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  • FileFinder using SQL

    - by James Morgan
    I was thinking of working on a project while I have some free time and this one looks pretty nice: http://mindprod.com/project/filefinder.html One thing I'm wondering about is that will it really be much faster compared to the regular windows search if I use SQL? I'm planning to use MySQL since it's open source. Also, do I need to be good at databases for this? I have basic knowledge about relational databases and can definitely make some SQL statements. Thanks.

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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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  • Portlet container like pluto or jetspeed on google app engine?

    - by Patrick Cornelissen
    I am trying to build something "portlet server"-ish on the google app engine. (as open source) I'd like to use the JSR168/286 standards, but I think that the restrictions of the app engine will make it somewhere between tricky and impossible. Has anyone tried to run jetspeed or an application that uses pluto internally on the google app engine? Based on my current knowledge of portlets and the google app engine I'm anticipating these problems: A war file with portlets is from the deployment standpoint more or less a complete webapp (yes, I know that it doesn't really work without a portal server). The war file may contain it's own web.xml etc. This makes deployment on the app engine rather difficult, because the apps are not visible to each other, so all portlet containing archives need to be included in the war file of the deployed "app engine based portal server". The "portlets" are (at least in liferay) started as permanent servlet processes, based on their portlet.xmls and web.xmls which is located in the same spot for every portlet archive that is loaded. I think this may be problematic in the app engine, because everything is in one big "web app", so it may be tricky to access the portlet.xmls from each archive. This prevents a 100% compatibility in my opinion. Is here anyone who has any experience with the combination of portlets and the app engine? Do you think it's feasible to modify jetspeed, pluto or any other portlet container to be able to run it on the app engine?

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  • JSF vs Stripes, which is best?

    - by Davoink
    Which is best, or in other words, whish is easiest to use? Stripes or JSF. Although I haven't used both in anger I need to gauge what is the best option to work with for both starting new projects and converting existing Struts projects. I have a fear that JSF won't render as nicely as I want but what are others experiences? Seems Stripes is far more straight forward, would I be correct in this assumption? Cheers.

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  • Why is ContextConfiguration location different in idea and eclipse

    - by jakob
    Hello experts. In my team we work both in Eclipse and Idea. That works pretty good, except for one minor issue that I can't figure out how to solve. When setting the ContextConfiguration location in our tests and running them inside Eclipse everything works like a charm: @Test(groups = { "database" }) @ContextConfiguration(locations = {" file:src/main/webapp/WEB-INF/applicationContext.xml" }) But in my Idea env I get "could not find applicationContext" error. I need to set the location like this(project name is services): @Test(groups = { "database" }) @ContextConfiguration(locations = {" file:services/src/main/webapp/WEB-INF/applicationContext.xml" }) The project structure is like this: parent.pom with two child poms: services.pom and other.pom. When running the test in the terminal from the service project like this: mvn -Dtest=com.mytest.service.somepackage.TheTest test there are no issues. I guess that since my project structure is parent-with-two-children the need of /service is necessary(The project is created by pointing out the parent pom). Is there a way to fix this? Could you please help me with a solution. thx

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  • SimpleDateFormat give inconsistent results

    - by Julien Gagnet
    I am trying to parse a date and I am getting different results when I run the code locally/BST compare to a server in Paris/CEST. I've reproduced the issue in a the following sample. This is trying to parse the start date for the Australian Grand Prix. TimeZone tz = TimeZone.getTimeZone("AET"); DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy HH mm"); dateFormat.setTimeZone(tz); long time = dateFormat.parse("28/03/2010 17 00").getTime(); System.out.println("Time "+time); It seems like I am setting the timezone correctly on the date format and the current timezone shouldn't be affecting the code. But locally it prints 1269756000000 and in Paris 1269759600000. Any idea?

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  • How do I set values for a class without using any setter methods?

