4058433: RFE: tool for creating BeanInfo template

Reviewed-by: alexsch, serb

jdk/src/share/classes/com/sun/beans/introspect/ClassInfo.java

@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2014, 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.beans.introspect;
+
+import com.sun.beans.util.Cache;
+
+import java.lang.reflect.Method;
+import java.util.List;
+import java.util.Map;
+
+import static sun.reflect.misc.ReflectUtil.checkPackageAccess;
+
+public final class ClassInfo {
+    private static final ClassInfo DEFAULT = new ClassInfo(null);
+    private static final Cache<Class<?>,ClassInfo> CACHE
+            = new Cache<Class<?>,ClassInfo>(Cache.Kind.SOFT, Cache.Kind.SOFT) {
+        @Override
+        public ClassInfo create(Class<?> type) {
+            return new ClassInfo(type);
+        }
+    };
+
+    public static ClassInfo get(Class<?> type) {
+        if (type == null) {
+            return DEFAULT;
+        }
+        try {
+            checkPackageAccess(type);
+            return CACHE.get(type);
+        } catch (SecurityException exception) {
+            return DEFAULT;
+        }
+    }
+
+    private final Object mutex = new Object();
+    private final Class<?> type;
+    private List<Method> methods;
+    private Map<String,PropertyInfo> properties;
+    private Map<String,EventSetInfo> eventSets;
+
+    private ClassInfo(Class<?> type) {
+        this.type = type;
+    }
+
+    public List<Method> getMethods() {
+        if (this.methods == null) {
+            synchronized (this.mutex) {
+                if (this.methods == null) {
+                    this.methods = MethodInfo.get(this.type);
+                }
+            }
+        }
+        return this.methods;
+    }
+
+    public Map<String,PropertyInfo> getProperties() {
+        if (this.properties == null) {
+            synchronized (this.mutex) {
+                if (this.properties == null) {
+                    this.properties = PropertyInfo.get(this.type);
+                }
+            }
+        }
+        return this.properties;
+    }
+
+    public Map<String,EventSetInfo> getEventSets() {
+        if (this.eventSets == null) {
+            synchronized (this.mutex) {
+                if (this.eventSets == null) {
+                    this.eventSets = EventSetInfo.get(this.type);
+                }
+            }
+        }
+        return this.eventSets;
+    }
+}

