Driver Objects?

Are there objects in Java that are USB, serial, and parrallel port controllers?
Thanks

There's the JavaComm API for parallel and serial ports.
There's the JUSB project over at SourceForge. And the upcoming(?) JSR-80 might mean support for USB devices might appear in the JRE in the future.

Similar Messages

Unable to create a Driver object from driver with Media type string CTC PHO

Hi All,
I am trying to develop a siebel cti adapter for avaya.
I have loaded a custom dll into siebel server but it is throwing error "SBL-CSR-00500: Unable to create a Driver object from driver C:\Mydriver\cti.dll with Media-Type-String CTC Phone ".
It has been long time without any progress.
Please help
Thanks
Nishant

Hi tomhowell,
According to your description, my understanding is that you got an error when you created a site from a custom site template after migrading SharePoint 2010 to your server.
Did you have the original solution file of the site template? Please re-deploy the solution to your SharePoint site, then create a site from the new site template, compare the result.
Also use SPDisposeCheck to indentify the memory leak:
http://archive.msdn.microsoft.com/SPDisposeCheck
http://www.fewlines4biju.com/2012/11/detected-use-of-sprequest-for.html
Here are some similar posts for your reference:
http://social.msdn.microsoft.com/Forums/sharepoint/en-US/3a25eb86-8415-4053-b319-9dd84a1fd71f/detected-use-of-sprequest-for-previously-closed-spweb-object-please-close-spweb-objects-when-you?forum=sharepointdevelopmentprevious
http://social.msdn.microsoft.com/Forums/en-US/50ce964f-94a6-4fda-abc0-caa34e7111f1/error-detected-use-of-sprequest-for-previously-closed-spweb-object-occurs-when-new-site-gallery
I hope this helps.
Thanks,
Wendy
Wendy Li
TechNet Community Support

[Sybase JDBC Driver]Object has been closed

Hi,
I am getting the following error when accessing a datasource in an EJB on Weblogic using the Data Direct Drivers.
java.sql.SQLException: [DataDirect][Sybase JDBC Driver]Object has been closed.
The code works every other time. the first time through it works the second time I get the error.
Any insite would be appricated.
Here is my code
public String test(String id)
System.out.println ("test1");
DataSource ds = null;
Connection conn = null;
PreparedStatement stmt = null;
PreparedStatement stmt2 = null;
String ret = "?????";
try
System.out.println ("read data - prepare");
InitialContext ic = new InitialContext();
ds = (DataSource)ic.lookup("java:comp/env/jdbc/dataconn");
conn = ds.getConnection();
String sql = "SELECT * FROM myTable WHERE ID = ?";
System.out.println ("read data - conn.prepareStatement(sql);");
stmt = conn.prepareStatement(sql);
stmt.setString(1, id);
// stmt.setMaxRows(1000);
System.out.println ("read data - stmt.executeQuery();");
ResultSet rs = stmt.executeQuery();
System.out.println ("read data - read");
if(!rs.next())
ret = "Not found";
else
ret = "found";
sql = "UPDATE myTable SET column1 = column1 + 1 WHERE ID = ?";
System.out.println ("update data - prepare");
stmt2 = conn.prepareStatement(sql);
stmt2.setString(1, id);
ret = ret + stmt2.executeUpdate();
System.out.println ("update data - update");
catch(Exception e)
e.printStackTrace();
finally
try
stmt.close();
catch(Exception exception1) { }
try
stmt2.close();
catch(Exception exception1) { }
try
conn.close();
catch(Exception exception1) { }
stmt = null;
stmt2 = null;
conn = null;
return ret;
}

