Mysql type-safe? how to 'ignoreUpperCase'?

Hi all,
not sure this is the right forum, but I'll give it a try.
I just moved my struts-application to a different server (same configuration of mysql, and phpmyadmin, apache, tomcat)
Problem is that I get an exception on queries like this one
select ... from Debit where...the reason for the exception is because the table's name is 'debit' not 'Debit' (mind the capital D).
Does anyone know how to circumvent this problem without changing the tables name?
thank you!

thanks, this solved the problem:
//edit
sudo gedit /etc/mysql/my.cnf
//add the line:
set-variable = lower_case_table_names=1
//restart
sudo /etc/init.d/mysql restart
solved!

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Axis - Using type safe enumerations as parameters.

I defined the following:
interface A {
foo(E x);
where class E is a type safe enumeration (NOT a Java1.5 enum).
When using java2wsdl | wsdl2java i get:
interface A' {
foo(String x);
And then all the stubs and skeletons are implementing A' so I can't use my A. How can I stop axis from doing this?

Hi,
AFAIK, you can't. I'm not an expert though, so everything below may not be the best solution.
The best way I have found for dealing with enums is to declare them as such in your schema, viz:
      <simpleType name="HoldStatus">
        <annotation>
          <documentation>The status of a hold.</documentation>
        </annotation>
        <restriction base="string">
          <enumeration value="INACTIVE"/>
          <enumeration value="ACTIVE"/>
        </restriction>
      </simpleType>Then, most WSDL->Java tools will do something sensible with this, making their own form of enum. I don't know about Axis, but Weblogic's wsdl2service does this.
Then you still have to map between the generated enum and your one. This is the best solution I'm aware of, though.
As far as running java2wsdl then wsdl2java - I'm not aware of any tools that will do 'round tripping' like this successfully. I'd be keen to hear of some if there are any though :-D
-Tim

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Type safe bean interfaces (Java 5) and JBoss IDE

I've posted this help request already in the appropriate JBoss forum.
But unfortunately still without any response.
Latest JBoss IDE versions support type safe business methods e.g. like
     * only for testing
     * @ejb.interface-method view-type = "both"
     * @ejb.permission role-name = "Default"
    public ArrayList<String> getSomeStrings()
    }But the interface methods will be always generated unsafe like
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Thanks in advance
Torsten

Yep... I think that's what I found. By using public methods in my enum class to map it's string member to the EJB field I was able to effectively use my enum in the EJB. The container does it work with a String but the EJB's clients only deal with a enum field. That's what I originally intended so, thanks for your response.

What does it mean by "Deprecation of MBeanHome and Type-Safe Interfaces" ?

The "Javadoc" for the type safe WebLogic MBean interfaces have this disclaimer;
Deprecation of MBeanHome and Type-Safe Interfaces... This is a type-safe interface for a WebLogic Server MBean, which you can import into your client classes and access through weblogic.management.MBeanHome. As of 9.0, the MBeanHome interface and all type-safe interfaces for WebLogic Server MBeans are deprecated. Instead, client classes that interact with WebLogic Server MBeans should use standard JMX design patterns in which clients use the javax.management.MBeanServerConnection interface to discover MBeans, attributes, and attribute types at runtime.
Link: http://otndnld.oracle.co.jp/document/products/wls/docs100/javadocs_mhome/weblogic/management/configuration/DomainMBean.html
I don't understand what this means;
1) Is all the WebLogic MBean interfaces in the "weblogic.management.configuration.*" deprecated?
2) Is the usage of MBeanTypeService also deprecated. since it requires the an WebLogic MBean interface as input for it's getMBeanInfo method?
3) If the WebLogic MBean interfaces will dispear, wil there be any reliable source for type information about WebLogic MBean since the information returned by MBeanTypeService.getMbeanInfo(), MBeanserver.getMbeanInfo() or WebLogicObjectName.getMbeanInfo() isn't consist in its naming schemes (tries to but..)?

Hi,
While scheduling background job, you can trigger the job based on existing job status as dependency or schedule the job based on the SAP Event.
Dependency Job like first background job completes successfully then second followup job will executed other job will not triggered.
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Ganesh
****Reward points if Helpful*****

Generics simply aren't type-safe?

