Module java.corba

Class _DynStructStub

    • Field Detail

      • _opsClass

        public static final Class _opsClass
    • Constructor Detail

      • _DynStructStub

        public _DynStructStub()
    • Method Detail

      • current_member_name

        public String current_member_name()
                                   throws TypeMismatch,
                                          InvalidValue
        Returns the name of the member at the current position. This operation may return an empty string since the TypeCode of the value being manipulated may not contain the names of members.
        Specified by:
        current_member_name in interface DynStructOperations
        Throws:
        TypeMismatch - if the DynStruct represents an empty exception.
        InvalidValue - if the current position does not indicate a member
      • current_member_kind

        public TCKind current_member_kind()
                                   throws TypeMismatch,
                                          InvalidValue
        Returns the TCKind associated with the member at the current position.
        Specified by:
        current_member_kind in interface DynStructOperations
        Throws:
        TypeMismatch - if the DynStruct represents an empty exception.
        InvalidValue - if the current position does not indicate a member
      • get_members

        public NameValuePair[] get_members()
        Returns a sequence of NameValuePairs describing the name and the value of each member in the struct associated with a DynStruct object. The sequence contains members in the same order as the declaration order of members as indicated by the DynStruct's TypeCode. The current position is not affected. The member names in the returned sequence will be empty strings if the DynStruct's TypeCode does not contain member names.
        Specified by:
        get_members in interface DynStructOperations
      • set_members

        public void set_members​(NameValuePair[] value)
                         throws TypeMismatch,
                                InvalidValue
        Initializes the struct data value associated with a DynStruct object from a sequence of NameValuePairs. The operation sets the current position to zero if the passed sequences has non-zero length. Otherwise, if an empty sequence is passed, the current position is set to -1.

        Members must appear in the NameValuePairs in the order in which they appear in the IDL specification of the struct as indicated by the DynStruct's TypeCode or they must be empty strings. The operation makes no attempt to assign member values based on member names.

        Specified by:
        set_members in interface DynStructOperations
        Throws:
        TypeMismatch - if the member names supplied in the passed sequence do not match the corresponding member name in the DynStruct's TypeCode and they are not empty strings
        InvalidValue - if the passed sequence has a number of elements that disagrees with the number of members as indicated by the DynStruct's TypeCode
      • get_members_as_dyn_any

        public NameDynAnyPair[] get_members_as_dyn_any()
        Returns a sequence of NameDynAnyPairs describing the name and the value of each member in the struct associated with a DynStruct object. The sequence contains members in the same order as the declaration order of members as indicated by the DynStruct's TypeCode. The current position is not affected. The member names in the returned sequence will be empty strings if the DynStruct's TypeCode does not contain member names.
        Specified by:
        get_members_as_dyn_any in interface DynStructOperations
      • set_members_as_dyn_any

        public void set_members_as_dyn_any​(NameDynAnyPair[] value)
                                    throws TypeMismatch,
                                           InvalidValue
        Initializes the struct data value associated with a DynStruct object from a sequence of NameDynAnyPairs. The operation sets the current position to zero if the passed sequences has non-zero length. Otherwise, if an empty sequence is passed, the current position is set to -1.

        Members must appear in the NameDynAnyPairs in the order in which they appear in the IDL specification of the struct as indicated by the DynStruct's TypeCode or they must be empty strings. The operation makes no attempt to assign member values based on member names.

        Specified by:
        set_members_as_dyn_any in interface DynStructOperations
        Throws:
        TypeMismatch - if the member names supplied in the passed sequence do not match the corresponding member name in the DynStruct's TypeCode and they are not empty strings
        InvalidValue - if the passed sequence has a number of elements that disagrees with the number of members as indicated by the DynStruct's TypeCode
      • type

        public TypeCode type()
        Returns the TypeCode associated with this DynAny object. A DynAny object is created with a TypeCode value assigned to it. This TypeCode value determines the type of the value handled through the DynAny object. Note that the TypeCode associated with a DynAny object is initialized at the time the DynAny is created and cannot be changed during lifetime of the DynAny object.
        Specified by:
        type in interface DynAnyOperations
        Returns:
        The TypeCode associated with this DynAny object
      • assign

        public void assign​(DynAny dyn_any)
                    throws TypeMismatch
        Initializes the value associated with a DynAny object with the value associated with another DynAny object. The current position of the target DynAny is set to zero for values that have components and to -1 for values that do not have components.
        Specified by:
        assign in interface DynAnyOperations
        Parameters:
        dyn_any -
        Throws:
        TypeMismatch - if the type of the passed DynAny is not equivalent to the type of target DynAny
      • from_any

