xref: /AOO42X/main/odk/examples/DevelopersGuide/Components/CppComponent/service1_impl.cxx (revision 34dd1e2512dbacb6a9a7e4c7f17b9296daa8eff3)

/**************************************************************
 *
 * 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 the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *************************************************************/



#include <osl/interlck.h>
#include <osl/mutex.hxx>
#include <rtl/uuid.h>
#include <cppuhelper/factory.hxx>

#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/lang/XTypeProvider.hpp>
#include <my_module/XSomething.hpp>


using namespace ::rtl; // for OUString
using namespace ::com::sun::star; // for odk interfaces
using namespace ::com::sun::star::uno; // for basic types

namespace my_sc_impl
{

Sequence< OUString > SAL_CALL getSupportedServiceNames_MyService1Impl()
{
    Sequence< OUString > names(1);
    names[0] = OUString(RTL_CONSTASCII_USTRINGPARAM("my_module.MyService1"));
    return names;
}

OUString SAL_CALL getImplementationName_MyService1Impl()
{
    return OUString( RTL_CONSTASCII_USTRINGPARAM(
                         "my_module.my_sc_implementation.MyService1") );
}


class MyService1Impl
    : public ::my_module::XSomething
    , public lang::XServiceInfo
    , public lang::XTypeProvider
{
    oslInterlockedCount m_refcount;
    OUString m_sData;
    // it's good practise to store the context for further use when you use
    // other UNO API's in your implementation
    Reference< XComponentContext > m_xContext;
public:
    inline MyService1Impl(Reference< XComponentContext > const & xContext) throw ()
        : m_refcount( 0 ),
          m_xContext(xContext)
        {}

    virtual ~MyService1Impl() {}

    // XInterface
    virtual Any SAL_CALL queryInterface( Type const & type )
        throw (RuntimeException);
    virtual void SAL_CALL acquire()
        throw ();
    virtual void SAL_CALL release()
        throw ();
    // XTypeProvider
    virtual Sequence< Type > SAL_CALL getTypes()
        throw (RuntimeException);
    virtual Sequence< sal_Int8 > SAL_CALL getImplementationId()
        throw (RuntimeException);
    // XSomething
    virtual OUString SAL_CALL methodOne( OUString const & str )
        throw (RuntimeException);
    virtual OUString SAL_CALL methodTwo( )
        throw (RuntimeException);
    // XServiceInfo
    virtual OUString SAL_CALL getImplementationName()
        throw (RuntimeException);
    virtual sal_Bool SAL_CALL supportsService( OUString const & serviceName )
        throw (RuntimeException);
    virtual Sequence< OUString > SAL_CALL getSupportedServiceNames()
        throw (RuntimeException);
};

// XInterface implementation
Any MyService1Impl::queryInterface( Type const & type )
    throw (RuntimeException)
{
    if (type.equals(::cppu::UnoType< Reference< XInterface > >::get()))
    {
        // return XInterface interface
        // (resolve ambiguity by casting to lang::XTypeProvider)
        Reference< XInterface > x(
            static_cast< lang::XTypeProvider * >( this ) );
        return makeAny( x );
    }
    if (type.equals(::cppu::UnoType< Reference< lang::XTypeProvider > >::get()))
    {
        // return XInterface interface
        Reference< XInterface > x(
            static_cast< lang::XTypeProvider * >( this ) );
        return makeAny( x );
    }
    if (type.equals(::cppu::UnoType< Reference< lang::XServiceInfo > >::get()))
    {
        // return XServiceInfo interface
        Reference< lang::XServiceInfo > x(
            static_cast< lang::XServiceInfo * >( this ) );
        return makeAny( x );
    }
    if (type.equals(::cppu::UnoType< Reference< ::my_module::XSomething > >::get()))
    {
        // return sample interface
        Reference< ::my_module::XSomething > x(
            static_cast< ::my_module::XSomething * >( this ) );
        return makeAny( x );
    }
    // querying for unsupported type
    return Any();
}

void MyService1Impl::acquire()
    throw ()
{
    // thread-safe incrementation of reference count
    ::osl_incrementInterlockedCount( &m_refcount );
}

void MyService1Impl::release()
    throw ()
{
    // thread-safe decrementation of reference count
    if (0 == ::osl_decrementInterlockedCount( &m_refcount ))
    {
        delete this; // shutdown this object
    }
}

// XTypeProvider implementation
Sequence< Type > MyService1Impl::getTypes()
    throw (RuntimeException)
{
    Sequence< Type > seq( 3 );
    seq[ 0 ] = ::cppu::UnoType< Reference< lang::XTypeProvider > >::get();
    seq[ 1 ] = ::cppu::UnoType< Reference< lang::XServiceInfo > >::get();
    seq[ 2 ] = ::cppu::UnoType< Reference< ::my_module::XSomething > >::get();
    return seq;
}
Sequence< sal_Int8 > MyService1Impl::getImplementationId()
    throw (RuntimeException)
{
    static Sequence< sal_Int8 > * s_pId = 0;
    if (! s_pId)
    {
        // create unique id
        Sequence< sal_Int8 > id( 16 );
        ::rtl_createUuid( (sal_uInt8 *)id.getArray(), 0, sal_True );
        // guard initialization with some mutex
        ::osl::MutexGuard guard( ::osl::Mutex::getGlobalMutex() );
        if (! s_pId)
        {
            static Sequence< sal_Int8 > s_id( id );
            s_pId = &s_id;
        }
    }
    return *s_pId;
}

