MakePersistent exception and second class object value

1. When makePersistent is called on an object with application id that
already exists in the database, a JDOFatalDataStoreException is thrown.
The JDO specification calls for a JDOUserException (17.1.4).
2. If there are stray data for a second class field (e.g. Hashtable)
before the object is created, the stray data will become part of the value
of the second class object.
Suggestion: Delete statements should be issued to delete stray values for
second class fields.
---------- Program output -------------
After makePersistent: Persistent-Dirty-New
After add inside transaction: Persistent-Dirty-New
[ C:9; S:58; T:5; D:11/29/02 9:47 PM ] INSERT INTO PORTFOLIOX(JDOLOCKX,
JDOCLASSX, NAMEX) VALUES (0, 'quocp.ent.Portfolio', 'TESTPF')
[ C:9; T:5; D:11/29/02 9:47 PM ] roll back data store transaction
javax.jdo.JDOFatalDataStoreException:
com.solarmetric.kodo.impl.jdbc.sql.SQLExceptionWrapper: [SQL=INSERT INTO
PORTFOLIOX(JDOLOCKX, JDOCLASSX, NAMEX) VALUES (0, 'quocp.ent.Portfolio',
'TESTPF')] Invalid argument value: Duplicate entry 'TESTPF' for key 1
[code=1062;state=S1009]
NestedThrowables:
com.solarmetric.kodo.impl.jdbc.sql.SQLExceptionWrapper: [SQL=INSERT INTO
PORTFOLIOX(JDOLOCKX, JDOCLASSX, NAMEX) VALUES (0, 'quocp.ent.Portfolio',
'TESTPF')] Invalid argument value: Duplicate entry 'TESTPF' for key 1
end trans[11/29 21:47:28:913]

Well, you can always do this type of cleanup manually if you so desire.
Having Kodo automatically guess about what constitutes valid data seems
pretty dangerous though.
I'd suggest that you put the appropriate deferred referential integrity
checks on your schema instead. This will let the database guarantee the
consistency of the data.
-Patrick
Quoc Pham wrote:
If the data for the second class member somehow are there in the table
(maybe someone deleted the owning instance without cleaning up the owned
data), then it woul be picked up. It would be safer to have an option to
issue an SQL statement to clean up the data.
"Patrick Linskey" wrote in message
news:asegfu$9r0$[email protected]..
Quoc Pham wrote:
2. If there are stray data for a second class field (e.g. Hashtable)
before the object is created, the stray data will become part of the
value
of the second class object.What do you mean by 'stray data?'
-Patrick
Patrick Linskey [email protected]
SolarMetric Inc. http://www.solarmetric.com
Patrick Linskey [email protected]
SolarMetric Inc. http://www.solarmetric.com

Similar Messages

Created with second class object failure.

Hi All,
When I am trying to import tables from the database, I got the following warning message.
Only for some of the tables I am getting.
The table is importing properly. But I don't know why I am getting this error.
Please anyone can explain.
Thank you,
Regards,
Gowtham Sen.

Hello!
Second class objects are columns, indexes, constraints etc. Probably some of these contains reserved OWB keywords. You can check what went wrong by drilling down to these objects on the results screen.
Regards,
Robert

SECOND CLASS OBJECT FAILURE

When I try to import a table into my target warehouse I get a message saying 'created with second class object failure'.
What is this referring to ??
Thanks in advance
Paul Heath

Paul,
It is possible that a second class object (a table field, for example) is not created correctly. OWB does not support certain data types, so I suggest to check you table structure.
Regards:
Igor

OWB ERROR: created with second class object failure

I'm getting this error when I import a table into the repository. any ideas?
created with second class object failure

Hello!
Second class objects are columns, indexes, constraints etc. Probably some of these contains reserved OWB keywords. You can check what went wrong by drilling down to these objects on the results screen.
Regards,
Robert

Raising Exceptions and Assistance classes

Hi everyone. I know that the WDA framwork will not let me declare a raising clause in the method signature. However, during checks in the component i usually declare some code like this which is not pretty:
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Hi Alexander,
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Checked Exception and Anonymous classes

Hi I am refering to java certification book that says : If a checked exception is thrown during the execution of initializer expression, then it has to be caught and handled. This restriction does not apply to instance initializer expressions in anonymous classes.
I have codes for the above statement but failed to get the correct result. Is there some problem with the code :
class RoomOccupancyTooHighException extends RuntimeException {} // (1) Unchecked Exception
class TooManyHotelsException extends Exception {}           // (2) Checked Exception
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In anonynous class initialisation you don't need to declare the exception but you still need to handle it in the calling code.
The code you provided does not compile for that reason.