        public void from_any​(Any value)
                      throws TypeMismatch,
                             InvalidValue
        Initializes the value associated with a DynAny object with the value contained in an any. The current position of the target DynAny is set to zero for values that have components and to -1 for values that do not have components.
        Specified by:
        from_any in interface DynAnyOperations
        Throws:
        TypeMismatch - if the type of the passed Any is not equivalent to the type of target DynAny
        InvalidValue - if the passed Any does not contain a legal value (such as a null string)
      • to_any

        public Any to_any()
        Creates an any value from a DynAny object. A copy of the TypeCode associated with the DynAny object is assigned to the resulting any. The value associated with the DynAny object is copied into the any.
        Specified by:
        to_any in interface DynAnyOperations
        Returns:
        a new Any object with the same value and TypeCode
      • equal

        public boolean equal​(DynAny dyn_any)
        Compares two DynAny values for equality. Two DynAny values are equal if their TypeCodes are equivalent and, recursively, all component DynAnys have equal values. The current position of the two DynAnys being compared has no effect on the result of equal.
        Specified by:
        equal in interface DynAnyOperations
        Returns:
        true of the DynAnys are equal, false otherwise
      • destroy

        public void destroy()
        Destroys a DynAny object. This operation frees any resources used to represent the data value associated with a DynAny object. It must be invoked on references obtained from one of the creation operations on the ORB interface or on a reference returned by DynAny.copy() to avoid resource leaks. Invoking destroy on component DynAny objects (for example, on objects returned by the current_component operation) does nothing. Destruction of a DynAny object implies destruction of all DynAny objects obtained from it. That is, references to components of a destroyed DynAny become invalid. Invocations on such references raise OBJECT_NOT_EXIST. It is possible to manipulate a component of a DynAny beyond the life time of the DynAny from which the component was obtained by making a copy of the component with the copy operation before destroying the DynAny from which the component was obtained.
        Specified by:
        destroy in interface DynAnyOperations
      • copy

        public DynAny copy()
        Creates a new DynAny object whose value is a deep copy of the DynAny on which it is invoked. The operation is polymorphic, that is, invoking it on one of the types derived from DynAny, such as DynStruct, creates the derived type but returns its reference as the DynAny base type.
        Specified by:
        copy in interface DynAnyOperations
        Returns:
        a deep copy of the DynAny object
      • insert_boolean

        public void insert_boolean​(boolean value)
                            throws TypeMismatch,
                                   InvalidValue
        Inserts a boolean value into the DynAny.
        Specified by:
        insert_boolean in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_octet

        public void insert_octet​(byte value)
                          throws TypeMismatch,
                                 InvalidValue
        Inserts a byte value into the DynAny. The IDL octet data type is mapped to the Java byte data type.
        Specified by:
        insert_octet in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_char

        public void insert_char​(char value)
                         throws TypeMismatch,
                                InvalidValue
        Inserts a char value into the DynAny.
        Specified by:
        insert_char in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_short

        public void insert_short​(short value)
                          throws TypeMismatch,
                                 InvalidValue
        Inserts a short value into the DynAny.
        Specified by:
        insert_short in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_ushort

        public void insert_ushort​(short value)
                           throws TypeMismatch,
                                  InvalidValue
        Inserts a short value into the DynAny. The IDL ushort data type is mapped to the Java short data type.
        Specified by:
        insert_ushort in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_long

        public void insert_long​(int value)
                         throws TypeMismatch,
                                InvalidValue
        Inserts an integer value into the DynAny. The IDL long data type is mapped to the Java int data type.
        Specified by:
        insert_long in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_ulong

        public void insert_ulong​(int value)
                          throws TypeMismatch,
                                 InvalidValue
        Inserts an integer value into the DynAny. The IDL ulong data type is mapped to the Java int data type.
        Specified by:
        insert_ulong in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_float

        public void insert_float​(float value)
                          throws TypeMismatch,
                                 InvalidValue
        Inserts a float value into the DynAny.
        Specified by:
        insert_float in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_double

        public void insert_double​(double value)
                           throws TypeMismatch,
                                  InvalidValue
        Inserts a double value into the DynAny.
        Specified by:
        insert_double in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_string

        public void insert_string​(String value)
                           throws TypeMismatch,
                                  InvalidValue
        Inserts a string value into the DynAny. Both bounded and unbounded strings are inserted using this method.
        Specified by:
        insert_string in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        InvalidValue - if the string inserted is longer than the bound of a bounded string
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_reference

