| 1 | /* |
| 2 | |
| 3 | Derby - Class org.apache.derby.client.net.NetXAConnectionReply |
| 4 | |
| 5 | Copyright (c) 2001, 2005 The Apache Software Foundation or its licensors, where applicable. |
| 6 | |
| 7 | Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | you may not use this file except in compliance with the License. |
| 9 | You may obtain a copy of the License at |
| 10 | |
| 11 | http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | |
| 13 | Unless required by applicable law or agreed to in writing, software |
| 14 | distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | See the License for the specific language governing permissions and |
| 17 | limitations under the License. |
| 18 | |
| 19 | */ |
| 20 | |
| 21 | package org.apache.derby.client.net; |
| 22 | |
| 23 | import javax.transaction.xa.XAResource; |
| 24 | import javax.transaction.xa.Xid; |
| 25 | |
| 26 | import org.apache.derby.client.am.ConnectionCallbackInterface; |
| 27 | import org.apache.derby.client.am.DisconnectException; |
| 28 | |
| 29 | public class NetXAConnectionReply extends NetResultSetReply { |
| 30 | NetXAConnectionReply(NetAgent netAgent, int bufferSize) { |
| 31 | super(netAgent, bufferSize); |
| 32 | } |
| 33 | //----------------------------- entry points --------------------------------- |
| 34 | |
| 35 | |
| 36 | public void readLocalXAStart(ConnectionCallbackInterface connection) throws DisconnectException { |
| 37 | } |
| 38 | |
| 39 | public void readLocalXACommit(ConnectionCallbackInterface connection) throws DisconnectException { |
| 40 | |
| 41 | startSameIdChainParse(); |
| 42 | parseSYNCCTLreply(connection); |
| 43 | endOfSameIdChainData(); |
| 44 | |
| 45 | NetXACallInfo callInfo = |
| 46 | netAgent_.netConnection_.xares_.callInfoArray_[netAgent_.netConnection_.currXACallInfoOffset_]; |
| 47 | callInfo.xaInProgress_ = false; |
| 48 | callInfo.xaWasSuspended = false; |
| 49 | connection.completeLocalCommit(); |
| 50 | } |
| 51 | |
| 52 | public void readLocalXARollback(ConnectionCallbackInterface connection) throws DisconnectException { |
| 53 | startSameIdChainParse(); |
| 54 | parseSYNCCTLreply(connection); |
| 55 | endOfSameIdChainData(); |
| 56 | connection.completeLocalRollback(); |
| 57 | } |
| 58 | |
| 59 | protected void readXaStartUnitOfWork(NetConnection conn) throws DisconnectException { |
| 60 | startSameIdChainParse(); |
| 61 | parseSYNCCTLreply(conn); |
| 62 | endOfSameIdChainData(); |
| 63 | } |
| 64 | |
| 65 | protected int readXaEndUnitOfWork(NetConnection conn) throws DisconnectException { |
| 66 | NetXACallInfo callInfo = conn.xares_.callInfoArray_[conn.currXACallInfoOffset_]; |
| 67 | int xaFlags = callInfo.xaFlags_; |
| 68 | |
| 69 | startSameIdChainParse(); |
| 70 | parseSYNCCTLreply(conn); |
| 71 | endOfSameIdChainData(); |
| 72 | if (xaFlags == XAResource.TMFAIL) { |
| 73 | return javax.transaction.xa.XAException.XA_RBROLLBACK; |
| 74 | } |
| 75 | return javax.transaction.xa.XAResource.XA_OK; |
| 76 | } |
| 77 | |
| 78 | protected int readXaPrepare(NetConnection conn) throws DisconnectException { |
| 79 | startSameIdChainParse(); |
| 80 | int synctype = parseSYNCCTLreply(conn); |
| 81 | endOfSameIdChainData(); |
| 82 | |
| 83 | NetXACallInfo callInfo = conn.xares_.callInfoArray_[conn.currXACallInfoOffset_]; |
| 84 | if (synctype == XAResource.XA_RDONLY) { // xaretval of read-only, make sure flag agrees |
| 85 | callInfo.setReadOnlyTransactionFlag(true); |
| 86 | } else { // xaretval NOT read-only, make sure flag agrees |
| 87 | callInfo.setReadOnlyTransactionFlag(false); |
| 88 | } |
| 89 | return synctype; |
| 90 | } |
| 91 | |
| 92 | protected void readXaCommit(NetConnection conn) throws DisconnectException { |
| 93 | startSameIdChainParse(); |
