194 lines
5.4 KiB
Java
194 lines
5.4 KiB
Java
/* WStringValueHelper.java --
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package org.omg.CORBA;
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import gnu.CORBA.Minor;
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import gnu.CORBA.OrbRestricted;
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import org.omg.CORBA.portable.BoxedValueHelper;
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import org.omg.CORBA.portable.InputStream;
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import org.omg.CORBA.portable.OutputStream;
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import java.io.Serializable;
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/**
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* Provides helper operations for the Wide String value type, treating a
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* Wide String as a CORBA value type rather than as a primitive type. The OMG
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* specification states this may be convenient in some specific
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* cases. The typecode is different, but the reading/writing format in
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* this implementation is the same as for the ordinary wide string. This is
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* that Sun's IDL compiler (v1.4) would generate.
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*
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* @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
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*/
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public class WStringValueHelper
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implements BoxedValueHelper
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{
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/**
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* The Wide String value helper repository Id.
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*/
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private static final String id = "IDL:omg.org/CORBA/WStringValue:1.0";
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/**
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* The Wide String typecode.
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*/
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private static final TypeCode twString =
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OrbRestricted.Singleton.create_wstring_tc(0);
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/**
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* Returns the String Value repository Id.
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* @return "IDL:omg.org/CORBA/WStringValue:1.0", always.
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*/
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public String get_id()
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{
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return id;
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}
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/**
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* Returns the String Value repository Id.
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* @return "IDL:omg.org/CORBA/WStringValue:1.0", always.
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*/
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public static String id()
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{
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return id;
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}
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/**
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* Read the wide string value from the input stream.
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*
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* @param istream a stream to read from.
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*
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* @return a string (delegates to read_wstring()).
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*/
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public Serializable read_value(InputStream istream)
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{
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return istream.read_wstring();
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}
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/**
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* Write the given wide string value into the output stream.
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*
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* @param ostream a stream to write into.
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* @param a_string a string to write.
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*/
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public void write_value(OutputStream ostream, Serializable a_string)
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{
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try
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{
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ostream.write_wstring((String) a_string);
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}
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catch (ClassCastException ex)
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{
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MARSHAL m = new MARSHAL("String expected");
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m.minor = Minor.ClassCast;
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throw m;
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}
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}
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/**
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* Extract the wide string from the given Any. The operation
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* requires Any to hold a String value and not a String.
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*
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* @param an_any an Any to extract from.
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*
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* @return the extracted string.
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*/
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public static String extract(Any an_any)
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{
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if (an_any.type().equal(type()))
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{
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an_any.type(twString);
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return an_any.extract_wstring();
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}
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else
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{
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BAD_OPERATION bad = new BAD_OPERATION("WString value type expected");
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bad.minor = Minor.Any;
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throw bad;
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}
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}
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/**
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* Insert the wide string into the given Any. After the operation,
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* the Any will have a Wide String Value typecode and not a
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* String or WString typecode.
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*
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* @param an_any an Any to insert into.
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*
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* @param that a string to insert.
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*/
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public static void insert(Any an_any, String that)
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{
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an_any.insert_wstring(that);
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an_any.type(type());
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}
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/**
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* Reads a wide string as a value type.
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*
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* @param in a stream to read value from.
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*/
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public static String read(InputStream in)
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{
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return in.read_wstring();
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}
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/**
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* Create and return the value box typecode, named "WStringValue", with the
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* content typecode being unbounded string.
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*/
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public static TypeCode type()
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{
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ORB orb = OrbRestricted.Singleton;
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return orb.create_value_box_tc(id(), "WStringValue", twString);
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}
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/**
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* Writes a wide string as a value type.
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*
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* @param out a stream to write value into.
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*
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* @param a_string a string to write.
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*/
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public static void write(OutputStream out, String a_string)
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{
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out.write_wstring(a_string);
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}
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}
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