        public void insert_reference​(Object value)
                              throws TypeMismatch,
                                     InvalidValue
        Inserts a reference to a CORBA object into the DynAny.
        Specified by:
        insert_reference in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_typecode

        public void insert_typecode​(TypeCode value)
                             throws TypeMismatch,
                                    InvalidValue
        Inserts a TypeCode object into the DynAny.
        Specified by:
        insert_typecode in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_longlong

        public void insert_longlong​(long value)
                             throws TypeMismatch,
                                    InvalidValue
        Inserts a long value into the DynAny. The IDL long long data type is mapped to the Java long data type.
        Specified by:
        insert_longlong in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_ulonglong

        public void insert_ulonglong​(long value)
                              throws TypeMismatch,
                                     InvalidValue
        Inserts a long value into the DynAny. The IDL unsigned long long data type is mapped to the Java long data type.
        Specified by:
        insert_ulonglong in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_wchar

        public void insert_wchar​(char value)
                          throws TypeMismatch,
                                 InvalidValue
        Inserts a char value into the DynAny. The IDL wchar data type is mapped to the Java char data type.
        Specified by:
        insert_wchar in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_wstring

        public void insert_wstring​(String value)
                            throws TypeMismatch,
                                   InvalidValue
        Inserts a string value into the DynAny. Both bounded and unbounded strings are inserted using this method.
        Specified by:
        insert_wstring in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        InvalidValue - if the string inserted is longer than the bound of a bounded string
        TypeMismatch
      • insert_any

        public void insert_any​(Any value)
                        throws TypeMismatch,
                               InvalidValue
        Inserts an Any value into the Any represented by this DynAny.
        Specified by:
        insert_any in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_dyn_any

        public void insert_dyn_any​(DynAny value)
                            throws TypeMismatch,
                                   InvalidValue
        Inserts the Any value contained in the parameter DynAny into the Any represented by this DynAny.
        Specified by:
        insert_dyn_any in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • insert_val

        public void insert_val​(Serializable value)
                        throws TypeMismatch,
                               InvalidValue
        Inserts a reference to a Serializable object into this DynAny. The IDL ValueBase type is mapped to the Java Serializable type.
        Specified by:
        insert_val in interface DynAnyOperations
        Throws:
        InvalidValue - if this DynAny has components but has a current position of -1
        TypeMismatch - if called on a DynAny whose current component itself has components
      • get_boolean

        public boolean get_boolean()
                            throws TypeMismatch,
                                   InvalidValue
        Extracts the boolean value from this DynAny.
        Specified by:
        get_boolean in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_octet

        public byte get_octet()
                       throws TypeMismatch,
                              InvalidValue
        Extracts the byte value from this DynAny. The IDL octet data type is mapped to the Java byte data type.
        Specified by:
        get_octet in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_char

        public char get_char()
                      throws TypeMismatch,
                             InvalidValue
        Extracts the char value from this DynAny.
        Specified by:
        get_char in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_short

        public short get_short()
                        throws TypeMismatch,
                               InvalidValue
        Extracts the short value from this DynAny.
        Specified by:
        get_short in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_ushort

        public short get_ushort()
                         throws TypeMismatch,
                                InvalidValue
        Extracts the short value from this DynAny. The IDL ushort data type is mapped to the Java short data type.
        Specified by:
        get_ushort in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_long

        public int get_long()
                     throws TypeMismatch,
                            InvalidValue
        Extracts the integer value from this DynAny. The IDL long data type is mapped to the Java int data type.
        Specified by:
        get_long in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_ulong

        public int get_ulong()
                      throws TypeMismatch,
                             InvalidValue
        Extracts the integer value from this DynAny. The IDL ulong data type is mapped to the Java int data type.
        Specified by:
        get_ulong in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_float

        public float get_float()
                        throws TypeMismatch,
                               InvalidValue
        Extracts the float value from this DynAny.
        Specified by:
        get_float in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_double

        public double get_double()
                          throws TypeMismatch,
                                 InvalidValue
        Extracts the double value from this DynAny.
        Specified by:
        get_double in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_string

        public String get_string()
                          throws TypeMismatch,
                                 InvalidValue
        Extracts the string value from this DynAny. Both bounded and unbounded strings are extracted using this method.
        Specified by:
        get_string in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_reference

        public Object get_reference()
                             throws TypeMismatch,
                                    InvalidValue
        Extracts the reference to a CORBA Object from this DynAny.
        Specified by:
        get_reference in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_typecode