Hi. What version of weblogic, and can you print the whole stacktrace?
That way I'll know which object is already closed. This hints at an
already-fixed bug, but I'm not sure yet... And tell me what happens
if you close your result set after you do your call to next(). Lastly,
you can save some DBMS traffic if you change the query to:
"SELECT 1 FROM myTable WHERE ID = ?"
Then regardless of how wide the table is, and whether the table data
is in DBMS memory, as long as there's an index on ID, the query only
needs to use the index, not the data page to answer. If there's an
index entry for your ID value, you'll get one row with 1 in it, else
nothing.
thanks
Joe
Scot McReynolds wrote:
Hi,
I am getting the following error when accessing a datasource in an EJB on Weblogic using the Data Direct Drivers.
java.sql.SQLException: [DataDirect][Sybase JDBC Driver]Object has been closed.
The code works every other time. the first time through it works the second time I get the error.
Any insite would be appricated.
Here is my code
public String test(String id)
System.out.println ("test1");
DataSource ds = null;
Connection conn = null;
PreparedStatement stmt = null;
PreparedStatement stmt2 = null;
String ret = "?????";
try
System.out.println ("read data - prepare");
InitialContext ic = new InitialContext();
ds = (DataSource)ic.lookup("java:comp/env/jdbc/dataconn");
conn = ds.getConnection();
String sql = "SELECT * FROM myTable WHERE ID = ?";
System.out.println ("read data - conn.prepareStatement(sql);");
stmt = conn.prepareStatement(sql);
stmt.setString(1, id);
// stmt.setMaxRows(1000);
System.out.println ("read data - stmt.executeQuery();");
ResultSet rs = stmt.executeQuery();
System.out.println ("read data - read");
if(!rs.next())
ret = "Not found";
else
ret = "found";
sql = "UPDATE myTable SET column1 = column1 + 1 WHERE ID = ?";
System.out.println ("update data - prepare");
stmt2 = conn.prepareStatement(sql);
stmt2.setString(1, id);
ret = ret + stmt2.executeUpdate();
System.out.println ("update data - update");
catch(Exception e)
e.printStackTrace();
finally
try
stmt.close();
catch(Exception exception1) { }
try
stmt2.close();
catch(Exception exception1) { }
try
conn.close();
catch(Exception exception1) { }
stmt = null;
stmt2 = null;
conn = null;
return ret;

8.1.7 jdbc driver: object types with double quotes

Hi all,
While switching from 8.1.6 to 8.1.7 I have trouble with the jdbc driver. It doesn't work
as before: The function CallableStatement.registerOutParameter (and probably some other) doesn't take object type
names in double quotes anymore. A test program is appended to this message. Using a 8.1.6 jdbc driver this program works fine but with a 8.1.7 jdbc driver it throws an exception.
My questions are: Is this bug already filed?
Is a bugfix already available somewhere?
Thanks in advance for any information
Joerg
import java.sql.*;
* create type "test_t" as object (atrb number(10));
* create table "test" of "test_t" (atrb not null) oidindex();
class test
public static void main (String args [])
throws SQLException
String s = "begin insert into \"test\" t values (1)" +
" returning ref(t) into ?; end;";
try{
DriverManager.registerDriver(new
oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection
("jdbc:oracle:thin:@host:1521:orcl","joerg", "password");
CallableStatement cs = conn.prepareCall( s );
cs.registerOutParameter(1, Types.REF, "\"test_t\"");
cs.execute();
System.out.println("Statement returned:");
System.out.println( cs.getObject(1) );
cs.close();
conn.commit();
conn.close();
catch(SQLException e){
System.out.println("SQLException was thrown...");
System.out.println(e.getMessage());
}

I believe that typenames are always treated as case sensitive (unless they are all uppercased).
In your example you should write:
cs.registerOutParameter(1, Types.REF, "test_t");
If you had declared the type test_t in a case insensitive way (without "..."), then you'd have to write:
cs.registerOutParameter(1, Types.REF, "TEST_T");
If you have a schema-qualified name, use a ".":
cs.registerOutParameter(1, Types.REF, "SCOTT.test_t");
However, this behavior implies that you cannot use "." inside of quoted identifier names.

Ethernet driver objects

I am getting a unexpected data response length:68 bytes vs 2 bytes when lookout tries to poll. I am useing 4.51 and ethernet driver with a slc505. I have configured the driver as 5/04. I have another process running just like this and it works fine.
thanks for any advice.

If you need drivers, please follow these steps:
1. In the Run box type devmgmt.msc.
2. Unknown devices would be listed as such and marked out with a yellow question mark.
3. Select the unknown device or other device for which you need drivers and right click to access Properties.
4. In the Properties window click on Details tab and select Device Instance Id or Hardware ID from the drop down.
5. An alphanumeric string like this PCI\VEN_1217&DEV_7130&SUBSYS_012F1025&REV_01\4&6B16D5B&0&33F0 is the identification marker for the device.
6. Please provide this number so that we can suggest the appropriate driver.
I am an HP employee.
Regards,
Vidya
Make it easier for other people to find solutions, by marking my answer “Accept as Solution” if it solves your problem.
***Click on "Thumbs up" button to the bottom right side of my post to say thanks!***

