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src/java.desktop/share/classes/java/beans/MethodRef.java

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   1 /*
   2  * Copyright (c) 2013, 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


  47             this.methodRef = new SoftReference<>(method);
  48             this.typeRef = new WeakReference<Class<?>>(method.getDeclaringClass());
  49         }
  50     }
  51 
  52     boolean isSet() {
  53         return this.methodRef != null;
  54     }
  55 
  56     Method get() {
  57         if (this.methodRef == null) {
  58             return null;
  59         }
  60         Method method = this.methodRef.get();
  61         if (method == null) {
  62             method = find(this.typeRef.get(), this.signature);
  63             if (method == null) {
  64                 this.signature = null;
  65                 this.methodRef = null;
  66                 this.typeRef = null;

  67             }
  68             else {
  69                 this.methodRef = new SoftReference<>(method);
  70             }
  71         }
  72         return isPackageAccessible(method.getDeclaringClass()) ? method : null;
  73     }
  74 
  75     private static Method find(Class<?> type, String signature) {
  76         if (type != null) {
  77             for (Method method : type.getMethods()) {
  78                 if (type.equals(method.getDeclaringClass())) {
  79                     if (method.toGenericString().equals(signature)) {
  80                         return method;
  81                     }
  82                 }
  83             }
  84         }
  85         return null;
  86     }
  87 }
   1 /*
   2  * Copyright (c) 2013, 2016, 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


  47             this.methodRef = new SoftReference<>(method);
  48             this.typeRef = new WeakReference<Class<?>>(method.getDeclaringClass());
  49         }
  50     }
  51 
  52     boolean isSet() {
  53         return this.methodRef != null;
  54     }
  55 
  56     Method get() {
  57         if (this.methodRef == null) {
  58             return null;
  59         }
  60         Method method = this.methodRef.get();
  61         if (method == null) {
  62             method = find(this.typeRef.get(), this.signature);
  63             if (method == null) {
  64                 this.signature = null;
  65                 this.methodRef = null;
  66                 this.typeRef = null;
  67                 return null;
  68             }

  69             this.methodRef = new SoftReference<>(method);
  70         }

  71         return isPackageAccessible(method.getDeclaringClass()) ? method : null;
  72     }
  73 
  74     private static Method find(Class<?> type, String signature) {
  75         if (type != null) {
  76             for (Method method : type.getMethods()) {
  77                 if (type.equals(method.getDeclaringClass())) {
  78                     if (method.toGenericString().equals(signature)) {
  79                         return method;
  80                     }
  81                 }
  82             }
  83         }
  84         return null;
  85     }
  86 }
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