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+/* StringHolder.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.CORBA;
+
+import gnu.CORBA.typecodes.StringTypeCode;
+
+import org.omg.CORBA.portable.InputStream;
+import org.omg.CORBA.portable.OutputStream;
+import org.omg.CORBA.portable.Streamable;
+
+/**
+ * A holder for CORBA <code>string</code> that is mapped into
+ * java <code>String</code>.
+ *
+ * The holders have several application areas. The end user usually
+ * sees them implementing CORBA methods where the primitive type
+ * is passed by reference. While CORBA (or, for example, C) supports
+ * this, the java does not and a wrapper class is required.
+ *
+ * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
+ */
+public final class StringHolder
+  implements Streamable
+{
+  /**
+   * The default type code for this holder.
+   */
+  private static final StringTypeCode t_string =
+    new StringTypeCode(TCKind.tk_string);
+
+  /**
+   * The <code>String</code> (CORBA <code>string</code>) value,
+   * held by this StringHolder.
+   */
+  public String value;
+
+  /**
+   * Constructs an instance of StringHolder,
+   * initializing {@link #value} to <code>null</code>.
+   */
+  public StringHolder()
+  {
+  }
+
+  /**
+   * Constructs an instance of StringHolder,
+   * initializing {@link #value} to the given <code>String</code>.
+   *
+   * @param initial_value a value that will be assigned to the
+   * {@link #value} field.
+   */
+  public StringHolder(String initial_value)
+  {
+    value = initial_value;
+  }
+
+  /**
+   * Fill in the {@link #value } field by reading the required data
+   * from the given stream. For <code>string</code>, the functionality
+   * is delegated to
+   * {@link org.omg.CORBA.portable.InputStream#read_string}.
+   *
+   * @param input the input stream to read from.
+   */
+  public void _read(InputStream input)
+  {
+    value = input.read_string();
+  }
+
+  /**
+   * Returns the TypeCode, corresponding the CORBA type that is stored
+   * using this holder. The {@link TypeCode#length()} method of the
+   * returned typecode always returns 0.
+   */
+  public TypeCode _type()
+  {
+    return t_string;
+  }
+
+  /**
+   * Write the {@link #value } field to the given stream.
+   * For <code>string</code>, the functionality
+   * is delegated to
+   * {@link org.omg.CORBA.portable.OutputStream#write_string(String) }.
+   *
+   * @param output the output stream to write into.
+   */
+  public void _write(OutputStream output)
+  {
+    output.write_string(value);
+  }
+}