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• Setting session timezone with spring jdbc oracle

  - by user337620

  Hello I have a spring/jdbc/oracle 10g application. The Oracle server database timezone is set to GMT + 2 JVM timezone is GMT + 2 (even though it doesn't matter in my case). I have a stored procedure that performs some date operations. The problem is that session timezone is different(GMT) than database timezone even though I do not set session timezone explicit in my code/configuration. As far as I know the session timezone is by default equal to database timezone. Any idea why is the session timezone different than database timezone or how can I configure it in spring configuration (org.apache.commons.dbcp.BasicDataSource) ? Thank you.

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• FindBugs controversial description

  - by Tom Brito

  Am I understanding it wrong, or is the description wrong? Equals checks for noncompatible operand (EQ_CHECK_FOR_OPERAND_NOT_COMPATIBLE_WITH_THIS) This equals method is checking to see if the argument is some incompatible type (i.e., a class that is neither a supertype nor subtype of the class that defines the equals method). For example, the Foo class might have an equals method that looks like: public boolean equals(Object o) { if (o instanceof Foo) return name.equals(((Foo)o).name); else if (o instanceof String) return name.equals(o); else return false; This is considered bad practice, as it makes it very hard to implement an equals method that is symmetric and transitive. Without those properties, very unexpected behavoirs are possible. From: http://findbugs.sourceforge.net/bugDescriptions.html#EQ_CHECK_FOR_OPERAND_NOT_COMPATIBLE_WITH_THIS The description says that the Foo class might have an equals method like that, and after it says that "This is considered bad practice". I'm not getting the "right way".. How should the following method be to be right? @Override public boolean equals(Object obj) { if (obj instanceof DefaultTableModel) return model.equals((DefaultTableModel)obj); else return false; }

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• JDBC connection for a background thread being closed accessing in Websphere

  - by ferrari fan

  Hi, I have an application running in Websphere Portal Server inside of Websphere Application Server 6.0 (WAS). In this application for one particular functionality that takes a long time to complete, I am firing a new thread that performs this action. This new thread opens a new Session from Hibernate and starts performing DB transactions with it. Sometimes (haven't been able to see a pattern), the transactions inside the thread work fine and the process completes successfully. Other times however I get the errors below: org.hibernate.exception.GenericJDBCException: could not load an entity: [OBJECT NAME#218294] ... Caused by: com.ibm.websphere.ce.cm.ObjectClosedException: DSRA9110E: Connection is closed. Method cleanup failed while trying to execute method cleanup on ManagedConnection WSRdbManagedConnectionImpl@642aa0d8 from resource jdbc/MyJDBCDataSource. Caught exception: com.ibm.ws.exception.WsException: DSRA0080E: An exception was received by the Data Store Adapter. See original exception message: Cannot call 'cleanup' on a ManagedConnection while it is still in a transaction.. How can I stop this from happening? Why does it seem that WAS wants to kill my connections even though they're not done. Is there a way I can stop WAS from attempting to close this particular connection? Thanks

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• parsing string according to oracle operators with regex

  - by haluk

  Hi, Basically I was trying to replace the part of string with its actual value which comes immediately after oracle operators. I can do this for limited operators list like {=,,<} but I wonder that is there any way out to gather all the operators rather than giving them by hands? For instance, I have this string; "a = xyz", then I will replace xyz with lets say 3. But as you know we have bunch of operator namely "like,in,exists etc". So my string can also be this: "a like xyz". So what do you suggest me? Thanks.

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• Spring-Security with X509?

  - by jschoen

  I am new to spring-security in general and am a bit confused. The project I am trying to integrate this with uses X509 certificates to identify users for signing in to the application. There are no usernames or passwords. We validate the certificates are good, and that they have been given access to our app. The question is how do I integrate spring in to this to get their roles using the X509 certificates? I have seen this: <http> ... <x509 subject-principal-regex="CN=(.*?)," user-service-ref="userService"/> ... </http> But I don't understand how this works. Will it still require something for a password? Or is the subject all it needs?

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• fire and forget compared to http request

  - by cometta

  Hi, i looking for opinion from you all. I have a web application that need to records data into another web application database. I not prefer to use http request GET on 2nd application because of latency issue. I looking for fast way to save records on 2nd application quickly, i came across the idea of "fire and forget" , will JMX suit for this scenario? from my understanding jmx will gurantee message delivery. Let say i need to call at least 1000 random requests per seconds to 2nd application should i use jmx? http request? or xmpp instead?

