Coverage Report - org.dozer.loader.xml.ELEngine
 
Classes in this File Line Coverage Branch Coverage Complexity
ELEngine
87%
21/24
N/A
1
ELEngine$Functions
100%
5/5
N/A
1
ELEngine$SimpleContext
100%
8/8
N/A
1
ELEngine$Variables
100%
4/4
N/A
1
 
 1  
 /**
 2  
  * Copyright 2005-2013 Dozer Project
 3  
  *
 4  
  * Licensed under the Apache License, Version 2.0 (the "License");
 5  
  * you may not use this file except in compliance with the License.
 6  
  * You may obtain a copy of the License at
 7  
  *
 8  
  *      http://www.apache.org/licenses/LICENSE-2.0
 9  
  *
 10  
  * Unless required by applicable law or agreed to in writing, software
 11  
  * distributed under the License is distributed on an "AS IS" BASIS,
 12  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 13  
  * See the License for the specific language governing permissions and
 14  
  * limitations under the License.
 15  
  */
 16  
 package org.dozer.loader.xml;
 17  
 
 18  
 import javax.el.ExpressionFactory;
 19  
 import javax.el.CompositeELResolver;
 20  
 import javax.el.ArrayELResolver;
 21  
 import javax.el.ListELResolver;
 22  
 import javax.el.MapELResolver;
 23  
 import javax.el.BeanELResolver;
 24  
 import javax.el.ELContext;
 25  
 import javax.el.ValueExpression;
 26  
 import javax.el.ELResolver;
 27  
 import javax.el.FunctionMapper;
 28  
 import javax.el.VariableMapper;
 29  
 import java.util.HashMap;
 30  
 import java.util.Map;
 31  
 import java.lang.reflect.Method;
 32  
 
 33  
 /**
 34  
  * @author Dmitry Buzdin
 35  
  */
 36  
 public class ELEngine {
 37  
 
 38  
   private final ExpressionFactory factory;
 39  
   private final CompositeELResolver resolver;
 40  
   private ELContext context;
 41  
 
 42  10
   public ELEngine() {
 43  10
     factory = ExpressionFactory.newInstance();
 44  
 
 45  10
     resolver = new CompositeELResolver();
 46  10
     resolver.add(new ArrayELResolver());
 47  10
     resolver.add(new ListELResolver());
 48  10
     resolver.add(new MapELResolver());
 49  10
     resolver.add(new BeanELResolver());
 50  10
   }
 51  
 
 52  
   public void init() {
 53  10
     context = new SimpleContext(resolver);
 54  10
   }
 55  
 
 56  
   public <T> void setVariable(String key, T value) {
 57  14
     setVariable(key, value, value.getClass());
 58  14
   }
 59  
 
 60  
   public <T> void setVariable(String key, T value, Class<? extends T> type) {
 61  15
     VariableMapper variableMapper = context.getVariableMapper();
 62  15
     ValueExpression valueExpression = factory.createValueExpression(value, type);
 63  15
     variableMapper.setVariable(key, valueExpression);
 64  15
   }
 65  
 
 66  
   public void setFunction(String prefix, Method method) {
 67  1
     Functions functions = (Functions) context.getFunctionMapper();
 68  1
     functions.setFunction(prefix, method.getName(), method);
 69  1
   }
 70  
 
 71  
   public void setFunction(String prefix, String name, Method method) {
 72  0
     Functions functions = (Functions) context.getFunctionMapper();
 73  0
     functions.setFunction(prefix, name, method);
 74  0
   }
 75  
 
 76  
   public String resolve(String expression) {
 77  836794
     ValueExpression expr = factory.createValueExpression(context, expression, String.class);
 78  836794
     return (String) expr.getValue(context);
 79  
   }
 80  
 
 81  
   static class SimpleContext extends ELContext {
 82  
 
 83  10
     private Functions functions = new Functions();
 84  10
     private Variables variables = new Variables();
 85  
     private ELResolver resolver;
 86  
 
 87  10
     SimpleContext(ELResolver resolver) {
 88  10
       this.resolver = resolver;
 89  10
     }
 90  
 
 91  
     public ELResolver getELResolver() {
 92  4
       return resolver;
 93  
     }
 94  
 
 95  
     @Override
 96  
     public FunctionMapper getFunctionMapper() {
 97  836795
       return functions;
 98  
     }
 99  
 
 100  
     @Override
 101  
     public VariableMapper getVariableMapper() {
 102  836809
       return variables;
 103  
     }
 104  
 
 105  
   }
 106  
 
 107  10
   static class Functions extends FunctionMapper {
 108  10
     final Map<String, Method> map = new HashMap<String, Method>();
 109  
 
 110  
     @Override
 111  
     public Method resolveFunction(String prefix, String localName) {
 112  1
       return map.get(prefix + ":" + localName);
 113  
     }
 114  
 
 115  
     public void setFunction(String prefix, String localName, Method method) {
 116  1
       map.put(prefix + ":" + localName, method);
 117  1
     }
 118  
   }
 119  
 
 120  10
   static class Variables extends VariableMapper {
 121  10
     final Map<String, ValueExpression> map = new HashMap<String, ValueExpression>();
 122  
 
 123  
     @Override
 124  
     public ValueExpression resolveVariable(String variable) {
 125  25
       return map.get(variable);
 126  
     }
 127  
 
 128  
     @Override
 129  
     public ValueExpression setVariable(String variable, ValueExpression expression) {
 130  15
       return map.put(variable, expression);
 131  
     }
 132  
   }
 133  
 
 134  
 
 135  
 }