2003-02-13 Michael Koch <konqueror@gmx.de>

	* gnu/java/util/prefs/FileBasedFactory.java,
	gnu/java/util/prefs/MemmoryBasedFactory.java,
	gnu/java/util/prefs/MemoryBasedPreferences.java,
	gnu/java/util/prefs/NodeReader.java,
	gnu/java/util/prefs/NodeWriter.java,
	java/util/prefs/AbstractPreferences.java,
	java/util/prefs/BackingStoreException.java,
	java/util/prefs/InvalidPreferencesFormatException.java,
	java/util/prefs/NodeChangeEvent.java,
	java/util/prefs/NodeChangeListener.java,
	java/util/prefs/PreferenceChangeEvent.java,
	java/util/prefs/PreferenceChangeListener.java,
	java/util/prefs/Preferences.java,
	java/util/prefs/PreferencesFactory.java:
	New files, all merged from classpath.
	* Makefile.am
	(ordinary_java_source_files): Added the following files:
	gnu/java/util/prefs/FileBasedFactory.java,
	gnu/java/util/prefs/MemmoryBasedFactory.java,
	gnu/java/util/prefs/MemoryBasedPreferences.java,
	gnu/java/util/prefs/NodeReader.java,
	gnu/java/util/prefs/NodeWriter.java,
	(core_java_source_files): Added the following files:
	java/util/prefs/AbstractPreferences.java,
	java/util/prefs/BackingStoreException.java,
	java/util/prefs/InvalidPreferencesFormatException.java,
	java/util/prefs/NodeChangeEvent.java,
	java/util/prefs/NodeChangeListener.java,
	java/util/prefs/PreferenceChangeEvent.java,
	java/util/prefs/PreferenceChangeListener.java,
	java/util/prefs/Preferences.java,
	java/util/prefs/PreferencesFactory.java
	* Makefile.in: Regenerated.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@62827 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 144 insertions, 0 deletions

diff --git a/libjava/gnu/java/util/prefs/MemoryBasedPreferences.java b/libjava/gnu/java/util/prefs/MemoryBasedPreferences.java
new file mode 100644
index 00000000000..c1d59c7b1c9
--- /dev/null
+++ b/libjava/gnu/java/util/prefs/MemoryBasedPreferences.java
@@ -0,0 +1,144 @@
+/* MemoryBasedPreferences - A Preference node which holds all entries in memory
+   Copyright (C) 2001 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.util.prefs;
+
+import java.util.HashMap;
+
+import java.util.prefs.*;
+
+/**
+ * A Preference node which holds all entries in memory
+ *
+ * @author Mark Wielaard (mark@klomp.org)
+ */
+public class MemoryBasedPreferences extends AbstractPreferences {
+
+    /** True if this is a preference node in the user tree, false otherwise. */
+    private final boolean isUser;
+
+    /** Contains all the preference entries of this node. */
+    private HashMap entries = new HashMap();
+
+    /**
+     * Creates a new preferences node with the given name and parent.
+     * When isUser is true it will be user node otherwise it will be a system
+     * node. It will always set the <code>newNode</code> field to true
+     * since there is no real backing store, so all nodes are new.
+     */
+    public MemoryBasedPreferences(MemoryBasedPreferences parent,
+                                  String name,
+                                  boolean isUser) {
+        super(parent, name);
+        this.isUser = isUser;
+
+        // Since we do not have a real backing store all nodes are new
+        newNode = true;
+    }
+
+    /**
+     * Returns true if this node was created as a user node.
+     */
+    public boolean isUserNode() {
+        return isUser;
+    }
+
+    /**
+     * Returns an empty array since all children names are always already
+     * chached.
+     */
+    protected String[] childrenNamesSpi() throws BackingStoreException {
+        return new String[0];
+    }
+
+    /**
+     * Returns a new node with the given name with as parent this node and
+     * with the <code>isUser</code> flag set to the same value as this node.
+     */
+    protected AbstractPreferences childSpi(String childName) {
+       return new MemoryBasedPreferences(this, childName, isUser);
+    }
+
+    /**
+     * Returns a (possibly empty) array of keys of the preferences entries of
+     * this node.
+     */
+    protected String[] keysSpi() throws BackingStoreException {
+        return (String[]) entries.keySet().toArray(new String[entries.size()]);
+    }
+
+    /**
+     * Returns the associated value from this nodes preferences entries or
+     * null when the key has not been set.
+     */
+    protected String getSpi(String key) {
+        return (String) entries.get(key);
+    }
+
+    /**
+     * Sets the value for the given key.
+     */
+    protected void putSpi(String key, String value) {
+        entries.put(key, value);
+    }
+
+    /**
+     * Removes the entry with the given key.
+     */
+    protected void removeSpi(String key) {
+        entries.remove(key);
+    }
+
+    /**
+     * Does nothing since we do not have any backing store.
+     */
+    protected void flushSpi() {
+    }
+
+    /**
+     * Does nothing since we do not have any backing store.
+     */
+    protected void syncSpi() {
+    }
+
+    /**
+     * Just removes the entries map of this node.
+     */
+    protected void removeNodeSpi() {
+        entries = null;
+    }
+}