| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.bval.util; |
| |
| import java.beans.Introspector; |
| import java.lang.annotation.ElementType; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Type; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| |
| /** |
| * Description: invoke a zero-argument method (getter)<br/> |
| */ |
| public class MethodAccess extends AccessStrategy { |
| private final Method method; |
| private final String propertyName; |
| |
| /** |
| * Create a new MethodAccess instance. |
| * @param method |
| */ |
| public MethodAccess(Method method) { |
| this(getPropertyName(method), method); |
| } |
| |
| /** |
| * Create a new MethodAccess instance. |
| * @param propertyName |
| * @param method |
| */ |
| public MethodAccess(String propertyName, final Method method) { |
| this.method = method; |
| this.propertyName = propertyName; |
| if (!method.isAccessible()) { |
| run( new PrivilegedAction<Void>() { |
| public Void run() { |
| method.setAccessible(true); |
| return null; |
| } |
| }); |
| } |
| } |
| |
| /** |
| * Process bean properties getter by applying the JavaBean naming conventions. |
| * |
| * @param member the member for which to get the property name. |
| * @return The bean method name with the "is" or "get" prefix stripped off, <code>null</code> |
| * the method name id not according to the JavaBeans standard. |
| */ |
| public static String getPropertyName(Method member) { |
| String name = null; |
| String methodName = member.getName(); |
| if (methodName.startsWith("is")) { |
| name = Introspector.decapitalize(methodName.substring(2)); |
| } /* else if ( methodName.startsWith("has")) { |
| name = Introspector.decapitalize( methodName.substring( 3 ) ); |
| } */ |
| // setter annotation is NOT supported in the spec |
| /* else if (method.getName().startsWith("set") && method.getParameterTypes().length == 1) { |
| propName = Introspector.decapitalize(method.getName().substring(3)); |
| } */ |
| else if (methodName.startsWith("get")) { |
| name = Introspector.decapitalize(methodName.substring(3)); |
| } |
| return name; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * normally the propertyName of the getter method, e.g.<br> |
| * method: getName() -> propertyName: name<br> |
| * method: isValid() -> propertyName: valid<br> |
| */ |
| public String getPropertyName() { |
| return propertyName; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public Object get(final Object instance) { |
| try { |
| return method.invoke(instance); |
| } catch (IllegalAccessException e) { |
| throw new IllegalArgumentException(e); |
| } catch (InvocationTargetException e) { |
| throw new IllegalArgumentException(e); |
| } |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public ElementType getElementType() { |
| return ElementType.METHOD; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public Type getJavaType() { |
| return method.getGenericReturnType(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public String toString() { |
| return method.toString(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| |
| MethodAccess that = (MethodAccess) o; |
| |
| return method.equals(that.method); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public int hashCode() { |
| return method.hashCode(); |
| } |
| |
| private static <T> T run(PrivilegedAction<T> action) { |
| if (System.getSecurityManager() != null) { |
| return AccessController.doPrivileged(action); |
| } else { |
| return action.run(); |
| } |
| } |
| } |