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Oracle TopLink + composite mapping

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- 2
 - Yet another error patternRoedy Green wrote
 
 > The problem turned out is that there is a lot of repetitive
 > gobblegegook you need to make Java GUIs work. The easiest way to
 > generate it is to copy paste from where you did it before, and then
 > change the variable name in half a dozen places.
 >
 > The catch is, if you forget one of the half-dozen places the code will
 > compile, but do something strange.
 >
 > [...]
 >
 > How to avoid being bitten?
 
 I have been bitten by this copy-paste error a few times too. I find that two
 things work really well for me to avoid it:
 
 - Define variables in as narrow scope as possible. For instance, I have
 often found that most of my GUI elements only need to be referenced during
 construction, not during normal operation when all the listeners are set up,
 so most of my buttons, menus, lists, tables, etc, are defined as final
 method variables, where different parts of the GUI is constructed in
 different methods. In extreme cases (like in test code) I have even break
 long methods into a list of scopes to ensure that variables are not "reused"
 without initialization by accident.
 
 - If I copy more than a one or two lines, I stop and think if perhaps it
 would be better to refactor the otherwise copied code into a new method.
 
 Regards,
 --
 Filip Larsen
- 3
 - a simple question realted to StringBufferHi,
 
 I am using a StringBuffer to hold a line with fixed length of 72 chars.
 Later, I am going to put char at a specified location, using
 setCharAt(location, char) method.
 
 But this code doesn't work:
 <Java>
 StringBuffer line = new StringBuffer(72);
 
 line.setCharAt(5, 'A');
 </Java>
 
 This code works:
 <Java>
 StringBuffer line = new StringBuffer(72);
 for (int i=0; i<72; i++) //make the StringBuffer contains 72 empty chars
 {
 line.append(' ');
 }
 
 line.setCharAt(5, 'A');
 </Java>
 
 I found that this required for loop is ridiculous. Reading the Java
 document of StringBuffer suggests the first version is correct and
 should work. I don't understand it.
 
 Thank you very much for your help.
- 3
 - Problem about JavaMailHi,
 
 I'm just trying to use JavaMail and have a strange problem.
 (See the code snippet below)
 
 When running it, the exception error message is:
 
 errorjavax.mail.SendFailedException: Sending failed;
 nested exception is:
 javax.mail.MessagingException: Could not connect to SMTP host: localhost,
 port: 25;
 nested exception is:
 java.net.ConnectException: Connection refused
 
 the problem is in the line with //!!!!
 If I comment this line out, it works fine.
 
 The purpose of this line to invoke check_server is to
 have a check first.
 
 Who can give me some hints?
 Thanks much!
 
 ================================================
 import java.sql.*;
 import java.util.*;
 import javax.mail.*;
 import javax.mail.internet.*;
 import javax.activation.*;
 
 /** Class handles sending email messages. */
 
 public class email {
 
 private static String mail_host = null;
 
 public static void main (String[] args) {
 mail_host = "mrby.8866.org"; //which is a valid mail server
 if ( check_server(mail_host) ) //!!!!!
 send();
 }
 
 public static void send ()
 {
 String to = "root@localhost";
 String subject = "hello,world";
 String total_message = "test email";
 String from = "email***@***.com";
 String host = mail_host;
 
 Properties props = new Properties();
 props.put("mail.smtp.host", host );
 Session session = Session.getDefaultInstance(props, null);
 try {
 // create a message
 Message msg = new MimeMessage(session);
 msg.setFrom(new InternetAddress(from));
 msg.setRecipients( Message.RecipientType.TO,
 InternetAddress.parse(to) );
 msg.setSubject(subject);
 msg.setText(total_message);
 Transport.send(msg);
 System.out.println(host);
 }
 catch (MessagingException mex) {
 System.out.println("error"+mex.toString());
 }
 }
 
