| 1 | /* |
| 2 | |
| 3 | Derby - Class org.apache.derby.client.net.NetStatement |
| 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.ColumnMetaData; |
| 24 | import org.apache.derby.client.am.Section; |
| 25 | import org.apache.derby.client.am.SqlException; |
| 26 | import org.apache.derby.client.am.Statement; |
| 27 | import org.apache.derby.jdbc.ClientDriver; |
| 28 | |
| 29 | public class NetStatement implements org.apache.derby.client.am.MaterialStatement { |
| 30 | |
| 31 | Statement statement_; |
| 32 | |
| 33 | |
| 34 | // Alias for (NetConnection) statement_.connection |
| 35 | NetConnection netConnection_; |
| 36 | |
| 37 | // Alias for (NetAgent) statement_.agent |
| 38 | NetAgent netAgent_; |
| 39 | |
| 40 | |
| 41 | // If qryrowset is sent on opnqry then it also needs to be sent on every subsequent cntqry. |
| 42 | public boolean qryrowsetSentOnOpnqry_ = false; |
| 43 | |
| 44 | //---------------------constructors/finalizer--------------------------------- |
| 45 | |
| 46 | private NetStatement() { |
| 47 | initNetStatement(); |
| 48 | } |
| 49 | |
| 50 | private void resetNetStatement() { |
| 51 | initNetStatement(); |
| 52 | } |
| 53 | |
| 54 | private void initNetStatement() { |
| 55 | qryrowsetSentOnOpnqry_ = false; |
| 56 | } |
| 57 | |
| 58 | // Relay constructor for NetPreparedStatement. |
| 59 | NetStatement(org.apache.derby.client.am.Statement statement, NetAgent netAgent, NetConnection netConnection) { |
| 60 | this(); |
| 61 | initNetStatement(statement, netAgent, netConnection); |
| 62 | } |
| 63 | |
| 64 | void resetNetStatement(org.apache.derby.client.am.Statement statement, NetAgent netAgent, NetConnection netConnection) { |
| 65 | resetNetStatement(); |
| 66 | initNetStatement(statement, netAgent, netConnection); |
| 67 | } |
| 68 | |
| 69 | private void initNetStatement(org.apache.derby.client.am.Statement statement, NetAgent netAgent, NetConnection netConnection) { |
| 70 | netAgent_ = netAgent; |
| 71 | netConnection_ = netConnection; |
| 72 | statement_ = statement; |
| 73 | statement_.materialStatement_ = this; |
| 74 | } |
| 75 | |
| 76 | // Called by abstract Connection.createStatement().newStatement() for jdbc 1 statements |
| 77 | NetStatement(NetAgent netAgent, NetConnection netConnection) throws SqlException { |
| 78 | this(ClientDriver.getFactory().newStatement(netAgent, netConnection), |
| 79 | netAgent, |
| 80 | netConnection); |
| 81 | } |
| 82 | |
| 83 | void netReset(NetAgent netAgent, NetConnection netConnection) throws SqlException { |
| 84 | statement_.resetStatement(netAgent, netConnection); |
| 85 | resetNetStatement(statement_, netAgent, netConnection); |
| 86 | } |
| 87 | |
| 88 | public void reset_() { |
| 89 | qryrowsetSentOnOpnqry_ = false; |
| 90 | } |
| 91 | |
| 92 | // Called by abstract Connection.createStatement().newStatement() for jdbc 2 statements with scroll attributes |
| 93 | NetStatement(NetAgent netAgent, NetConnection netConnection, int type, int concurrency, int holdability) throws SqlException { |
| 94 | this(ClientDriver.getFactory().newStatement(netAgent, netConnection, type, concurrency, holdability, java.sql.Statement.NO_GENERATED_KEYS, null), |
| 95 | netAgent, |
| 96 | netConnection); |
| 97 | } |
| 98 | |
| 99 | void resetNetStatement(NetAgent netAgent, NetConnection netConnection, int type, int concurrency, int holdability) throws SqlException { |
