| /* |
| * 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.shale.test.el; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.el.ELContext; |
| import javax.el.PropertyNotFoundException; |
| import javax.el.PropertyNotWritableException; |
| import javax.faces.component.UIViewRoot; |
| import javax.faces.context.ExternalContext; |
| import javax.faces.context.FacesContext; |
| |
| /** |
| * <p><code>ELResolver</code> implementation that accesses implicit objects |
| * in the current request context. See the JSF 1.2 Specification, section |
| * 5.6.2.1, for requirements implemented by this class.</p> |
| * |
| * @since 1.0.4 |
| */ |
| public class FacesImplicitObjectELResolver extends AbstractELResolver { |
| |
| |
| /** |
| * <p>The names of all implicit objects recognized by this resolver.</p> |
| */ |
| private static final String[] NAMES = |
| { "application", "applicationScope", "cookie", "facesContext", |
| "header", "headerValues", "initParam", "param", "paramValues", |
| "request", "requestScope", "session", "sessionScope", "view" }; |
| |
| |
| /** |
| * <p>The property types corresponding to the implicit object names.</p> |
| */ |
| private static final Class[] TYPES = |
| { Object.class, Map.class, Map.class, FacesContext.class, |
| Map.class, Map.class, Map.class, Map.class, Map.class, |
| Object.class, Map.class, Object.class, Map.class, UIViewRoot.class }; |
| |
| |
| /** |
| * <p>The settable value types corresponding to the implicit |
| * object names.</p> |
| */ |
| private static final Class[] VALUES = |
| { null, Object.class, null, null, |
| null, null, null, null, null, |
| null, Object.class, null, Object.class, null }; |
| |
| |
| /** |
| * <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); |
| List descriptors = new ArrayList(); |
| |
| // Add feature descriptors for each implicit object |
| for (int i = 0; i < NAMES.length; i++) { |
| descriptors.add(descriptor(NAMES[i], NAMES[i], NAMES[i], |
| false, false, true, TYPES[i], 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"); |
| } |
| String name = property.toString(); |
| for (int i = 0; i < NAMES.length; i++) { |
| if (name.equals(NAMES[i])) { |
| context.setPropertyResolved(true); |
| return VALUES[i]; |
| } |
| } |
| return null; |
| |
| } |
| |
| |
| /** |
| * <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(); |
| String name = property.toString(); |
| |
| if (name.equals("application")) { |
| context.setPropertyResolved(true); |
| return econtext.getContext(); |
| } else if (name.equals("applicationScope")) { |
| context.setPropertyResolved(true); |
| return econtext.getApplicationMap(); |
| } else if (name.equals("cookie")) { |
| context.setPropertyResolved(true); |
| return econtext.getRequestCookieMap(); |
| } else if (name.equals("facesContext")) { |
| context.setPropertyResolved(true); |
| return fcontext; |
| } else if (name.equals("header")) { |
| context.setPropertyResolved(true); |
| return econtext.getRequestHeaderMap(); |
| } else if (name.equals("headerValues")) { |
| context.setPropertyResolved(true); |
| return econtext.getRequestHeaderValuesMap(); |
| } else if (name.equals("initParam")) { |
| context.setPropertyResolved(true); |
| return econtext.getInitParameterMap(); |
| } else if (name.equals("param")) { |
| context.setPropertyResolved(true); |
| return econtext.getRequestParameterMap(); |
| } else if (name.equals("paramValues")) { |
| context.setPropertyResolved(true); |
| return econtext.getRequestParameterValuesMap(); |
| } else if (name.equals("request")) { |
| context.setPropertyResolved(true); |
| return econtext.getRequest(); |
| } else if (name.equals("requestScope")) { |
| context.setPropertyResolved(true); |
| return econtext.getRequestMap(); |
| } else if (name.equals("session")) { |
| context.setPropertyResolved(true); |
| return econtext.getSession(true); |
| } else if (name.equals("sessionScope")) { |
| context.setPropertyResolved(true); |
| return econtext.getSessionMap(); |
| } else if (name.equals("view")) { |
| context.setPropertyResolved(true); |
| return fcontext.getViewRoot(); |
| } |
| |
| 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) { |
| return false; |
| } |
| if (property == null) { |
| throw new PropertyNotFoundException("No property specified"); |
| } |
| String name = property.toString(); |
| for (int i = 0; i < NAMES.length; i++) { |
| if (name.equals(NAMES[i])) { |
| context.setPropertyResolved(true); |
| return true; |
| } |
| } |
| 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"); |
| } |
| |
| String name = property.toString(); |
| for (int i = 0; i < NAMES.length; i++) { |
| if (name.equals(NAMES[i])) { |
| context.setPropertyResolved(true); |
| throw new PropertyNotWritableException(name); |
| } |
| } |
| |
| } |
| |
| |
| } |