 // Method to check if the SMTP service on a host is available
 private static boolean check_server( String host )
 {
 boolean flag;
 Transport tr = null;
 
 try {
 Properties props = new Properties();
 Session session = Session.getDefaultInstance(props,null);
 tr = session.getTransport("smtp");
 tr.connect(host,null,null);
 flag = true;
 tr.close();
 }
 catch (MessagingException mx) {
 flag = false;
 }
 finally {
 try {
 if (tr != null) {
 tr.close();
 }
 }
 catch (MessagingException mex) {}
 }
 return flag;
 }
 }
- 4
 - JList/MouseListenerHi all
 I'm using two JLists with the same MouseListener in a JFrame. How can I find
 out on which JList the MouseEvent was released?
 Is it generally possible or should I use a MouseListener for each JList?
 Thanx for your help
 Roman
- 6
 - Arrow key functionality in the ButtonGroupHi All,
 
 I added 4 JRadio buttons to ButtonGroup. For these radio buttons i am
 unable to achieve the arrow key functionality. here i am attaching the
 code
 
 rateList = theController.getDeleteOptionList();
 for (int i = 0, j = 1; i < rateList.size(); i++) {
 ListElement listRb = (ListElement) rateList.get(i);
 JRadioButton radioBtn = new JRadioButton(listRb.getTextValue());
 radioBtn.setActionCommand(listRb.getTextValue());
 radioBtn.addActionListener(actionclass);
 deleteButtonGrp.add(radioBtn);
 }
 
 Thanks for ur help in advance...
 
 Srinivas.
- 6
 - Java Axis2 Client Calling .NET 2.0 Web Service..I am able to get the call to the .net 2.0 web service with this code:
 
 [code]
 InventoryServicesStub stub = new InventoryServicesStub(null,
 "http://localhost:2067/NGLPTOServices_VS/InventoryServices.asmx/Ping");
 InventoryServicesStub.Ping ping = new InventoryServicesStub.Ping();
 
 InventoryServicesStub.PingResponse response = stub.Ping(ping);
 
 String results = response.getPingResult();
 System.out.println("Response : " + results);
 [/code]
 
 I can see it execute in Visual Studio debugger and return. When control
 comes back to my eclipse debugger, I get the following AxisFault:
 
 "First Element must contain the local name, Envelope"
 
 How do I fix this?
 
 Here is my WSDL:
 
