1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34 package info.magnolia.content2bean.impl;
35
36 import info.magnolia.cms.core.SystemProperty;
37 import info.magnolia.content2bean.Content2BeanTransformer;
38 import info.magnolia.content2bean.PropertyTypeDescriptor;
39 import info.magnolia.content2bean.TypeDescriptor;
40 import info.magnolia.content2bean.TypeMapping;
41 import info.magnolia.objectfactory.ClassFactory;
42 import info.magnolia.objectfactory.Classes;
43
44 import java.beans.PropertyDescriptor;
45 import java.lang.reflect.Method;
46 import java.util.Collection;
47 import java.util.HashMap;
48 import java.util.Map;
49
50 import javax.inject.Singleton;
51
52 import org.apache.commons.beanutils.PropertyUtils;
53 import org.apache.commons.lang3.StringUtils;
54 import org.slf4j.Logger;
55 import org.slf4j.LoggerFactory;
56
57
58
59
60
61
62
63 @Singleton
64 public class TypeMappingImpl implements TypeMapping {
65
66 private static Logger log = LoggerFactory.getLogger(TypeMappingImpl.class);
67
68
69
70
71 private final Map<String, PropertyTypeDescriptor> propertyTypes = new HashMap<String, PropertyTypeDescriptor>();
72
73
74
75
76 private final Map<Class<?>, TypeDescriptor> types = new HashMap<Class<?>, TypeDescriptor>();
77
78
79
80
81 public Method getAddMethod(Class<?> type, String name, int numberOfParameters) {
82 name = StringUtils.capitalize(name);
83 Method method = getExactMethod(type, "add" + name, numberOfParameters);
84 if (method == null) {
85 method = getExactMethod(type, "add" + StringUtils.removeEnd(name, "s"), numberOfParameters);
86 }
87
88 if (method == null) {
89 method = getExactMethod(type, "add" + StringUtils.removeEnd(name, "es"), numberOfParameters);
90 }
91
92 if (method == null) {
93 method = getExactMethod(type, "add" + StringUtils.removeEnd(name, "ren"), numberOfParameters);
94 }
95
96 if (method == null) {
97 method = getExactMethod(type, "add" + StringUtils.removeEnd(name, "ies") + "y", numberOfParameters);
98 }
99 return method;
100 }
101
102
103
104
105 @Override
106 public PropertyTypeDescriptor getPropertyTypeDescriptor(Class<?> beanClass, String propName) {
107 PropertyTypeDescriptor dscr;
108 String key = beanClass.getName() + "." + propName;
109
110 dscr = propertyTypes.get(key);
111 if (dscr != null) {
112 return dscr;
113 }
114
115
116
117
118
119
120
121
122
123
124 dscr = new PropertyTypeDescriptor();
125 dscr.setName(propName);
126
127 PropertyDescriptor[] descriptors = PropertyUtils.getPropertyDescriptors(beanClass);
128 for (int i = 0; i < descriptors.length; i++) {
129 PropertyDescriptor descriptor = descriptors[i];
130 if (descriptor.getName().equals(propName)) {
131 Class<?> propertytype = descriptor.getPropertyType();
132 if (propertytype != null) {
133 dscr.setType(getTypeDescriptor(propertytype));
134 }
135 break;
136 }
137 }
138
139 if (dscr.getType() != null) {
140 if (dscr.isMap() || dscr.isCollection()) {
141 int numberOfParameters = dscr.isMap() ? 2 : 1;
142 Method method = getAddMethod(beanClass, propName, numberOfParameters);
143 if (method != null) {
144 dscr.setAddMethod(method);
145 if (dscr.isMap()) {
146 dscr.setCollectionKeyType(getTypeDescriptor(method.getParameterTypes()[0]));
147 dscr.setCollectionEntryType(getTypeDescriptor(method.getParameterTypes()[1]));
148 } else {
149 dscr.setCollectionEntryType(getTypeDescriptor(method.getParameterTypes()[0]));
150 }
151 }
152 }
153 }
154
155
156 propertyTypes.put(key, dscr);
157
158 return dscr;
159 }
160
161 @Override
162 public void addPropertyTypeDescriptor(Class<?> beanClass, String propName, PropertyTypeDescriptor dscr) {
163 propertyTypes.put(beanClass.getName() + "." + propName, dscr);
164 }
165
166 @Override
167 public void addTypeDescriptor(Class<?> beanClass, TypeDescriptor dscr) {
168 types.put(beanClass, dscr);
169 }
170
171 @Override
172 public TypeDescriptor getTypeDescriptor(Class<?> beanClass) {
173 TypeDescriptor dscr = types.get(beanClass);
174
175 if (dscr != null) {
176 return dscr;
177 }
178 dscr = new TypeDescriptor();
179 dscr.setType(beanClass);
180 dscr.setMap(Map.class.isAssignableFrom(beanClass));
181 dscr.setCollection(beanClass.isArray() || Collection.class.isAssignableFrom(beanClass));
182 types.put(beanClass, dscr);
183
184 if (!beanClass.isArray() && !beanClass.isPrimitive()) {
185 Content2BeanTransformer transformer = null;
186 try {
187 transformer = findTransformerByNamingConvention(beanClass);
188 if (transformer == null) {
189 transformer = findTransformerViaProperty(beanClass);
190 }
191 } catch (Exception e) {
192
193 log.debug("No custom transformer class {}Transformer class found", beanClass.getName());
194 }
195 dscr.setTransformer(transformer);
196 }
197 return dscr;
198 }
199
200
201
202
203 protected Content2BeanTransformer findTransformerByNamingConvention(Class<?> beanClass) {
204 final String transformerClassName = beanClass.getName() + "Transformer";
205 try {
206 return instantiateTransformer(beanClass, transformerClassName);
207 } catch (ClassNotFoundException e) {
208 log.debug("No transformer found by naming convention for {} (attempted to load {})", beanClass, transformerClassName);
209 return null;
210 }
211 }
212
213
214
215
216
217
218 protected Content2BeanTransformer findTransformerViaProperty(Class<?> beanClass) throws ClassNotFoundException {
219 final String property = SystemProperty.getProperty(beanClass.getName() + ".transformer");
220 if (property != null) {
221 return instantiateTransformer(beanClass, property);
222 }
223 return null;
224 }
225
226 protected Content2BeanTransformer instantiateTransformer(Class<?> beanClass, String transformerClassName) throws ClassNotFoundException {
227 final ClassFactory classFactory = Classes.getClassFactory();
228 final Class<Content2BeanTransformer> transformerClass = classFactory.forName(transformerClassName);
229
230 if (Content2BeanTransformer.class.isAssignableFrom(transformerClass)) {
231 try {
232 log.debug("Found a custom transformer [{{}}] for [{{}}]", transformerClass, beanClass);
233
234 return classFactory.newInstance(transformerClass);
235 } catch (Exception e) {
236 log.error("Can't instantiate custom transformer [{{}}] for [{{}}]", transformerClass, beanClass, e);
237 }
238 }
239 return null;
240 }
241
242
243
244
245 protected Method getExactMethod(Class<?> type, String name, int numberOfParameters) {
246 Method[] methods = type.getMethods();
247 for (int i = 0; i < methods.length; i++) {
248 Method method = methods[i];
249 if (method.getName().equals(name)) {
250
251
252
253 if (method.getParameterTypes().length == numberOfParameters) {
254 return method;
255 }
256 }
257 }
258 return null;
259 }
260
261 }