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Diffstat (limited to 'libjava/classpath/org/omg/CORBA/WStringValueHelper.java')
| -rw-r--r-- | libjava/classpath/org/omg/CORBA/WStringValueHelper.java | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/libjava/classpath/org/omg/CORBA/WStringValueHelper.java b/libjava/classpath/org/omg/CORBA/WStringValueHelper.java new file mode 100644 index 00000000000..7748a6c782d --- /dev/null +++ b/libjava/classpath/org/omg/CORBA/WStringValueHelper.java @@ -0,0 +1,198 @@ +/* WStringValueHelper.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.Restricted_ORB; +import gnu.CORBA.gnuAny; + +import org.omg.CORBA.TypeCodePackage.BadKind; +import org.omg.CORBA.portable.BoxedValueHelper; +import org.omg.CORBA.portable.InputStream; +import org.omg.CORBA.portable.OutputStream; + +import java.io.Serializable; + +/** + * Provides helper operations for the Wide String value type, treating a + * Wide String as a CORBA value type rather than as a primitive type. The OMG + * specification states this may be convenient in some specific + * cases. The typecode is different, but the reading/writing format in + * this implementation is the same as for the ordinary wide string. This is + * that Sun's IDL compiler (v1.4) would generate. + * + * @author Audrius Meskauskas (AudriusA@Bioinformatics.org) + */ +public class WStringValueHelper + implements BoxedValueHelper +{ + /** + * The Wide String value helper repository Id. + */ + private static final String id = "IDL:omg.org/CORBA/WStringValue:1.0"; + + /** + * The cached typecode value, computed once. + */ + private static TypeCode typecode; + + /** + * The Wide String typecode. + */ + private static final TypeCode twString = + Restricted_ORB.Singleton.create_wstring_tc(0); + + /** + * Returns the String Value repository Id. + * @return "IDL:omg.org/CORBA/WStringValue:1.0", always. + */ + public String get_id() + { + return id; + } + + /** + * Returns the String Value repository Id. + * @return "IDL:omg.org/CORBA/WStringValue:1.0", always. + */ + public static String id() + { + return id; + } + + /** + * Read the wide string value from the input stream. + * + * @param istream a stream to read from. + * + * @return a string (delegates to read_wstring()). + */ + public Serializable read_value(InputStream istream) + { + return istream.read_wstring(); + } + + /** + * Write the given wide string value into the output stream. + * + * @param ostream a stream to write into. + * @param a_string a string to write. + */ + public void write_value(OutputStream ostream, Serializable a_string) + { + try + { + ostream.write_wstring((String) a_string); + } + catch (ClassCastException ex) + { + throw new MARSHAL("String expected"); + } + } + + /** + * Extract the wide string from the given Any. The operation + * requires Any to hold a String value and not a String. + * + * @param an_any an Any to extract from. + * + * @return the extracted string. + */ + public static String extract(Any an_any) + { + if (an_any.type().equal(type())) + { + an_any.type(twString); + return an_any.extract_wstring(); + } + else + throw new BAD_OPERATION("Contains not a wide string value type"); + } + + /** + * Insert the wide string into the given Any. After the operation, + * the Any will have a Wide String Value typecode and not a + * String or WString typecode. + * + * @param an_any an Any to insert into. + * + * @param that a string to insert. + */ + public static void insert(Any an_any, String that) + { + an_any.insert_wstring(that); + an_any.type(type()); + } + + /** + * Reads a wide string as a value type. + * + * @param in a stream to read value from. + */ + public static String read(InputStream in) + { + return in.read_wstring(); + } + + /** + * Create and return the value box typecode, named "WStringValue", + * with the content typecode being unbounded string. + */ + public static TypeCode type() + { + if (typecode == null) + { + ORB orb = Restricted_ORB.Singleton; + typecode = + orb.create_value_box_tc(id(), "WStringValue", twString); + } + return typecode; + } + + /** + * Writes a wide string as a value type. + * + * @param out a stream to write value into. + * + * @param a_string a string to write. + */ + public static void write(OutputStream out, String a_string) + { + out.write_wstring(a_string); + } +}
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