From http://java.sun.com/j2se/1.5/pdf/generics-tutorial.pdf page 15:
In particular, the language is designed to guarantee that if your entire application has been compiled without unchecked warnings using javac -source 1.5, it is type safe.
However, I can create this:
import java.util.*;
public class TypeUnsafe
     static public <T extends Collection> void workaround(T a, T b)
          a.addAll(b);
     static public void main(String[] args)
          Collection<Integer> a = new ArrayList<Integer>();
          Collection<String> b = new ArrayList<String>();
          b.add("Bwahahaha");
          workaround(a, b);
          System.out.println(a.iterator().next().intValue()); // ClassCastException
}There are no casts or particular trickery involved, and this compiles without warnings using javac -source 1.5. Yet I just added a String to a Collection<Integer>. Despite T being defined as extending a raw type, the usual unchecked warning when calling a method with parameterised arguments on a raw type is not given.
On the positive side, it gives me a handy alternative to the NYI @SuppressWarnings :)
I've searched bug parade and the forums, but haven't come across this particular problem... I've only recently started playing with generics, so perhaps I'm missing some subtlety that explains why people aren't jumping up and down and screaming about this.
Sorry if this has been discussed before, and I'm not yet familiar enough with the terminology to have found it in my searches.

Few thoughts:
- The program kingguppy has presented is an example of program with false sense of security despite using generics - the generic program compiles even without a warning but in the end it throws ClassCastException. I hope that we won't find many generic programs with such characteric. I'd say that the program does not benefit of generics because there is no contract between container and containee as far as parameters of workaround() method are concerned. Actually, as Michael said, it uses raw type (Collection). If possible we should avoid using raw types in generic programs. By the way, do you know that raw types might be deprecated in the future?
- Micheal also sugested that in case when there is a conversion from parameterized type to raw type the compiler should emit a warning. I agree with him. I hope that kingguppy will file a bug report and let us know what "generic gurus" think about it. Funny, if the workaround() method were designed as
static public void notGenerifiedMethod(Collection a, Collection b) {
a.addAll(b);
}the compiler would actually emit an unchecked warning. Perhaps, it's sometimes better not to use generified methods.
- The reason why I presented let's say a possible or different solution to the original problem is because in the end it matters only if we, developers, can produce a workable solution. The bosses don't like to hear that there are bugs... I hope you all know what I mean. Who knows, there might be a reader of this forum who will find it useful.
Your thoughts are welcomed.
Andrej

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In illustrator my rotate tool is bending the image or type. How do I stop that?

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Type-safe enum in CMP EJB field...

Is it possible to use a type-safe enum like this in an EJB CMP field?
I have tried to do that but although the code compiles I get errors.
package dataBeansPkg;
import java.io.Serializable;
import java.io.ObjectStreamException;
import java.util.HashMap;
public final class Estado implements Serializable
private static final String ACTIVODESC = "Activo";
private static final String INACTIVODESC = "Inactivo";
private static final String ELIMINADODESC = "Eliminado";
private static final String BLOQUEADODESC = "Bloqueado";
private static HashMap VALUES = new HashMap();
private final String status;
private final String descripcion;
public static final Estado ACTIVO = new Estado("A", ACTIVODESC);
public static final Estado INACTIVO = new Estado("I", INACTIVODESC);
public static final Estado ELIMINADO = new Estado("E", ELIMINADODESC);
public static final Estado BLOQUEADO = new Estado("B", BLOQUEADODESC);
protected Estado()
this.status = null;
this.descripcion = null;
protected Estado(String estado, String descripcion)
this.status = estado;
this.descripcion = descripcion;
VALUES.put(estado, this);
public String getValor() { return status; }
public String getEstado() { return status; }
public String getDescripcion() { return descripcion; }
public String toString() { return getValor(); }
public final boolean equals(Object o) { return super.equals(o); }
public final int hashCode() { return super.hashCode(); }
public static Estado find(String estado)
if(VALUES.containsKey(estado)) {
return (Estado)VALUES.get(estado);
return null;
public Object readResolve()
Object result = find(status);
if(result != null)
return result;
else
return INACTIVO; // valor por omision
Whenever I run a client using the bean with a field associated to this enum, I get...
java.io.StreamCorruptedException: Caught EOFException while reading the stream header
and
Error loading state: java.io.StreamCorruptedException: Caught EOFException while reading the stream header
Is it possible to use a type-safe enum as a field in an CMP bean?

Yep... I think that's what I found. By using public methods in my enum class to map it's string member to the EJB field I was able to effectively use my enum in the EJB. The container does it work with a String but the EJB's clients only deal with a enum field. That's what I originally intended so, thanks for your response.

I have type-safe generic array copying!

