_a"> <id name="pkIndex" column="pk_index" /> <property name="userGuid" column="user_guid" /> <property name="managerGuid" column="manager_guid" /> </class> </hibernate-mapping> So then I have a DAOImplementation class that does queries and returns lists like public List<TableA> findByHQL(String hql, Map<String, String> params) etc. I'm not sure how "best practice" that is either.

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  • Eclipse RCP: Actions vs Commands - would like an update

    - by nEm
    I know this question has been asked before but it was in 2009 and I haven't found anything more recent either on the web. I was wondering if the answer in that still holds or can it be updated? I am just starting work on an RCP and I haven't been able to decide between actions and commands for my menu items. I will be using a lot of the ones provided by Eclipse such as the Edit, File and some of their sub menu items as well. Since it has been nearly two years for the answer provided in the '09 question, I just wanted to make sure there is nothing else that could sway my decision in either direction or maybe if there have been some new developments that I am not aware of.

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  • Placing figure in top-right corner of another

    - by Ivan Dubrov
    I want child figure (org.eclipse.draw2d.Figure) to be relative to the top-right corner of the parent (I want place some small icon, which will be ImageFigure, to be 12 pixels from top and right borders). Is there an existing layout manager that can layout child this way? The org.eclipse.draw2d.XYLayout is not capable of measuring position relative to corner other than top-left. Of course, I can: Write layout manager myself Layout children figure every time bounds are changed for the parent (in parent layout() method). However, I would like to know if some existing layout manager provides that functionality.

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  • JMS Topic vs Queue - Intent

    - by Sandeep Jindal
    I am trying to understand on the design requirements for using Queue, and could not find this question (with answer). My understanding: Queue means one-to-one. Thus it would be used in a special case (if not rare, very few cases) when a designer is sure that the message would be intended for only one consumer. But even in those cases, I may want to use Topic (just to be future safe). The only extra case I would have to do is to make (each) subscription durable. Or, I special situations, I would use bridging / dispatcher mechanism. Give above, I would always (or in most cases) want to publish to a topic. Subscriber can be either durable topic(s) or dispatched queue(s). Please let me know what I am missing here or I am missing the original intent?

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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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  • Has anybody use javafx on CDC J9?

    - by 4NDR01D3
    Is that possible?? I mean, I have an already working project that runs in windows mobile using the J9 virtual machine for CDC. My user interface there is using AWT and it works fine and it looks OK, but been honest it doesn't take real advantage of the devices were is running... So I start reading about JavaFX and that looks really cool, but all that I see about mobiles there is applied to CLDC, MIDP, etc. but my application is already running on CDC J9 and I can't change this cause I'm using a Derby database on it. So, my plan is to code the GUI again, but keeping the logic of the application. So do you guys think javafx is the way to go? or, am I wasting my time learning javafx for this project. Thanks in advance, Gustavo.

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  • Wicket: Relative to absolute URL or get base URL

    - by Gilean
    If I have a relative path to a static asset (flash/blah.swf), what is the best way to convert this to an absolute URL (http://localhost/app/flash/blah.swf)? Or what is the best way to get the base URL of the Wicket application? I've tried using RequestUtils.toAbsolutePath but it doesn't seem to work reliably and is frequently throwing exceptions.

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  • starting and stopping hsqldb from unit tests

    - by Casey
    I'm trying to create integration tests using hsqldb in an in memory mode. At the moment, I have to start the hsqldb server from the command line before running the unit tests. I would like to be able to be able to control the hsqldb server from my integration tests. I can't seem to get this to all work out though from code. Thanks, Casey Update: This appears to work along with having a hibernate.cfg.xml file in the classpath: org.hsqldb.Server.main(new String[]{}); and in my hibernate.cfg.xml file: <property name="connection.driver_class">org.hsqldb.jdbcDriver</property> <property name="connection.url">jdbc:hsqldb:mem:ww</property> <property name="connection.username">sa</property> <property name="connection.password"></property> <property name="connection.pool_size">1</property> <property name="dialect">org.hibernate.dialect.HSQLDialect</property> <property name="current_session_context_class">thread</property> <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property> <property name="hbm2ddl.auto">update</property>

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  • IVR-style dialog system

    - by unbeli
    I need to build a dialog system similar to IVR used in call centers. My system is not phone-based, but the dialog is similar. Something like System: "Main menu: Enter [1] for menu1, [2] for menu2" User: [1] System: "menu1: enter [1] for apples, [2] for oranges, [3] for main menu" User: [7] System: "What??" System: "menu1: enter [1] for apples, [2] for oranges, [3] for main menu" User: [2] ... and so on I want to have a nice declarative description of all the possible options and a nice way to run through that tree, guided by user input. Already considered: ANTLR-generated lexer/parser (seems to be an overkill), SCXML-based state machine (seems like only transitions can be declared, the rest needs to be coded)

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  • Ways to polling server status

    - by Yijinsei
    Hi guys, I am try to create a JSP page that will show all the status in a group of local servers. Currently I create a schedule class that will constantly poll to check the status of the server with 30 second interval, with 5 second delay to wait for each server reply, and provide the JSP page with the information. However I find this way to be not accurate as it will take some time before the information of the schedule class to be updated. Do you guys have a better way to check the status of several server within a local network?

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  • algorithm for image comparison

    - by Rajnikant
    Please consider following use case, I have one bigger image, lets called is master image. Now from some where else, I am getting one small image. I want to check whether this small image is subset of master image or not. important points are, smaller image might have different file format, smaller image might captured from comparatively different view. smaller image may have different light intensity. At this stage of algorithm/computation advancement, which level of accuracy I could expect? Any algorithm/open source implementation that would have such implementation? Thanks, Rajnikant

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  • JEditorPanes, Preferred Size, and printing HTML

    - by Ryan Elkins
    I'm trying to print some HTML directly, without displaying anything to the user. It works currently (somewhat) using a custom JEditorPane that implements Printable. The problem I'm having is that it always wants to use a preferred size of 582px x 560px. If I manually change the size using something like setSize(x,y) it will change the size of the pane, put the content renders at preferred size, not actual size (so it's still 582x560). I can scale it up to fit the page, but it's basically just an enlarged version where the images are all pixelated and the layout is wrong (based on the smaller window size). Inside the print method of my Printable JEditorPane I used this to try and get the size: javax.swing.JWindow wnd = new javax.swing.JWindow(); wnd.setContentPane(this); wnd.setSize(1024,1584); wnd.pack(); Dimension d = wnd.getPreferredSize(); With or without that setSize and/or pack methods on the JWindow the preferred size always comes back as 582x560. I do have control over the html that I'm trying to print but I'd rather not have to rewrite all of that to scale it down so it will print correctly at full size (when scaled up).

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  • extract day from Date

    - by Daniel
    i receive a timestamp from a soap service in miliseconds.. so i do Date date = new Date(mar.getEventDate()); how can i extract the day of the month from date, since getDay() and so are deprecated? im using a small hack, but i dont think this is the proper way.. SimpleDateFormat sdf = new SimpleDateFormat("dd"); int day = Integer.parseInt(sdf.format(date));

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  • Does Hibernate 3.5.0-CR-2 release support JPA2.0

    - by fool
    I see that Hibernate home page has a symbol informing that it implements JSR 317, but I couldn't find if it implements the full spec. Does anybody knows if Hibernate 3.5.0-CR-2 fully implements the JSR 317? I can see from their JIRA that everything is closed related to JPA 2.0: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4190?subTaskView=all Anyone has experienced using JPA2.0 with Hibernate? Does it implement the full spec?

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