| 94 | parseSYNCCTLreply(conn); |
| 95 | endOfSameIdChainData(); |
| 96 | |
| 97 | NetXACallInfo callInfo = conn.xares_.callInfoArray_[conn.currXACallInfoOffset_]; |
| 98 | callInfo.xaInProgress_ = false; |
| 99 | conn.completeLocalCommit(); |
| 100 | } |
| 101 | |
| 102 | protected int readXaRollback(NetConnection conn) throws DisconnectException { |
| 103 | startSameIdChainParse(); |
| 104 | parseSYNCCTLreply(conn); |
| 105 | endOfSameIdChainData(); |
| 106 | |
| 107 | NetXACallInfo callInfo = conn.xares_.callInfoArray_[conn.currXACallInfoOffset_]; |
| 108 | callInfo.xaInProgress_ = false; |
| 109 | callInfo.xaWasSuspended = false; |
| 110 | conn.completeLocalRollback(); |
| 111 | |
| 112 | return javax.transaction.xa.XAResource.XA_OK; |
| 113 | } |
| 114 | |
| 115 | protected void readXaRecover(NetConnection conn) throws DisconnectException { |
| 116 | startSameIdChainParse(); |
| 117 | parseSYNCCTLreply(conn); |
| 118 | endOfSameIdChainData(); |
| 119 | } |
| 120 | |
| 121 | protected void readXaForget(NetConnection conn) throws DisconnectException { |
| 122 | startSameIdChainParse(); |
| 123 | parseSYNCCTLreply(conn); |
| 124 | endOfSameIdChainData(); |
| 125 | } |
| 126 | //----------------------helper methods---------------------------------------- |
| 127 | |
| 128 | //--------------------- parse DDM Reply Data-------------------------------------- |
| 129 | |
| 130 | |
| 131 | // The SYNCCRD Reply Mesage |
| 132 | // |
| 133 | // Returned from Server: |
| 134 | // XARETVAL - required |
| 135 | int parseSYNCCRD(ConnectionCallbackInterface connection) throws DisconnectException { |
| 136 | boolean svrcodReceived = false; |
| 137 | int svrcod = CodePoint.SVRCOD_INFO; |
| 138 | int xaretval = 0; |
| 139 | int synctype = 0; |
| 140 | java.util.Hashtable indoubtTransactions = null; |
| 141 | NetConnection conn = netAgent_.netConnection_; |
| 142 | |
| 143 | parseLengthAndMatchCodePoint(CodePoint.SYNCCRD); |
| 144 | pushLengthOnCollectionStack(); |
| 145 | int peekCP = peekCodePoint(); |
| 146 | |
| 147 | while (peekCP != Reply.END_OF_COLLECTION) { |
| 148 | |
| 149 | boolean foundInPass = false; |
| 150 | |
| 151 | if (peekCP == CodePoint.SVRCOD) { |
| 152 | foundInPass = true; |
| 153 | svrcodReceived = checkAndGetReceivedFlag(svrcodReceived); |
| 154 | svrcod = parseSVRCOD(CodePoint.SVRCOD_ERROR, CodePoint.SVRCOD_ERROR); |
| 155 | peekCP = peekCodePoint(); |
| 156 | } |
| 157 | |
| 158 | if (peekCP == CodePoint.XARETVAL) { |
| 159 | foundInPass = true; |
| 160 | xaretval = parseXARETVAL(); |
| 161 | conn.xares_.callInfoArray_[conn.currXACallInfoOffset_].xaRetVal_ = |
| 162 | xaretval; |
| 163 | peekCP = peekCodePoint(); |
| 164 | } |
| 165 | |
| 166 | if (peekCP == CodePoint.SYNCTYPE) { |
| 167 | foundInPass = true; |
| 168 | synctype = parseSYNCTYPE(); |
| 169 | peekCP = peekCodePoint(); |
| 170 | } |
| 171 | |
| 172 | if (peekCP == CodePoint.PRPHRCLST) { |
| 173 | foundInPass = true; |
| 174 | indoubtTransactions = parseIndoubtList(); |
| 175 | conn.setIndoubtTransactions(indoubtTransactions); |
| 176 | peekCP = peekCodePoint(); |
| 177 | } |
| 178 | |
| 179 | if (!foundInPass) { |
| 180 | doPrmnsprmSemantics(peekCP); |
| 181 | } |
| 182 | } |
| 183 | popCollectionStack(); |
| 184 | |
| 185 | |
| 186 | return xaretval; |
| 187 | |
| 188 | } |
| 189 | |
| 190 | // Process XA return value |
| 191 | protected int parseXARETVAL() throws DisconnectException { |
| 192 | parseLengthAndMatchCodePoint(CodePoint.XARETVAL); |
| 193 | return readInt(); |
| 194 | } |
| 195 | |
| 196 | // Process XA return value |
| 197 | protected byte parseSYNCTYPE() throws DisconnectException { |
| 198 | parseLengthAndMatchCodePoint(CodePoint.SYNCTYPE); |
| 199 | return readByte(); |
