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Diffstat (limited to 'org/omg/CORBA/IDLTypeHelper.java')
| -rw-r--r-- | org/omg/CORBA/IDLTypeHelper.java | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/org/omg/CORBA/IDLTypeHelper.java b/org/omg/CORBA/IDLTypeHelper.java new file mode 100644 index 000000000..d9ca36496 --- /dev/null +++ b/org/omg/CORBA/IDLTypeHelper.java @@ -0,0 +1,139 @@ +/* IDLTypeHelper.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 org.omg.CORBA.portable.Delegate; +import org.omg.CORBA.portable.InputStream; +import org.omg.CORBA.portable.ObjectImpl; +import org.omg.CORBA.portable.OutputStream; + +/** + * A helper operations for the IDL type. + * + * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) + */ +public abstract class IDLTypeHelper +{ + /** + * The cached typecode value, computed once. + */ + private static TypeCode typeCode; + + /** + * Insert the IDL type into the given Any. + */ + public static void insert(Any a, IDLType that) + { + OutputStream out = a.create_output_stream(); + a.type(type()); + write(out, that); + a.read_value(out.create_input_stream(), type()); + } + + /** + * Extract the IDL type from the given Any. + */ + public static IDLType extract(Any a) + { + return read(a.create_input_stream()); + } + + /** + * Get the typecode of the IDL type (the interface typecode, name "IDLType"). + */ + public static TypeCode type() + { + if (typeCode == null) + { + typeCode = + Restricted_ORB.Singleton.create_interface_tc(IDLTypeHelper.id(), + "IDLType" + ); + } + return typeCode; + } + + /** + * Return the IDLType repository id. + * + * @return "IDL:omg.org/CORBA/IDLType:1.0", always. + */ + public static String id() + { + return "IDL:omg.org/CORBA/IDLType:1.0"; + } + + /** + * Read the IDL type from the given input stream. + * The method reads an object and narrows into IDL type using this + * helper. + */ + public static IDLType read(InputStream istream) + { + return narrow(istream.read_Object()); + } + + /** + * Write the IDL type to the output stream (as CORBA object). + */ + public static void write(OutputStream ostream, IDLType value) + { + ostream.write_Object((org.omg.CORBA.Object) value); + } + + /** + * Narrows the CORBA object into the IDL type. + */ + public static IDLType narrow(org.omg.CORBA.Object obj) + { + if (obj == null) + return null; + else if (obj instanceof IDLType) + return (IDLType) obj; + else if (!obj._is_a(id())) + throw new org.omg.CORBA.BAD_PARAM(); + else + { + Delegate delegate = ((ObjectImpl) obj)._get_delegate(); + return new _IDLTypeStub(delegate); + } + } +}
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