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1
19 package gcc.rmi.iiop;
20
21 import gcc.*;
22 import gcc.util.*;
23 import java.util.HashMap;
24 import java.lang.reflect.*;
25
26 public class IDLEntityHelper implements ObjectHelper
27 {
28 private static Class[] EMPTY_CLASS_ARRAY = {};
29
30 private static Object[] EMPTY_OBJECT_ARRAY = {};
31
32 private static HashMap _helperMap = new HashMap();
33
34 private Method _id;
35
36 private Method _type;
37
38 private Method _read;
39
40 private Method _write;
41
42 static IDLEntityHelper getInstance(Class theClass)
43 {
44 IDLEntityHelper helper = (IDLEntityHelper)_helperMap.get(theClass);
45 if (helper == null)
46 {
47 synchronized (_helperMap)
48 {
49 helper = (IDLEntityHelper)_helperMap.get(theClass);
50 if (helper == null)
51 {
52 helper = new IDLEntityHelper(theClass);
53 _helperMap.put(theClass, helper);
54 }
55 }
56 }
57 return helper;
58 }
59
60 private IDLEntityHelper(Class theClass)
61 {
62 try
63 {
64 Class helper = ThreadContext.loadClass(theClass.getName() + "Helper", theClass);
65 _id = helper.getDeclaredMethod("id", EMPTY_CLASS_ARRAY);
66 _type = helper.getDeclaredMethod("type", EMPTY_CLASS_ARRAY);
67 _read = helper.getDeclaredMethod("read", new Class[] { org.omg.CORBA.portable.InputStream.class });
68 _write = helper.getDeclaredMethod("write", new Class[] { org.omg.CORBA.portable.OutputStream.class, theClass });
69 }
70 catch (SystemException ex)
71 {
72 throw ex;
73 }
74 catch (Exception ex)
75 {
76 throw new SystemException(ex);
77 }
78 }
79
80 public String id()
81 {
82 try
83 {
84 return (String)_id.invoke(null, EMPTY_OBJECT_ARRAY);
85 }
86 catch (SystemException ex)
87 {
88 throw ex;
89 }
90 catch (Exception ex)
91 {
92 throw new SystemException(ex);
93 }
94 }
95
96 public org.omg.CORBA.TypeCode type()
97 {
98 try
99 {
100 return (org.omg.CORBA.TypeCode)_type.invoke(null, EMPTY_OBJECT_ARRAY);
101 }
102 catch (SystemException ex)
103 {
104 throw ex;
105 }
106 catch (Exception ex)
107 {
108 throw new SystemException(ex);
109 }
110 }
111
112 public Object read(ObjectInputStream input)
113 {
114 try
115 {
116 return _read.invoke(null, new Object[] { input._cdrInput });
117 }
118 catch (SystemException ex)
119 {
120 throw ex;
121 }
122 catch (Exception ex)
123 {
124 throw new SystemException(ex);
125 }
126 }
127
128 public void write(ObjectOutputStream output, Object value)
129 {
130 try
131 {
132 _write.invoke(null, new Object[] { output._cdrOutput, value });
133 }
134 catch (SystemException ex)
135 {
136 throw ex;
137 }
138 catch (Exception ex)
139 {
140 throw new SystemException(ex);
141 }
142 }
143 }
144 |
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