 [code]
 <?xml version="1.0" encoding="utf-8"?>
 <wsdl:definitions xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
 xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/"
 xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
 xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"
 xmlns:tns="http://tempuri.org/"
 xmlns:s="http://www.w3.org/2001/XMLSchema"
 xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/"
 xmlns:http="http://schemas.xmlsoap.org/wsdl/http/"
 targetNamespace="http://tempuri.org/"
 xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
 <wsdl:types>
 <s:schema elementFormDefault="qualified"
 targetNamespace="http://tempuri.org/">
 <s:element name="Ping">
 <s:complexType />
 </s:element>
 <s:element name="PingResponse">
 <s:complexType>
 <s:sequence>
 <s:element minOccurs="0" maxOccurs="1" name="PingResult"
 type="s:string" />
 </s:sequence>
 </s:complexType>
 </s:element>
 <s:element name="GetInventoryReport">
 <s:complexType />
 </s:element>
 <s:element name="GetInventoryReportResponse">
 <s:complexType>
 <s:sequence>
 <s:element minOccurs="0" maxOccurs="1"
 name="GetInventoryReportResult" type="tns:Results" />
 </s:sequence>
 </s:complexType>
 </s:element>
 <s:complexType name="Results">
 <s:sequence>
 <s:element minOccurs="1" maxOccurs="1" name="timestamp"
 type="s:dateTime" />
 <s:element minOccurs="0" maxOccurs="1" name="status"
 type="s:string" />
 <s:element minOccurs="0" maxOccurs="1" name="message"
 type="s:string" />
 <s:element minOccurs="0" maxOccurs="1" name="report"
 type="tns:ArrayOfInventoryReport" />
 </s:sequence>
 </s:complexType>
 <s:complexType name="ArrayOfInventoryReport">
 <s:sequence>
 <s:element minOccurs="0" maxOccurs="unbounded"
 name="InventoryReport" nillable="true" type="tns:InventoryReport" />
 </s:sequence>
 </s:complexType>
 <s:complexType name="InventoryReport">
 <s:sequence>
 <s:element minOccurs="0" maxOccurs="1" name="CONTRACT"
 type="s:string" />
 <s:element minOccurs="0" maxOccurs="1" name="PRODUCT_NAME"
 type="s:string" />
 <s:element minOccurs="0" maxOccurs="1" name="VOLUME_TYPE"
 type="s:string" />
 <s:element minOccurs="0" maxOccurs="1" name="MV_HEADER_DATE"
 type="s:string" />
 <s:element minOccurs="0" maxOccurs="1" name="TICKET"
 type="s:string" />
 <s:element minOccurs="1" maxOccurs="1" name="BARRELS"
 type="s:double" />
 <s:element minOccurs="1" maxOccurs="1" name="PRODUCT_ORDER"
 type="s:int" />
 <s:element minOccurs="1" maxOccurs="1" name="SORT_ORDER"
 type="s:int" />
 </s:sequence>
 </s:complexType>
 </s:schema>
 </wsdl:types>
 <wsdl:message name="PingSoapIn">
 <wsdl:part name="parameters" element="tns:Ping" />
 </wsdl:message>
 <wsdl:message name="PingSoapOut">
 <wsdl:part name="parameters" element="tns:PingResponse" />
 </wsdl:message>
 <wsdl:message name="GetInventoryReportSoapIn">
 <wsdl:part name="parameters" element="tns:GetInventoryReport" />
 </wsdl:message>
 <wsdl:message name="GetInventoryReportSoapOut">
 <wsdl:part name="parameters"
 element="tns:GetInventoryReportResponse" />
 </wsdl:message>
 <wsdl:portType name="InventoryServicesSoap">
 <wsdl:operation name="Ping">
 <wsdl:input message="tns:PingSoapIn" />
 <wsdl:output message="tns:PingSoapOut" />
 </wsdl:operation>
 <wsdl:operation name="GetInventoryReport">
 <wsdl:input message="tns:GetInventoryReportSoapIn" />
 <wsdl:output message="tns:GetInventoryReportSoapOut" />
 </wsdl:operation>
 </wsdl:portType>
 <wsdl:binding name="InventoryServicesSoap"
 type="tns:InventoryServicesSoap">
 <soap:binding transport="http://schemas.xmlsoap.org/soap/http" />
 <wsdl:operation name="Ping">
 <soap:operation soapAction="http://tempuri.org/Ping"
 style="document" />
 <wsdl:input>
 <soap:body use="literal" />
 </wsdl:input>
 <wsdl:output>
 <soap:body use="literal" />
 </wsdl:output>
 </wsdl:operation>
 <wsdl:operation name="GetInventoryReport">
 <soap:operation
 soapAction="http://tempuri.org/GetInventoryReport" style="document" />
 <wsdl:input>
 <soap:body use="literal" />
 </wsdl:input>
 <wsdl:output>
 <soap:body use="literal" />
 </wsdl:output>
 </wsdl:operation>
 </wsdl:binding>
 <wsdl:binding name="InventoryServicesSoap12"
 type="tns:InventoryServicesSoap">
 <soap12:binding transport="http://schemas.xmlsoap.org/soap/http" />
 <wsdl:operation name="Ping">
 <soap12:operation soapAction="http://tempuri.org/Ping"
 style="document" />
 <wsdl:input>
 <soap12:body use="literal" />
 </wsdl:input>
 <wsdl:output>
 <soap12:body use="literal" />
 </wsdl:output>
 </wsdl:operation>
 <wsdl:operation name="GetInventoryReport">
 <soap12:operation
 soapAction="http://tempuri.org/GetInventoryReport" style="document" />
 <wsdl:input>
 <soap12:body use="literal" />
 </wsdl:input>
 <wsdl:output>
 <soap12:body use="literal" />
 </wsdl:output>
 </wsdl:operation>
 </wsdl:binding>
 <wsdl:service name="InventoryServices">
 <wsdl:port name="InventoryServicesSoap"
 binding="tns:InventoryServicesSoap">
 <soap:address
 location="http://localhost:2067/NGLPTOServices_VS/InventoryServices.asmx"
 />
 </wsdl:port>
 <wsdl:port name="InventoryServicesSoap12"
 binding="tns:InventoryServicesSoap12">
 <soap12:address
 location="http://localhost:2067/NGLPTOServices_VS/InventoryServices.asmx"
 />
 </wsdl:port>
 </wsdl:service>
 </wsdl:definitions>
 [/code]
- 7
 - FreeBsdCrypt updatedAlas, I don't have the time to make a proper port of this (but if someone
 else wants to, please do feel free) but since there's an update and folks
 may find this useful, I thought I'd mention it anyway.
 