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• how to reduce 2d array

  - by owca

  I have a 2d array, let's say like this : 2 0 8 9 3 0 -1 20 13 12 17 18 1 2 3 4 2 0 7 9 How to create an array reduced by let's say 2nd row and third column? 2 0 9 13 12 18 1 2 4 2 0 9

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• list in android

  - by hanumantharao

  How to put image and name in the list in android

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• Missing ant-javamail.jar file on Macintosh

  - by Ken

  I've been running the built-in Ant from the command line on a Macintosh (10.5.5) and have run into some trouble with the Mail task. Running the Mail task produces the following message: [mail] Failed to initialise MIME mail: org.apache.tools.ant.taskdefs.email.MimeMailer This is most likely due to a missing ant-javamail.jar file in the /usr/share/ant/lib directory. I see a "ant-javamail-1.7.0.pom" file in this directory but not the appropriate jar file. Anyone know why this jar file might be missing and what the best way to resolve the problem is?

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• Common way to compare timestamp in oracle, postgres and mssql

  - by Pratik

  Hi There! I am writing a sql query which involves finding if timestamp falls in particular range of days . I have written that in the postgres but it doesn't works in oracle and msssql. Is there are common way to compare the timestamp across different database. My postgres sql looks something like this ... AND creation_date < (CURRENT_TIMESTAMP - interval '5 days') AND creation_date >= (CURRENT_TIMESTAMP - interval '15 days') ... Thanks! Pratik

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• How to install jdt.core in eclipse locally?

  - by Chris

  Hi all, I'm needing to install the eclipse JDT.Core plugin locally (eg download the file with site.xml etc), as opposed to installing it remotely due to the horrible firewall at work. Can anyone suggest where to download it so i can do the local install? Thanks

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• Using Graphics2D to overlay text on a BufferedImage and return a BufferedImage

  - by Andrew Bolster

  I have checked similarly named questions, but they don't answer this use case. Basically, I was to overlay some text (text) at a given coordinate (x,y) I have the below function in a package; protected BufferedImage Process2(BufferedImage image){ Graphics2D gO = image.createGraphics(); gO.setColor(Color.red); gO.setFont(new Font( "SansSerif", Font.BOLD, 12 )); gO.drawString(this.text, this.x, this.y); System.err.println(this.text+this.x+this.y); return image; } I feel like im missing something patently obvious; every reference to Graphics2D I can find is dealing with either games or writing directly to a file but I just want a BufferedImage returned. with the overlay 'rendered' In the current code, the image appears out the end unchanged. Thanks!

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• Javassist: how to create proxy of proxy?

  - by Bozho

  I'm creating proxies with javassist ProxyFactory. When creating a single proxy all works fine. However, when I pass a proxied class to the proxying mechanism, it fails with javassist.bytecode.DuplicateMemberException: duplicate method: setHandler in com.mypackage.Bean_$$_javassist_0_$$_javassist_1 I'm creating the proxies with this: public Object createProxiedInstance(Object originalInstance) throws Exception { Class<?> originalClass = instance.getClass(); ProxyFactory factory = new ProxyFactory(); factory.setSuperclass(originalClass); factory.setHandler(new MethodHandler() {..}); Class<T> proxyClass = factory.createClass(); return proxyClass.newInstance(); } So, how do I create proxies of proxies? Update: The actual problems is that each proxy implements the ProxyObject which defines setHandler(..) method. So the 2nd proxy is trying to redefine the method, instead of overriding it in the subclass.

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• simplest criteria query

  - by c0mrade

  What is the simplest hibernate criteria query equivalent of SELECT name FROM people WHERE id='3' is it : criteria.add(Expression.eq("name ", 3)); and how can I retrieve it to String variable the value of name field, the IDs are unique

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• Java2d: JPanel set background color not working

  - by Algorist

  I am having the below code. public VizCanvas(){ { this.setBackground(Color.black); this.setSize(400,400); } } It worked fine and displays the panel in black background. But when I implement the paint method, which does nothing, the color changes to default color i.e gray. I tried to set graphics.setColor() but it didn't help. Thank you.

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• Mixing NIO with IO

  - by Steffen Heil

  Hi Usually you have a single bound tcp port and several connections on these. At least there are usually more connections as bound ports. My case is different: I want to bind a lot of ports and usually have no (or at least very few) connections. So I want to use NIO to accept the incoming connections. However, I need to pass the accepted connections to the existing jsch ssh library. That requires IO sockets instead of NIO sockets, it spawns one (or two) thread(s) per connection. But that's fine for me. Now, I thought that the following lines would deliver the very same result: Socket a = serverSocketChannel.accept().socket(); Socket b = serverSocketChannel.socket().accep(); SocketChannel channel = serverSocketChannel.accpet(); channel.configureBlocking( true ); Socket c = channel.socket(); Socket d = serverSocket.accept(); However the getInputStream() and getOutputStream() functions of the returned sockets seem to work different. Only if the socket was accepted using the last call, jsch can work with it. In the first three cases, it fails (and I am sorry: I don't know why). So is there a way to convert such a socket? Regards, Steffen

