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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/java/beans/encoder/CollectionPersistenceDelegate.java | |
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Diffstat (limited to 'libjava/classpath/gnu/java/beans/encoder/CollectionPersistenceDelegate.java')
-rw-r--r-- | libjava/classpath/gnu/java/beans/encoder/CollectionPersistenceDelegate.java | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/beans/encoder/CollectionPersistenceDelegate.java b/libjava/classpath/gnu/java/beans/encoder/CollectionPersistenceDelegate.java new file mode 100644 index 000000000..bdf6fda62 --- /dev/null +++ b/libjava/classpath/gnu/java/beans/encoder/CollectionPersistenceDelegate.java @@ -0,0 +1,84 @@ +/* CollectionPersistenceDelegate.java - A PersistenceDelegate for Collection subclasses. + 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.java.beans.encoder; + +import java.util.Collection; +import java.beans.Encoder; +import java.beans.Expression; +import java.beans.PersistenceDelegate; +import java.beans.Statement; + +import java.util.Iterator; + +/** <p>A <code>PersistenceDelegate</code> implementation that calls + * the no-argument constructor to create the Collection instance and + * uses an iterator to add all the objects it reaches through it.</p> + * + * <p>It is used for <code>Set</code> and <code>List</code> + * implementations.</p> + * + * @author Robert Schuster (robertschuster@fsfe.org) + */ +public class CollectionPersistenceDelegate extends PersistenceDelegate +{ + + protected Expression instantiate(Object oldInstance, Encoder out) + { + return new Expression( + oldInstance, + oldInstance.getClass(), + "new", + null); + } + + protected void initialize(Class type, Object oldInstance, Object newInstance, + Encoder out) + { + Iterator ite = ((Collection) oldInstance).iterator(); + + while (ite.hasNext()) + { + out.writeStatement(new Statement(oldInstance, "add", + new Object[] { ite.next() })); + + } + + } + +} |