在JDBC-ODBC桥中使用保存点:UnsupportedOperationException [英] Using savepoints with the JDBC-ODBC Bridge: UnsupportedOperationException
问题描述
我已将NetBeans IDE与MS Access连接在一起,并且在进行事务处理时遇到此错误. 似乎不支持保存点...请指导我.
I have connected NetBeans IDE with MS Access and while doing a transaction I got this error. It seems that savepoints are not supported...Please guide me..
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
conn = DriverManager.getConnection("jdbc:odbc:cse");
Statement stmt1, stmt2, stmt3;
System.out.println("Statements created");
conn.setAutoCommit(false);
String query1 = " update registration set id='105' " +
"where first = 'Sumit' ";
String query2 = " update registration set id='106' " +
"where first = 'Zayed' ";
System.out.println(" Queries created");
stmt1 = conn.createStatement();
System.out.println(" Connection created");
Savepoint s1 = conn.setSavepoint("sp1");
System.out.println(" Savept created");
stmt2 = conn.createStatement();
stmt1.executeUpdate(query1);
stmt2.executeUpdate(query2);
conn.commit();
stmt3 = conn.createStatement();
stmt1.close();
stmt2.close();
conn.releaseSavepoint(s1);
conn.close();
错误是 报表创建 查询已创建 建立连接 错误:java.lang.UnsupportedOperationException
The error is Statements created Queries created Connection created Error: java.lang.UnsupportedOperationException
推荐答案
JDBC-ODBC Bridge显然根本不支持保存点.但是, UCanAccess JDBC驱动程序确实支持未命名的保存点:
The JDBC-ODBC Bridge apparently does not support Savepoints at all. However, the UCanAccess JDBC driver does support unnamed Savepoints:
String connStr = "jdbc:ucanaccess://C:/__tmp/test.mdb";
try (Connection conn = DriverManager.getConnection(connStr)) {
conn.setAutoCommit(false);
try (Statement s = conn.createStatement()) {
s.executeUpdate("UPDATE ucaTest SET Field2='NEWVALUE1' WHERE ID=1");
}
java.sql.Savepoint sp1 = conn.setSavepoint();
try (Statement s = conn.createStatement()) {
s.executeUpdate("UPDATE ucaTest SET Field2='NEWVALUE2' WHERE ID=2");
}
conn.rollback(sp1);
conn.commit();
} catch (Exception e) {
e.printStackTrace(System.out);
}
有关使用UCanAccess的更多信息,请参见
For more information on using UCanAccess see
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