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• Interfaces with hibernate annotations

  - by molleman

  Hello i am wondering how i would be able to annotate an interface @Entity @Table(name = "FOLDER_TABLE") public class Folder implements Serializable, Hierarchy { @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name = "folder_id", updatable = false, nullable = false) private int fId; @Column(name = "folder_name") private String folderName; @OneToMany(cascade = CascadeType.ALL) @JoinTable(name = "FOLDER_JOIN_FILE_INFORMATION_TABLE", joinColumns = { @JoinColumn(name = "folder_id") }, inverseJoinColumns = { @JoinColumn(name = "file_information_id") }) private List< Hierarchy > fileInformation = new ArrayList< Hierarchy >(); above and below are 2 classes that implement an interface called Hierarchy, the folder class has a list of Hierarchyies being a folder or a fileinformation class @Entity @Table(name = "FILE_INFORMATION_TABLE") public class FileInformation implements Serializable, Hierarchy { @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name = "file_information_id", updatable = false, nullable = false) private int ieId; @Column (name = "location") private String location; i have serached the web for someway to annotate or a workaround but i cannot map the interface which is simply this public interface Hierarchy { } i get a mapping exeception on the List of hierarchyies with a folder but i dont know how to map the class correctly

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• Call webservice from Android using KSoap simply returning "error" string

  - by w00tfest99

  I'm trying to use ksoap to call a simple webservice. I followed this video to try to get started. When I call "getResponse()" on the envelope I just get the string "Error". There's no exceptions thrown or any other detail. I've successfully connected to a simple webservice I just setup on my local machine. Could this potentially be related to being behind a proxy server here at work? My code is below: String SOAP_ACTION="http://tempuri.org/CelsiusToFahrenheit"; String METHOD_NAME = "CelsiusToFahrenheit"; String NAMESPACE = "http://tempuri.org"; String URL = "http://w3schools.com/webservices/tempconvert.asmx"; SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); PropertyInfo pi = new PropertyInfo(); pi.setName("Celsius"); pi.setValue("32"); request.addProperty(pi); SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); envelope.dotNet = true; envelope.setOutputSoapObject(request); HttpTransportSE aht = new HttpTransportSE(URL); try { aht.call(SOAP_ACTION, envelope); SoapPrimitive results = (SoapPrimitive)envelope.getResponse(); } catch (Exception e) { e.printStackTrace(); }

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• oracle clob insertion problem in spring

  - by haluk

  Hi, I want to insert CLOB value into my Oracle database and here is the what I could do. I got this exception while inserting operation "ORA-01461: can bind a LONG value only for insert into a LONG column". Would someone able to tell me what should I do? Thanks. List<Object> listObjects = dao.selectAll("TABLE NAME", new XRowMapper()); String queryX = "INSERT INTO X (A,B,C,D,E,F) VALUES ?,?,?,?,?,XMLTYPE(?))"; OracleLobHandler lobHandler = new OracleLobHandler(); for(Object myObject : listObjects) { dao.create(queryX, new Object[]{ ((X)myObject).getA(), ((X)myObject).getB(), new SqlLobValue (((X)myObject).getC(), lobHandler), ((X)myObject).getD(), ((X)myObject).getE(), ((X)myObject).getF() }, new int[] {Types.VARCHAR,Types.VARCHAR,Types.CLOB,Types.VARCHAR,Types.VARCHAR,Types.VARCHAR}); }

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• Call stored procedure using Spring SimpleJdbcCall with callback

  - by MFIhsan

  I have an Oracle Stored procedure that takes CLOB input and REFCURSOR output. I invoke the SP via Spring SimpleJdbcCall passing in a RowMapper to map the results. However, since the result set is large, I need to provide callback feature to the client. I can't quite figure out how to add callback for an SP call using Spring - both with and without SimpleJdbcCall. One thought I have is to pass-in a RowCallbackHandler. Will this work or is there a better way to solve this problem? Any help here is appreciated. private Map<String, Object> arguments = ...; SimpleJdbcCall jdbcCall = new SimpleJdbcCall(this.jdbcTemplate) .withCatalogName(this.packageName) .withProcedureName(this.storedProcName) .withoutProcedureColumnMetaDataAccess() .declareParameters(this.outputParameters.toArray(new SqlOutParameter[]{})); if(!isEmpty(inputParameters)) { jdbcCall.declareParameters(inputParameters.toArray(new SqlParameter[]{})); } this.outputParameters.add(new SqlOutParameter(outputParamName, VARCHAR, rowMapper)); jdbcCall.execute(arguments);

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• Maintaing JTextArea scroll position

