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1
7
8 package com.sun.corba.se.spi.servicecontext;
9
10 import org.omg.CORBA.BAD_PARAM  ;
11 import org.omg.CORBA_2_3.portable.InputStream ;
12 import com.sun.corba.se.spi.servicecontext.ServiceContext ;
13 import java.lang.reflect.InvocationTargetException ;
14 import java.lang.reflect.Modifier ;
15 import java.lang.reflect.Field ;
16 import java.lang.reflect.Constructor ;
17 import com.sun.corba.se.spi.ior.iiop.GIOPVersion;
18 import com.sun.corba.se.spi.orb.ORB ;
19 import com.sun.corba.se.impl.orbutil.ORBUtility ;
20
21
23 public class ServiceContextData {
24 private void dprint( String msg )
25 {
26 ORBUtility.dprint( this, msg ) ;
27 }
28
29 private void throwBadParam( String msg, Throwable exc )
30 {
31 BAD_PARAM error = new BAD_PARAM ( msg ) ;
32 if (exc != null)
33 error.initCause( exc ) ;
34 throw error ;
35 }
36
37 public ServiceContextData( Class cls )
38 {
39 if (ORB.ORBInitDebug)
40 dprint( "ServiceContextData constructor called for class " + cls ) ;
41
42 scClass = cls ;
43
44 try {
45 if (ORB.ORBInitDebug)
46 dprint( "Finding constructor for " + cls ) ;
47
48 Class [] args = new Class [2] ;
50 args[0] = InputStream .class ;
51 args[1] = GIOPVersion.class;
52 try {
53 scConstructor = cls.getConstructor( args ) ;
54 } catch (NoSuchMethodException nsme) {
55 throwBadParam( "Class does not have an InputStream constructor", nsme ) ;
56 }
57
58 if (ORB.ORBInitDebug)
59 dprint( "Finding SERVICE_CONTEXT_ID field in " + cls ) ;
60
61 Field fld = null ;
63 try {
64 fld = cls.getField( "SERVICE_CONTEXT_ID" ) ;
65 } catch (NoSuchFieldException nsfe) {
66 throwBadParam( "Class does not have a SERVICE_CONTEXT_ID member", nsfe ) ;
67 } catch (SecurityException se) {
68 throwBadParam( "Could not access SERVICE_CONTEXT_ID member", se ) ;
69 }
70
71 if (ORB.ORBInitDebug)
72 dprint( "Checking modifiers of SERVICE_CONTEXT_ID field in " + cls ) ;
73
74 int mod = fld.getModifiers() ;
75 if (!Modifier.isPublic(mod) || !Modifier.isStatic(mod) ||
76 !Modifier.isFinal(mod) )
77 throwBadParam( "SERVICE_CONTEXT_ID field is not public static final", null ) ;
78
79 if (ORB.ORBInitDebug)
80 dprint( "Getting value of SERVICE_CONTEXT_ID in " + cls ) ;
81
82 try {
83 scId = fld.getInt( null ) ;
84 } catch (IllegalArgumentException iae) {
85 throwBadParam( "SERVICE_CONTEXT_ID not convertible to int", iae ) ;
86 } catch (IllegalAccessException iae2) {
87 throwBadParam( "Could not access value of SERVICE_CONTEXT_ID", iae2 ) ;
88 }
89 } catch (BAD_PARAM nssc) {
90 if (ORB.ORBInitDebug)
91 dprint( "Exception in ServiceContextData constructor: " + nssc ) ;
92 throw nssc ;
93 } catch (Throwable thr) {
94 if (ORB.ORBInitDebug)
95 dprint( "Unexpected Exception in ServiceContextData constructor: " +
96 thr ) ;
97 }
98
99 if (ORB.ORBInitDebug)
100 dprint( "ServiceContextData constructor completed" ) ;
101 }
102
103
106 public ServiceContext makeServiceContext(InputStream is, GIOPVersion gv)
107 {
108 Object [] args = new Object [2];
109 args[0] = is ;
110 args[1] = gv;
111 ServiceContext sc = null ;
112
113 try {
114 sc = (ServiceContext)(scConstructor.newInstance( args )) ;
115 } catch (IllegalArgumentException iae) {
116 throwBadParam( "InputStream constructor argument error", iae ) ;
117 } catch (IllegalAccessException iae2) {
118 throwBadParam( "InputStream constructor argument error", iae2 ) ;
119 } catch (InstantiationException ie) {
120 throwBadParam( "InputStream constructor called for abstract class", ie ) ;
121 } catch (InvocationTargetException ite) {
122 throwBadParam( "InputStream constructor threw exception " +
123 ite.getTargetException(), ite ) ;
124 }
125
126 return sc ;
127 }
128
129 int getId()
130 {
131 return scId ;
132 }
133
134 public String toString()
135 {
136 return "ServiceContextData[ scClass=" + scClass + " scConstructor=" +
137 scConstructor + " scId=" + scId + " ]" ;
138 }
139
140 private Class scClass ;
141 private Constructor scConstructor ;
142 private int scId ;
143 }
144
145 |
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