2009/05/20 - Apache Shale has been retired.

   /*
    * 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.Iterator;
  import java.util.List;
  
  import javax.el.ELContext;
  import javax.el.ELException;
  import javax.faces.context.FacesContext;
  import javax.faces.el.EvaluationException;
  import javax.faces.el.PropertyResolver;
  
  /***
   * <p><code>ELResolver</code> implementation that wraps the legacy (JSF 1.1)
   * <code>PropertyResolver</code> chain.  See the JSF 1.2 Specification, section
   * 5.6.1.6, for requirements implemented by this class.</p>
   *
   * @since 1.0.4
   */
  public class FacesPropertyResolverChainWrapper 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 Object.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) {
  
          return null;
  
      }
  
  
  
      /***
       * <p>Evaluate with the legacy property resolver chain and return
       * the value.</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) || (property == null)) {
              return null;
          }
  
          context.setPropertyResolved(true);
          FacesContext fcontext = (FacesContext) context.getContext(FacesContext.class);
          ELContext elContext = fcontext.getELContext();
          PropertyResolver pr = fcontext.getApplication().getPropertyResolver();
  
          if ((base instanceof List) || base.getClass().isArray()) {
              Integer index = (Integer) fcontext.getApplication().getExpressionFactory().
                      coerceToType(property, Integer.class);
              try {
                  return pr.getType(base, index.intValue());
              } catch (EvaluationException e) {
                  context.setPropertyResolved(false);
                  throw new ELException(e);
              }
          } else {
              try {
                 return pr.getType(base, property);
             } catch (EvaluationException e) {
                 context.setPropertyResolved(false);
                 throw new ELException(e);
             }
         }
 
     }
 
 
     /***
      * <p>Evaluate with the legacy property resolver chain and return
      * the value.</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) || (property == null)) {
             return null;
         }
 
         context.setPropertyResolved(true);
         FacesContext fcontext = (FacesContext) context.getContext(FacesContext.class);
         ELContext elContext = fcontext.getELContext();
         PropertyResolver pr = fcontext.getApplication().getPropertyResolver();
 
         if ((base instanceof List) || base.getClass().isArray()) {
             Integer index = (Integer) fcontext.getApplication().getExpressionFactory().
                     coerceToType(property, Integer.class);
             try {
                 return pr.getValue(base, index.intValue());
             } catch (EvaluationException e) {
                 context.setPropertyResolved(false);
                 throw new ELException(e);
             }
         } else {
             try {
                 return pr.getValue(base, property);
             } catch (EvaluationException e) {
                 context.setPropertyResolved(false);
                 throw new ELException(e);
             }
         }
 
     }
 
 
     /***
      * <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) || (property == null)) {
             return false;
         }
 
         context.setPropertyResolved(true);
         FacesContext fcontext = (FacesContext) context.getContext(FacesContext.class);
         ELContext elContext = fcontext.getELContext();
         PropertyResolver pr = fcontext.getApplication().getPropertyResolver();
 
         if ((base instanceof List) || base.getClass().isArray()) {
             Integer index = (Integer) fcontext.getApplication().getExpressionFactory().
                     coerceToType(property, Integer.class);
             try {
                 return pr.isReadOnly(base, index.intValue());
             } catch (EvaluationException e) {
                 context.setPropertyResolved(false);
                 throw new ELException(e);
             }
         } else {
             try {
                 return pr.isReadOnly(base, property);
             } catch (EvaluationException e) {
                 context.setPropertyResolved(false);
                 throw new ELException(e);
             }
         }
 
     }
 
 
 
     /***
      * <p>Set the value of a property 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) || (property == null)) {
             return;
         }
 
         context.setPropertyResolved(true);
         FacesContext fcontext = (FacesContext) context.getContext(FacesContext.class);
         ELContext elContext = fcontext.getELContext();
         PropertyResolver pr = fcontext.getApplication().getPropertyResolver();
 
         if ((base instanceof List) || base.getClass().isArray()) {
             Integer index = (Integer) fcontext.getApplication().getExpressionFactory().
                     coerceToType(property, Integer.class);
             try {
                 pr.setValue(base, index.intValue(), value);
             } catch (EvaluationException e) {
                 context.setPropertyResolved(false);
                 throw new ELException(e);
             }
         } else {
             try {
                 pr.setValue(base, property, value);
             } catch (EvaluationException e) {
                 context.setPropertyResolved(false);
                 throw new ELException(e);
             }
         }
 
     }
 
 
 }