    - by fari
    Please can anyone help me public class KalaGameState implements Cloneable { // your code goes here public KalaGameState(int startingStones) throws InvalidStartingStonesException { // your code goes here } public int getTurn() { // your code goes here } public int getKala(int playerNum) throws IllegalPlayerNumException { // your code goes here } public int getNumStones(int sidePitNum) throws IllegalSidePitNumException { // your code goes here } public int getNumStones(int playerNum, int sidePitNum) throws IllegalPlayerNumException, IllegalSidePitNumException { // your code goes here } public int getScore(int playerNum) throws IllegalPlayerNumException { // your code goes here } private int getSidePitArrayIndex(int sidePitNum) throws IllegalSidePitNumException { // your code goes here } public boolean gameOver() { // your code goes here } public void makeMove(int sidePitNum) throws IllegalSidePitNumException, IllegalMoveException { // your code goes here } }

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  • batch file command to run jar file

    - by Arivu2020
    I am created jar file.The jar file is an executable one.But how can i run the jar file from the out side,using created batch file.I want to know the batch file coding to run the jar file without mentioning class path. Or is there any way to do it?

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  • Creating an adjacency Matrix from a JUNG Graph.

    - by prince
    Graph < Integer, Integer> g = new SparseMultigraph<Integer, Integer>(); g.addVertex(1);g.addVertex(2);g.addVertex(3); g.addEdge(0,1,2 ,EdgeType.DIRECTED);g.addEdge(1,2,3 ,EdgeType.DIRECTED);g.addEdge(2,3,1 ,EdgeType.DIRECTED);g.addEdge(3,1,3 ,EdgeType.DIRECTED); How can I convert this graph into an adjacency matrix taking into consideration that it is a directed graph.

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  • What does this code mean?

    - by joseph
    Hello, I do not know, what is function of code lookups.singleton in code below public class ProjectNode extends AbstractNode { public ProjectNode(MainProject obj, ProjectsChildren children) { super (children, Lookups.singleton(obj)); setDisplayName ( obj.getName()); } }

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  • Alternative Control Structures

    - by Brock Woolf
    I've been wondering about alternative ways to write control structures. One that you learn early on for if statements is a replacement for this: if ( x ) { // true } else { // false } with this (sometimes this is more readable compared to lots of brackets): x ? true : false It got me thinking. Can we replace anything else incase it's more readable. We of course replace if statements like this: if (a < b) { return true; } else { return false; } with things like this: return a < b; We can save a long if with something like this (pretty much same as the one above): bool xCollisionTrue = (object.xPos < aabb.maxX && object.xPos > aabb.minX); So those are the ones I can think of off the top of my head for the if statement and doing comparisons. So I'm wondering what about looping constructs, for, while, etc. Maybe the code obfuscators might have some ideas.

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  • How do you get the selected value of a spinner -- Android

    - by Matthew Hall
    Hi everyone, I'm trying to get the selected items string out of a spinner. So far I've got this: bundle.putString(ListDbAdapter.DB_PRI, v.getText().toString()); This doesn'y work and gives a casting exception (I thought you could cast a view to a widget that inherits it... obviously not!). So how do you get the selected value of a spinner

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  • Java2D Distance Collision Detection

    - by Trizicus
    My current setup is only useful once collision has been made; obviously there has to be something better than this? public boolean CollisionCheck(Rectangle rect1, Rectangle rect2) { if(rect1.intersects(rect2)) { return true; } return false; } How can I do preemptive collision detection?

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  • replace characters which do not match with the ones in a regex

    - by Cristian Boariu
    Hi, I have this regex: private static final String SPACE_PATH_REGEX ="[a-z|A-Z|0-9|\\/|\\-|\\_|\\+]+"; I check if my string matches this regex and IF NOT, i want to replace all characters which are not here, with "_". I've tried like: private static final String SPACE_PATH_REGEX_EXCLUDE = "[~a-z|A-Z|0-9|\\/|\\-|\\_|\\+]+"; if (myCompanyName.matches(SPACE_PATH_REGEX)) { myNewCompanySpaceName = myCompanyName; } else{ myNewCompanySpaceName = myCompanyName.replaceAll( SPACE_PATH_REGEX_EXCLUDE, "_"); } but it does not work..., so in the 2nd regex "~" seems to not omit the following chars. Any idea?