What is the advantage of using IB to create XIBs/Class Objects over coding?

Hi all,
I hoping someone can provide me some pros and cons as to when I should use IB to create XIBs and/or class objects as opposed to directly coding them.
For example, if I choose Apple's Template for creating a Navigation Based Application (cocoa touch), the project creates two NIB files - MainMenu and RootViewController.
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as opposed to the template which only needs this:
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You can do whatever you're comfortable with, but most of the best Cocoa programmers--the ones on the Mac, I mean--recommend putting everything you can into Interface Builder.
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Interface Builder takes away a lot of completely meaningless choices ("What order should I create the objects in? How should I name the variables? How should I create their frames? What order should I set the attributes in?"), leaving you with an interface optimized for creating and arranging objects, and allowing your code to focus on what you really do need to think about--your application's logic.
(By the way--part of the reason Apple's demos don't all use Interface Builder is that the very first SDK releases didn't have it. Back then, you had to create all your views programatically. Believe me, I have no wish to go back to setting autoresize masks manually. Now get off my lawn, whippersnapper.)

Exception Description: Unable to process XML tag [driver-class] with value

Hi
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<?xml version="1.0" encoding="UTF-8"?>
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<session xsi:type="database-session">
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<password>F6A3DA7BA187330D4E11A713C42FF833</password>
<sequencing>
<default-sequence xsi:type="table-sequence">
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</sequencing>
<driver-class>oracle.jdbc.OracleDriver</driver-class>
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<struct-converters/>
</login>
</session>
</toplink-sessions>
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import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Vector;
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import oracle.toplink.queryframework.SQLCall;
import oracle.toplink.queryframework.StoredProcedureCall;
import oracle.toplink.sessions.DatabaseSession;
import oracle.toplink.sessions.Session;
import oracle.toplink.tools.sessionconfiguration.XMLSessionConfigLoader;
import oracle.toplink.tools.sessionmanagement.SessionManager;
import oracle.toplink.util.SessionFactory;
public class Application1 {
public Application1() {
public static void main(String[] args) {
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SessionManager sessionmanager = SessionManager.getManager();
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session.executeNonSelectingCall(sqlcall);
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String strLogin = rs.getString(2);
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Exception in thread "main" Local Exception Stack:
Exception [TOPLINK-9003] (Oracle TopLink - 11g Technology Preview 3 (11.1.1.0.0) (Build 071207)): oracle.toplink.exceptions.SessionLoaderException
Exception Description: Unable to process XML tag [driver-class] with value [oracle.jdbc.OracleDriver].
Internal Exception: java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver
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     at oracle.toplink.tools.sessionconfiguration.TopLinkSessionsFactory.buildDatabaseSessionConfig(TopLinkSessionsFactory.java:182)
     at oracle.toplink.tools.sessionconfiguration.TopLinkSessionsFactory.buildSession(TopLinkSessionsFactory.java:168)
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     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
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     at oracle.toplink.tools.sessionconfiguration.TopLinkSessionsFactory.buildDatabaseLoginConfig(TopLinkSessionsFactory.java:405)
     ... 8 more
Process exited with exit code 1.
Can you help me to debug this error. Many thanks
user615555

The internal error: "java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver"
is stating it can't find your driver jar file on the classpath. You'll need to check that you've included your Database driver in the list of libraries on your classpath.
Best Regards,
Chris

