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1
15 package com.openedit.modules.reflect;
16
17 import java.beans.IntrospectionException  ;
18 import java.beans.Introspector ;
19 import java.beans.MethodDescriptor ;
20 import java.lang.reflect.InvocationTargetException ;
21 import java.lang.reflect.Method ;
22 import java.util.ArrayList ;
23 import java.util.Iterator ;
24 import java.util.List ;
25 import java.util.Set ;
26
27 import com.openedit.OpenEditException;
28 import com.openedit.WebPageRequest;
29 import com.openedit.modules.BaseModule;
30
31
37 public class Reflector extends BaseModule
38 {
39 public void reflectOnSessionObjects( WebPageRequest inContext ) throws OpenEditException
40 {
41
42 for (Iterator iter = inContext.getParameterMap().keySet().iterator(); iter.hasNext();)
43 {
44 String key = (String ) iter.next();
45 int dotIndex = key.indexOf('.');
46 if (dotIndex > 0)
47 {
48 String sessionObjectKey = key.substring(0, dotIndex);
49 Object sessionObject = inContext.getSessionValue(sessionObjectKey);
50 if (sessionObject == null)
51 {
52 return;
53 }
54 String methodName = key.substring(dotIndex + 1, key.length());
55 List methods = findMethods(sessionObject, methodName);
56 for ( Iterator iterator = methods.iterator(); iterator.hasNext(); )
57 {
58 Method method = (Method ) iterator.next();
59 try
60 {
61 invokeMethod(inContext, method, sessionObject);
62 }
63 catch (Exception ex)
64 {
65 if ( ex instanceof OpenEditException)
67 {
68 throw (OpenEditException)ex;
69 }
70 throw new OpenEditException(ex);
71 }
72 }
73 }
74 }
75
76 }
77
78
84 public List findMethods(Object inObject, String inMethodName)
85 {
86 List methods = new ArrayList ();
87 MethodDescriptor [] methodDescriptors;
88 try
89 {
90 methodDescriptors = Introspector.getBeanInfo(inObject.getClass()).getMethodDescriptors();
91 }
92 catch (IntrospectionException e)
93 {
94 return methods;
95 }
96 for (int i = 0; i < methodDescriptors.length; i++)
97 {
98 if ( methodDescriptors[i].getName().equals( inMethodName ) )
99 {
100 methods.add( methodDescriptors[i].getMethod() );
101 }
102 }
103 return methods;
104 }
105
106 protected void invokeMethod(WebPageRequest inContext, Method method, Object sessionObject) throws Exception
107 {
108 try
109 {
110 method.invoke(sessionObject, new Object [] { inContext });
111 }
112 catch (InvocationTargetException ite)
113 {
114 Throwable throwable = ite.getTargetException();
115 if (throwable instanceof Exception )
116 {
117 throw (Exception ) throwable;
118 }
119
125 else if (throwable instanceof Error )
126 {
127 throw (Error ) throwable;
128 }
129 else
130 {
131 throw new OpenEditException(throwable.getMessage());
132 }
133 }
134
135 }
136 public void reflectOnRequestParameters(WebPageRequest inContext, Object inObject) throws Exception
137 {
138 Set keys = inContext.getParameterMap().keySet();
139 for (Iterator iter = keys.iterator(); iter.hasNext();)
140 {
141 String key = (String ) iter.next();
142 Object value;
143 List methods = findMethods( inObject, key );
144
145 for ( Iterator iterator = methods.iterator(); iterator.hasNext(); )
146 {
147 Method method = (Method ) iterator.next();
148
149 Class [] parameterTypes = method.getParameterTypes();
150 if ( parameterTypes.length == 1 )
151 {
152 Class parameterType = parameterTypes[0];
153 if ( parameterType.equals( String .class ) )
154 {
155 value = inContext.getRequestParameter( key );
156 }
157 else if ( parameterType.equals( String [].class ) )
158 {
159 value = inContext.getRequestParameters( key );
160 }
161 else if ( parameterType.equals( int.class ) )
162 {
163 value = new Integer ( inContext.getRequestParameter( key ) );
164 }
165 else if ( parameterType.equals( long.class ) )
166 {
167 value = new Long ( inContext.getRequestParameter( key ) );
168 }
169 else if ( parameterType.equals( double.class ) )
170 {
171 value = new Double ( inContext.getRequestParameter( key ) );
172 }
173 else if ( parameterType.equals( byte.class ) )
174 {
175 value = new Byte ( inContext.getRequestParameter( key ) );
176 }
177 else if ( parameterTypes.equals( boolean.class ) )
178 {
179 value = new Boolean ( inContext.getRequestParameter( key ) );
180 }
181 else
182 {
183 continue;
184 }
185
186 method.invoke( inObject, new Object [] { value } );
187 }
188 }
189 }
190 }
191
192 }
193 |
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