Difference between revisions of "HelperNotHelper"
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SergeMoutou (Talk | contribs) m (→Class without Helper) |
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| + | {{Documentation/Candidate}} | ||
| + | {{NeedsRework|EN}} | ||
It's important to figure out the difference beween class implementing component when you use or not an helper. | It's important to figure out the difference beween class implementing component when you use or not an helper. | ||
= Class without Helper = | = Class without Helper = | ||
| Line 29: | Line 31: | ||
}; | }; | ||
</source> | </source> | ||
| + | {{Note|As you can see, the class "MyCounterImpl" is derived from XCountable and XServiceInfo, but also from XInterface even if not shown in inheritance part.}} | ||
= Class with an Helper = | = Class with an Helper = | ||
| Line 35: | Line 38: | ||
<source lang="cpp"> | <source lang="cpp"> | ||
| − | class MyCounterImpl : public ::cppu::WeakImplHelper2< | + | class MyCounterImpl : public ::cppu::WeakImplHelper2< XCountable, XServiceInfo > |
| − | + | ||
{ | { | ||
// to obtain other services if needed | // to obtain other services if needed | ||
Reference< XMultiServiceFactory > m_xServiceManager; | Reference< XMultiServiceFactory > m_xServiceManager; | ||
| − | |||
sal_Int32 m_nRefCount; | sal_Int32 m_nRefCount; | ||
sal_Int32 m_nCount; | sal_Int32 m_nCount; | ||
| Line 52: | Line 53: | ||
// XCountable implementation | // XCountable implementation | ||
| − | virtual sal_Int32 SAL_CALL getCount() throw (RuntimeException) | + | virtual sal_Int32 SAL_CALL getCount() throw (RuntimeException); |
| − | + | virtual void SAL_CALL setCount( sal_Int32 nCount ) throw (RuntimeException); | |
| − | virtual void SAL_CALL setCount( sal_Int32 nCount ) throw (RuntimeException) | + | virtual sal_Int32 SAL_CALL increment() throw (RuntimeException); |
| − | + | virtual sal_Int32 SAL_CALL decrement() throw (RuntimeException); | |
| − | virtual sal_Int32 SAL_CALL increment() throw (RuntimeException | + | |
| − | + | ||
| − | virtual sal_Int32 SAL_CALL decrement() throw (RuntimeException | + | |
| − | + | ||
}; | }; | ||
</source> | </source> | ||
| + | |||
| + | Go back to [[Constructing_Components#Results_2|Constructing Components]]. | ||
Latest revision as of 15:28, 4 July 2018
This article should be checked for accuracy and conformity to style.
It's important to figure out the difference beween class implementing component when you use or not an helper.
Class without Helper
Here is the C++ code
class MyCounterImpl : public XCountable, public XServiceInfo { sal_Int32 m_nRefCount; sal_Int32 m_nCount; public: MyCounterImpl( const Reference< XMultiServiceFactory > & xServiceManager ); ~MyCounterImpl(); // XInterface implementation virtual void SAL_CALL acquire() throw (); virtual void SAL_CALL release() throw (); virtual Any SAL_CALL queryInterface( const Type & rType ) throw (RuntimeException); // XServiceInfo implementation virtual OUString SAL_CALL getImplementationName( ) throw(RuntimeException); virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) throw(RuntimeException); virtual Sequence< OUString > SAL_CALL getSupportedServiceNames( ) throw(RuntimeException); static Sequence< OUString > SAL_CALL getSupportedServiceNames_Static( ); // XCountable implementation virtual sal_Int32 SAL_CALL getCount() throw (RuntimeException); virtual void SAL_CALL setCount( sal_Int32 nCount ) throw (RuntimeException); virtual sal_Int32 SAL_CALL increment() throw (RuntimeException); virtual sal_Int32 SAL_CALL decrement() throw (RuntimeException); };
 |
As you can see, the class "MyCounterImpl" is derived from XCountable and XServiceInfo, but also from XInterface even if not shown in inheritance part. |
Class with an Helper
Here is the code
class MyCounterImpl : public ::cppu::WeakImplHelper2< XCountable, XServiceInfo > { // to obtain other services if needed Reference< XMultiServiceFactory > m_xServiceManager; sal_Int32 m_nRefCount; sal_Int32 m_nCount; public: // XServiceInfo implementation virtual OUString SAL_CALL getImplementationName( ) throw(RuntimeException); virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) throw(RuntimeException); virtual Sequence< OUString > SAL_CALL getSupportedServiceNames( ) throw(RuntimeException); static Sequence< OUString > SAL_CALL getSupportedServiceNames_Static( ); // XCountable implementation virtual sal_Int32 SAL_CALL getCount() throw (RuntimeException); virtual void SAL_CALL setCount( sal_Int32 nCount ) throw (RuntimeException); virtual sal_Int32 SAL_CALL increment() throw (RuntimeException); virtual sal_Int32 SAL_CALL decrement() throw (RuntimeException); };
Go back to Constructing Components.
