Re: [dev] Problem in accessing HierarchyDataReadWriteAccess service

Mon, 11 Apr 2005 07:44:44 -0700 

Hi,

the implementation of "com.sun.star.ucb.HierarchyDataReadWriteAccess" relies on other services. For example, it needs "com.sun.star.configuration.ConfigurationProvider". Are you able to instanciate this service?

For details of the implementation of HierarchyDataSource::createInstance
refer to
http://ucb.openoffice.org/source/browse/ucb/ucb/source/ucp/hierarchy/hierarchydatasource.cxx

- Kai.

Sunil Todi wrote:

Hi,

  Thanks for the quick response. I have further queries.

  I tried to use DefaultHierarchyDataSource service. I was able to get
instance of the this service. According to the documentation, through it's
own XMultiServiceFactory interface implementation, I am trying to create the
instance of com.sun.star.ubp.HierarchyDataReadWriteAccess. It's not creating
the instance, even though it shows this service name in
getAvailableServiceNames() method. Am I doing something wrong? Do I need to
do something more to create an instance of
com.sun.star.ubp.HierarchyDataReadWriteAccess?

  Below is my uno client code:

int SAL_CALL main(int argc, char **argv)
{
        Reference< XSimpleRegistry > xReg = createSimpleRegistry();
        if(!xReg.is())
        {
                cout<<"### cannot get service instance of
\"com.sun.star.regiystry.SimpleRegistry\"!\n";
                exit(EXIT_FAILURE);
        }

        xReg->open(OUString::createFromAscii("./types.rdb"), sal_False, 
sal_False);
        if(!xReg->isValid())
        {
                cout<<"### cannot open test registry \"types.rdb\"!\n";
                exit(EXIT_FAILURE);
        }

        Reference< XComponentContext > xContext =
bootstrap_InitialComponentContext(xReg);
        if(!xContext.is())
        {
            cout<<"### cannot create intial component context!\n";
            exit(EXIT_FAILURE);
        }

        Reference< XMultiComponentFactory > xMgr = 
xContext->getServiceManager();
        if(!xMgr.is())
        {
                cout<<"### cannot get initial service manager!\n";
                exit(EXIT_FAILURE);
        }

        // get a HierarchyDataReadWriteAccess instance
        Reference< XInterface > HierarchyDataSource ;
        HierarchyDataSource =
xMgr->createInstanceWithContext(OUString::createFromAscii("com.sun.star.ucb.
DefaultHierarchyDataSource"), xContext);

        if(!HierarchyDataSource.is())
        {
                cout<<"### cannot get service instance of
\"com.sun.star.ucb.DefaultHierarchyDataSource\"!\n";
                exit(EXIT_FAILURE);
        }

        Reference< XMultiServiceFactory > xMSF( HierarchyDataSource, UNO_QUERY 
);
        if(!xMSF.is())
        {
                cout<<"### cannot get intetrface  \"XMultiServiceFactory\"!\n";
                exit(EXIT_FAILURE);
        }

        Sequence< OUString > supportedServiceNames =
xMSF->getAvailableServiceNames();
        //Printing all supported services.
        for( sal_Int32 serviceCount = 0 ; serviceCount <
supportedServiceNames.getLength() ; serviceCount ++ )
        {
                cout<<serviceCount+1<<". ";

cout<<OUStringToOString(supportedServiceNames.getConstArray()[serviceCount],
RTL_TEXTENCODING_ASCII_US).getStr();
                cout<<endl;
        }


    Reference< XInterface > HieDataReadWriteAcc =
xMSF->createInstance(OUString::createFromAscii("com.sun.star.ucb.HierarchyDa
taReadWriteAccess"));

        if(!HieDataReadWriteAcc.is())
        {
                cout<<"### cannot get service instance of
\"com.sun.star.ucb.HierarchyDataReadWriteAccess\"!\n";
                exit(EXIT_FAILURE);
        }

        Reference< XNameContainer > xNC( HieDataReadWriteAcc, UNO_QUERY );
        if(!xNC.is())
        {
                cout<<"### cannot get intetrface  \"XNameContainer\"!\n";
                exit(EXIT_FAILURE);
        }


    Reference< XComponent >::query( xContext )->dispose();
        return 0;
}


Thanks and Regards,
Sunil



-----Original Message-----
From: Joerg Barfurth [mailto:[EMAIL PROTECTED]
Sent: Friday, April 08, 2005 7:38 PM
To: [email protected]
Subject: Re: [dev] Problem in accessing HierarchyDataReadWriteAccess
service


Hi Sunil,

Sunil Todi wrote:

Hi,

 I am trying to find the implementations of HierarchyDataReadWriteAccess
and HierarchyDataReadAccess services. I tried  services.rdb but couldn't
locate them there. Do I need to download them separately and register??
Online documentation for these services can be found at



Hava a look at services HierarchyDataSource and DefaultHierarchyDataSource.

BTW: Services are abstract concepts, not concrete classes. Thus there
isn't necessarily *the* implementations of these services. For any given
service there may be any number of implementations. I am sure there are
some services defined in OOo IDL for which there are zero
implementations - but if there is an implementation of
DefaultHierarchyDataSource this probably isn't a case of that.

HTH, Joerg

--
Joerg Barfurth              Sun Microsystems - Desktop - Hamburg
 >>>>>>>>>>>>>>>>>> using std::disclaimer <<<<<<<<<<<<<<<<<<<<<<<
Software Engineer                         [EMAIL PROTECTED]
OpenOffice.org Configuration          http://util.openoffice.org


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