feat(jdk8): move files to new folder to avoid resources compiled.

jdkSrc/jdk8/com/sun/tools/internal/xjc/reader/Ring.java

@@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 1997, 2011, 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 com.sun.tools.internal.xjc.reader;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.util.HashMap;
+import java.util.Map;
+
+import com.sun.tools.internal.xjc.ErrorReceiver;
+import com.sun.tools.internal.xjc.model.Model;
+
+/**
+ * Holds all the binding related singleton components in a "ring",
+ * and let you access those components, creating them as necessary.
+ *
+ * <p>
+ * A {@link Ring} is local to a thread,
+ * and only one instanceof {@link Ring} can be active at any given time.
+ *
+ * Use {@link #begin()} and {@link #end(Ring)} to start/end a ring scope.
+ * Inside a scope, use {@link #get()} to obtain the instance.
+ *
+ * <p>
+ * When a {@link Model} is built by the reader, an active {@link Ring} scope
+ * is assumed.
+ *
+ *
+ * <h2>Components in Ring</h2>
+ * <p>
+ * Depending on the schema language we are dealing with, different
+ * components are in the model. But at least the following components
+ * are in the ring.
+ *
+ * <ul>
+ *  <li>{@link ErrorReceiver}
+ * </ul>
+ *
+ * @author Kohsuke Kawaguchi
+ */
+public final class Ring {
+
+    private final Map<Class,Object> components = new HashMap<Class,Object>();
+
+    private static final ThreadLocal<Ring> instances = new ThreadLocal<Ring>();
+
+    private Ring() {}
+
+    public static <T> void add( Class<T> clazz, T instance ) {
+        assert !get().components.containsKey(clazz);
+        get().components.put(clazz,instance);
+    }
+
+    public static <T> void add( T o ) {
+        add((Class<T>)o.getClass(),o);
+    }
+
+    public static <T> T get( Class<T> key ) {
+        T t = (T)get().components.get(key);
+        if(t==null) {
+            try {
+                Constructor<T> c = key.getDeclaredConstructor();
+                c.setAccessible(true);
+                t = c.newInstance();
+                if(!get().components.containsKey(key))
+                    // many components register themselves.
+                    add(key,t);
+            } catch (InstantiationException e) {
+                throw new Error(e);
+            } catch (IllegalAccessException e) {
+                throw new Error(e);
+            } catch (NoSuchMethodException e) {
+                throw new Error(e);
+            } catch (InvocationTargetException e) {
+                throw new Error(e);
+            }
+        }
+
+        assert t!=null;
+        return t;
+    }
+
+    /**
+     * A {@link Ring} instance is associated with a thread.
+     */
+    public static Ring get() {
+        return instances.get();
+    }
+
+    /**
+     * Starts a new scope.
+     */
+    public static Ring begin() {
+        Ring r = null;
+        synchronized (instances) {
+            r = instances.get();
+            instances.set(new Ring());
+        }
+        return r;
+    }
+
+    /**
+     * Ends a scope.
+     */
+    public static void end(Ring old) {
+        synchronized (instances) {
+            instances.remove();
+            instances.set(old);
+        }
+    }
+}