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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/CORBA/CDR/IDLTypeHelper.java | |
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Diffstat (limited to 'libjava/classpath/gnu/CORBA/CDR/IDLTypeHelper.java')
-rw-r--r-- | libjava/classpath/gnu/CORBA/CDR/IDLTypeHelper.java | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/CORBA/CDR/IDLTypeHelper.java b/libjava/classpath/gnu/CORBA/CDR/IDLTypeHelper.java new file mode 100644 index 000000000..663e04196 --- /dev/null +++ b/libjava/classpath/gnu/CORBA/CDR/IDLTypeHelper.java @@ -0,0 +1,169 @@ +/* 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 gnu.CORBA.CDR; + +import gnu.CORBA.Minor; + +import org.omg.CORBA.MARSHAL; +import org.omg.CORBA.portable.BoxedValueHelper; +import org.omg.CORBA.portable.InputStream; +import org.omg.CORBA.portable.OutputStream; + +import java.io.Serializable; +import java.lang.reflect.Method; +import java.lang.reflect.Modifier; + +/** + * Handles case when the CORBA IDL type with the known helper is wrapped into + * Value type. + * + * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) + */ +public class IDLTypeHelper + implements BoxedValueHelper +{ + /** + * A helper class. + */ + protected Class helper; + + /** + * Argument values for Helper.id(). + */ + static final Object[] ARGS_ID_V = new Object[0]; + + /** + * Argument types for Helper.id()). + */ + static final Class[] ARGS_ID = new Class[0]; + + /** + * Argument types for Helper.read. + */ + static final Class[] ARGS_READ = new Class[] { org.omg.CORBA.portable.InputStream.class }; + + /** + * Create an IDLTypeHelper that works via given helper class. + */ + public IDLTypeHelper(Class a_helperClass) + { + helper = a_helperClass; + } + + /** + * Get the Id, returned by this helper (use reflection). + */ + public String get_id() + { + try + { + Method m = helper.getMethod("id", ARGS_ID); + return (String) m.invoke(null, ARGS_ID_V); + } + catch (Exception ex) + { + MARSHAL m = new MARSHAL(msg() + " id()"); + m.minor = Minor.Boxed; + m.initCause(ex); + throw m; + } + } + + /** + * Read an instance from the stream. + */ + public Serializable read_value(InputStream input) + { + try + { + Method m = helper.getMethod("read", ARGS_READ); + return (Serializable) m.invoke(null, new Object[] { input }); + } + catch (Exception ex) + { + MARSHAL m = new MARSHAL(msg() + " read(..)"); + m.minor = Minor.Boxed; + m.initCause(ex); + throw m; + } + } + + /** + * Write the instance to the stream. + */ + public void write_value(OutputStream output, Serializable value) + { + try + { + Method[] m = helper.getMethods(); + + for (int i = 0; i < m.length; i++) + { + if (m[i].getName().equals("write") + && ((m[i].getModifiers() & Modifier.STATIC) != 0)) + { + Class[] p = m[i].getParameterTypes(); + + if (p.length == 2 && OutputStream.class.isAssignableFrom(p[0]) + && p[1].isAssignableFrom(value.getClass())) + { + m[i].invoke(null, new Object[] { output, value }); + return; + } + } + } + } + catch (Exception ex) + { + MARSHAL m = new MARSHAL(msg() + " write(..)"); + m.minor = Minor.Boxed; + m.initCause(ex); + throw m; + } + } + + /** + * Create the start of message for exceptions. + */ + String msg() + { + return "Failed calling " + helper.getName() + " method: "; + } + +} |