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  • Class Self-Reference

    - by Free Bullets
    I have the following code. The angle function needs some information from the class it was called from. What's the best way to do this? class MyScannedRobotEvent extends robocode.ScannedRobotEvent { public int angle(robocode.Robot myRobot) { return (int) Math.toRadians((myRobot.getHeading() + getBearing()) % 360); } } public class MyRobot extends robocode.Robot { int a = angle(**WHATDOIPUTHERE?**) }

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  • Eclipselink read complex oject model in an ordered way

    - by Raven
    Hi, I need to read a complex model in an ordered way with eclipselink. The order is mandantory because it is a huge database and I want to have an output of a small portion of the database in a jface tableview. Trying to reorder it in the loading/quering thread takes too long and ordering it in the LabelProvider blocks the UI thread too much time, so I thought if Eclipselink could be used that way, that the database will order it, it might give me the performance I need. Unfortunately the object model can not be changed :-( The model is something like: @SuppressWarnings("serial") @Entity public class Thing implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; private String name; @OneToMany(cascade=CascadeType.ALL) @PrivateOwned private List<Property> properties = new ArrayList<Property>(); ... // getter and setter following here } public class Property implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; @OneToOne private Item item; private String value; ... // getter and setter following here } public class Item implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; private String name; .... // getter and setter following here } // Code end In the table view the y-axis is more or less created with the query Query q = em.createQuery("SELECT m FROM Thing m ORDER BY m.name ASC"); using the "name" attribute from the Thing objects as label. In the table view the x-axis is more or less created with the query Query q = em.createQuery("SELECT m FROM Item m ORDER BY m.name ASC"); using the "name" attribute from the Item objects as label. Each cell has the value Things.getProperties().get[x].getValue() Unfortunately the list "properties" is not ordered, so the combination of cell value and x-axis column number (x) is not necessarily correct. Therefore I need to order the list "properties" in the same way as I ordered the labeling of the x-axis. And exactly this is the thing I dont know how it is done. So querying for the Thing objects should return the list "properties" "ORDER BY name ASC" but of the "Item"s objects. My ideas are something like having a query with two JOINs. Joing Things with Property and with Item but somehow I was unable to get it to work yet. Thank you for your help and your ideas to solve this riddle.

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  • What reasons have people had to write their own classloader

    - by montyontherun
    I was recently asked in an interview about the order in which classloaders are called when a class is loaded. Unfortunately I've never had the need to write my own classloader so at the time was unfamiliar with the intricacies of classloading. This got me wondering, what reasons are their to write your own classloader. So that's my question: What scenarios have people faced which required the need to writing their own classloaders?

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  • SAXException: Unexpected end of file after null

    - by itsadok
    I'm getting the error in the title occasionally from a process the parses lots of XML files. The files themselves seem OK, and running the process again on the same files that generated the error works just fine. The exception occurs on a call to XMLReader.parse(InputStream is) Could this be a bug in the parser (I use piccolo)? Or is it something about how I open the file stream? No multithreading is involved. Piccolo seemed like a good idea at the time, but I don't really have a good excuse for using it. I will to try to switch to the default SAX parser and see if that helps. Update: It didn't help, and I found that Piccolo is considerably faster for some of the workloads, so I went back.

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  • How to center Label vertical and horizontal in draw2d Figure ?

    - by aphex
    I have the following situation: Label label = new Label(); label.setText("bla"); RoundedRectangle fig = new RoundedRectangle(); fig.add(label); FlowLayout layout = new FlowLayout(); layout.setStretchMinorAxis(true); fig.setLayoutManager(layout); fig.setOpaque(true); That works only to center the label vertical or horizontal by using layout.setHorizontal(true/false); , but not together. Any idea how to make it work ?

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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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  • how to implement more functionality in webpage

    - by trans
    Dear All, I have a website in front page i m displaying 5 records ,for different options,i want that when user licks more he should be able to view next records.i would i keep track as whicg list has already been shown to user,since i m using an arraylist,can i ipmlement it through that.

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