Problem in generic value copier class / reflection and generic classes

Hello experts,
I try to archive the following and am struggling for quite some time now. Can someone please give an assessment if this is possible:
I am trying to write a generic data copy method. It searches for all (parameterless) getter methods in the source object that have a corresponding setter method (with same name but prefixed by "set" instead of "get" and with exactly one parameter) in the destination object.
For each pair I found I do the following: If the param of the setter type (T2) is assignable from the return type of the getter (T1), I just assign the value. If the types are not compatible, I want to instantiate a new instance of T2, assign it via the setter, and invoke copyData recursively on the object I get from the getter (as source) and the newly created instance (as destination). The assumption is here, that the occurring source and destination objects are incompatible but have matching getter and setter names and at the leaves of the object tree, the types of the getters and setters are compatible so that the recursion ends.
The core of the problem I am struggling with is the step where I instantiate the new destination object. If T2 is a non-generic type, this is straightforward. However, imagine T1 and T2 are parametrized collections: T1 is List<T3> and T2 is List<T4>. Then I need special handling of the collection. I can easily iterate over the elements of the source List and get the types of the elements, but I can not instantiate only a generic version of the destinatino List. Further I cannot create elements of T4 and add it to the list of T2 and go into recursion, since the information that the inner type of the destination list is T4 is not available at run-time.
public class Source {
   T1 getA();
   setA(T1 x);
public class Dest {
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   setA(T2 x);
public class BeanDataCopier {
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         Class sourceParamT = [class of return value of the getter];
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         // if types are not compatible
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         copyData(sourceParam, destParam);
// usage of the method
Souce s = new Source(); // this is an example, I do not know the type of s at copying time
Dest d = new Dest(); // the same is true for d
// initialize s in a complicated way (actually JAX-B does this)
// copy values of s to d
BeanDataCopier.copyData(s, d);
// now d should have copied values from s Can you provide me with any alternative approaches to implement this "duck typing" behaviour on copying properties?
Best regards,
Patrik
PS: You might have guessed my overall use case: I am sending an object tree over a web service. On the server side, the web service operation has a deeply nested object structure as the return type. On the client side, these resulting object tree has instances not of the original classes, but of client classes generated by axis. The original and generated classes are of different types but have the identically named getter and setter methods (which again have incompatible parameter types that however have consistent names). On the client side, I want to simply create an object of the original class and have the values of the client object (including the whole object tree) copied into it.
Edited by: Patrik_Spiess on Sep 3, 2008 5:09 AM

As I understand your use case this is already supported by Axis with beanMapping [http://ws.apache.org/axis/java/user-guide.html#EncodingYourBeansTheBeanSerializer]
- Roy

Loading and viewing XML when a class object is created..Help Please

Hello,
I have writing a simple class which has a method that gets invoke when the object of the class is created. I am able to view the loaded XML content when I trace it with in my class method, but cannot assign the content to a instance variable using the mutator method. So the process goes like this:
Class object is instantiated
Class construtor then calls the loadXML method which laods the XML
And then assigns the XML to a class instance variable.
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[code]
package com.as3.app
    import flash.display.*;
    import flash.events.*;
    import flash.text.*;
    import flash.net.*;
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// ===========================================================
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// ===========================================================
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// ===========================================================
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                myXML = new XML(e.target.data);
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//=============================================================
                              INSTANTIATING THE CLASS OBJECT
//=============================================================
package com.as3.app
    import flash.display.*;
    import flash.events.*;
    import flash.text.*;
    import flash.net.*;
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[/code

where you have:
            super();
            c = new Cars();
            trace(c.Cars);
c.Cars will not trace as the loaded xml, because it will not have loaded in time. After some time it should presumably have the correct value.
loading operations in actionscript are asynchronous, so your nested function which is acting as the listener ( function processXML(e:Event):void) only ever executes when the raw xml data has loaded and that is (I believe, not 100% sure) always at least one frame subsequent to the current one.
In general I would consider it bad practise to use nested functions like that, but I don't think its contributing to your issues here. I think its just a timing issue given how things work in flash....
Additional observation:
your Cars constructor calls loadCars() and your loadCars method is defined as:
public function loadcars()
I assume its just a typo in the forum that the uppercase is missing in the function name....

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Thank you very much

merit wrote:
Hi,
Subject sounds strange? well, I dont know how to put it. Here is my problem. I have a class ReadURL which reads a url and creates a buffer. He is the code.
Can you please show me, How do I feed the buffer information from the first class to the second class for iteration? I am novice, so please dont go to technical about it.
Thank you very muchGive the second class a reference to the buffer that the first class is filling. Just make sure you don't try to read data before it's written.

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Hii!
Persistent Classes
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How can I make a row of cells containing 3-digit decimals, who's values resulted from calculations within the spreadsheet, appear as durations of minutes and seconds?

Row 6 in this spreadsheet is the result of Row 2/Row 3 as evidenced by the formula listed while Cell Y6 selected. How can I make the values in this row appear as durations of minutes and seconds rather than 3-digit decimals? For example, rather than appearing as 9.84 I would like the value of Cell Y6 to appear as 9:50 or 9min 50sec. (obviously .84x60seconds 50 seconds). I tried changing the cell formats from "number" to "duration," but no change is made. Using the "duration" format does however work if I am manually entering the decimal value into the cell rather than allowing it to result from another caluclation within the spreadsheet. Is there a solution to this within Numbers '09? You can see why I would want the "pace" displayed in minutes and seconds. Thanks in advance!
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Thanks...
..Ashish

Hello Ashish
A business object is a sematic term whereas a class (object) is a technical term.
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Regards
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