| 100 | statement_.resetStatement(netAgent, netConnection, type, concurrency, holdability, java.sql.Statement.NO_GENERATED_KEYS, null); |
| 101 | resetNetStatement(statement_, netAgent, netConnection); |
| 102 | } |
| 103 | |
| 104 | protected void finalize() throws java.lang.Throwable { |
| 105 | super.finalize(); |
| 106 | } |
| 107 | |
| 108 | // ------------------------abstract box car methods----------------------------------------------- |
| 109 | |
| 110 | public void writeSetSpecialRegister_(java.util.ArrayList sqlsttList) throws SqlException { |
| 111 | netAgent_.statementRequest_.writeSetSpecialRegister(sqlsttList); |
| 112 | } |
| 113 | |
| 114 | public void readSetSpecialRegister_() throws SqlException { |
| 115 | netAgent_.statementReply_.readSetSpecialRegister(statement_); |
| 116 | } |
| 117 | |
| 118 | public void writeExecuteImmediate_(String sql, |
| 119 | Section section) throws SqlException { |
| 120 | netAgent_.statementRequest_.writeExecuteImmediate(this, sql, section); |
| 121 | } |
| 122 | |
| 123 | public void readExecuteImmediate_() throws SqlException { |
| 124 | netAgent_.statementReply_.readExecuteImmediate(statement_); |
| 125 | } |
| 126 | |
| 127 | // NOTE: NET processing does not require parameters supplied on the "read-side" so parameter sql is ignored. |
| 128 | public void readExecuteImmediateForBatch_(String sql) throws SqlException { |
| 129 | readExecuteImmediate_(); |
| 130 | } |
| 131 | |
| 132 | public void writePrepareDescribeOutput_(String sql, |
| 133 | Section section) throws SqlException { |
| 134 | netAgent_.statementRequest_.writePrepareDescribeOutput(this, sql, section); |
| 135 | } |
| 136 | |
| 137 | public void readPrepareDescribeOutput_() throws SqlException { |
| 138 | netAgent_.statementReply_.readPrepareDescribeOutput(statement_); |
| 139 | } |
| 140 | |
| 141 | public void writeOpenQuery_(Section section, |
| 142 | int fetchSize, |
| 143 | int resultSetType) |
| 144 | throws SqlException { |
| 145 | netAgent_.statementRequest_.writeOpenQuery(this, |
| 146 | section, |
| 147 | fetchSize, |
| 148 | resultSetType); |
| 149 | } |
| 150 | |
| 151 | public void readOpenQuery_() throws SqlException { |
| 152 | netAgent_.statementReply_.readOpenQuery(statement_); |
| 153 | } |
| 154 | |
| 155 | public void writeExecuteCall_(boolean outputExpected, |
| 156 | String procedureName, |
| 157 | Section section, |
| 158 | int fetchSize, |
| 159 | boolean suppressResultSets, |
| 160 | int resultSetType, |
| 161 | ColumnMetaData parameterMetaData, |
| 162 | Object[] inputs) throws SqlException { |
| 163 | netAgent_.statementRequest_.writeExecuteCall(this, |
| 164 | outputExpected, |
| 165 | procedureName, |
| 166 | section, |
| 167 | fetchSize, |
| 168 | suppressResultSets, |
| 169 | resultSetType, |
| 170 | parameterMetaData, |
| 171 | inputs); |
| 172 | } |
| 173 | |
| 174 | public void readExecuteCall_() throws SqlException { |
| 175 | netAgent_.statementReply_.readExecuteCall(statement_); |
| 176 | } |
| 177 | |
| 178 | public void writePrepare_(String sql, Section section) throws SqlException { |
| 179 | netAgent_.statementRequest_.writePrepare(this, sql, section); |
| 180 | } |
| 181 | |
| 182 | public void readPrepare_() throws SqlException { |
| 183 | netAgent_.statementReply_.readPrepare(statement_); |
| 184 | } |
| 185 | |
| 186 | public void markClosedOnServer_() { |
| 187 | } |
| 188 | } |