6723447: Introspector doesn't check return type for indexed property setters

Reviewed-by: rupashka

src/share/classes/java/beans/IndexedPropertyDescriptor.java

 /*
- * Copyright 1996-2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 1996-2009 Sun Microsystems, Inc.  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
@@ -274,6 +274,11 @@ perty.
             }
             indexedWriteMethod = Introspector.findMethod(cls, indexedWriteMethodName,
                          2, (type == null) ? null : new Class[] { int.class, type });
+            if (indexedWriteMethod != null) {
+                if (!indexedWriteMethod.getReturnType().equals(void.class)) {
+                    indexedWriteMethod = null;
+                }
+            }
             setIndexedWriteMethod0(indexedWriteMethod);
         }
         return indexedWriteMethod;

src/share/classes/java/beans/Introspector.java

@@ -524,9 +524,9 @@ public class Introspector {
                             pd = new PropertyDescriptor(this.beanClass, name.substring(2), method, null);
                         }
                     } else if (argCount == 1) {
-                        if (argTypes[0] == int.class && name.startsWith(GET_PREFIX)) {
+                        if (int.class.equals(argTypes[0]) && name.startsWith(GET_PREFIX)) {
                             pd = new IndexedPropertyDescriptor(this.beanClass, name.substring(3), null, null, method, null);
-                        } else if (resultType == void.class && name.startsWith(SET_PREFIX)) {
+                        } else if (void.class.equals(resultType) && name.startsWith(SET_PREFIX)) {
                             // Simple setter
                             pd = new PropertyDescriptor(this.beanClass, name.substring(3), null, method);
                             if (throwsException(method, PropertyVetoException.class)) {
@@ -534,7 +534,7 @@ public class Introspector {
                             }
                         }
                     } else if (argCount == 2) {
-                            if (argTypes[0] == int.class && name.startsWith(SET_PREFIX)) {
+                            if (void.class.equals(resultType) && int.class.equals(argTypes[0]) && name.startsWith(SET_PREFIX)) {
                             pd = new IndexedPropertyDescriptor(this.beanClass, name.substring(3), null, null, null, method);
                             if (throwsException(method, PropertyVetoException.class)) {
                                 pd.setConstrained(true);

src/share/classes/java/beans/PropertyDescriptor.java

 /*
- * Copyright 1996-2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 1996-2009 Sun Microsystems, Inc.  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
@@ -294,6 +294,11 @@ public class PropertyDescriptor extends FeatureDescriptor {
 
             writeMethod = Introspector.findMethod(cls, writeMethodName, 1,
                           (type == null) ? null : new Class[] { type });
+            if (writeMethod != null) {
+                if (!writeMethod.getReturnType().equals(void.class)) {
+                    writeMethod = null;
+                }
+            }
             try {
                 setWriteMethod(writeMethod);
             } catch (IntrospectionException ex) {

test/java/beans/Introspector/Test6723447.java

+/*
+ * Copyright 2009 Sun Microsystems, Inc.  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.
+ *
+ * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 6723447
+ * @summary Tests return type for property setters
+ * @author Sergey Malenkov
+ */
+
+import java.beans.IndexedPropertyDescriptor;
+import java.beans.IntrospectionException;
+import java.beans.Introspector;
+import java.beans.PropertyDescriptor;
+import java.lang.reflect.Method;
+import java.math.BigDecimal;
+
+public class Test6723447 {
+
+    public static void main(String[] args) {
+        test(Test6723447.class);
+        test(BigDecimal.class);
+    }
+
+    private static void test(Class<?> type) {
+        for (PropertyDescriptor pd : getPropertyDescriptors(type)) {
+            test(pd.getWriteMethod());
+            if (pd instanceof IndexedPropertyDescriptor) {
+                IndexedPropertyDescriptor ipd = (IndexedPropertyDescriptor) pd;
+                test(ipd.getIndexedWriteMethod());
+            }
+        }
+    }
+
+    private static void test(Method method) {
+        if (method != null) {
+            Class<?> type = method.getReturnType();
+            if (!type.equals(void.class)) {
+                throw new Error("unexpected return type: " + type);
+            }
+        }
+    }
+
+    private static PropertyDescriptor[] getPropertyDescriptors(Class<?> type) {
+        try {
+            return Introspector.getBeanInfo(type).getPropertyDescriptors();
+        }
+        catch (IntrospectionException exception) {
+            throw new Error("unexpected exception", exception);
+        }
+    }
+
+    public Object getValue() {
+        return null;
+    }
+
+    public Object setValue(Object value) {
+        return value;
+    }
+
+    public Object getValues(int index) {
+        return null;
+    }
+
+    public Object setValues(int index, Object value) {
+        return value;
+    }
+}