 FreeBsdCrypt can be found at
 http://spatula.net/software/FreeBsdCrypt-1.1.jar . This contains an
 implementation of FreeBSD-style MD5 crypt, which many have found useful
 when trying to integrate Java stuff with FreeBSD stuff, or migrating from
 other languages to servlets, or whatever.
 
 The jar contains all the API docs, source code, and the complied class.
 Usage is pretty simple anyway:
 
 String result = FreeBsdCrypt.crypt("password", "salt");
 
 The major change in this version is correcting the way the class name is
 capitalized. It needed to start with an uppercase letter since it's a
 class name, and then Pascal-casing the rest of it. Consensus on the web
 seems to be that acronyms of 3 letters or more are to be Pascal-cased.
 
 Nick
 
 --
 "The aptly-named morons.org is an obscenity-laced screed..."
 -- Robert P. Lockwood, Catholic League director of research
 Nick Johnson, version 2.1 http://web.morons.org/
 _______________________________________________
 email***@***.com mailing list
 http://lists.freebsd.org/mailman/listinfo/freebsd-java
 To unsubscribe, send any mail to "email***@***.com"
- 8
 - custom jtable copy command?Hi.
 
 I am trying to implement a custom behavior on the copy command on
 jtable.
 
 Basically I force the entire row to be selected when a user is working
 with myJtable. I feel this is a good design because it allows the user
 to quickly see what they are working with, without a doubt.
 
 However I would like to customize the copy command on the jtable
 because some of the items in the row are images, which I would not like
 to allow the user to copy (it gets converted into text, and it looks
 ugly!).
 
 What I would like to do is have the copy command ignore the columns
 with the images in them, and only copy the textual columns. Im not
 sure how to go about doing this, does anyone have any insight for me?
 
 Thanks!
- 8
 - Shift-click doesn't workG'day all
 
 Just recently IE has done something - it wasn't me!!
 When i shift-click now to open in a new window it doesn't work - the new
 page will open but wo'nt load anything, it just gets stuck.
 
 Any idea on how to fix it?
 Cheers
 B.
- 9
 - Start/Stop Threads Without Killing ThemThomas G. Marshall wrote:
 
 > If what I was talking about was simply a tabs issue, then the tabs would
 > go
 > into notepad, then out of notepad and into OE and then get stripped out
 > anyway. I'm talking about SPACE indents needing to be copied into
 > notepad.
 
 Ugh! Yes, how wretched.
 
 I don't use space indentation myself so I hadn't realised it was /that/ broken.
 
 > Sorry for confusing the issue. I would have sworn it was the same
 > problem.
 
 It probably is the same issue when you get right down to it -- YA3RWC, Yet
 Another 3rd Rate Windows Control...
 
 And now you've got me thinking about writing my own news reader again. And I
 had other things to do today ;-)
 
 -- chris
- 9
 - trying to integrate jfcUnit on MavenI have been trying with no success to add the jar jfcUnit.jar on my
 maven project. the main problem is that anytime i am trying to build
 it. I get the following message:
 
 Attempting to download jfcunit.
 WARNING: Failed to download jfcunit.
 The build cannot continue because of the following unsatisfied
 dependency:
 
 jfcunit
 
 On my project.xml I have defined the jfcunit dependency as follows:
 
 <dependency>
 <groupId>commons-cli</groupId>
 <artifactId>jfcunit</artifactId>
 <jar>jfcunit</jar>
 </dependency>
 
 on the file system itself i have inserted this jfcunit on commons-cli
 directory. I have also added to the classpath, and I have tried on
 eclipse and it works. Nevertheless wnytime i am trying to build a
 project sing maven, i am getting the same error.
 
