| /* |
| * 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.codehaus.groovy.reflection; |
| |
| import groovy.lang.GroovyRuntimeException; |
| import groovy.lang.MetaProperty; |
| import org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation; |
| |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Modifier; |
| |
| import static org.codehaus.groovy.reflection.ReflectionUtils.makeAccessibleInPrivilegedAction; |
| |
| public class CachedField extends MetaProperty { |
| private final Field cachedField; |
| |
| public CachedField(Field field) { |
| super (field.getName(), field.getType()); |
| this.cachedField = field; |
| } |
| |
| public boolean isStatic() { |
| return Modifier.isStatic(getModifiers()); |
| } |
| |
| public boolean isFinal() { |
| return Modifier.isFinal(getModifiers()); |
| } |
| |
| public int getModifiers() { |
| return cachedField.getModifiers(); |
| } |
| |
| /** |
| * @return the property of the given object |
| * @throws RuntimeException if the property could not be evaluated |
| */ |
| public Object getProperty(final Object object) { |
| makeAccessibleIfNecessary(); |
| AccessPermissionChecker.checkAccessPermission(cachedField); |
| try { |
| return cachedField.get(object); |
| } catch (IllegalAccessException e) { |
| throw new GroovyRuntimeException("Cannot get the property '" + name + "'.", e); |
| } |
| } |
| |
| /** |
| * Sets the property on the given object to the new value |
| * |
| * @param object on which to set the property |
| * @param newValue the new value of the property |
| * @throws RuntimeException if the property could not be set |
| */ |
| public void setProperty(final Object object, Object newValue) { |
| makeAccessibleIfNecessary(); |
| AccessPermissionChecker.checkAccessPermission(cachedField); |
| final Object goalValue = DefaultTypeTransformation.castToType(newValue, cachedField.getType()); |
| |
| if (isFinal()) { |
| throw new GroovyRuntimeException("Cannot set the property '" + name + "' because the backing field is final."); |
| } |
| try { |
| cachedField.set(object, goalValue); |
| } catch (IllegalAccessException ex) { |
| throw new GroovyRuntimeException("Cannot set the property '" + name + "'.", ex); |
| } |
| } |
| |
| public Class getDeclaringClass() { |
| return cachedField.getDeclaringClass(); |
| } |
| |
| public Field getCachedField() { |
| makeAccessibleIfNecessary(); |
| AccessPermissionChecker.checkAccessPermission(cachedField); |
| return cachedField; |
| } |
| |
| private boolean makeAccessibleDone = false; |
| private void makeAccessibleIfNecessary() { |
| if (!makeAccessibleDone) { |
| makeAccessibleInPrivilegedAction(cachedField); |
| makeAccessibleDone = true; |
| } |
| } |
| } |