| /* |
| * 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.sling.scripting.javascript.helper; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.mozilla.javascript.Context; |
| import org.mozilla.javascript.Scriptable; |
| import org.mozilla.javascript.WrapFactory; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class SlingWrapFactory extends WrapFactory { |
| |
| /** List of classes that must not be wrapped (added for SLING-382) */ |
| private static final Class<?>[] EXCLUDED_CLASSES = {}; |
| |
| /** default log */ |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| private final Map<Class<?>, String> wrappers = new HashMap<Class<?>, String>(); |
| |
| /** |
| * @param cx the current Context for this thread |
| * @param scope the scope of the executing script |
| * @param javaObject the object to be wrapped |
| * @param staticType type hint. If security restrictions prevent to wrap |
| * object based on its class, staticType will be used instead. |
| * @return the wrapped value which shall not be null |
| */ |
| @SuppressWarnings("unchecked") |
| @Override |
| public Scriptable wrapAsJavaObject(Context cx, Scriptable scope, |
| Object javaObject, Class staticType) { |
| |
| Scriptable result = null; |
| try { |
| String hostObjectName = getHostObjectName(staticType); |
| |
| if (hostObjectName == null) { |
| hostObjectName = getHostObjectName(javaObject.getClass()); |
| } |
| |
| if (hostObjectName != null) { |
| result = cx.newObject(scope, hostObjectName, |
| new Object[] { javaObject }); |
| } |
| } catch (Exception e) { |
| log.warn("Cannot Wrap " + javaObject, e); |
| } |
| |
| if(result==null) { |
| result = super.wrapAsJavaObject(cx, scope, javaObject, staticType); |
| } |
| |
| return result; |
| } |
| |
| private String getHostObjectName(Class<?> javaClass) { |
| if(javaClass==null || isExcluded(javaClass)) { |
| return null; |
| } |
| String hostObjectName = wrappers.get(javaClass); |
| if (hostObjectName == null) { |
| // before SLING-383 the superclass was tested first, |
| // but for Version and VersionHistory this would get |
| // a Node wrapper, that's not what we want |
| final Class<?>[] javaInterfaces = javaClass.getInterfaces(); |
| for (int i = 0; i < javaInterfaces.length && hostObjectName == null; i++) { |
| hostObjectName = getHostObjectName(javaInterfaces[i]); |
| } |
| |
| if (hostObjectName == null) { |
| hostObjectName = getHostObjectName(javaClass.getSuperclass()); |
| } |
| } |
| |
| return hostObjectName; |
| } |
| |
| /* |
| * Is this class in the excluded class list? |
| */ |
| private boolean isExcluded(Class<?> javaClass) { |
| for (Class<?> type : EXCLUDED_CLASSES) { |
| if (type.isAssignableFrom(javaClass)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public void registerWrapper(Class<?> javaClass, String hostObjectName) { |
| wrappers.put(javaClass, hostObjectName); |
| } |
| |
| public void unregisterWrapper(Class<?> javaClass) { |
| wrappers.remove(javaClass); |
| } |
| } |