Imported GNU Classpath 0.20
Imported GNU Classpath 0.20
* Makefile.am (AM_CPPFLAGS): Add classpath/include.
* java/nio/charset/spi/CharsetProvider.java: New override file.
* java/security/Security.java: Likewise.
* sources.am: Regenerated.
* Makefile.in: Likewise.
From-SVN: r109831
This commit is contained in:
Mark Wielaard
@@ -0,0 +1,153 @@
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/* ArrayPersistenceDelegate.java - A PersistenceDelegate that handles arrays.
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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 gnu.java.beans.encoder;
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import java.beans.Encoder;
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import java.beans.Expression;
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import java.beans.PersistenceDelegate;
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import java.beans.Statement;
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import java.lang.reflect.Array;
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import java.util.HashMap;
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public class ArrayPersistenceDelegate extends PersistenceDelegate
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{
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private static final HashMap NULL_VALUES = new HashMap();
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static
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{
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NULL_VALUES.put(Boolean.TYPE, Boolean.FALSE);
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NULL_VALUES.put(Byte.TYPE, Byte.valueOf((byte) 0));
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NULL_VALUES.put(Short.TYPE, Short.valueOf((short) 0));
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NULL_VALUES.put(Integer.TYPE, Integer.valueOf(0));
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NULL_VALUES.put(Long.TYPE, Long.valueOf(0));
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NULL_VALUES.put(Float.TYPE, Float.valueOf(0.0f));
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NULL_VALUES.put(Double.TYPE, Double.valueOf(0.0));
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}
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protected Expression instantiate(Object oldInstance, Encoder out)
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{
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Class type = oldInstance.getClass().getComponentType();
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// oldInstance is expected to be an array, then
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// getClass().getComponentType() should lead
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// to its component type.
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assert (type != null);
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// Not handling primitive types in a special way here
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// causes that Class.forName("int") is built as an Expression
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// later which would cause an exception if executed. A special
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// handling to avoid the execution for primitive types can be
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// java.beans.Encoder.writeExpression() .
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return new Expression(
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oldInstance,
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Array.class,
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"newInstance",
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new Object[] {
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type,
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new Integer(Array.getLength(oldInstance)) });
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}
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protected void initialize(Class type, Object oldInstance, Object newInstance,
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Encoder out)
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{
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int length = Array.getLength(oldInstance);
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// Compares the array value against a prototypical
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// null value of the array's component type in order to skip
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// writing the default values of an array.
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// Note: I have no idea why the persistence delegate for arrays writes
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// an Expression that reads the value and then writes a Statement that sets
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// the value. However it turned out that object arrays work better with the
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// get-Expression and primitive array work fine with the set-Statement.
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type = type.getComponentType();
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if (type.isPrimitive())
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{
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Object nullValue = NULL_VALUES.get(type);
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for (int i = 0; i < length; i++)
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{
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Object oldValue = Array.get(oldInstance, i);
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if (!oldValue.equals(nullValue))
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{
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out.writeExpression(new Expression(Array.class, "get",
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new Object[] { oldInstance,
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Integer.valueOf(i),
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}));
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out.writeStatement(new Statement(Array.class, "set",
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new Object[] {
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oldInstance,
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Integer.valueOf(i),
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oldValue
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}));
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}
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}
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}
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else
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{
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for (int i = 0; i < length; i++)
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{
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Object oldValue = Array.get(oldInstance, i);
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if (oldValue != null)
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{
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out.writeExpression(new Expression(Array.class, "get",
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new Object[] { oldInstance,
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Integer.valueOf(i),
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}));
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out.writeStatement(new Statement(Array.class, "set",
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new Object[] {
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oldInstance,
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Integer.valueOf(i),
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oldValue
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}));
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}
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}
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}
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}
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}
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