org.omg.DynamicAny
Interface DynUnionOperations
- DynAnyOperations
- DynUnion
- gnuDynUnion, _DynUnionStub
Defines the operations, applicable to the DynUnion. The DynUnion has only two
valid positions:
- 0 - contains the discriminator of the union. The discriminator defines,
which of the union variants is currently active.
- 1 - contains the currently active variant of the union content (a union
member).
The size of the union is normally 2. If the discriminator value defines no
valid variant, the union consists of discriminator only, having the size 1.
assign, component_count, copy, current_component, destroy, equal, from_any, get_any, get_boolean, get_char, get_double, get_dyn_any, get_float, get_long, get_longlong, get_octet, get_reference, get_short, get_string, get_typecode, get_ulong, get_ulonglong, get_ushort, get_val, get_wchar, get_wstring, insert_any, insert_boolean, insert_char, insert_double, insert_dyn_any, insert_float, insert_long, insert_longlong, insert_octet, insert_reference, insert_short, insert_string, insert_typecode, insert_ulong, insert_ulonglong, insert_ushort, insert_val, insert_wchar, insert_wstring, next, rewind, seek, to_any, type |
discriminator_kind
public TCKind discriminator_kind()
Get the kind of the union descriminator.
- the TCKind value of the discriminator typecode.
get_discriminator
public DynAny get_discriminator()
Get the value of discriminator, defining which content variant
(member) is active.
In the current implementation, the later changes on the returned value
alter the state of the union via implemented internal listener.
has_no_active_member
public boolean has_no_active_member()
Returns true if the union has no active member. This happens if If the
discriminator value defines no valid variant. Such union consists of
discriminator only, having the size 1.
member
public DynAny member()
throws InvalidValue Get the current variant of the union content.
- the current member of the union. This reference is only valid as
long as the current member does not change.
member_kind
public TCKind member_kind()
throws InvalidValue Returns the kind of the currently active union member.
- the TCKind value of the union member.
member_name
public String member_name()
throws InvalidValue Returns the name of the currently active union member.
- the TCKind value of the union member.
set_discriminator
public void set_discriminator(DynAny aDiscriminator)
throws TypeMismatch Set the value of discriminator, activating the member variant that is
consistent with the discriminator value. If the current member variant
matches the discriminator being set, it is unchanged. Otherwise, it is
replaced by the matching member variant with fields, initialised to default
values. The current position is set to 0 if the discriminator value does
not match any member variant. Otherwise, the current position is set to 1,
index of the member variant.
TypeMismatch - if the discriminator has a wrong type of this union.
set_to_default_member
public void set_to_default_member()
throws TypeMismatch Set the discriminator to default value. The current position is set to 0.
This also sets the content variant to the default variant, and the size of
the union becomes 2.
TypeMismatch - if the default case is not defined for this union.
set_to_no_active_member
public void set_to_no_active_member()
throws TypeMismatch Set the discriminator to value that does not correspond any content variant
(any union case label). The current position is set to 0.
The size of the union becomes 0.
DynUnionOperations.java --
Copyright (C) 2005 Free Software Foundation, Inc.
This file is part of GNU Classpath.
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