Genesys CTI Driver-Unable to create Driver for GplusVoice

I have a 8.0.0.4 and Genesys 7.5 integration. We are receiving the following error messages in our CommSessionMgr and Scomm Logs when we attempt to make a connection from Siebel to the Genesys CTI Server. There are no firewall ports blocking any traffic between Siebel and Genesys and then are on the same subnet and VLAN. Also, we can establish a basic connection to the Genesys T-Server without Siebel in place. We think that it may be a configuration issue somewhere but we are not sure where to look. I was just wondering if anyone on this board had any basic ideas to troubleshoot this issue besides looking through the log files and the Comm Drivers and Profiles section etc.
Thanks for anyone’s help on this matter!!!
CommSessionMgrLog:
ServerLog LstnObjPrivCreate 3 0004fd49499b1400:0 2009-02-19 10:31:31 Created port 49192 for Communications Session Manager
ObjMgrLog Error 1 00000b92499c1228:0 2009-02-19 11:10:38 (mediamgr.cpp (497)) SBL-CSR-00500: Unable to create a Driver
SCommLog:
SComm[02/20/2009 09:36:45:615]:ERROR:Error on invoke media manager method(StartAllDriver), input args={
DriverProfileInfoArray = 2#2385#9#5#Voice5#Voice11#Gplus voice7#1-5I5JR15#VATaxCallCenter14#GenCommDrv.dll11#GenComm.GIF2289#2#1722#66#26#Service:UsePendingWorkmode22#Service:OCSCancelScope27#Service:KwPiProtocolVersion17#Driver:ServerPort20#Driver:RemoteTimeout18#Driver:LibraryNa .... (message is too long) ...
LanguageCode = ENU
}, error=7537140), msg='Unable to create a Driver object from driver GenCommDrv.dll with Media-Type-String Gplus voice(SBL-CSR-00500)'
SComm[02/20/2009 09:36:45:615]:ERROR:Failed to invoke method(StartAllDriver) at media manager, detail error = Unable to create a Driver object from driver GenCommDrv.dll with Media-Type-String Gplus voice(SBL-CSR-00500)
RSCHELLE_25165941[02/20/2009 09:36:45:615]:ERROR:Communication Agent failed on prcoessing request(StartAllDriver0, input-args={
DriverProfileInfoArray = 2#2385#9#5#Voice5#Voice11#Gplus voice7#1-5I5JR15#VATaxCallCenter14#GenCommDrv.dll11#GenComm.GIF2289#2#1722#66#26#Service:UsePendingWorkmode22#Service:OCSCancelScope27#Service:KwPiProtocolVersion17#Driver:ServerPort20#Driver:RemoteTimeout18#Driver:LibraryNa .... (message is too long) ...
LanguageCode = ENU
}, errcode(7537140), errmsg(Unable to create a Driver object from driver GenCommDrv.dll with Media-Type-String Gplus voice(SBL-CSR-00500))
RSCHELLE_25165941[02/20/2009 09:36:45:615]:ERROR:Failed on invoking ClientConnect in Comm. Server Svc., err=7537140, msg=Unable to create a Driver object from driver GenCommDrv.dll with Media-Type-String Gplus voice(SBL-CSR-00500), input= ClientHost = NG00060492
ClientIP = 10.172.20.128
Simulate = 0
SiebelMobileClient = 0

