registerucb.cxx

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 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
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 */
 
#include <ucbhelper/registerucb.hxx>
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <com/sun/star/ucb/DuplicateProviderException.hpp>
#include <com/sun/star/ucb/XContentProviderManager.hpp>
#include <com/sun/star/ucb/XParameterizedContentProvider.hpp>
#include <com/sun/star/ucb/ContentProviderProxyFactory.hpp>
#include <com/sun/star/ucb/XContentProviderFactory.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <com/sun/star/uno/RuntimeException.hpp>
 
#include <osl/diagnose.h>
 
using namespace com::sun::star;
 
namespace ucbhelper {
 
bool
registerAtUcb(
    uno::Reference< ucb::XContentProviderManager > const & rManager,
    uno::Reference< uno::XComponentContext > const & rxContext,
    OUString const & rName,
    OUString const & rArguments,
    OUString const & rTemplate)
{
    OSL_ENSURE(rxContext.is(),
               "ucb::registerAtUcb(): No service factory");
 
    bool bNoProxy = rArguments.startsWith("{noproxy}");
    OUString
        aProviderArguments(bNoProxy ?
                               rArguments.
                                   copy(RTL_CONSTASCII_LENGTH("{noproxy}")) :
                               rArguments);
 
    uno::Reference< ucb::XContentProvider > xProvider;
 
    if (!rName.isEmpty())
    {
        // First, try to instantiate proxy for provider:
        if (!bNoProxy)
        {
            uno::Reference< ucb::XContentProviderFactory > xProxyFactory;
            try
            {
                xProxyFactory = ucb::ContentProviderProxyFactory::create( rxContext );
            }
            catch (uno::Exception const &) {}
            OSL_ENSURE(xProxyFactory.is(), "No ContentProviderProxyFactory");
            if (xProxyFactory.is())
                xProvider = xProxyFactory->createContentProvider(rName);
        }
 
        // Then, try to instantiate provider directly:
        if (!xProvider.is())
            try
            {
                xProvider.set(
                    rxContext->getServiceManager()->createInstanceWithContext(rName, rxContext),
                    uno::UNO_QUERY);
            }
            catch (uno::RuntimeException const &) { throw; }
            catch (uno::Exception const &) {}
    }
 
    uno::Reference< ucb::XParameterizedContentProvider >
        xParameterized(xProvider, uno::UNO_QUERY);
    if (xParameterized.is())
    {
        uno::Reference< ucb::XContentProvider > xInstance;
        try
        {
            xInstance = xParameterized->registerInstance(rTemplate,
                                                         aProviderArguments,
                                                         true);
                //@@@ if this call replaces an old instance, the commit-or-
                // rollback code below will not work
        }
        catch (lang::IllegalArgumentException const &) {}
 
        if (xInstance.is())
            xProvider = xInstance;
    }
 
    bool bSuccess = false;
    if (rManager.is() && (rName.isEmpty() || xProvider.is()))
    {
        try
        {
            rManager->registerContentProvider(xProvider, rTemplate, true);
            bSuccess = true;
        }
        catch (ucb::DuplicateProviderException const &)
        {
            if (xParameterized.is())
                try
                {
                    xParameterized->deregisterInstance(rTemplate,
                                                       aProviderArguments);
                }
                catch (lang::IllegalArgumentException const &) {}
        }
        catch (...)
        {
            if (xParameterized.is())
                try
                {
                    xParameterized->deregisterInstance(rTemplate,
                                                       aProviderArguments);
                }
                catch (lang::IllegalArgumentException const &) {}
                catch (uno::RuntimeException const &) {}
            throw;
        }
    }
    return bSuccess;
}
 
}
 
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