Check this out. I get no warnings from this, and so far it seems to work fine, and it only takes twice the time of a normal array copy.
All you have to do is pass in a dummy array of the same type as your inputArray, which under normal circumstances is very doable. The dummy array does not need to have the same dimension as the input array, which lets you use this as a static method in a utility class without feeling the burning need to make it throw an exception.
It takes advantage of Collections' type-safe toArray() method.
     public static <T> T[] copyArray(T[] inputArray, T[] targetArray)
          return arrayToList(inputArray).toArray(targetArray);
     private static <T> ArrayList<T> arrayToList(T[] inputArray)
          ArrayList<T> returnValue = new ArrayList<T>();
          for(int i = 0; i < inputArray.length; i++)
               returnValue.add(inputArray);
          return returnValue;

And I like my tabs, thank you.Many people consider using tabs in code to be
amatuerish. I can't say I disagree. Tabs are
represented as different lengths depending on the
editor. If you are using Eclipse, you can set it to
insert a number of space when you hit tab instead of
inserting tabs.I like tabs because they are an abstraction of indentation levels, something you don't get with spaces (unless you use one space per level), and therefore it makes more sense to me to use them. I use editors with good tab sizes that are also adjustable. Plus, I just like them better. So there.

Type Safe Collections

Hello All,
I want to have type safe collections. Today. when we do programming with collections it almost behaves like a scripting language with no data types. any thing which is an object goes in and comes out freely.
what about having a Collection(vector, ArrayList) class which can contain objects of only one type.
something like
ArrayList<Integer> a = new ArrayList();
regards,
Abhishek.

Here's my way of using generics in normal Java - not quite as good as a compile error - but it works, and gives you a runtime error on inserting an object of the wrong type.
I did this when at Uni, hence all the funky comments (well, you can't expect the lecturers to actually read the code, can you?).
Just something you may find useful:
import java.util.*;
��An implementation of the Proxy pattern, designed to wrap any list, and make it accept
��objects of the specified type (subclasses are allowed) only, hence allowing a user of
��this class to 'trust' the Proxy list.
public class TypeSafeList extends AbstractList implements Serializable
��protected List source;
��protected Class acceptable;
��/**
��@param list the list to assign.
��@exception java.lang.IllegalArgumentException if the list contains elements of a
��different type to that specified
��*/
��public TypeSafeList(List list,Class acceptable)
��{
��Iterator iterator = list.iterator();
��while( iterator.hasNext() )
��if( !acceptable.isInstance( iterator.next() ) )
��throw new IllegalArgumentException( list+" contains elements not of type "+acceptable);
��this.source=list;
��this.acceptable=acceptable;
��}
��/**
��Passes on the request to the underlying list. See java.util.List.
��*/
��public Object get(int index)
��{
��return source.get(index);
��}
��/**
��Passes on the request to the underlying list. See java.util.List.
��*/
��public int size()
��{
��return source.size();
��}
��/**
��Checks that the type of the parameter is valid, and then passes on the
��request to the underlying list. See java.util.List.
��
��@exception java.lang.IllegalArgumentException if the type of the parameter is
��invalid.
��*/
��public Object set(int index,Object element)
��{
��return source.set(index,checkType(element));
��}
��/**
��Passes on the request to the underlying list. See java.util.List.
��*/
��public Object remove(int index)
��{
��return source.remove(index);
��}
��/**
��Checks that the type of the parameter is valid, and then passes on the
��request to the underlying list. See java.util.List.
��*/��
��public void add(int index,Object object)
��{
��source.add(index,checkType(object));
��}
��/**
��Return the Class object this List is configured to accept.
��*/
��public Class getAcceptable()
��{
��return acceptable;
��}
��
��/**��
��Checks the validity of the parameter against the protected field 'acceptable'.
��@return object if object is valid.
��@exception java.lang.IllegalArgumentException if the argument is invalid.
��*/
��protected Object checkType(Object object) throws IllegalArgumentException
��{
��if (acceptable.isInstance(object))
��return object;
��throw new IllegalArgumentException(object+" needs to be of type "+acceptable.getName());
��}
}

What's "type-safe" ?

when something is type-safe, what does that mean?

http://en.wikipedia.org/wiki/Type_safe
It's amazing what the wide world of web contains.

How do I connect my Centro to the Internet via bluetooth over PC's Internet? Where is Centro's PPP Connection Type? How do I setup Login Script for bluetooth connection?