Figured it out on my own

Can't seem to get sort-object working in powershell widget

I'm experiencing a bit of exasperation with the powershell widget in SCOM 2012 - go easy on me though, this is my first time posting and I'm a bit of a newbie with powershell.
Because of the issues with the logical disk space performance widget and multiple disks (if you have 3 disks attached you get 9 results back) I've been trying to adapt a script somebody else wrote (http://blogs.technet.com/b/lukaszr/archive/2014/06/18/how-to-get-nice-logical-disk-state-view-using-powershell-grid-widget.aspx)
as I want something slightly different.
My objective is to list the 10 servers with lowest free GB space. The script I've been trying to adapt just lists all disks on all servers.
Here is my modified version of the script
$disklist = @()
$disks = Get-SCOMClass -Name "Microsoft.Windows.Server.LogicalDisk" | Get-SCOMClassInstance
foreach ($disk in $disks)
$query = GET-WMIOBJECT –query "SELECT * from win32_logicaldisk where DeviceID = '$disk'" -ComputerName $disk.Path | Select-Object Size, FreeSpace
$size = $query.Size
$free = $query.FreeSpace
$percent = $free / $size
$pervalue = "{0:P0}" -f $percent
$sizeGB = "{0:N1}" -f ($size / 1024 / 1024 / 1024)
$freeGB = "{0:N1}" -f ($free / 1024 / 1024 / 1024)
$diskobject = $ScriptContext.CreateFromObject($disk, "Id=Id", $null)
$diskobject["Server"] = $disk.Path
$diskobject["Drive"] = $disk.Displayname
$diskobject["FreeG"] = $freeGB
$diskobject["FreeP"] = $pervalue
$diskobject["FreeTotal"] = ($freeGB + " / " + $sizeGB)
$disklist += $diskobject
$GBdisklist = $disklist | Sort-Object -Property {[float]($_.FreeG)} | select -first 10
foreach($thing in $GBdisklist) {
$ScriptContext.ReturnCollection.Add($thing)
My thinking was to put all the info into one big collection, then sort that by free disk space and select the top 10, then pipe those back into the scriptcontext collection for displaying. It's slightly unwieldy, granted, but works fine in standard powershell
(after changing the scriptcontext bits), just not the widget!
It all seems to work, and brings back data, except the data that comes back has clearly not been sorted before having the top 10 selected. It's as if the sort command is completely ignored. I've tried quite a few variations on the script sort/sort-object
with or without -property in desperation as I seem to be so close, but yet so far.
Any help would be appreciated!
Pete.
Incidentally, this is the script that works perfectly in standard powershell:
$disklist = @()
$disks = Get-SCOMClass -Name "Microsoft.Windows.Server.LogicalDisk" | Get-SCOMClassInstance
foreach ($disk in $disks)
$query = GET-WMIOBJECT –query "SELECT * from win32_logicaldisk where DeviceID = '$disk'" -ComputerName $disk.Path | Select-Object Size, FreeSpace
$size = $query.Size
$free = $query.FreeSpace
$percent = $free / $size
$pervalue = "{0:P0}" -f $percent
$sizeGB = "{0:N1}" -f ($size / 1024 / 1024 / 1024)
$freeGB = "{0:N1}" -f ($free / 1024 / 1024 / 1024)
$diskobject = New-Object System.Object
$diskobject | Add-Member -MemberType NoteProperty -Name "Id" -Value $disk.ID
$diskobject | Add-Member -MemberType NoteProperty -Name "Server" -Value $disk.Path
$diskobject | Add-Member -MemberType NoteProperty -Name "Drive" -Value $disk.Displayname
$diskobject | Add-Member -MemberType NoteProperty -Name "FreeP" -Value "$pervalue"
$diskobject | Add-Member -MemberType NoteProperty -Name "FreeG" -Value $freeGB
$diskobject | Add-Member -MemberType NoteProperty -Name "FreeTotal" -Value ($freeGB + " / " + $sizeGB)
$disklist += $diskobject
$GBdisklist = $disklist | Sort-Object -Property {[float]($_.FreeG)} | select -first 10
$GBdisklist | ft

After hacking the code around massively I've managed to solve the issue with it and made it a lot neater in the process. Still unsure what the issue was, but I think it helps to sort the output of the diskinfo first before starting with any of the info processing
/ scriptcontext adding
$disklist = @()
$rawdisks = Get-SCOMClass -Name "Microsoft.Windows.Server.LogicalDisk" | Get-SCOMClassInstance
foreach ($disk in $rawdisks)
$diskdetails = GET-WMIOBJECT –query "SELECT * from win32_logicaldisk where DeviceID = '$disk'" -ComputerName $disk.Path | Select-Object PSComputerName, DeviceID, FreeSpace, Size
$disklist += $diskdetails
$top10disks = $disklist | Sort-Object -Property FreeSpace | select -first 10
foreach ($object in $top10disks) {
$size = $object.Size
$free = $object.FreeSpace
$percent = $free / $size
$pervalue = "{0:P0}" -f $percent
$sizeGB = "{0:N1}" -f ($size / 1024 / 1024 / 1024)
$freeGB = "{0:N1}" -f ($free / 1024 / 1024 / 1024)
$dataObject = $ScriptContext.CreateInstance("xsd://foo!bar/baz")
$dataObject["Id"] = (($object.PSComputerName).ToString() + ($object.DeviceID).ToString())
$dataObject["Server"] = ($object.PSComputerName).ToString()
$dataObject["Drive"] = $object.DeviceID
#$dataObject["Free GB"] = ($freeGB).ToString("0000.00")
$dataObject["Free GB"] = ($freeGB).ToString()
$dataObject["FreeTotal"] = (($freeGB).ToString() + " / " + ($sizeGB).ToString())
$ScriptContext.ReturnCollection.Add($dataObject)

