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#ifndef INCLUDED_JVMACCESS_UNOVIRTUALMACHINE_HXX
#define INCLUDED_JVMACCESS_UNOVIRTUALMACHINE_HXX

#include <jvmaccess/jvmaccessdllapi.h>
#include <sal/config.h>
#include <salhelper/simplereferenceobject.hxx>
#include <rtl/ref.hxx>

namespace jvmaccess {

class VirtualMachine;

/** An encapsulating wrapper around a Java virtual machine and an appropriate
    UNO class loader.
 */
class JVMACCESS_DLLPUBLIC UnoVirtualMachine: public salhelper::SimpleReferenceObject {
public:
    /** An exception indicating failure to create a UnoVirtualMachine.
     */
    class JVMACCESS_DLLPUBLIC CreationException final
    {
    public:
        CreationException();

        CreationException(CreationException const &);

        ~CreationException();

        CreationException & operator =(CreationException const &);
    };

    /** Create a wrapper around a Java virtual machine and an appropriate UNO
        class loader.

        @param virtualMachine
        A Java virtual machine wrapper.  Must not be null.

        @param classLoader
        A local or global JNI reference, relative to the given virtualMachine,
        to an appropriate UNO class loader instance.  Must not be null.  This
        parameter should be of type jobject, not void *, but the exact
        definition of jobject is different for different JDK versions, so that
        the mangled C++ name of the constructor would depend on the JDK version
        used at compile time.

        @exception CreationException
        Thrown in case creation fails (due to a JNI problem).
     */
    UnoVirtualMachine(
        rtl::Reference< jvmaccess::VirtualMachine > const & virtualMachine,
        void * classLoader);

    /** Get the Java virtual machine wrapper.

        @return
        The Java virtual machine wrapper.  Will never be null.
     */
    const rtl::Reference< jvmaccess::VirtualMachine >& getVirtualMachine() const;

    /** Get the UNO class loader.

        @return
        A global JNI reference to the UNO class loader.  (The JNI reference must
        not be deleted by client code.)  Will never be null.  This should be of
        type jobject, not void *, but the exact definition of jobject is
        different for different JDK versions, so that the mangled C++ name of
        the function would depend on the JDK version used at compile time.
     */
    void * getClassLoader() const { return m_classLoader;}

private:
    UnoVirtualMachine(UnoVirtualMachine const &) = delete;
    UnoVirtualMachine& operator =(UnoVirtualMachine const &) = delete;

    virtual ~UnoVirtualMachine() override;

    rtl::Reference< jvmaccess::VirtualMachine > m_virtualMachine;
    void * m_classLoader;
};

}

#endif

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