Difference between revisions of "Uno/Cpp/Spec/FreeReference"

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(Added example snippet.)
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Type: specification State: draft
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Type: Specification State: Evolving  Availability: URE 1.3 (SRC680_m212)
  
 
==Feature==
 
==Feature==
A free reference, ensuring that the owning environment has always been entered when calling an object.
+
A free reference, ensuring that the managing environment has always been entered when calling an object.
  
 
==API==
 
==API==
<code>[cpp]
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<source lang="cpp">
 
cppu/FreeReference.hxx
 
cppu/FreeReference.hxx
  
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     bool operator != (FreeReference const & rOther) const
 
     bool operator != (FreeReference const & rOther) const
</code>
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</source>
  
 
==Usage Example==
 
==Usage Example==
 
{{:Uno/Cpp/Snippet/FreeReference}}
 
{{:Uno/Cpp/Snippet/FreeReference}}
 +
 +
More Examples:
 +
* [[Uno/Cpp/Snippet/Function always returning an appropriate object]]
  
 
==Dependencies==
 
==Dependencies==
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[[Category:Uno:Cpp:Spec]]
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[[Category:Evolving]]
[[Category:draft]]
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[[Category:Spec]]
 +
[[Category:Uno]]
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[[Category:Uno:Cpp]]

Latest revision as of 12:32, 12 March 2009

Type: Specification State: Evolving Availability: URE 1.3 (SRC680_m212)

Feature

A free reference, ensuring that the managing environment has always been entered when calling an object.

API

cppu/FreeReference.hxx
 
  template<class T> FreeReference
    FreeReference() {}
    FreeReference(cssuno::Reference<T> const & xRef)
    FreeReference(EnvAwareReference<T> const & rOther)
 
    cssuno::Reference<T> get() const throw (cssuno::RuntimeException)
 
    operator cssuno::Reference<T> () const throw (cssuno::RuntimeException)
 
    T * operator -> () const throw (cssuno::RuntimeException)
 
    bool is() const throw (cssuno::RuntimeException)
 
    void clear()
 
    FreeReference<T> & operator = (FreeReference<T> const & rOther)
 
    void set(cssuno::Reference<T> const & xRef)
 
    bool operator == (FreeReference const & rOther) const
 
    bool operator != (FreeReference const & rOther) const

Usage Example

#include <cppu/EnvGuards.hxx>
...
{ 
  com::sun::star::uno::Reference<XFoo> ref(...)
  ...
  cppu::FreeReference<XFoo> free_xFoo(xFoo);
  cppu::EnvGuard otherEnv(cppu::Environment("just another env"));
 
  free_xFoo->doSomething(); // the free reference ensures that the correct environment etc. gets activated before invokation
  ...
}

More Examples:

Dependencies

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