| /* |
| * 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 freemarker.ext.beans; |
| |
| import java.beans.IntrospectionException; |
| import java.beans.PropertyDescriptor; |
| import java.lang.reflect.Method; |
| |
| import freemarker.ext.beans.BeansWrapper.MethodAppearanceDecision; |
| import freemarker.ext.beans.BeansWrapper.MethodAppearanceDecisionInput; |
| |
| class GetlessMethodsAsPropertyGettersRule implements MethodAppearanceFineTuner, SingletonCustomizer { |
| |
| static final GetlessMethodsAsPropertyGettersRule INSTANCE = new GetlessMethodsAsPropertyGettersRule(); |
| |
| // Can't be constructed from outside |
| private GetlessMethodsAsPropertyGettersRule() { } |
| |
| public void process( |
| MethodAppearanceDecisionInput in, MethodAppearanceDecision out) { |
| legacyProcess(in.getContainingClass(), in.getMethod(), out); |
| } |
| |
| /** This only exists as the tests need to call this through the deprecated method too. */ |
| public void legacyProcess( |
| Class clazz, Method m, MethodAppearanceDecision decision) { |
| if (m.getDeclaringClass() != Object.class |
| && m.getReturnType() != void.class |
| && m.getParameterTypes().length == 0) { |
| String mName = m.getName(); |
| if (!looksLikePropertyReadMethod(mName)) { |
| decision.setExposeMethodAs(null); |
| try { |
| decision.setExposeAsProperty(new PropertyDescriptor( |
| mName, clazz, mName, null)); |
| } catch (IntrospectionException e) { // Won't happen... |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| } |
| |
| private static boolean looksLikePropertyReadMethod(String name) { |
| final int verbEnd; |
| if (name.startsWith("get")) verbEnd = 3; |
| else if (name.startsWith("is")) verbEnd = 2; |
| else return false; |
| |
| return name.length() == verbEnd || Character.isUpperCase(name.charAt(verbEnd)); |
| } |
| |
| } |