I am trying to set up bluetooth on the Centro to connect to the internet via my PC's internet.
HotSync over bluetooth works successfully.
Computer specs: Toshiba P205-S6277; Bluetooth Stack v5.10.04 (currently using); Bluetooth Monitor v3.01 (to use Vista's built-in bluetooth)
I think I have narrowed my problem down to 3 things.
(1) Finding Network Access properties (to allow connected devices to access the internet)
(2) Finding Centro's Network Connection Type: PPP
(3) Finding the correct Login Script to use
for (1) I think I've looked everywhere; found nothing on Network Access.
Checked control panel: only Bluetooth Local COM
Right-clicked bluetooth icon > Settings: File transfer, PAN Networking, PAN DHCP server, AV controls. Other bluetooth settings are for file transfer or object push. I don't see anything like this.
I'm stumped on (2). It seems as if palm removed this option under Centro's Advanced network settings .
Nearly all the forums that I read says to choose Connection Type: PPP.
(3) Found 2 scripts that seemed would work. I don't know how it exactly works but it sounds workable.
First script:
Send: CLIENT
Send: CLIENT
Wait for: CLIENTSERVER
End:
Script 1 Connect Log:
=======================================
Connect Log
S: client
S: client
R:
Err: 0x121F <<<netErrUserCancel b/c I canceled it.
Not connected
========================================
I canceled it because the process would stay on "Signing In" then it automatically "Canceled" itself.
Second script:
Send CR:
Delay: 1
Send: CLIENT
Wait For: CLIENTSERVER
End
**UPDATE** I found on this forum (Reply # 3689) that the script is needed only if you are using Palm OS 4 or under. Centro uses Palm OS 5.49121. Can anyone support this?
Even without the script it has problems "Signing In".
I'm currently reading this site and trying out its decribed methods. I will update this thread when I get the results.
I'm using the Centro. And If anyone's been able to successfully connect to the internet on the Centro via a bluetooth connection to the PC WITHOUT 3rd party applications, please share. If not, please share any ideas.
Thanks!
-Eric
Post relates to: Centro (AT&T)
Message Edited by naisanza on 01-01-2009 02:26 PM

I've been going at this for days, and have probably exhausted all the proposed solutions on the first 3 pages of various google searches. I'm getting the feeling that Vista users are pretty much SOL for the time being.
For the record, I just tried out a few of the solutions (mRouter & SoftickPPP) on XP and they work perfectly.
Post relates to: Centro (Verizon)
Message Edited by Cogwheel on 02-13-2009 09:45 AM

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Cauldie,
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Native library NOT thread safe - how to use it via JNI?

Hello,
has anybody ever tried to use a native library from JNI, when the library is not thread safe?
The library (Windows DLL) was up to now used in an MFC App and thus was only used by one user - that meant one thread - at a time.
Now we would like to use the library like a "server": many Java clients connect the same time to the library via JNI. That would mean each client makes its calls to the library in its own thread. Because the library is not thread safe, this would cause problems.
Now we discussed to load the library several times - separately for each client (for each thread).
Is this possible at all? How can we do that?
And do you think we can solve the problem in this way?
Are there other ways to use the library, though it is not thread safe?
Any ideas welcome.
Thanks for any contributions to the discussion, Ina

(1)
has anybody ever tried to use a native library from
JNI, when the library (Windows DLL) is not thread safe?
Now we want many Java clients.
That would mean each client makes its calls
to the library in its own thread. Because the library
is not thread safe, this would cause problems.Right. And therefore you have to encapsulate the DLL behind a properly synchronized interface class.
Now the details of how you have to do that depends: (a) does the DLL contain state information other than TLS? (b) do you know which methods are not thread-safe?
Depending on (a), (b) two extremes are both possible:
One extreme would be to get an instance of the interface to the DLL from a factory method you'll have to write, where the factory method will block until it can give you "the DLL". Every client thread would obtain "the DLL", then use it, then release it. That would make the whole thing a "client-driven" "dedicated" server. If a client forgets to release the DLL, everybody else is going to be locked out. :-(
The other extreme would be just to mirror the DLL methods, and mark the relevant ones as synchronized. That should be doable if (a) is false, and (b) is true.
(2)
Now we discussed to load the library several times -
separately for each client (for each thread).
Is this possible at all? How can we do that?
And do you think we can solve the problem in this
way?The DLL is going to be mapped into the process address space on first usage. More Java threads just means adding more references to the same DLL instance.
That would not result in thread-safe behavior.

Mysql type-safe? how to 'ignoreUpperCase'?

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