--- /dev/null	Fri Jul 20 13:01:06 2012
+++ new/src/share/classes/sun/util/locale/provider/AuxLocaleProviderAdapter.java	Fri Jul 20 13:01:04 2012
@@ -0,0 +1,180 @@
+/*
+ * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.util.locale.provider;
+
+import java.text.spi.BreakIteratorProvider;
+import java.text.spi.CollatorProvider;
+import java.text.spi.DateFormatProvider;
+import java.text.spi.DateFormatSymbolsProvider;
+import java.text.spi.DecimalFormatSymbolsProvider;
+import java.text.spi.NumberFormatProvider;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Locale;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import java.util.spi.CalendarDataProvider;
+import java.util.spi.CurrencyNameProvider;
+import java.util.spi.LocaleNameProvider;
+import java.util.spi.LocaleServiceProvider;
+import java.util.spi.TimeZoneNameProvider;
+import sun.util.resources.LocaleData;
+
+/**
+ * An abstract parent class for the
+ * HostLocaleProviderAdapter/SPILocaleProviderAdapter.
+ *
+ * @author Naoto Sato
+ * @author Masayoshi Okutsu
+ */
+public abstract class AuxLocaleProviderAdapter extends LocaleProviderAdapter {
+    /**
+     * SPI implementations map
+     */
+    private ConcurrentMap<Class<? extends LocaleServiceProvider>, LocaleServiceProvider> providersMap =
+            new ConcurrentHashMap<>();
+
+    /**
+     * Getter method for Locale Service Providers
+     */
+    @Override
+    public <P extends LocaleServiceProvider> P getLocaleServiceProvider(Class<P> c) {
+        @SuppressWarnings("unchecked")
+        P lsp = (P) providersMap.get(c);
+        if (lsp == null) {
+            lsp = findInstalledProvider(c);
+            providersMap.putIfAbsent(c, lsp == null ? NULL_PROVIDER : lsp);
+        }
+
+        return lsp;
+    }
+
+    /**
+     * Real body to find an implementation for each SPI.
+     *
+     * @param <P>
+     * @param c
+     * @return
+     */
+    protected abstract <P extends LocaleServiceProvider> P findInstalledProvider(final Class<P> c);
+
+    @Override
+    public BreakIteratorProvider getBreakIteratorProvider() {
+        return getLocaleServiceProvider(BreakIteratorProvider.class);
+    }
+
+    @Override
+    public CollatorProvider getCollatorProvider() {
+        return getLocaleServiceProvider(CollatorProvider.class);
+    }
+
+    @Override
+    public DateFormatProvider getDateFormatProvider() {
+        return getLocaleServiceProvider(DateFormatProvider.class);
+    }
+
+    @Override
+    public DateFormatSymbolsProvider getDateFormatSymbolsProvider() {
+        return getLocaleServiceProvider(DateFormatSymbolsProvider.class);
+    }
+
+    @Override
+    public DecimalFormatSymbolsProvider getDecimalFormatSymbolsProvider() {
+        return getLocaleServiceProvider(DecimalFormatSymbolsProvider.class);
+    }
+
+    @Override
+    public NumberFormatProvider getNumberFormatProvider() {
+        return getLocaleServiceProvider(NumberFormatProvider.class);
+    }
+
+    /**
+     * Getter methods for java.util.spi.* providers
+     */
+    @Override
+    public CurrencyNameProvider getCurrencyNameProvider() {
+        return getLocaleServiceProvider(CurrencyNameProvider.class);
+    }
+
+    @Override
+    public LocaleNameProvider getLocaleNameProvider() {
+        return getLocaleServiceProvider(LocaleNameProvider.class);
+    }
+
+    @Override
+    public TimeZoneNameProvider getTimeZoneNameProvider() {
+        return getLocaleServiceProvider(TimeZoneNameProvider.class);
+    }
+
+    @Override
+    public CalendarDataProvider getCalendarDataProvider() {
+        return getLocaleServiceProvider(CalendarDataProvider.class);
+    }
+
+
+    @Override
+    public LocaleResources getLocaleResources(Locale locale) {
+        return null;
+    }
+
+    @Override
+    public LocaleData getLocaleData() {
+        return null;
+    }
+
+    private static Locale[] availableLocales = null;
+
+    @Override
+    public Locale[] getAvailableLocales() {
+        if (availableLocales == null) {
+            Set<Locale> avail = new HashSet<>();
+            for (Class<? extends LocaleServiceProvider> c :
+                    LocaleServiceProviderPool.spiClasses) {
+                LocaleServiceProvider lsp = getLocaleServiceProvider(c);
+                if (lsp != null) {
+                    avail.addAll(Arrays.asList(lsp.getAvailableLocales()));
+                }
+            }
+            availableLocales = avail.toArray(new Locale[0]);
+        }
+
+        // assuming caller won't mutate the array.
+        return availableLocales;
+    }
+
+    /**
+     * A dummy locale service provider that indicates there is no
+     * provider available
+     */
+    private static NullProvider NULL_PROVIDER = new NullProvider();
+    private static class NullProvider extends LocaleServiceProvider {
+        @Override
+        public Locale[] getAvailableLocales() {
+            return new Locale[0];
+        }
+    }
+}