Source Code Cross Referenced for SQLExceptionFactory40.java in  » Database-DBMS » db-derby-10.2 » org » apache » derby » impl » jdbc » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.impl.jdbc 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         
003:           Derby - Class org.apache.derby.impl.jdbc.SQLExceptionFactory40
004:         
005:           Licensed to the Apache Software Foundation (ASF) under one or more
006:           contributor license agreements.  See the NOTICE file distributed with
007:           this work for additional information regarding copyright ownership.
008:           The ASF licenses this file to you under the Apache License, Version 2.0
009:           (the "License"); you may not use this file except in compliance with
010:           the License.  You may obtain a copy of the License at
011:         
012:              http://www.apache.org/licenses/LICENSE-2.0
013:         
014:           Unless required by applicable law or agreed to in writing, software
015:           distributed under the License is distributed on an "AS IS" BASIS,
016:           WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017:           See the License for the specific language governing permissions and
018:           limitations under the License.
019:         
020:         */
021:
022:        package org.apache.derby.impl.jdbc;
023:
024:        import java.sql.SQLDataException;
025:        import java.sql.SQLException;
026:        import java.sql.SQLIntegrityConstraintViolationException;
027:        import java.sql.SQLInvalidAuthorizationSpecException;
028:        import java.sql.SQLSyntaxErrorException;
029:        import java.sql.SQLTransactionRollbackException;
030:        import java.sql.SQLTransientConnectionException;
031:        import java.sql.SQLFeatureNotSupportedException;
032:        import org.apache.derby.iapi.error.StandardException;
033:        import org.apache.derby.shared.common.reference.SQLState;
034:
035:        /**
036:         * SQLExceptionFactory40 overwrites getSQLException method
037:         * to return SQLException or one of its sub class
038:         */
039:
040:        public class SQLExceptionFactory40 extends SQLExceptionFactory {
041:
042:            /**
043:             * overwrites super class method to create JDBC4 exceptions      
044:             * SQLSTATE CLASS (prefix)     Exception
045:             * 0A                          java.sql.SQLFeatureNotSupportedException
046:             * 08                          java.sql.SQLTransientConnectionException
047:             * 22                          java.sql.SQLDataException
048:             * 28                          java.sql.SQLInvalidAuthorizationSpecException
049:             * 40                          java.sql.SQLTransactionRollbackException
050:             * 42                          java.sql.SQLSyntaxErrorException
051:             * 
052:             * Note the following divergence from JDBC3 behavior: When running
053:             * a JDBC3 client, we return EmbedSQLException. That exception class
054:             * overrides Throwable.toString() and strips off the Throwable's class name.
055:             * In contrast, the following JDBC4 implementation returns
056:             * subclasses of java.sql.Exception. These subclasses inherit the behavior 
057:             * of Throwable.toString(). That is, their toString() output includes
058:             * their class name. This will break code which relies on the
059:             * stripping behavior of EmbedSQLSxception.toString(). 
060:             */
061:
062:            public SQLException getSQLException(String message,
063:                    String messageId, SQLException next, int severity,
064:                    Throwable t, Object[] args) {
065:                String sqlState = StandardException
066:                        .getSQLStateFromIdentifier(messageId);
067:
068:                //
069:                // Create dummy exception which ferries arguments needed to serialize
070:                // SQLExceptions across the DRDA network layer.
071:                //
072:                t = wrapArgsForTransportAcrossDRDA(message, messageId, next,
073:                        severity, t, args);
074:
075:                final SQLException ex;
076:                if (sqlState.startsWith(SQLState.CONNECTIVITY_PREFIX)) {
077:                    //none of the sqlstate supported by derby belongs to
078:                    //NonTransientConnectionException
079:                    ex = new SQLTransientConnectionException(message, sqlState,
080:                            severity, t);
081:                } else if (sqlState.startsWith(SQLState.SQL_DATA_PREFIX)) {
082:                    ex = new SQLDataException(message, sqlState, severity, t);
083:                } else if (sqlState
084:                        .startsWith(SQLState.INTEGRITY_VIOLATION_PREFIX)) {
085:                    ex = new SQLIntegrityConstraintViolationException(message,
086:                            sqlState, severity, t);
087:                } else if (sqlState.startsWith(SQLState.AUTHORIZATION_PREFIX)) {
088:                    ex = new SQLInvalidAuthorizationSpecException(message,
089:                            sqlState, severity, t);
090:                } else if (sqlState.startsWith(SQLState.TRANSACTION_PREFIX)) {
091:                    ex = new SQLTransactionRollbackException(message, sqlState,
092:                            severity, t);
093:                } else if (sqlState.startsWith(SQLState.LSE_COMPILATION_PREFIX)) {
094:                    ex = new SQLSyntaxErrorException(message, sqlState,
095:                            severity, t);
096:                } else if (sqlState.startsWith(SQLState.UNSUPPORTED_PREFIX)) {
097:                    ex = new SQLFeatureNotSupportedException(message, sqlState,
098:                            severity, t);
099:                } else {
100:                    ex = new SQLException(message, sqlState, severity, t);
101:                }
102:
103:                if (next != null) {
104:                    ex.setNextException(next);
105:                }
106:                return ex;
107:            }
108:
109:            /**
110:             * Unpack the exception, looking for an EmbedSQLException which carries
111:             * the Derby messageID and args which we will serialize across DRDA so
112:             * that the client can reconstitute a SQLException with appropriate text.
113:             * If we are running JDBC4, then the
114:             * passed-in exception will hopefully wrap an informative EmbedSQLException.
115:             * See wrapArgsForTransportAcrossDRDA() below.
116:             */
117:            public SQLException getArgumentFerry(SQLException se) {
118:                Throwable cause = se.getCause();
119:
120:                if ((cause == null) || !(cause instanceof  EmbedSQLException)) {
121:                    return se;
122:                } else {
123:                    return (SQLException) cause;
124:                }
125:            }
126:
127:            /**
128:             * <p>
129:             * The following method helps handle DERBY-1178. The problem is that we may
130:             * need to serialize our final SQLException across the DRDA network layer.
131:             * That serialization involves some clever encoding of the Derby messageID and
132:             * arguments. Unfortunately, once we create one of the
133:             * JDBC4-specific subclasses of SQLException, we lose the messageID and
134:             * args. This method creates a dummy EmbedSQLException which preserves that
135:             * information. We return the dummy exception.
136:             * </p>
137:             */
138:            private SQLException wrapArgsForTransportAcrossDRDA(String message,
139:                    String messageId, SQLException next, int severity,
140:                    Throwable t, Object[] args) {
141:                return super.getSQLException(message, messageId, next,
142:                        severity, t, args);
143:            }
144:
145:        }
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