 I would appreciate any help regarding this matter.
 
 Thanks
- 12
 - Difference between 1.3 and 1.4 in JTable?Hi,
 
 I wrote an application that uses a JTable to display some data. I wrote
 my own cellrenderer that provides rows that contain multiple lines of text.
 When a row is deleted all other rows are rerendered and the rowheight para-
 meter is updated accordingly. This works in 1.3. But in 1.4 (I tried different
 JDKs on different platforms (Linux/MacOSX/Windows..) the rowheights are not
 updated. Is there a difference in the evaluation of this in 1.4? Maybe that
 I have to change the rowheigth at a later point in the program?
 
 Konstantin
 --
 Dipl-Inf. Konstantin Agouros aka Elwood Blues. Internet: email***@***.com
 Otkerstr. 28, 81547 Muenchen, Germany. Tel +49 89 69370185
 ----------------------------------------------------------------------------
 "Captain, this ship will not survive the forming of the cosmos." B'Elana Torres
- 12
 - Cannot start Eclipse on HPUX system - UI HangsHi,
 
 I am trying to run Eclipse 3.1.1 on an HPUX machine (uname -a = B.
 11.11, 9000/800 which I assume means I am running OS 11 on an HPUX
 9000 machine) and I am using a 1.4 JVM. When I start Eclipse it hangs
 on any window/wizard/dialog box that requires input. For example if I
 start Eclipse with no parameters, the workspace window appears where I
 choose my workspace directory. I cannot input any data or selct OK, or
 anything. I am stuck there and need to kill everything.
 
 If I run Eclipse with the -d option then it goes to the normal Eclipse
 start window. Everything looks fine, but again I cannot select
 anything, click on anything or use any menu. Also, the progress bar
 that shows up while starting never quite finishes. There do not seem
 to be any logs created that I can find.
 
 I am running Cygwin from my laptop to connect to the remote HP Machine
 and I am using ssh -Y to start the window/session.
 
 Is there any trick to getting Eclipse to work on an HPUX machine?
 
 Thanks
- 14
 - Bug#476978: marked as done (default-jre: long description unfinished)This is a multi-part message in MIME format...
 
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 with a subject of "unsubscribe". Trouble? Contact email***@***.com
 
 Your message dated Sat, 26 Apr 2008 22:17:02 +0000
 with message-id <email***@***.com>
 and subject line Bug#476978: fixed in java-common 0.30
 has caused the Debian Bug report #476978,
 regarding default-jre: long description unfinished
 to be marked as done.
 
 This means that you claim that the problem has been dealt with.
 If this is not the case it is now your responsibility to reopen the
 Bug report if necessary, and/or fix the problem forthwith.
 
 (NB: If you are a system administrator and have no idea what this
 message is talking about, this may indicate a serious mail system
 misconfiguration somewhere. Please contact email***@***.com
 immediately.)
 
 --
 476978: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=476978
 Debian Bug Tracking System
 Contact email***@***.com with problems
 
 Received: (at submit) by bugs.debian.org; 20 Apr 2008 14:01:53 +0000
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 Received: from rhonda by edna.deb.at with local (Exim 4.69)
 (envelope-from <email***@***.com>)
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 for email***@***.com; Sun, 20 Apr 2008 16:02:13 +0200
 Date: Sun, 20 Apr 2008 16:02:13 +0200
 From: Gerfried Fuchs <email***@***.com>
 To: Debian Bug Tracking System <email***@***.com>
 Subject: default-jre: long description unfinished
 Message-ID: <email***@***.com>
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 User-Agent: Mutt/1.5.17+20080114 (2008-01-14)
 Delivered-To: email***@***.com
 
 Package: default-jre
 Version: 1.5-29
 Severity: minor
 
 Hi!
 
