Coverage Report - org.apache.tapestry.annotations.MessageAnnotationWorker
 
Classes in this File Line Coverage Branch Coverage Complexity
MessageAnnotationWorker
100% 
100% 
5
 
 1  
 // Copyright 2005 The Apache Software Foundation
 2  
 //
 3  
 // Licensed under the Apache License, Version 2.0 (the "License");
 4  
 // you may not use this file except in compliance with the License.
 5  
 // You may obtain a copy of the License at
 6  
 //
 7  
 //     http://www.apache.org/licenses/LICENSE-2.0
 8  
 //
 9  
 // Unless required by applicable law or agreed to in writing, software
 10  
 // distributed under the License is distributed on an "AS IS" BASIS,
 11  
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 12  
 // See the License for the specific language governing permissions and
 13  
 // limitations under the License.
 14  
 
 15  
 package org.apache.tapestry.annotations;
 16  
 
 17  
 import java.lang.reflect.Method;
 18  
 import java.lang.reflect.Modifier;
 19  
 
 20  
 import org.apache.hivemind.ApplicationRuntimeException;
 21  
 import org.apache.hivemind.Location;
 22  
 import org.apache.hivemind.service.BodyBuilder;
 23  
 import org.apache.hivemind.service.MethodSignature;
 24  
 import org.apache.tapestry.Tapestry;
 25  
 import org.apache.tapestry.enhance.EnhancementOperation;
 26  
 import org.apache.tapestry.spec.IComponentSpecification;
 27  
 
 28  
 /**
 29  
  * Builds a method that accesses component messages.
 30  
  * 
 31  
  * @author Howard Lewis Ship
 32  
  * @since 4.0
 33  
  */
 34  9
 public class MessageAnnotationWorker implements MethodAnnotationEnhancementWorker
 35  
 {
 36  
 
 37  
     public void performEnhancement(EnhancementOperation op, IComponentSpecification spec,
 38  
             Method method, Location location)
 39  
     {
 40  9
         if (!method.getReturnType().equals(String.class))
 41  1
             throw new ApplicationRuntimeException(AnnotationMessages.returnStringOnly(method
 42  
                     .getReturnType()));
 43  
 
 44  8
         Message message = method.getAnnotation(Message.class);
 45  
 
 46  8
         String keyName = message.value();
 47  
 
 48  8
         if (keyName.equals(""))
 49  7
             keyName = AnnotationUtils.convertMethodNameToKeyName(method.getName());
 50  
 
 51  8
         BodyBuilder builder = new BodyBuilder();
 52  
 
 53  8
         builder.begin();
 54  
 
 55  8
         Class[] parameterTypes = method.getParameterTypes();
 56  8
         int paramCount = Tapestry.size(parameterTypes);
 57  
 
 58  8
         if (paramCount > 0)
 59  
         {
 60  4
             builder.addln("java.lang.Object[] params = new java.lang.Object[{0}];", paramCount);
 61  10
             for (int i = 0; i < paramCount; i++)
 62  
             {
 63  6
                 builder.add("params[{0}] = ", i);
 64  
 
 65  6
                 if (parameterTypes[i].isPrimitive())
 66  3
                     builder.add("($w) ");
 67  
 
 68  
                 // Parameter $0 is this, so $1 is the first real parameter.
 69  
 
 70  6
                 builder.addln("${0};", i + 1);
 71  
             }
 72  
         }
 73  
 
 74  8
         builder.add("return getMessages().");
 75  
 
 76  8
         if (paramCount == 0)
 77  4
             builder.addln("getMessage(\"{0}\");", keyName);
 78  
         else
 79  4
             builder.addln("format(\"{0}\", params);", keyName);
 80  
 
 81  8
         builder.end();
 82  
 
 83  8
         op.addMethod(Modifier.PUBLIC, new MethodSignature(method), builder.toString(), location);
 84  
 
 85  8
         if (isGetter(method))
 86  1
             op.claimReadonlyProperty(AnnotationUtils.getPropertyName(method));
 87  8
     }
 88  
 
 89  
     boolean isGetter(Method method)
 90  
     {
 91  
         // We already know the return type is String
 92  
 
 93  8
         return method.getName().startsWith("get") && method.getParameterTypes().length == 0;
 94  
     }
 95  
 }