| /* |
| * 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 javax.el; |
| |
| import java.beans.FeatureDescriptor; |
| import java.util.Iterator; |
| |
| /** |
| * @since EL 3.0 |
| */ |
| public class BeanNameELResolver extends ELResolver { |
| |
| private final BeanNameResolver beanNameResolver; |
| |
| public BeanNameELResolver(BeanNameResolver beanNameResolver) { |
| this.beanNameResolver = beanNameResolver; |
| } |
| |
| @Override |
| public Object getValue(ELContext context, Object base, Object property) { |
| |
| if (context == null) { |
| throw new NullPointerException(); |
| } |
| if (base != null || !(property instanceof String)) { |
| return null; |
| } |
| |
| String beanName = (String) property; |
| |
| if (beanNameResolver.isNameResolved(beanName)) { |
| try { |
| Object result = beanNameResolver.getBean(beanName); |
| context.setPropertyResolved(base, property); |
| return result; |
| } catch (Throwable t) { |
| Util.handleThrowable(t); |
| throw new ELException(t); |
| } |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public void setValue(ELContext context, Object base, Object property, |
| Object value) { |
| |
| if (context == null) { |
| throw new NullPointerException(); |
| } |
| if (base != null || !(property instanceof String)) { |
| return; |
| } |
| |
| String beanName = (String) property; |
| |
| boolean isResolved = context.isPropertyResolved(); |
| |
| boolean isReadOnly; |
| try { |
| isReadOnly = isReadOnly(context, base, property); |
| } catch (Throwable t) { |
| Util.handleThrowable(t); |
| throw new ELException(t); |
| } finally { |
| context.setPropertyResolved(isResolved); |
| } |
| |
| if (isReadOnly) { |
| throw new PropertyNotWritableException(Util.message(context, |
| "beanNameELResolver.beanReadOnly", beanName)); |
| } |
| |
| if (beanNameResolver.isNameResolved(beanName) || |
| beanNameResolver.canCreateBean(beanName)) { |
| try { |
| beanNameResolver.setBeanValue(beanName, value); |
| context.setPropertyResolved(base, property); |
| } catch (Throwable t) { |
| Util.handleThrowable(t); |
| throw new ELException(t); |
| } |
| } |
| } |
| |
| @Override |
| public Class<?> getType(ELContext context, Object base, Object property) { |
| |
| if (context == null) { |
| throw new NullPointerException(); |
| } |
| if (base != null || !(property instanceof String)) { |
| return null; |
| } |
| |
| String beanName = (String) property; |
| |
| try { |
| if (beanNameResolver.isNameResolved(beanName)) { |
| Class<?> result = beanNameResolver.getBean(beanName).getClass(); |
| context.setPropertyResolved(base, property); |
| return result; |
| } |
| } catch (Throwable t) { |
| Util.handleThrowable(t); |
| throw new ELException(t); |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public boolean isReadOnly(ELContext context, Object base, Object property) { |
| |
| if (context == null) { |
| throw new NullPointerException(); |
| } |
| if (base != null || !(property instanceof String)) { |
| // Return value undefined |
| return false; |
| } |
| |
| String beanName = (String) property; |
| |
| if (beanNameResolver.isNameResolved(beanName)) { |
| boolean result; |
| try { |
| result = beanNameResolver.isReadOnly(beanName); |
| } catch (Throwable t) { |
| Util.handleThrowable(t); |
| throw new ELException(t); |
| } |
| context.setPropertyResolved(base, property); |
| return result; |
| } |
| |
| // Return value undefined |
| return false; |
| } |
| |
| @Override |
| public Iterator<FeatureDescriptor> getFeatureDescriptors(ELContext context, |
| Object base) { |
| return null; |
| } |
| |
| @Override |
| public Class<?> getCommonPropertyType(ELContext context, Object base) { |
| return String.class; |
| } |
| } |