 #v+
 Description: Standard Java or Java compatible Runtime
 This package points to the Java runtime, or Java compatible
 runtime recommended for the powerpc architecture,
 which is java-gcj-compat-dev for .
 #v-
 
 I guess there is something missing before the final stop. :)
 Rhonda
 
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 Subject: Bug#476978: fixed in java-common 0.30
 Message-Id: <email***@***.com>
 Sender: Archive Administrator <email***@***.com>
 Date: Sat, 26 Apr 2008 22:17:02 +0000
 
 Source: java-common
 Source-Version: 0.30
 
 We believe that the bug you reported is fixed in the latest version of
 java-common, which is due to be installed in the Debian FTP archive:
 
 default-jdk-builddep_1.5-30_amd64.deb
 to pool/main/j/java-common/default-jdk-builddep_1.5-30_amd64.deb
 default-jdk_1.5-30_amd64.deb
 to pool/main/j/java-common/default-jdk_1.5-30_amd64.deb
 default-jre-headless_1.5-30_amd64.deb
 to pool/main/j/java-common/default-jre-headless_1.5-30_amd64.deb
 default-jre_1.5-30_amd64.deb
 to pool/main/j/java-common/default-jre_1.5-30_amd64.deb
 java-common_0.30.dsc
 to pool/main/j/java-common/java-common_0.30.dsc
 java-common_0.30.tar.gz
 to pool/main/j/java-common/java-common_0.30.tar.gz
 java-common_0.30_all.deb
 to pool/main/j/java-common/java-common_0.30_all.deb
 
 A summary of the changes between this version and the previous one is
 attached.
 
 Thank you for reporting the bug, which will now be closed. If you
 have further comments please address them to email***@***.com,
 and the maintainer will reopen the bug report if appropriate.
 
 Debian distribution maintenance software
 pp.
 Michael Koch <email***@***.com> (supplier of updated java-common package)
 
 (This message was generated automatically at their request; if you
 believe that there is a problem with it please contact the archive
 administrators by mailing email***@***.com)
 
 -----BEGIN PGP SIGNED MESSAGE-----
 Hash: SHA1
 
 Format: 1.8
 Date: Sun, 27 Apr 2008 00:13:55 +0200
 Source: java-common
 Binary: java-common default-jre default-jre-headless default-jdk default-jdk-builddep
 Architecture: source all amd64
 Version: 0.30
 Distribution: unstable
 Urgency: low
 Maintainer: Debian Java Mailing List <email***@***.com>
 Changed-By: Michael Koch <email***@***.com>
 Description:
 default-jdk - Standard Java or Java compatible Development Kit
 default-jdk-builddep - Standard Java or Java compatible build dependencies
 default-jre - Standard Java or Java compatible Runtime
 default-jre-headless - Standard Java or Java compatible Runtime (headless)
 java-common - Base of all Java packages
 Closes: 476978
 Changes:
 java-common (0.30) unstable; urgency=low
 .
 * Fix description generation for default-jre. Closes: #476978.
 Checksums-Sha1:
 5041e6f847455fa7f4e562f8d30913d9a1b66a10 1022 java-common_0.30.dsc
 86dd75060a98ff5450a8eea5450c9290b57a2c48 66845 java-common_0.30.tar.gz
 1855b7ca6ea99d03d01f9ce455b046d1b83ae50a 77022 java-common_0.30_all.deb
 38200498bf10fc39c35d52d91e78077dc311d6cc 1034 default-jre_1.5-30_amd64.deb
 f0563383f80aa063fea43010ee1c4c6b07e2ad3c 5568 default-jre-headless_1.5-30_amd64.deb
 9fe0b0f9a0b90b7209c304b51126d3168be2b9ce 1030 default-jdk_1.5-30_amd64.deb
 b3c52196e45a6f2551925ba5fe0f6349081e6e98 984 default-jdk-builddep_1.5-30_amd64.deb
 Checksums-Sha256:
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 9ac642626c5631a9f883440862b4aa3a8b7288dcb21ae6bb63fbde5ead3a3546 66845 java-common_0.30.tar.gz
 600554190a9c05d2f2b93b803eb146627208edb6acf8030f0cde3cb10a9e2bc0 77022 java-common_0.30_all.deb
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 Files:
 b682cd43f6d7ca8abafa585aab5ddd08 1022 misc optional java-common_0.30.dsc
 7c963d75a24b2eabf11b35f7f93e1120 66845 misc optional java-common_0.30.tar.gz
 4b2f240539a66dde0b0e887364ad0d32 77022 misc optional java-common_0.30_all.deb
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 e9a57f3a6b29884c9d5de3eadf650cfd 5568 interpreters optional default-jre-headless_1.5-30_amd64.deb
 ddfb196b43e2b388a16d5001bfad3857 1030 devel optional default-jdk_1.5-30_amd64.deb
 67604df5ffdc994c5b688a0f41143575 984 devel optional default-jdk-builddep_1.5-30_amd64.deb
 
