Class ClassDefiner


  • public final class ClassDefiner
    extends Object
    A hook for frameworks which need to define additional classes to a module's class loader.
    • Method Detail

      • defineClass

        public Class<?> defineClass​(Class<?> originalClass,
                                    String className,
                                    ByteBuffer classBytes)
        Define a class using the module and protection domain of an existing class.
        Parameters:
        originalClass - the existing class (must not be null)
        className - the new class name (must not be null)
        classBytes - the new class bytes (must not be null)
        Returns:
        the defined class (not null)
      • defineClass

        public Class<?> defineClass​(Class<?> originalClass,
                                    String className,
                                    byte[] classBytes,
                                    int off,
                                    int len)
        Define a class using the module and protection domain of an existing class.
        Parameters:
        originalClass - the existing class (must not be null)
        className - the new class name (must not be null)
        classBytes - the new class bytes (must not be null)
        off - the offset into the classBytes array
        len - the number of bytes to use from the classBytes array
        Returns:
        the defined class (not null)
      • defineClass

        public Class<?> defineClass​(Class<?> originalClass,
                                    String className,
                                    byte[] classBytes)
        Define a class using the module and protection domain of an existing class.
        Parameters:
        originalClass - the existing class (must not be null)
        className - the new class name (must not be null)
        classBytes - the new class bytes (must not be null)
        Returns:
        the defined class (not null)
      • defineClass

        public Class<?> defineClass​(Class<?> originalClass,
                                    String className,
                                    ProtectionDomain protectionDomain,
                                    ByteBuffer classBytes)
        Define a class using the module of an existing class.
        Parameters:
        originalClass - the existing class (must not be null)
        className - the new class name (must not be null)
        protectionDomain - the protection domain of the new class (must not be null)
        classBytes - the new class bytes (must not be null)
        Returns:
        the defined class (not null)
      • defineClass

        public Class<?> defineClass​(Class<?> originalClass,
                                    String className,
                                    ProtectionDomain protectionDomain,
                                    byte[] classBytes,
                                    int off,
                                    int len)
        Define a class using the module of an existing class.
        Parameters:
        originalClass - the existing class (must not be null)
        className - the new class name (must not be null)
        protectionDomain - the protection domain of the new class (must not be null)
        classBytes - the new class bytes (must not be null)
        off - the offset into the classBytes array
        len - the number of bytes to use from the classBytes array
        Returns:
        the defined class (not null)
      • defineClass

        public Class<?> defineClass​(Class<?> originalClass,
                                    String className,
                                    ProtectionDomain protectionDomain,
                                    byte[] classBytes)
        Define a class using the module of an existing class.
        Parameters:
        originalClass - the existing class (must not be null)
        className - the new class name (must not be null)
        protectionDomain - the protection domain of the new class (must not be null)
        classBytes - the new class bytes (must not be null)
        Returns:
        the defined class (not null)
      • defineClass

        public Class<?> defineClass​(Module module,
                                    String className,
                                    ProtectionDomain protectionDomain,
                                    ByteBuffer classBytes)
        Define a class.
        Parameters:
        module - the module to define the class to (must not be null)
        className - the new class name (must not be null)
        protectionDomain - the protection domain of the new class (must not be null)
        classBytes - the new class bytes (must not be null)
        Returns:
        the defined class (not null)
      • defineClass

        public Class<?> defineClass​(Module module,
                                    String className,
                                    ProtectionDomain protectionDomain,
                                    byte[] classBytes,
                                    int off,
                                    int len)
        Define a class.
        Parameters:
        module - the module to define the class to (must not be null)
        className - the new class name (must not be null)
        protectionDomain - the protection domain of the new class (must not be null)
        classBytes - the new class bytes (must not be null)
        off - the offset into the classBytes array
        len - the number of bytes to use from the classBytes array
        Returns:
        the defined class (not null)
      • defineClass

        public Class<?> defineClass​(Module module,
                                    String className,
                                    ProtectionDomain protectionDomain,
                                    byte[] classBytes)
        Define a class.
        Parameters:
        module - the module to define the class to (must not be null)
        className - the new class name (must not be null)
        protectionDomain - the protection domain of the new class (must not be null)
        classBytes - the new class bytes (must not be null)
        Returns:
        the defined class (not null)
      • getInstance

        public static ClassDefiner getInstance()
        Get the class definer instance. The caller must have the createClassLoader RuntimePermission.
        Returns:
        the singleton class definer instance (not null)