| 1 | /* |
| 2 | |
| 3 | Derby - Class org.apache.derby.client.net.NetPackageReply |
| 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 org.apache.derby.client.am.DisconnectException; |
| 24 | import org.apache.derby.client.am.ClientMessageId; |
| 25 | import org.apache.derby.shared.common.reference.SQLState; |
| 26 | |
| 27 | public class NetPackageReply extends NetConnectionReply { |
| 28 | NetPackageReply(NetAgent netAgent, int bufferSize) { |
| 29 | super(netAgent, bufferSize); |
| 30 | } |
| 31 | |
| 32 | |
| 33 | NetSqlca parseSqlErrorCondition() throws DisconnectException { |
| 34 | parseSQLERRRM(); |
| 35 | parseTypdefsOrMgrlvlovrs(); |
| 36 | NetSqlca netSqlca = parseSQLCARD(null); |
| 37 | return netSqlca; |
| 38 | } |
| 39 | |
| 40 | |
| 41 | // Also called by NetStatementReply |
| 42 | void parseDTAMCHRM() throws DisconnectException { |
| 43 | boolean svrcodReceived = false; |
| 44 | int svrcod = CodePoint.SVRCOD_INFO; |
| 45 | boolean rdbnamReceived = false; |
| 46 | String rdbnam = null; |
| 47 | |
| 48 | parseLengthAndMatchCodePoint(CodePoint.DTAMCHRM); |
| 49 | pushLengthOnCollectionStack(); |
| 50 | int peekCP = peekCodePoint(); |
| 51 | |
| 52 | while (peekCP != Reply.END_OF_COLLECTION) { |
| 53 | |
| 54 | boolean foundInPass = false; |
| 55 | |
| 56 | if (peekCP == CodePoint.SVRCOD) { |
| 57 | foundInPass = true; |
| 58 | svrcodReceived = checkAndGetReceivedFlag(svrcodReceived); |
| 59 | svrcod = parseSVRCOD(CodePoint.SVRCOD_ERROR, CodePoint.SVRCOD_ERROR); |
| 60 | peekCP = peekCodePoint(); |
| 61 | } |
| 62 | |
| 63 | if (peekCP == CodePoint.RDBNAM) { |
| 64 | foundInPass = true; |
| 65 | rdbnamReceived = checkAndGetReceivedFlag(rdbnamReceived); |
| 66 | rdbnam = parseRDBNAM(true); |
| 67 | peekCP = peekCodePoint(); |
| 68 | } |
| 69 | |
| 70 | if (!foundInPass) { |
| 71 | doPrmnsprmSemantics(peekCP); |
| 72 | } |
| 73 | |
| 74 | } |
| 75 | popCollectionStack(); |
| 76 | checkRequiredObjects(svrcodReceived, rdbnamReceived); |
| 77 | |
| 78 | netAgent_.setSvrcod(svrcod); |
| 79 | doDtamchrmSemantics(); |
| 80 | } |
| 81 | |
| 82 | // RDB Update Reply Message indicates that a DDM command resulted |
| 83 | // in an update at the target relational database. If a command |
| 84 | // generated multiple reply messages including an RDBUPDRM, then |
| 85 | // the RDBUPDRM must be the first reply message for the command. |
| 86 | // For each target server, the RDBUPDRM must be returned the first |
| 87 | // time an update is made to the target RDB within a unit of work. |
| 88 | // The target server may optionally return the RDBUPDRM after subsequent |
| 89 | // updates within the UOW. If multiple target RDBs are involved with |
| 90 | // the current UOW and updates are made with any of them, then the RDBUPDRM |
| 91 | // must be returned in response to the first update at each of them. |
| 92 | protected void parseRDBUPDRM() throws DisconnectException { |
| 93 | boolean svrcodReceived = false; |
| 94 | int svrcod = CodePoint.SVRCOD_INFO; |
| 95 | boolean rdbnamReceived = false; |
| 96 | String rdbnam = null; |
| 97 | |
| 98 | parseLengthAndMatchCodePoint(CodePoint.RDBUPDRM); |
| 99 | pushLengthOnCollectionStack(); |
| 100 | |
| 101 | // in XA Global transaction we need to know if we have a read-only |
| 102 | // transaction, if we get a RDBUPDRM this is NOT a read-only transaction |
| 103 | // currently only XAConnections care about read-only transactions, if |
| 104 | // non-XA wants this information they will need to initialize the flag |
| 105 | // at start of UOW |
| 106 | netAgent_.netConnection_.setReadOnlyTransactionFlag(false); |
| 107 | |
| 108 | int peekCP = peekCodePoint(); |
| 109 | |
| 110 | while (peekCP != Reply.END_OF_COLLECTION) { |
| 111 | |
| 112 | boolean foundInPass = false; |
