1/* 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25package com.sun.beans.introspect; 26 27import com.sun.beans.util.Cache; 28 29import java.lang.reflect.Method; 30import java.util.List; 31import java.util.Map; 32 33import static sun.reflect.misc.ReflectUtil.checkPackageAccess; 34 35public final class ClassInfo { 36 private static final ClassInfo DEFAULT = new ClassInfo(null); 37 private static final Cache<Class<?>,ClassInfo> CACHE 38 = new Cache<Class<?>,ClassInfo>(Cache.Kind.SOFT, Cache.Kind.SOFT) { 39 @Override 40 public ClassInfo create(Class<?> type) { 41 return new ClassInfo(type); 42 } 43 }; 44 45 public static ClassInfo get(Class<?> type) { 46 if (type == null) { 47 return DEFAULT; 48 } 49 try { 50 checkPackageAccess(type); 51 return CACHE.get(type); 52 } catch (SecurityException exception) { 53 return DEFAULT; 54 } 55 } 56 57 private final Object mutex = new Object(); 58 private final Class<?> type; 59 private List<Method> methods; 60 private Map<String,PropertyInfo> properties; 61 private Map<String,EventSetInfo> eventSets; 62 63 private ClassInfo(Class<?> type) { 64 this.type = type; 65 } 66 67 public List<Method> getMethods() { 68 if (this.methods == null) { 69 synchronized (this.mutex) { 70 if (this.methods == null) { 71 this.methods = MethodInfo.get(this.type); 72 } 73 } 74 } 75 return this.methods; 76 } 77 78 public Map<String,PropertyInfo> getProperties() { 79 if (this.properties == null) { 80 synchronized (this.mutex) { 81 if (this.properties == null) { 82 this.properties = PropertyInfo.get(this.type); 83 } 84 } 85 } 86 return this.properties; 87 } 88 89 public Map<String,EventSetInfo> getEventSets() { 90 if (this.eventSets == null) { 91 synchronized (this.mutex) { 92 if (this.eventSets == null) { 93 this.eventSets = EventSetInfo.get(this.type); 94 } 95 } 96 } 97 return this.eventSets; 98 } 99} 100