Coverage Report - org.apache.tiles.el.TilesContextELResolver
 
Classes in this File Line Coverage Branch Coverage Complexity
TilesContextELResolver
100%
38/38
90%
20/22
3.286
 
 1  
 /*
 2  
  * $Id: TilesContextELResolver.java 1049676 2010-12-15 19:38:54Z apetrelli $
 3  
  *
 4  
  * Licensed to the Apache Software Foundation (ASF) under one
 5  
  * or more contributor license agreements.  See the NOTICE file
 6  
  * distributed with this work for additional information
 7  
  * regarding copyright ownership.  The ASF licenses this file
 8  
  * to you under the Apache License, Version 2.0 (the
 9  
  * "License"); you may not use this file except in compliance
 10  
  * with the License.  You may obtain a copy of the License at
 11  
  *
 12  
  * http://www.apache.org/licenses/LICENSE-2.0
 13  
  *
 14  
  * Unless required by applicable law or agreed to in writing,
 15  
  * software distributed under the License is distributed on an
 16  
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 17  
  * KIND, either express or implied.  See the License for the
 18  
  * specific language governing permissions and limitations
 19  
  * under the License.
 20  
  */
 21  
 package org.apache.tiles.el;
 22  
 
 23  
 import java.beans.FeatureDescriptor;
 24  
 import java.util.Iterator;
 25  
 
 26  
 import javax.el.ELContext;
 27  
 import javax.el.ELResolver;
 28  
 
 29  
 import org.apache.tiles.request.ApplicationContext;
 30  
 import org.apache.tiles.request.Request;
 31  
 import org.apache.tiles.util.CombinedBeanInfo;
 32  
 
 33  
 /**
 34  
  * Resolves properties of {@link Request} and
 35  
  * {@link ApplicationContext}.
 36  
  *
 37  
  * @version $Rev: 1049676 $ $Date: 2010-12-16 06:38:54 +1100 (Thu, 16 Dec 2010) $
 38  
  * @since 2.2.1
 39  
  */
 40  
 public class TilesContextELResolver extends ELResolver {
 41  
 
 42  
     /**
 43  
      * Internal bean resolver to resolve beans in any context.
 44  
      */
 45  
     private ELResolver beanElResolver;
 46  
 
 47  
     /**
 48  
      * Constructor.
 49  
      *
 50  
      * @param beanElResolver The used bean resolver.
 51  
      */
 52  9
     public TilesContextELResolver(ELResolver beanElResolver) {
 53  9
         this.beanElResolver = beanElResolver;
 54  9
     }
 55  
 
 56  
     /**
 57  
      * The beaninfos about {@link Request} and {@link ApplicationContext}.
 58  
      */
 59  9
     private CombinedBeanInfo requestBeanInfo = new CombinedBeanInfo(
 60  
             Request.class, ApplicationContext.class);
 61  
 
 62  
     /** {@inheritDoc} */
 63  
     @Override
 64  
     public Class<?> getCommonPropertyType(ELContext context, Object base) {
 65  
         // only resolve at the root of the context
 66  2
         if (base != null) {
 67  1
             return null;
 68  
         }
 69  
 
 70  1
         return String.class;
 71  
     }
 72  
 
 73  
     /** {@inheritDoc} */
 74  
     @Override
 75  
     public Iterator<FeatureDescriptor> getFeatureDescriptors(ELContext context,
 76  
             Object base) {
 77  
         // only resolve at the root of the context
 78  2
         if (base != null) {
 79  1
             return null;
 80  
         }
 81  
 
 82  1
         return requestBeanInfo.getDescriptors().iterator();
 83  
     }
 84  
 
 85  
     /** {@inheritDoc} */
 86  
     @Override
 87  
     public Class<?> getType(ELContext context, Object base, Object property) {
 88  
         // only resolve at the root of the context
 89  3
         if (base != null) {
 90  1
             return null;
 91  
         }
 92  
 
 93  2
         Class<?> retValue = null;
 94  2
         if (requestBeanInfo.getProperties(Request.class).contains(property)) {
 95  1
             Request request = (Request) context
 96  
                     .getContext(Request.class);
 97  1
             retValue = beanElResolver.getType(context, request, property);
 98  1
         } else if (requestBeanInfo.getProperties(ApplicationContext.class).contains(property)) {
 99  1
             ApplicationContext applicationContext = (ApplicationContext) context
 100  
                     .getContext(ApplicationContext.class);
 101  1
             retValue = beanElResolver.getType(context, applicationContext, property);
 102  
         }
 103  
 
 104  2
         if (retValue != null) {
 105  2
             context.setPropertyResolved(true);
 106  
         }
 107  
 
 108  2
         return retValue;
 109  
     }
 110  
 
 111  
     /** {@inheritDoc} */
 112  
     @Override
 113  
     public Object getValue(ELContext context, Object base, Object property) {
 114  
         // only resolve at the root of the context
 115  19
         if (base != null) {
 116  9
             return null;
 117  
         }
 118  
 
 119  10
         Object retValue = null;
 120  
 
 121  10
         if (requestBeanInfo.getProperties(Request.class).contains(property)) {
 122  1
             Request request = (Request) context
 123  
                     .getContext(Request.class);
 124  1
             retValue = beanElResolver.getValue(context, request, property);
 125  1
         } else if (requestBeanInfo.getProperties(ApplicationContext.class)
 126  
                 .contains(property)) {
 127  1
             ApplicationContext applicationContext = (ApplicationContext) context
 128  
                     .getContext(ApplicationContext.class);
 129  1
             retValue = beanElResolver.getValue(context, applicationContext, property);
 130  
         }
 131  
 
 132  10
         if (retValue != null) {
 133  2
             context.setPropertyResolved(true);
 134  
         }
 135  
 
 136  10
         return retValue;
 137  
     }
 138  
 
 139  
     /** {@inheritDoc} */
 140  
     @Override
 141  
     public boolean isReadOnly(ELContext context, Object base, Object property) {
 142  2
         if (context == null) {
 143  1
             throw new NullPointerException();
 144  
         }
 145  
 
 146  1
         return true;
 147  
     }
 148  
 
 149  
     /** {@inheritDoc} */
 150  
     @Override
 151  
     public void setValue(ELContext context, Object base, Object property,
 152  
             Object value) {
 153  
         // Does nothing for the moment.
 154  1
     }
 155  
 }