|
1 package org.picocontainer.defaults;
2
3 import org.picocontainer.ComponentAdapter;
4 import org.picocontainer.PicoContainer;
5 import org.picocontainer.PicoInitializationException;
6 import org.picocontainer.PicoIntrospectionException;
7
8 import java.io.File  ;
9 import java.lang.reflect.Method ;
10 import java.net.MalformedURLException ;
11 import java.net.URL ;
12 import java.util.Iterator ;
13 import java.util.Map ;
14 import java.util.Set ;
15
16
34 public class BeanPropertyComponentAdapter extends DecoratingComponentAdapter {
35 private Map properties;
36 private transient Map setters = null;
37
38
44 public BeanPropertyComponentAdapter(ComponentAdapter delegate) throws PicoInitializationException {
45 super(delegate);
46 }
47
48
60 public Object getComponentInstance(PicoContainer container) throws PicoInitializationException, PicoIntrospectionException, AssignabilityRegistrationException, NotConcreteRegistrationException {
61 final Object componentInstance = super.getComponentInstance(container);
62 if (setters == null) {
63 setters = new SetterIntrospector().getSetters(getComponentImplementation());
64 }
65
66 if (properties != null) {
67 Set propertyNames = properties.keySet();
68 for (Iterator iterator = propertyNames.iterator(); iterator.hasNext();) {
69 final String propertyName = (String ) iterator.next();
70 final String propertyValue = (String ) properties.get(propertyName);
71 Method setter = (Method ) setters.get(propertyName);
72 Object value = null;
73 try {
74 value = convertType(container, setter, propertyValue);
75 } catch (ClassNotFoundException e) {
76 throw new PicoInvocationTargetInitializationException(e);
77 }
78 try {
79 setter.invoke(componentInstance, new Object []{value});
80 } catch (final Exception e) {
81 throw new PicoInitializationException("Failed to set property " + propertyName + " to " + propertyValue + ": " + e.getMessage(), e);
82 }
83 }
84 }
85 return componentInstance;
86 }
87
88 private Object convertType(PicoContainer container, Method setter, String propertyValue) throws ClassNotFoundException {
89 if (propertyValue == null) {
90 return null;
91 }
92 Class type = setter.getParameterTypes()[0];
93 String typeName = type.getName();
94
95 Object result = convert(typeName, propertyValue, Thread.currentThread().getContextClassLoader());
96
97 if (result == null) {
98
99
103 if (container != null) {
105 Object component = container.getComponentInstance(propertyValue);
106 if (component != null && type.isAssignableFrom(component.getClass())) {
107 return component;
108 }
109 }
110 }
111 return result;
112 }
113
114
123 public static Object convert(String typeName, String value, ClassLoader classLoader) throws ClassNotFoundException {
124 if (typeName.equals(Boolean .class.getName()) || typeName.equals(boolean.class.getName())) {
125 return Boolean.valueOf(value);
126 } else if (typeName.equals(Byte .class.getName()) || typeName.equals(byte.class.getName())) {
127 return Byte.valueOf(value);
128 } else if (typeName.equals(Short .class.getName()) || typeName.equals(short.class.getName())) {
129 return Short.valueOf(value);
130 } else if (typeName.equals(Integer .class.getName()) || typeName.equals(int.class.getName())) {
131 return Integer.valueOf(value);
132 } else if (typeName.equals(Long .class.getName()) || typeName.equals(long.class.getName())) {
133 return Long.valueOf(value);
134 } else if (typeName.equals(Float .class.getName()) || typeName.equals(float.class.getName())) {
135 return Float.valueOf(value);
136 } else if (typeName.equals(Double .class.getName()) || typeName.equals(double.class.getName())) {
137 return Double.valueOf(value);
138 } else if (typeName.equals(Character .class.getName()) || typeName.equals(char.class.getName())) {
139 return new Character (value.toCharArray()[0]);
140 } else if (typeName.equals(String .class.getName()) || typeName.equals("string")) {
141 return value;
142 } else if (typeName.equals(File .class.getName()) || typeName.equals("file")) {
143 return new File (value);
144 } else if (typeName.equals(URL .class.getName()) || typeName.equals("url")) {
145 try {
146 return new URL (value);
147 } catch (MalformedURLException e) {
148 throw new PicoInitializationException(e);
149 }
150 } else if (typeName.equals(Class .class.getName()) || typeName.equals("class")) {
151 return classLoader.loadClass(value);
152 }
153 return null;
154 }
155
156
161 public void setProperties(Map properties) {
162 this.properties = properties;
163 }
164 } |
Popular Tags |
Java API By Example, From Geeks To Geeks.