2005-08-02 Andrew John Hughes <gnu_andrew@member.fsf.org>

	* Merge of HEAD --> generics-branch for 2005/06/05 - 2005/07/31.

	See patch on classpath-patches@gnu.org for a full ChangeLog.

1 files changed, 139 insertions, 0 deletions

diff --git a/org/omg/DynamicAny/DynUnionOperations.java b/org/omg/DynamicAny/DynUnionOperations.java
new file mode 100644
index 000000000..0a35bc9c7
--- /dev/null
+++ b/org/omg/DynamicAny/DynUnionOperations.java
@@ -0,0 +1,139 @@
+/* DynUnionOperations.java --
+   Copyright (C) 2005 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package org.omg.DynamicAny;
+
+import org.omg.CORBA.TCKind;
+import org.omg.DynamicAny.DynAnyPackage.InvalidValue;
+import org.omg.DynamicAny.DynAnyPackage.TypeMismatch;
+
+/**
+ * Defines the operations, applicable to the DynUnion. The DynUnion has only two
+ * valid positions:
+ * <ul>
+ * <li>0 - contains the discriminator of the union. The discriminator defines,
+ * which of the union variants is currently active.</li>
+ * <li>1 - contains the currently active variant of the union content (a union
+ * member). </li>
+ * </ul>
+ * 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.
+ *
+ * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
+ */
+public interface DynUnionOperations
+{
+  /**
+   * Get the value of discriminator, defining which content variant (member) is
+   * active.
+   */
+  DynAny get_discriminator();
+
+  /**
+   * 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.
+   *
+   * @throws TypeMismatch if the discriminator has a wrong type of this union.
+   */
+  void set_discriminator(DynAny aDiscriminator) throws TypeMismatch;
+
+  /**
+   * Get the kind of the union descriminator.
+   *
+   * @return the TCKind value of the discriminator typecode.
+   */
+  TCKind discriminator_kind();
+
+  /**
+   * Get the current variant of the union content.
+   *
+   * @return the current member of the union. This reference is only valid as
+   * long as the current member does not change.
+   *
+   * @throws InvalidValue if the union has no active member.
+   */
+  DynAny member() throws InvalidValue;
+
+  /**
+   * Returns the kind of the currently active union member.
+   *
+   * @return the TCKind value of the union member.
+   *
+   * @throws InvalidValue if the union has no active member.
+   */
+  TCKind member_kind() throws InvalidValue;
+
+  /**
+   * Returns the name of the currently active union member.
+   *
+   * @return the TCKind value of the union member.
+   *
+   * @throws InvalidValue if the union has no active member.
+   */
+  String member_name() throws InvalidValue;
+
+  /**
+   * 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.
+   */
+  boolean has_no_active_member();
+
+  /**
+   * 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.
+   *
+   * @throws TypeMismatch if the default case is not defined for this union.
+   */
+  void set_to_default_member() throws TypeMismatch;
+
+  /**
+   * Set the discriminator to value that does not correspond any content variant
+   * (any union <code>case</code> label). The current position is set to 0.
+   * The size of the union becomes 0.
+   *
+   * @throws TypeMismatch if the union has explicit default case.
+   */
+  void set_to_no_active_member() throws TypeMismatch;
+}
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