        public TypeCode get_typecode()
                              throws TypeMismatch,
                                     InvalidValue
        Extracts the TypeCode object from this DynAny.
        Specified by:
        get_typecode in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_longlong

        public long get_longlong()
                          throws TypeMismatch,
                                 InvalidValue
        Extracts the long value from this DynAny. The IDL long long data type is mapped to the Java long data type.
        Specified by:
        get_longlong in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_ulonglong

        public long get_ulonglong()
                           throws TypeMismatch,
                                  InvalidValue
        Extracts the long value from this DynAny. The IDL unsigned long long data type is mapped to the Java long data type.
        Specified by:
        get_ulonglong in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_wchar

        public char get_wchar()
                       throws TypeMismatch,
                              InvalidValue
        Extracts the long value from this DynAny. The IDL wchar data type is mapped to the Java char data type.
        Specified by:
        get_wchar in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_wstring

        public String get_wstring()
                           throws TypeMismatch,
                                  InvalidValue
        Extracts the string value from this DynAny. Both bounded and unbounded strings are extracted using this method.
        Specified by:
        get_wstring in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue
      • get_any

        public Any get_any()
                    throws TypeMismatch,
                           InvalidValue
        Extracts an Any value contained in the Any represented by this DynAny.
        Specified by:
        get_any in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_dyn_any

        public DynAny get_dyn_any()
                           throws TypeMismatch,
                                  InvalidValue
        Extracts the Any value contained in the Any represented by this DynAny and returns it wrapped into a new DynAny.
        Specified by:
        get_dyn_any in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • get_val

        public Serializable get_val()
                             throws TypeMismatch,
                                    InvalidValue
        Extracts a Serializable object from this DynAny. The IDL ValueBase type is mapped to the Java Serializable type.
        Specified by:
        get_val in interface DynAnyOperations
        Throws:
        TypeMismatch - if the accessed component in the DynAny is of a type that is not equivalent to the requested type.
        TypeMismatch - if called on a DynAny whose current component itself has components
        InvalidValue - if this DynAny has components but has a current position of -1
      • seek

        public boolean seek​(int index)
        Sets the current position to index. The current position is indexed 0 to n-1, that is, index zero corresponds to the first component. The operation returns true if the resulting current position indicates a component of the DynAny and false if index indicates a position that does not correspond to a component. Calling seek with a negative index is legal. It sets the current position to -1 to indicate no component and returns false. Passing a non-negative index value for a DynAny that does not have a component at the corresponding position sets the current position to -1 and returns false.
        Specified by:
        seek in interface DynAnyOperations
      • rewind

        public void rewind()
        Is equivalent to seek(0).
        Specified by:
        rewind in interface DynAnyOperations
      • next

        public boolean next()
        Advances the current position to the next component. The operation returns true while the resulting current position indicates a component, false otherwise. A false return value leaves the current position at -1. Invoking next on a DynAny without components leaves the current position at -1 and returns false.
        Specified by:
        next in interface DynAnyOperations
      • component_count

        public int component_count()
        Returns the number of components of a DynAny. For a DynAny without components, it returns zero. The operation only counts the components at the top level. For example, if component_count is invoked on a DynStruct with a single member, the return value is 1, irrespective of the type of the member.
        • For sequences, the operation returns the current number of elements.
        • For structures, exceptions, and value types, the operation returns the number of members.
        • For arrays, the operation returns the number of elements.
        • For unions, the operation returns 2 if the discriminator indicates that a named member is active, otherwise, it returns 1.
        • For DynFixed and DynEnum, the operation returns zero.
        Specified by:
        component_count in interface DynAnyOperations
      • current_component

        public DynAny current_component()
                                 throws TypeMismatch
        Returns the DynAny for the component at the current position. It does not advance the current position, so repeated calls to current_component without an intervening call to rewind, next, or seek return the same component. The returned DynAny object reference can be used to get/set the value of the current component. If the current component represents a complex type, the returned reference can be narrowed based on the TypeCode to get the interface corresponding to the to the complex type. Calling current_component on a DynAny that cannot have components, such as a DynEnum or an empty exception, raises TypeMismatch. Calling current_component on a DynAny whose current position is -1 returns a nil reference. The iteration operations, together with current_component, can be used to dynamically compose an any value. After creating a dynamic any, such as a DynStruct, current_component and next can be used to initialize all the components of the value. Once the dynamic value is completely initialized, to_any creates the corresponding any value.
        Specified by:
        current_component in interface DynAnyOperations
        Throws:
        TypeMismatch - If called on a DynAny that cannot have components, such as a DynEnum or an empty exception