| 113 | |
| 114 | if (peekCP == CodePoint.SVRCOD) { |
| 115 | foundInPass = true; |
| 116 | svrcodReceived = checkAndGetReceivedFlag(svrcodReceived); |
| 117 | svrcod = parseSVRCOD(CodePoint.SVRCOD_INFO, CodePoint.SVRCOD_INFO); |
| 118 | peekCP = peekCodePoint(); |
| 119 | } |
| 120 | |
| 121 | if (peekCP == CodePoint.RDBNAM) { |
| 122 | foundInPass = true; |
| 123 | rdbnamReceived = checkAndGetReceivedFlag(rdbnamReceived); |
| 124 | rdbnam = parseRDBNAM(true); |
| 125 | peekCP = peekCodePoint(); |
| 126 | } |
| 127 | |
| 128 | if (!foundInPass) { |
| 129 | doPrmnsprmSemantics(peekCP); |
| 130 | } |
| 131 | |
| 132 | } |
| 133 | popCollectionStack(); |
| 134 | checkRequiredObjects(svrcodReceived, rdbnamReceived); |
| 135 | |
| 136 | // call an event to indicate the server has been updated |
| 137 | netAgent_.setSvrcod(svrcod); |
| 138 | |
| 139 | } |
| 140 | |
| 141 | // SQL Error Condition Reply Message indicates that an SQL error |
| 142 | // has occurred. It may be sent even though no reply message |
| 143 | // precedes the SQLCARD object that is the normal |
| 144 | // response to a command when an exception occurs. |
| 145 | // The SQLERRM is also used when a BNDSQLSTT command is terminated |
| 146 | // by an INTRRDBRQS command. |
| 147 | // This reply message must precede an SQLCARD object. |
| 148 | // The SQLSTATE is returned in the SQLCARD. |
| 149 | // |
| 150 | // Returned from Server: |
| 151 | // SVRCOD - required (8 - ERROR) |
| 152 | // RDBNAM - optional |
| 153 | // |
| 154 | // Also called by NetResultSetReply and NetStatementReply |
| 155 | void parseSQLERRRM() throws DisconnectException { |
| 156 | boolean svrcodReceived = false; |
| 157 | int svrcod = CodePoint.SVRCOD_INFO; |
| 158 | boolean rdbnamReceived = false; |
| 159 | String rdbnam = null; |
| 160 | |
| 161 | parseLengthAndMatchCodePoint(CodePoint.SQLERRRM); |
| 162 | pushLengthOnCollectionStack(); |
| 163 | int peekCP = peekCodePoint(); |
| 164 | |
| 165 | while (peekCP != Reply.END_OF_COLLECTION) { |
| 166 | |
| 167 | boolean foundInPass = false; |
| 168 | |
| 169 | if (peekCP == CodePoint.SVRCOD) { |
| 170 | foundInPass = true; |
| 171 | svrcodReceived = checkAndGetReceivedFlag(svrcodReceived); |
| 172 | svrcod = parseSVRCOD(CodePoint.SVRCOD_ERROR, CodePoint.SVRCOD_ERROR); |
| 173 | peekCP = peekCodePoint(); |
| 174 | } |
| 175 | |
| 176 | if (peekCP == CodePoint.RDBNAM) { |
| 177 | foundInPass = true; |
| 178 | rdbnamReceived = checkAndGetReceivedFlag(rdbnamReceived); |
| 179 | rdbnam = parseRDBNAM(true); |
| 180 | peekCP = peekCodePoint(); |
| 181 | } |
| 182 | |
| 183 | if (!foundInPass) { |
| 184 | doPrmnsprmSemantics(peekCP); |
| 185 | } |
| 186 | |
| 187 | } |
| 188 | popCollectionStack(); |
| 189 | checkRequiredObjects(svrcodReceived); |
| 190 | |
| 191 | // move into a method |
| 192 | netAgent_.setSvrcod(svrcod); |
| 193 | } |
| 194 | |
| 195 | //--------------------- parse DDM Reply Data-------------------------------------- |
| 196 | |
| 197 | //------------------------parse DDM Scalars----------------------------- |
| 198 | |
| 199 | // RDB Package Name and Consistency token Scalar Object specifies the |
| 200 | // fully qualified name of a relational database package and its |
| 201 | // consistency token. |
| 202 | protected Object parsePKGNAMCT(boolean skip) throws DisconnectException { |
| 203 | parseLengthAndMatchCodePoint(CodePoint.PKGNAMCT); |
| 204 | if (skip) { |
| 205 | skipBytes(); |
| 206 | return null; |
| 207 | } |
| 208 | agent_.accumulateChainBreakingReadExceptionAndThrow(new DisconnectException(agent_, |
| 209 | new ClientMessageId(SQLState.DRDA_COMMAND_NOT_IMPLEMENTED), |
| 210 | "parsePKGNAMCT")); |
| 211 | return null; // to make compiler happy |
| 212 | } |
| 213 | } |