// XSomething implementation
OUString MyService1Impl::methodOne( OUString const & str )
    throw (RuntimeException)
{
    m_sData = str;
    return OUString( RTL_CONSTASCII_USTRINGPARAM(
        "called methodOne() of MyService1 implementation: ") ) + m_sData;
}

OUString MyService1Impl::methodTwo( )
    throw (RuntimeException)
{
    return OUString( RTL_CONSTASCII_USTRINGPARAM(
        "called methodTwo() of MyService1 implementation: ") ) + m_sData;
}

// XServiceInfo implementation
OUString MyService1Impl::getImplementationName()
    throw (RuntimeException)
{
    // unique implementation name
    return OUString( RTL_CONSTASCII_USTRINGPARAM(
                         "my_module.my_sc_implementation.MyService1") );
}
sal_Bool MyService1Impl::supportsService( OUString const & serviceName )
    throw (RuntimeException)
{
    // this object only supports one service, so the test is simple
    return serviceName.equalsAsciiL( RTL_CONSTASCII_STRINGPARAM(
                                         "my_module.MyService1") );
}
Sequence< OUString > MyService1Impl::getSupportedServiceNames()
    throw (RuntimeException)
{
    // this object only supports one service
    OUString serviceName( RTL_CONSTASCII_USTRINGPARAM("my_module.MyService1") );
    return Sequence< OUString >( &serviceName, 1 );
}

Reference< XInterface > SAL_CALL create_MyService1Impl(
    Reference< XComponentContext > const & xContext )
    SAL_THROW( () )
{
    return static_cast< lang::XTypeProvider * >( new MyService1Impl( xContext) );
}

// forward decl: implemented in service2_impl.cxx
Reference< XInterface > SAL_CALL create_MyService2Impl(
    Reference< XComponentContext > const & ) SAL_THROW( () );

}

/*
extern "C" SAL_DLLPUBLIC_EXPORT void SAL_CALL component_getImplementationEnvironment(
    sal_Char const ** ppEnvTypeName, uno_Environment ** )
{
    *ppEnvTypeName = CPPU_CURRENT_LANGUAGE_BINDING_NAME;
}

// This method not longer necessary since OOo 3.4 where the component registration was
// was changed to passive component registration. For more details see
// http://wiki.services.openoffice.org/wiki/Passive_Component_Registration
//
// extern "C" SAL_DLLPUBLIC_EXPORT sal_Bool SAL_CALL component_writeInfo(
//     lang::XMultiServiceFactory * xMgr, registry::XRegistryKey * xRegistry )
// {
//     if (xRegistry)
//     {
//         try
//         {
//             // implementation of MyService1A
//             Reference< registry::XRegistryKey > xKey(
//                 xRegistry->createKey( OUString( RTL_CONSTASCII_USTRINGPARAM(
//                     "my_module.my_sc_implementation.MyService1/UNO/SERVICES") ) ) );
//             // subkeys denote implemented services of implementation
//             xKey->createKey( OUString( RTL_CONSTASCII_USTRINGPARAM(
//                 "my_module.MyService1") ) );
//             // implementation of MyService1B
//             xKey = xRegistry->createKey( OUString( RTL_CONSTASCII_USTRINGPARAM(
//                 "my_module.my_sc_implementation.MyService2/UNO/SERVICES") ) );
//             // subkeys denote implemented services of implementation
//             xKey->createKey( OUString( RTL_CONSTASCII_USTRINGPARAM(
//                 "my_module.MyService2") ) );
//             return sal_True; // success
//         }
//         catch (registry::InvalidRegistryException &)
//         {
//             // function fails if exception caught
//         }
//     }
//     return sal_False;
// }

extern "C" SAL_DLLPUBLIC_EXPORT void * SAL_CALL component_getFactory(
    sal_Char const * implName, lang::XMultiServiceFactory * xMgr, void * )
{
    Reference< lang::XSingleComponentFactory > xFactory;
    if (0 == ::rtl_str_compare( implName, "my_module.my_sc_implementation.MyService1" ))
    {
        // create component factory for MyService1 implementation
        OUString serviceName( RTL_CONSTASCII_USTRINGPARAM("my_module.MyService1") );
        xFactory = ::cppu::createSingleComponentFactory(
            ::my_sc_impl::create_MyService1Impl,
            OUString( RTL_CONSTASCII_USTRINGPARAM("my_module.my_sc_implementation.MyService1") ),
            Sequence< OUString >( &serviceName, 1 ) );
    }
    else if (0 == ::rtl_str_compare( implName, "my_module.my_sc_implementation.MyService2" ))
    {
        // create component factory for MyService12 implementation
        OUString serviceName( RTL_CONSTASCII_USTRINGPARAM("my_module.MyService2") );
        xFactory = ::cppu::createSingleComponentFactory(
            ::my_sc_impl::create_MyService2Impl,
            OUString( RTL_CONSTASCII_USTRINGPARAM("my_module.my_sc_implementation.MyService2") ),
            Sequence< OUString >( &serviceName, 1 ) );
    }
    if (xFactory.is())
        xFactory->acquire();
    return xFactory.get(); // return acquired interface pointer or null
}
*/