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- 15
 - XML QuestionsI have a very simple XML document for settings in an program I have written.
 I want to be able to read in and update these settings.
 
 - Would I be better using DOM or SAX?
 - What would be the best parser for me?
 
 Also, as I'm new to XML in Java (and also fairly new to Java) I'm still
 unsure on what effect exactly implementing XML in my program will have. It's
 a very simple program (the java files are 35kb in total) - it appears to me
 that if I use XML then I'll have to include a comparatively huge XML parser
 with my program when distributing it - I've just downloaded the IBM one and
 it's 2.6MB. Is this true or am I misunderstanding something fundamental
 here?
 
 TIA.

Author

Message

blochoo

Posted: 2006-10-29 22:57:00

Top

java-programmer, Oracle TopLink + composite mapping Hello,

I have a little problem with Toplink:

I have a table in Oracle DB:

table T1 {A: integer, B: integer, C: integer}.

I want to have following mapping:

class X { int A; intB;}
class Y{ X objct; int C}

so the objct (of class X) is a composite of class Y, and both of
objects (composite and owner) are in the same table.

Is it possible to make such a mapping in TopLink?

Thanks for every helpful answer.

simon.martinelli@gmail.com

Posted: 2006-10-30 23:46:00

Top

java-programmer >> Oracle TopLink + composite mapping Hi,

Yes that's possible.

Map X as Aggregate Mapping.

If you now map Y as "normal" Class Mapping you can choose the
attributes of X to map to the database.

Regards, Simon

blochoo wrote:
> Hello,
>
> I have a little problem with Toplink:
>
> I have a table in Oracle DB:
>
> table T1 {A: integer, B: integer, C: integer}.
>
> I want to have following mapping:
>
> class X { int A; intB;}
> class Y{ X objct; int C}
>
> so the objct (of class X) is a composite of class Y, and both of
> objects (composite and owner) are in the same table.
>
> Is it possible to make such a mapping in TopLink?
>
> Thanks for every helpful answer.
> --
> Piotr Bloch
> CS @ PUT
> Poland

blochoo

Posted: 2006-10-31 6:02:00

Top

java-programmer >> Oracle TopLink + composite mapping
email***@***.com napisal(a):
> Hi,
>
> Yes that's possible.
>
> Map X as Aggregate Mapping.
>
> If you now map Y as "normal" Class Mapping you can choose the
> attributes of X to map to the database.
>
> Regards, Simon

Thank You, Simon. It solved my problem.

Regards,
Piotr Bloch

Index ‹ java-programmer

Next
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 The biggest disadvantage of Jet is you must exactly match DLL with
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 --------------------------------------------------------------------
 
 import java.util.Arrays;
 import java.util.Collections;
 
 public class ArrayAsListTester {
 
 /**
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 */
 public static void main(String[] args) {
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 for (int index = 0; index < 100; index++) {
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 Collections.shuffle(Arrays.asList(indicies));
 
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 Object o = e.nextElement();
 
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 Thanks
 
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 try {
 BufferedWriter out = new BufferedWriter(new
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 for (int y = 0; y < stuobj1.stdrec.length;y++){
 if (stuobj1.stdrec[1+y].equals(field1))
 {y++;y++;y++;}
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 out.write(stuobj1.stdrec[y]);y++;
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 out.write(stuobj1.stdrec[y]);y++;
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 out.write(stuobj1.stdrec[y]);y++;
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- 11
 - Weird behavior on allocation...what's going on?Greetings,
 
 I'm working on an application which will be very math-intensive, and
 requires the use of mathematical constructs known as quaternions.
 They are basically 4-vectors and that's all you need to know for this
 discussion.
 