jdk/src/share/classes/com/sun/beans/introspect/EventSetInfo.java

@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2014, 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.beans.introspect;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.util.Collections;
+import java.util.EventListener;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.TooManyListenersException;
+import java.util.TreeMap;
+
+public final class EventSetInfo {
+    private MethodInfo add;
+    private MethodInfo remove;
+    private MethodInfo get;
+
+    private EventSetInfo() {
+    }
+
+    private boolean initialize() {
+        if ((this.add == null) || (this.remove == null) || (this.remove.type != this.add.type)) {
+            return false;
+        }
+        if ((this.get != null) && (this.get.type != this.add.type)) {
+            this.get = null;
+        }
+        return true;
+    }
+
+    public Class<?> getListenerType() {
+        return this.add.type;
+    }
+
+    public Method getAddMethod() {
+        return this.add.method;
+    }
+
+    public Method getRemoveMethod() {
+        return this.remove.method;
+    }
+
+    public Method getGetMethod() {
+        return (this.get == null) ? null : this.get.method;
+    }
+
+    public boolean isUnicast() {
+        // if the adder method throws the TooManyListenersException
+        // then it is an Unicast event source
+        return this.add.isThrow(TooManyListenersException.class);
+    }
+
+    private static MethodInfo getInfo(MethodInfo info, Method method, int prefix, int postfix) {
+        Class<?> type = (postfix > 0)
+                ? MethodInfo.resolve(method, method.getGenericReturnType()).getComponentType()
+                : MethodInfo.resolve(method, method.getGenericParameterTypes()[0]);
+
+        if ((type != null) && EventListener.class.isAssignableFrom(type)) {
+            String name = method.getName();
+            if (prefix + postfix < name.length()) {
+                if (type.getName().endsWith(name.substring(prefix, name.length() - postfix))) {
+                    if ((info == null) || info.type.isAssignableFrom(type)) {
+                        return new MethodInfo(method, type);
+                    }
+                }
+            }
+        }
+        return info;
+    }
+
+    private static EventSetInfo getInfo(Map<String,EventSetInfo> map, String key) {
+        EventSetInfo info = map.get(key);
+        if (info == null) {
+            info = new EventSetInfo();
+            map.put(key, info);
+        }
+        return info;
+    }
+
+    public static Map<String,EventSetInfo> get(Class<?> type) {
+        List<Method> methods = ClassInfo.get(type).getMethods();
+        if (methods.isEmpty()) {
+            return Collections.emptyMap();
+        }
+        Map<String,EventSetInfo> map = new TreeMap<>();
+        for (Method method : ClassInfo.get(type).getMethods()) {
+            if (!Modifier.isStatic(method.getModifiers())) {
+                Class<?> returnType = method.getReturnType();
+                String name = method.getName();
+                switch (method.getParameterCount()) {
+                    case 1:
+                        if ((returnType == void.class) && name.endsWith("Listener")) {
+                            if (name.startsWith("add")) {
+                                EventSetInfo info = getInfo(map, name.substring(3, name.length() - 8));
+                                info.add = getInfo(info.add, method, 3, 0);
+                            } else if (name.startsWith("remove")) {
+                                EventSetInfo info = getInfo(map, name.substring(6, name.length() - 8));
+                                info.remove = getInfo(info.remove, method, 6, 0);
+                            }
+                        }
+                        break;
+                    case 0:
+                        if (returnType.isArray() && name.startsWith("get") && name.endsWith("Listeners")) {
+                            EventSetInfo info = getInfo(map, name.substring(3, name.length() - 9));
+                            info.get = getInfo(info.get, method, 3, 1);
+                        }
+                        break;
+                }
+            }
+        }
+        Iterator<EventSetInfo> iterator = map.values().iterator();
+        while (iterator.hasNext()) {
+            if (!iterator.next().initialize()) {
+                iterator.remove();
+            }
+        }
+        return !map.isEmpty()
+                ? Collections.unmodifiableMap(map)
+                : Collections.emptyMap();
+    }
+}

jdk/src/share/classes/com/sun/beans/introspect/MethodInfo.java

@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2014, 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.beans.introspect;
+
+import com.sun.beans.TypeResolver;
+import com.sun.beans.finder.MethodFinder;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+final class MethodInfo {
+    final Method method;
+    final Class<?> type;
+
+    MethodInfo(Method method, Class<?> type) {
+        this.method = method;
+        this.type = type;
+    }
+
+    MethodInfo(Method method, Type type) {
+        this.method = method;
+        this.type = resolve(method, type);
+    }
+
+    boolean isThrow(Class<?> exception) {
+        for (Class<?> type : this.method.getExceptionTypes()) {
+            if (type == exception) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    static Class<?> resolve(Method method, Type type) {
+        return TypeResolver.erase(TypeResolver.resolveInClass(method.getDeclaringClass(), type));
+    }
+
+    static List<Method> get(Class<?> type) {
+        List<Method> list = null;
+        if (type != null) {
+            boolean inaccessible = !Modifier.isPublic(type.getModifiers());
+            for (Method method : type.getMethods()) {
+                if (method.getDeclaringClass().equals(type)) {
+                    if (inaccessible) {
+                        try {
+                            method = MethodFinder.findAccessibleMethod(method);
+                            if (!method.getDeclaringClass().isInterface()) {
+                                method = null; // ignore methods from superclasses
+                            }
+                        } catch (NoSuchMethodException exception) {
+                            // commented out because of 6976577
+                            // method = null; // ignore inaccessible methods
+                        }
+                    }
+                    if (method != null) {
+                        if (list == null) {
+                            list = new ArrayList<>();
+                        }
+                        list.add(method);
+                    }
+                }
+            }
+        }
+        return (list != null)
+                ? Collections.unmodifiableList(list)
+                : Collections.emptyList();
+    }
+}