IOCTL's from a static library linked to KMDF driver

Hi,
Im trying to build a static library that can be used across multiple KMDF drivers. The library needs to send IOCTL's to another driver to access required functionality.
The library does not have access to the Wdf device object/objects of the KMDF drivers it is being linked to.
To send IOCTLs from the library, i thought i would use WdfIoTragetCreate/open and then use WdfIoTargetSendIoctlSynchronously. However, to create the IO target, i require a device object.
I thought i could call WdfGetDriver to get the driver object and create a dummy device object with no callbacks. However, all the examples and documentation seems to indicate that you only call WdfDeviceCreate inside EvtDeviceAdd or EvtChildListCreateDevice callback,
or from a call to WdfPdoInitAllocate.
Is it incorrect to call WdfDeviceCreate from a library which will be used way after the KMDF driver has come up ?
What options do i have to be able to send IOCTL's to other drivers from this static library?
-R___K

You need to pass in the actual device object, one of the many things that WDF does for you is cleanup things like reference counts etc, so you don't want to be using a dummy device object, since you will be entering the area of having to worry about when
to clean it up.
Since it is a static library you can use WDF calls unlike a DLL.
Don Burn Windows Filesystem and Driver Consulting Website: http://www.windrvr.com

Objects in OWB

The OWB documentation tells you how to 'drive' objects - but is not clarify when to use them - or give examples of how to use
So, can anybody tell me
Why and when would I use:
- a Mapping Input Parameter
- a Mapping Output Parameter
- an External Process object
- a Mapping Sequence
- A Pre Mapping Process and Post Mapping Process
and finally
- a Key Lookup
Sorry if it is long question....
Much obliged
Chris McGill

Hi,
- a Mapping Input Parameter A mapping becomes a PL/SQL package, and mapping input parameters become part of the signature of the MAIN procedure in this package. So if you want to feed information into the package you add a mapping Input parameter to the mapping. This then allows you to funnel information from the outside world into the pl/sql.
- a Mapping Output Parameter This is a similar thing as the input paramter, however this becomes an OUT parameter on the main signature, and can be used to give information to the outside world from the PL/SQL
- an External Process object You can use this to call an external process. For example if you need to launch an OS call from within PL/SQL you will use this external process.
- a Mapping Sequence is a database sequence. In other words it is a number generator which you can use to create surrogate keys while loading data into for example a dimension.
- A Pre Mapping Process and Post Mapping Process The OWB package that holds the mapping consists of the following:
Pre mapping process
exec <your procedure>
Main mapping process
exec mapping diagram in SQL
Post mapping process
exec <your procedure>
As you can see the mapping consists of 3 parts. The pre mapping process runs before you run the actual mapping. The post mapping one runs after the ETL mapping is complete. You can use these entry points to perform any activity just before or just after the mapping runs. An example of a post mapping process could be to truncate a table of data that you just loaded.
and finally
- a Key Lookup If you use surrogate keys in a dimension, you will have to do a key-lookup to determine which original record belongs to the surrogate key. The most common example is when loading a fact table (let's say orders with records that have product and time keys). You do have the product code, but you need to find the product_id (surrogate key). So you do a lookup to the dimension to find the product_id that belongs to the product code. Then insert that number into the fact to form the FK to the dimension.
For more information on surrogate keys I would suggest to read Ralph Kimball's book on data warehousing.
Hope this helps,
Jean-Pierre

How do you rename the Windows drive in Mac?

I have Windows loaded in BootCamp, but it appears in Mac as 'untitled'. How can I rename it to 'something_XP'?
Many thanks for any help. I am using Lion, highest updates, Bootcamp with Windows XP. The drive on the HD (shared in an iMac 24") is actually named, but the name in Mac is 'untitled'.

Yo Rename it in Windows; RightClick the C: drive object for Rename selection

Trouble with SyBase driver in WebLogic 5.1 SP 7

Dear all,
I modify weblogic.properties to set up DataSource connects to SyBase DB (I use JConnect
5.0 driver). Everything is OK.
But I got ClassCastException when I try to cast from ResultSet to SybResultSet.
Do you know that bug? Anyone can help me?
Thanks in advanced!