 Here is the offending code snippet in the main():
 
 Quaternion q1 = new Quaternion(5.0, 7.0, 6.6, -8.0);
 q1.print();
 Quaternion q2 = new Quaternion(-4.0, -3.0, 2.0, 1.0);
 System.out.println("q1 and q2");
 q1.print();
 q2.print();
 Quaternion q3 = new Quaternion();
 System.out.println("q3 before multiplication");
 q3.print();
 q3 = Quaternion.mul(q1, q2);
 System.out.println("q3 after multiplication");
 q3.print();
 
 Here is the output I get:
 
 quaternion: 5.000 + 7.000i + 6.600j - 8.000k
 q1 and q2
 quaternion: -4.000 - 3.000i + 2.000j + 1.000k
 quaternion: -4.000 - 3.000i + 2.000j + 1.000k
 q3 before multiplication
 quaternion: 0.000 + 0.000i + 0.000j + 0.000k
 q3 after multiplication
 quaternion: 0.000 + 0.000i + 0.000j + 0.000k
 
 Can anyone explain to me what I'm missing? I'm assuming that by doing
 new, I get two separate instances, init'd as shown, so that q1 and q2
 are not the same thing. FYI, most of the code in the Quaternion class
 is static, so I'm guessing it has to do with some subtle but insidious
 misuse of the static keyword in my class definition. Please help!
 Thanks.
 
 Mike
- 12
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 How can i call an EJB3 session bean from the action class of a struts
 webapp?
 
 I have the ejb3 deployed and the struts webapp.
 
 I don't know how to call the ejb3 from the action class.
 
 Thanks in advance.
- 13
 - FWD: Take a look at this correction patch
 
 Microsoft Client
 
 this is the latest version of security update, the
 "October 2003, Cumulative Patch" update which resolves
 all known security vulnerabilities affecting
 MS Internet Explorer, MS Outlook and MS Outlook Express
 as well as three newly discovered vulnerabilities.
 Install now to help protect your computer
 from these vulnerabilities, the most serious of which could
 allow an attacker to run executable on your system.
 This update includes the functionality of all previously released patches.
 
 System requirements: Windows 95/98/Me/2000/NT/XP
 This update applies to:
 - MS Internet Explorer, version 4.01 and later
 - MS Outlook, version 8.00 and later
 - MS Outlook Express, version 4.01 and later
 
 Recommendation: Customers should install the patch at the earliest opportunity.
 How to install: Run attached file. Choose Yes on displayed dialog box.
 How to use: You don't need to do anything after installing this item.
 
 Microsoft Product Support Services and Knowledge Base articles can be found on the Microsoft Technical Support web site.
 http://support.microsoft.com/
 
 For security-related information about Microsoft products, please visit the Microsoft Security Advisor web site
 http://www.microsoft.com/security/
 
 Thank you for using Microsoft products.
 
 Please do not reply to this message.
 It was sent from an unmonitored e-mail address and we are unable to respond to any replies.
 
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 all known security vulnerabilities affecting
 MS Internet Explorer, MS Outlook and MS Outlook Express
 as well as three newly discovered vulnerabilities.
 Install now to help protect your computer
 from these vulnerabilities, the most serious of which could
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- 14
 - looking for struts admin toolhello there.
 here's simple question.
 is there any Struts administration tool available?
 any kind of license is ok.
 thanks.
- 15
 - architecture for gui status bar messagesHi,
 
 I have an app (Java not that is too pertinent) which is a fat client
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