1 /* ServiceContext.java -- 2 Copyright (C) 2005 Free Software Foundation, Inc. 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 39 package gnu.CORBA.GIOP; 40 41 import gnu.CORBA.CDR.AbstractCdrInput; 42 import gnu.CORBA.CDR.AbstractCdrOutput; 43 44 import org.omg.CORBA.BAD_INV_ORDER; 45 import org.omg.CORBA.BAD_PARAM; 46 import org.omg.CORBA.CompletionStatus; 47 import org.omg.CORBA.portable.IDLEntity; 48 49 /** 50 * Contains the ORB service data being passed. 51 * 52 * @author Audrius Meskauskas (AudriusA@Bioinformatics.org) 53 */ 54 public class ServiceContext 55 implements IDLEntity 56 { 57 /** 58 * Use serialVersionUID for interoperability. 59 */ 60 private static final long serialVersionUID = 1; 61 62 /* Standard values for the context_id. */ 63 public static final int TransactionService = 0; 64 65 /** 66 * Defines code sets, used to encode wide and narrow characters. Required for 67 * messages with data structures, involving wide characters. 68 */ 69 public static final int CodeSets = 1; 70 71 public static final int ChainBypassCheck = 2; 72 73 public static final int ChainBypassInfo = 3; 74 75 public static final int LogicalThreadId = 4; 76 77 public static final int BI_DIR_IIOP = 5; 78 79 public static final int SendingContextRunTime = 6; 80 81 public static final int INVOCATION_POLICIES = 7; 82 83 public static final int FORWARDED_IDENTITY = 8; 84 85 /** 86 * Contains exception details if exception being transferred is other than 87 * System or User exception. javax.rmi uses this context to transfer arbitrary 88 * java exceptions as CORBA value types. 89 */ 90 public static final int UnknownExceptionInfo = 9; 91 92 public static final int RTCorbaPriority = 10; 93 94 public static final int RTCorbaPriorityRange = 11; 95 96 public static final int FT_GROUP_VERSION = 12; 97 98 public static final int FT_REQUEST = 13; 99 100 public static final int ExceptionDetailMessage = 14; 101 102 public static final int SecurityAttributeService = 15; 103 104 public static final int ActivityService = 16; 105 106 /** 107 * The context id (for instance, 0x1 for code sets context). At the moment of 108 * writing, the OMG defines 16 standard values and provides rules to register 109 * the vendor specific context ids. The range 0-4095 is reserved for the 110 * future standard OMG contexts. 111 */ 112 public int context_id; 113 114 /** 115 * The context_data. 116 */ 117 public byte[] context_data; 118 119 /** 120 * Crete unitialised instance. 121 */ ServiceContext()122 public ServiceContext() 123 { 124 } 125 126 /** 127 * Create from omg context. 128 */ ServiceContext(org.omg.IOP.ServiceContext from)129 public ServiceContext(org.omg.IOP.ServiceContext from) 130 { 131 context_id = from.context_id; 132 context_data = from.context_data; 133 } 134 135 /** 136 * Read the context values from the stream. 137 * 138 * @param istream a stream to read from. 139 */ read(AbstractCdrInput istream)140 public static ServiceContext read(AbstractCdrInput istream) 141 { 142 int id = istream.read_ulong(); 143 144 switch (id) 145 { 146 case CodeSetServiceContext.ID: 147 148 CodeSetServiceContext codeset = new CodeSetServiceContext(); 149 codeset.readContext(istream); 150 return codeset; 151 152 default: 153 154 ServiceContext ctx = new ServiceContext(); 155 ctx.context_id = id; 156 ctx.context_data = istream.read_sequence(); 157 return ctx; 158 } 159 } 160 161 /** 162 * Read a sequence of contexts from the input stream. 163 */ readSequence(AbstractCdrInput istream)164 public static ServiceContext[] readSequence(AbstractCdrInput istream) 165 { 166 int size = istream.read_long(); 167 ServiceContext[] value = new gnu.CORBA.GIOP.ServiceContext[size]; 168 for (int i = 0; i < value.length; i++) 169 value[i] = read(istream); 170 return value; 171 } 172 173 /** 174 * Write the context values into the stream. 