Dai Luu wrote:
Dear all,
I modify weblogic.properties to set up DataSource connects to SyBase DB (I use JConnect
5.0 driver). Everything is OK.
But I got ClassCastException when I try to cast from ResultSet to SybResultSet.
Do you know that bug? Anyone can help me?
Thanks in advanced!when you use our pool connections, you will never get a direct reference to any of the
DBMS driver objects. The DataSource gives you an rmi driver object which communicates
to a pool driver object, which wraps the SybResultSet. Mostly, you should not need to cast
to a concrete object unless you want to call a non-standard method. As demand and
practicality indicates, we do sometimes create interfaces to allow you access to non-standard
vendor-specific calls. What is the call you need to make?
Joe

Is it possible to start a windows driver without adm rights?

I have a situation in which I have a driver, a DLL and one application which loads the DLL, all programmed by me. A second application also opens the DLL but its 3rd party software so I have no control over their code.
Both applications have to share the handles to the same object of the driver. So I have to instantiate the driver in the DLL, and duplicate the handles so that when the apps open the DLL they share handles to the same driver object. The problem comes on
starting and stopping the driver, because I need administrator rights to do that and my handle duplication then fails. I have tried changing the security to PROCESS_DUP_HANDLE and it failed anyway. It seems that a process with normal user rights cant duplicate
handles from a process with administrator rights. Can it?
I can require adm rights on my app, but the client would need to open the 3rd party app by right clicking and selecting to open it with adm rights, which is no elegant solution.
So I am thinking about different ways to deal with this situation. Is it possible to start the driver without adm rights? I heard that with named shared memory I wouldnt need to duplicate the handles, however I tried it and it did not work. What other ways
could I deal with this?
Thanks guys!

In the AddService section of the driver INF file it is possible to set the security of the driver loading...
This will let all users with any rights load and unload the driver for example:
Security = "D:(A;OICI;GA;;;WD)"
Then install the driver with the inf file e.g.:
netcfg -l "path_to_inf" -c class -i ID
Then when you try to load the driver with:
net start driver_name
Or
sc start driver_name
It will be loaded even if the command prompt is not with adm privilages.

Getting extensive drive info for data recovery

i want to build a java drive fat file checker so that before each exit/reboot...the files are saved on removable disk keeping the partition information in case of a virus attact that would destroy these fat files.
The problem...is that it has been too long since i have been doing java...i need to get pointed in the right direction for this project.
If anyone could link me to file or drive object models and attributes....as well as any knowledge on drive mapping and drive info gathering would be very welcomed.
Thanks for a great forum guys!
LA

i did notice this java class...although i read that it does not read extended partition information (ie...cluster sizes, starting positions and ending position, pointer locations etc. )
....is there not some wrapper class or something that was created for just this purpose?

Add_drv doesn't recognize my driver..

Hi,
I removed mydriver file from /kernel/drv. Then add_drv mydriver.....is working and mydriver is loaded.
How come this is doing?
I ftped debug version of mydriver and overwritten on to the old one., then i did add_drv.....which is again loading the old version of mydriver.
Why is this happening? This is not happening on other machines.
Please let me know...how to overwrite with my debug version.
thanks
kiran

I removed mydriver file from /kernel/drv. Then add_drv >mydriver.....is working and mydriver is loaded.Is there any other copy in /usr/kernel/drv ?
As 'rule of thumb', I use 'rem_drv' instead of 'rm' for driver object modules.
Ashutosh

How is re-entrancy managed in LVOOP Object Oriented

Hello my fellow LabVillians,
I have yet another question from the land of object oriented programming.
My application uses multiple serial ports and architecualy it made sense to have a common serial driver object and re-use it around my code.
To my surprise, different object instances share (Lock) methods.
My surprise being that this is kind of a fundamental princliple of OOP: Data and Methods Encapsulated within each object.
I guess I understand that that some conditions would need Functional Global Variables, I had assumed that they weren't possible/Practical in OOP.
After I finished having My tantrum and changed the Class .vi to be re-entrant (Share clones is compusory) I found the Following:
1. During Deployment I got a "Lost connection with Target"
2. A broken Arrow
3. Soon after a Labview Crash.
This is pretty repeatable and incredibly annoying.
Anyone else seen similar behavior?
Any one else have an opinion about Object Methods and re-entrancy?
LV11sp1
Kind Regards,
Tim L.
iTm - Senior Systems Engineer
uses: LABVIEW 2012 SP1 x86 on Windows 7 x64. cFP, cRIO, PXI-RT

I suspect you have some other issue in your code. We extensively use both LVOOP and reentrant methods without any issues. In fact, one of our classes is a communications class which supports serial, parallel, USB, Blue Tooth and TCP interfaces. All of our methods that will not effectively execute immediately such as a methods to set or get an attribute are reentrant.
Mark Yedinak
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot

Driver Objects?

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