| /* |
| * 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.myfaces.test.el; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.Map.Entry; |
| |
| import javax.el.ELContext; |
| import javax.el.PropertyNotFoundException; |
| import javax.faces.context.ExternalContext; |
| import javax.faces.context.FacesContext; |
| |
| /** |
| * <p><code>ELResolver</code> implementation that accesses scoped variables |
| * in the current request context. See the JSF 1.2 Specification, section |
| * 5.6.2.7, for requirements implemented by this class.</p> |
| * |
| * @since 1.0.0 |
| */ |
| public class FacesScopedAttributeELResolver extends AbstractELResolver |
| { |
| |
| /** |
| * <p>Return the most general type this resolver accepts for the |
| * <code>property</code> argument.</p> |
| */ |
| public Class getCommonPropertyType(ELContext context, Object base) |
| { |
| |
| if (base != null) |
| { |
| return null; |
| } |
| else |
| { |
| return String.class; |
| } |
| |
| } |
| |
| /** |
| * <p>Return an <code>Iterator</code> over the attributes that this |
| * resolver knows how to deal with.</p> |
| * |
| * @param context <code>ELContext</code> for evaluating this value |
| * @param base Base object against which this evaluation occurs |
| */ |
| public Iterator getFeatureDescriptors(ELContext context, Object base) |
| { |
| |
| if (base != null) |
| { |
| return null; |
| } |
| |
| // Create the variables we will need |
| FacesContext fcontext = (FacesContext) context |
| .getContext(FacesContext.class); |
| ExternalContext econtext = fcontext.getExternalContext(); |
| List descriptors = new ArrayList(); |
| Map map = null; |
| Set set = null; |
| Iterator items = null; |
| String key = null; |
| Object value = null; |
| |
| // Add feature descriptors for request scoped attributes |
| set = econtext.getRequestMap().entrySet(); |
| items = set.iterator(); |
| while (items.hasNext()) |
| { |
| Entry item = (Entry) items.next(); |
| key = (String) item.getKey(); |
| value = item.getValue(); |
| descriptors.add(descriptor(key, key, "Request Scope Attribute " |
| + key, false, false, true, value.getClass(), true)); |
| } |
| |
| // Add feature descriptors for session scoped attributes |
| set = econtext.getSessionMap().entrySet(); |
| items = set.iterator(); |
| while (items.hasNext()) |
| { |
| Entry item = (Entry) items.next(); |
| key = (String) item.getKey(); |
| value = item.getValue(); |
| descriptors.add(descriptor(key, key, "Session Scope Attribute " |
| + key, false, false, true, value.getClass(), true)); |
| } |
| |
| // Add feature descriptors for application scoped attributes |
| set = econtext.getApplicationMap().entrySet(); |
| items = set.iterator(); |
| while (items.hasNext()) |
| { |
| Entry item = (Entry) items.next(); |
| key = (String) item.getKey(); |
| value = item.getValue(); |
| descriptors.add(descriptor(key, key, "Application Scope Attribute " |
| + key, false, false, true, value.getClass(), true)); |
| } |
| |
| // Return the accumulated descriptors |
| return descriptors.iterator(); |
| |
| } |
| |
| /** |
| * <p>Return the Java type of the specified property.</p> |
| * |
| * @param context <code>ELContext</code> for evaluating this value |
| * @param base Base object against which this evaluation occurs |
| * (must be null because we are evaluating a top level variable) |
| * @param property Property name to be accessed |
| */ |
| public Class getType(ELContext context, Object base, Object property) |
| { |
| |
| if (base != null) |
| { |
| return null; |
| } |
| if (property == null) |
| { |
| throw new PropertyNotFoundException("No property specified"); |
| } |
| context.setPropertyResolved(true); |
| return Object.class; |
| |
| } |
| |
| /** |
| * <p>Return an existing scoped object for the specified name (if any); |
| * otherwise, return <code>null</code>.</p> |
| * |
| * @param context <code>ELContext</code> for evaluating this value |
| * @param base Base object against which this evaluation occurs |
| * (must be null because we are evaluating a top level variable) |
| * @param property Property name to be accessed |
| */ |
| public Object getValue(ELContext context, Object base, Object property) |
| { |
| |
| if (base != null) |
| { |
| return null; |
| } |
| if (property == null) |
| { |
| throw new PropertyNotFoundException("No property specified"); |
| } |
| |
| FacesContext fcontext = (FacesContext) context |
| .getContext(FacesContext.class); |
| ExternalContext econtext = fcontext.getExternalContext(); |
| Object value = null; |
| value = econtext.getRequestMap().get(property); |
| if (value != null) |
| { |
| context.setPropertyResolved(true); |
| return value; |
| } |
| value = econtext.getSessionMap().get(property); |
| if (value != null) |
| { |
| context.setPropertyResolved(true); |
| return value; |
| } |
| value = econtext.getApplicationMap().get(property); |
| if (value != null) |
| { |
| context.setPropertyResolved(true); |
| return value; |
| } |
| |
| return null; |
| |
| } |
| |
| /** |
| * <p>Return <code>true</code> if the specified property is read only.</p> |
| * |
| * @param context <code>ELContext</code> for evaluating this value |
| * @param base Base object against which this evaluation occurs |
| * (must be null because we are evaluating a top level variable) |
| * @param property Property name to be accessed |
| */ |
| public boolean isReadOnly(ELContext context, Object base, Object property) |
| { |
| |
| if (base == null) |
| { |
| context.setPropertyResolved(true); |
| return false; |
| } |
| return false; |
| |
| } |
| |
| /** |
| * <p>Set the value of a scoped object for the specified name.</p> |
| * |
| * @param context <code>ELContext</code> for evaluating this value |
| * @param base Base object against which this evaluation occurs |
| * (must be null because we are evaluating a top level variable) |
| * @param property Property name to be accessed |
| * @param value New value to be set |
| */ |
| public void setValue(ELContext context, Object base, Object property, |
| Object value) |
| { |
| |
| if (base != null) |
| { |
| return; |
| } |
| if (property == null) |
| { |
| throw new PropertyNotFoundException("No property specified"); |
| } |
| |
| context.setPropertyResolved(true); |
| String key = property.toString(); |
| Object result = null; |
| FacesContext fcontext = (FacesContext) context |
| .getContext(FacesContext.class); |
| ExternalContext econtext = fcontext.getExternalContext(); |
| |
| if (econtext.getRequestMap().containsKey(property)) |
| { |
| econtext.getRequestMap().put(key, value); |
| } |
| else if (econtext.getSessionMap().containsKey(property)) |
| { |
| econtext.getSessionMap().put(key, value); |
| } |
| else if (econtext.getApplicationMap().containsKey(property)) |
| { |
| econtext.getApplicationMap().put(key, value); |
| } |
| else |
| { |
| econtext.getRequestMap().put(key, value); |
| } |
| |
| } |
| |
| } |