| 200 | } |
| 201 | |
| 202 | // This method handles the parsing of all command replies and reply data |
| 203 | // for the SYNNCTL command. |
| 204 | protected int parseSYNCCTLreply(ConnectionCallbackInterface connection) throws DisconnectException { |
| 205 | int retval = 0; |
| 206 | int peekCP = peekCodePoint(); |
| 207 | |
| 208 | if (peekCP != CodePoint.SYNCCRD) { |
| 209 | parseSYNCCTLError(peekCP); |
| 210 | return -1; |
| 211 | } |
| 212 | retval = parseSYNCCRD(connection); |
| 213 | |
| 214 | peekCP = peekCodePoint(); |
| 215 | while (peekCP == CodePoint.SQLSTT) { |
| 216 | String s = parseSQLSTT(); |
| 217 | //JCFTMP, need to null out the client list? |
| 218 | netAgent_.netConnection_.xares_.addSpecialRegisters(s); |
| 219 | peekCP = peekCodePoint(); |
| 220 | } |
| 221 | |
| 222 | return retval; |
| 223 | } |
| 224 | |
| 225 | |
| 226 | //------------------------parse DDM Scalars----------------------------- |
| 227 | |
| 228 | |
| 229 | |
| 230 | |
| 231 | private String parseSQLSTT() throws DisconnectException { |
| 232 | parseLengthAndMatchCodePoint(CodePoint.SQLSTT); |
| 233 | return parseSQLSTTGRPNOCMorNOCS(); |
| 234 | } |
| 235 | |
| 236 | private String parseSQLSTTGRPNOCMorNOCS() throws DisconnectException { |
| 237 | int mixedNullInd = readUnsignedByte(); |
| 238 | int singleNullInd = 0; |
| 239 | String sqlsttString = null; |
| 240 | int stringLength = 0; |
| 241 | |
| 242 | if (mixedNullInd == CodePoint.NULLDATA) { |
| 243 | singleNullInd = readUnsignedByte(); |
| 244 | if (singleNullInd == CodePoint.NULLDATA) { |
| 245 | // throw DTAMCHRM |
| 246 | doDtamchrmSemantics(); |
| 247 | } |
| 248 | // read 4-byte length |
| 249 | stringLength = readInt(); |
| 250 | // read sqlstt string |
| 251 | sqlsttString = readString(stringLength, netAgent_.targetTypdef_.getCcsidSbcEncoding()); |
| 252 | } else { |
| 253 | // read 4-byte length |
| 254 | stringLength = readInt(); |
| 255 | // read sqlstt string |
| 256 | sqlsttString = readString(stringLength, netAgent_.targetTypdef_.getCcsidMbcEncoding()); |
| 257 | // read null indicator |
| 258 | singleNullInd = readUnsignedByte(); |
| 259 | } |
| 260 | return sqlsttString; |
| 261 | } |
| 262 | |
| 263 | |
| 264 | protected int parseXIDCNT() throws DisconnectException { |
| 265 | parseLengthAndMatchCodePoint(CodePoint.XIDCNT); |
| 266 | return readUnsignedShort(); |
| 267 | } |
| 268 | |
| 269 | protected Xid parseXID() throws DisconnectException { |
| 270 | parseLengthAndMatchCodePoint(CodePoint.XID); |
| 271 | int formatId = readInt(); |
| 272 | int gtridLen = readInt(); |
| 273 | int bqualLen = readInt(); |
| 274 | byte[] gtrid = readBytes(gtridLen); |
| 275 | byte[] bqual = readBytes(bqualLen); |
| 276 | |
| 277 | return new org.apache.derby.client.ClientXid(formatId, gtrid, bqual); |
| 278 | } |
| 279 | |
| 280 | protected java.util.Hashtable parseIndoubtList() throws DisconnectException { |
| 281 | boolean found = false; |
| 282 | int port = 0; |
| 283 | int numXid = 0; |
| 284 | String sIpAddr = null; |
| 285 | int peekCP = peekCodePoint(); |
| 286 | parseLengthAndMatchCodePoint(CodePoint.PRPHRCLST); |
| 287 | peekCP = peekCodePoint(); |
| 288 | if (peekCP == CodePoint.XIDCNT) { |
| 289 | found = true; |
| 290 | numXid = parseXIDCNT(); |
| 291 | peekCP = peekCodePoint(); |
| 292 | } |
| 293 | |
| 294 | java.util.Hashtable indoubtTransactions = new java.util.Hashtable(); |
| 295 | while (peekCP == CodePoint.XID) { |
| 296 | Xid xid = parseXID(); |
| 297 | indoubtTransactions.put(xid, new NetIndoubtTransaction(xid, null, null, null, sIpAddr, port)); |
| 298 | peekCP = peekCodePoint(); |
| 299 | } |
| 300 | |
| 301 | return indoubtTransactions; |
| 302 | } |
| 303 | |
| 304 | } |
| 305 | |
| 306 | |
| 307 | |