  - by Sami

  I have a JScrollPane with a JTextArea set as its view port. I update the (multi line) text shown on the JTextArea continously about once a second. Each time the text updates, JScrollPane goes all the way to the bottom of the text. Instead, I'd like to figure out the line number that is currently shown as the first line in the original text, and have that line be the first line shown when the text has been updated (or if the new text doesn't have that many lines, then scroll all the way to the bottom). My first attempt of doing this was to get the current caret position, figure the line based on that, and then set the text area to show that line: int currentPos = textArea.getCaretPosition(); int currentLine = 0; try { for(int i = 0; i < textArea.getLineCount(); i++) { if((currentPos >= textArea.getLineStartOffset(i)) && (currentPos < gameStateTextArea.getLineEndOffset(i))) { currentLine = i; break; } } } catch(Exception e) { } textArea.setText(text); int newLine = Math.min(currentLine, textArea.getLineCount()); int newOffset = 0; try { newOffset = textArea.getLineStartOffset(newLine); } catch(Exception e) { } textArea.setCaretPosition(newOffset); This was almost acceptable for my needs, but requires the user to click inside the text area to change the caret position, so that the scrolling will maintain state (which isn't nice). How would I do this using the (vertical) scroll position instead ?

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• SPRING: What is AOP, Dependency Injection and Inversion Of Control in Simple English

  - by Rachel

  I have tried to understand AOP, Dependency Injection and Inversion of Control SPRING related concepts but I am having hard time understanding it. Can anyone explain this in simple English ?

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• Random text generator

  - by verbatim64x

  What is the best way to generate random a string which is composed of alphabets and its a maximum of 8million characters which will be tested using string searching algorithms? is Math.random still be ok for the randomness or the reliability of the spread of characters based on statistics? any comment is appreciated, right me if im wrong with my ideas.

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• Reflection to access advanced telephony features

  - by Tyler

  I am trying to use reflection to access some advanced features of the telephony api not published. Currently I am having trouble instantiating a serviceManager object that is needed to get the "phone" service as a binder which I can then use to instantiate a telephony object which is needed to make a call, end call, etc... currently when I make the call serviceManagerObject = tempInterfaceMethod.invoke(null, new Object[] { new Binder() }); it returns a nullPointerException. I believe this has to due with creating a new Binder instead of sending the appropriate binder (which I am unsure of which one is appropriate) public void placeReflectedCall() throws ClassNotFoundException, SecurityException, NoSuchMethodException, IllegalArgumentException, IllegalAccessException, InvocationTargetException, InstantiationException { String serviceManagerName = "android.os.IServiceManager"; String serviceManagerNativeName = "android.os.ServiceManagerNative"; String telephonyName = "com.android.internal.telephony.ITelephony"; Class telephonyClass; Class telephonyStubClass; Class serviceManagerClass; Class serviceManagerStubClass; Class serviceManagerNativeClass; Class serviceManagerNativeStubClass; Method telephonyCall; Method telephonyEndCall; Method telephonyAnswerCall; Method getDefault; Method[] temps; Constructor[] serviceManagerConstructor; // Method getService; Object telephonyObject; Object serviceManagerObject; String number = "1111111111"; telephonyClass = Class.forName(telephonyName); telephonyStubClass = telephonyClass.getClasses()[0]; serviceManagerClass = Class.forName(serviceManagerName); serviceManagerNativeClass = Class.forName(serviceManagerNativeName); Method getService = // getDefaults[29]; serviceManagerClass.getMethod("getService", String.class); Method tempInterfaceMethod = serviceManagerNativeClass.getMethod( "asInterface", IBinder.class); // this does not work serviceManagerObject = tempInterfaceMethod.invoke(null, new Object[] { new Binder() }); IBinder retbinder = (IBinder) getService.invoke(serviceManagerObject, "phone"); Method serviceMethod = telephonyStubClass.getMethod("asInterface", IBinder.class); telephonyObject = serviceMethod .invoke(null, new Object[] { retbinder }); telephonyCall = telephonyClass.getMethod("call", String.class); telephonyEndCall = telephonyClass.getMethod("endCall"); telephonyAnswerCall = telephonyClass.getMethod("answerRingingCall"); telephonyCall.invoke(telephonyObject, number); } Thanks in advance for any answers.

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• JVM (embarrasingly) parallel processing libraries/tools

  - by Winterstream

  I am looking for something that will make it easy to run (correctly coded) embarrassingly parallel JVM code on a cluster (so that I can use Clojure + Incanter). I have used Parallel Python in the past to do this. We have a new PBS cluster and our admin will soon set up IPython nodes that use PBS as the backend. Both of these systems make it almost a no-brainer to run certain types of code in a cluster. I made the mistake of using Hadoop in the past (Hadoop is just not suited to the kind of data that I use) - the latency made even small runs execute for 1-2 minutes. Is JPPF or Gridgain better for what I need? Does anyone here have any experience with either? Is there anything else you can recommend?

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