175 * 176 * @param ostream a stream to write the data to. 177 */ write(AbstractCdrOutput ostream)178 public void write(AbstractCdrOutput ostream) 179 { 180 ostream.write_ulong(context_id); 181 ostream.write_sequence(context_data); 182 } 183 184 /** 185 * Write the sequence of contexts into the input stream. 186 */ writeSequence(AbstractCdrOutput ostream, ServiceContext[] value)187 public static void writeSequence(AbstractCdrOutput ostream, ServiceContext[] value) 188 { 189 ostream.write_long(value.length); 190 for (int i = 0; i < value.length; i++) 191 value[i].write(ostream); 192 } 193 194 /** 195 * Add context to the given array of contexts. 196 */ add(org.omg.IOP.ServiceContext[] cx, org.omg.IOP.ServiceContext service_context, boolean replace)197 public static void add(org.omg.IOP.ServiceContext[] cx, 198 org.omg.IOP.ServiceContext service_context, boolean replace) 199 { 200 int exists = -1; 201 202 for (int i = 0; i < cx.length; i++) 203 if (cx[i].context_id == service_context.context_id) 204 exists = i; 205 206 if (exists < 0) 207 { 208 // Add context. 209 org.omg.IOP.ServiceContext[] n = new org.omg.IOP.ServiceContext[cx.length + 1]; 210 for (int i = 0; i < cx.length; i++) 211 n[i] = cx[i]; 212 n[cx.length] = service_context; 213 } 214 else 215 { 216 // Replace context. 217 if (!replace) 218 throw new BAD_INV_ORDER("Repetetive setting of the context " 219 + service_context.context_id, 15, CompletionStatus.COMPLETED_NO); 220 else 221 cx[exists] = service_context; 222 } 223 } 224 225 /** 226 * Add context to the given array of contexts. 227 */ add(ServiceContext[] cx, org.omg.IOP.ServiceContext service_context, boolean replace)228 public static ServiceContext[] add(ServiceContext[] cx, 229 org.omg.IOP.ServiceContext service_context, boolean replace) 230 { 231 int exists = -1; 232 233 for (int i = 0; i < cx.length; i++) 234 if (cx[i].context_id == service_context.context_id) 235 exists = i; 236 237 if (exists < 0) 238 { 239 // Add context. 240 ServiceContext[] n = new ServiceContext[cx.length + 1]; 241 for (int i = 0; i < cx.length; i++) 242 n[i] = cx[i]; 243 n[cx.length] = new ServiceContext(service_context); 244 return n; 245 } 246 else 247 { 248 // Replace context. 249 if (!replace) 250 throw new BAD_INV_ORDER("Repetetive setting of the context " 251 + service_context.context_id, 15, CompletionStatus.COMPLETED_NO); 252 else 253 cx[exists] = new ServiceContext(service_context); 254 return cx; 255 } 256 } 257 258 /** 259 * Find context with the given name in the context array. 260 */ findContext(int ctx_name, org.omg.IOP.ServiceContext[] cx)261 public static org.omg.IOP.ServiceContext findContext(int ctx_name, 262 org.omg.IOP.ServiceContext[] cx) 263 { 264 for (int i = 0; i < cx.length; i++) 265 if (cx[i].context_id == ctx_name) 266 return cx[i]; 267 throw new BAD_PARAM("No context with id " + ctx_name); 268 } 269 270 /** 271 * Find context with the given name in the context array, converting into 272 * org.omg.IOP.ServiceContext. 273 */ findContext(int ctx_name, ServiceContext[] cx)274 public static org.omg.IOP.ServiceContext findContext(int ctx_name, 275 ServiceContext[] cx) 276 { 277 for (int i = 0; i < cx.length; i++) 278 if (cx[i].context_id == ctx_name) 279 return new org.omg.IOP.ServiceContext(ctx_name, cx[i].context_data); 280 throw new BAD_PARAM("No context with id " + ctx_name); 281 } 282 283 /** 284 * Find context with the given name in the context array without conversions. 285 */ find(int ctx_name, ServiceContext[] cx)286 public static ServiceContext find(int ctx_name, ServiceContext[] cx) 287 { 288 for (int i = 0; i < cx.length; i++) 289 if (cx[i].context_id == ctx_name) 290 return cx[i]; 291 return null; 292 } 293 294 /** 295 * Return a string representation. 296 */ toString()297 public String toString() 298 { 299 return "ctx " + context_id + ", size " + context_data.length; 300 } 301 } 302