Java XAResource.start方法代码示例

import javax.transaction.xa.XAResource; //导入方法依赖的package包/类
public void testSuspendableTx() throws Exception {
    if (!versionMeetsMinimum(5, 0)) {
        return;
    }

    Connection conn1 = null;

    MysqlXADataSource suspXaDs = new MysqlXADataSource();
    suspXaDs.setUrl(BaseTestCase.dbUrl);
    suspXaDs.setPinGlobalTxToPhysicalConnection(true);
    suspXaDs.setRollbackOnPooledClose(true);

    XAConnection xaConn1 = null;

    Xid xid = createXid();

    try {
        /*
         * -- works using RESUME
         * xa start 0x123,0x456;
         * select * from foo;
         * xa end 0x123,0x456;
         * xa start 0x123,0x456 resume;
         * select * from foo;
         * xa end 0x123,0x456;
         * xa commit 0x123,0x456 one phase;
         */

        xaConn1 = suspXaDs.getXAConnection();
        XAResource xaRes1 = xaConn1.getXAResource();
        conn1 = xaConn1.getConnection();
        xaRes1.start(xid, XAResource.TMNOFLAGS);
        conn1.createStatement().execute("SELECT 1");
        xaRes1.end(xid, XAResource.TMSUCCESS);
        xaRes1.start(xid, XAResource.TMRESUME);
        conn1.createStatement().execute("SELECT 1");
        xaRes1.end(xid, XAResource.TMSUCCESS);
        xaRes1.commit(xid, true);

        xaConn1.close();

        /*
         * 
         * -- fails using JOIN
         * xa start 0x123,0x456;
         * select * from foo;
         * xa end 0x123,0x456;
         * xa start 0x123,0x456 join;
         * select * from foo;
         * xa end 0x123,0x456;
         * xa commit 0x123,0x456 one phase;
         */

        xaConn1 = suspXaDs.getXAConnection();
        xaRes1 = xaConn1.getXAResource();
        conn1 = xaConn1.getConnection();
        xaRes1.start(xid, XAResource.TMNOFLAGS);
        conn1.createStatement().execute("SELECT 1");
        xaRes1.end(xid, XAResource.TMSUCCESS);
        xaRes1.start(xid, XAResource.TMJOIN);
        conn1.createStatement().execute("SELECT 1");
        xaRes1.end(xid, XAResource.TMSUCCESS);
        xaRes1.commit(xid, true);
    } finally {
        if (xaConn1 != null) {
            xaConn1.close();
        }
    }
}
 

import javax.transaction.xa.XAResource; //导入方法依赖的package包/类
/**
 * Tests fix for BUG#72890 - Java jdbc driver returns incorrect return code when it's part of XA transaction
 * 
 * @throws Exception
 *             if the test fails.
 */
public void testBug72890() throws Exception {
    MysqlXADataSource myDs = new MysqlXADataSource();
    myDs.setUrl(BaseTestCase.dbUrl);

    try {
        final Xid xid = new MysqlXid("72890".getBytes(), "72890".getBytes(), 1);

        final XAConnection xaConn = myDs.getXAConnection();
        final XAResource xaRes = xaConn.getXAResource();
        final Connection dbConn = xaConn.getConnection();
        final long connId = ((MySQLConnection) ((com.mysql.jdbc.Connection) dbConn).getConnectionMutex()).getId();

        xaRes.start(xid, XAResource.TMNOFLAGS);
        xaRes.end(xid, XAResource.TMSUCCESS);
        assertEquals(XAResource.XA_OK, xaRes.prepare(xid));

        // Simulate a connection hang and make sure the connection really dies.
        this.stmt.execute("KILL CONNECTION " + connId);
        int connAliveChecks = 4;
        while (connAliveChecks > 0) {
            this.rs = this.stmt.executeQuery("SHOW PROCESSLIST");
            boolean connIsAlive = false;
            while (!connIsAlive && this.rs.next()) {
                connIsAlive = this.rs.getInt(1) == connId;
            }
            this.rs.close();
            if (connIsAlive) {
                connAliveChecks--;
                System.out.println("Connection id " + connId + " is still alive. Checking " + connAliveChecks + " more times.");
                try {
                    Thread.sleep(500);
                } catch (InterruptedException e) {
                }
            } else {
                connAliveChecks = -1;
            }
        }
        if (connAliveChecks == 0) {
            fail("Failed to kill the Connection id " + connId + " in a timely manner.");
        }

        XAException xaEx = assertThrows(XAException.class, "Undetermined error occurred in the underlying Connection - check your data for consistency",
                new Callable<Void>() {
                    public Void call() throws Exception {
                        xaRes.commit(xid, false);
                        return null;
                    }
                });
        assertEquals("XAException error code", XAException.XAER_RMFAIL, xaEx.errorCode);

        dbConn.close();
        xaConn.close();

    } finally {
        /*
         * After MySQL 5.7.7 a prepared XA transaction is no longer rolled back at disconnect. It needs to be rolled back manually to prevent test failures
         * in subsequent runs.
         * Other MySQL versions won't have any transactions to recover.
         */
        final XAConnection xaConnRecovery = myDs.getXAConnection();
        final XAResource xaResRecovery = xaConnRecovery.getXAResource();

        final Xid[] xidsToRecover = xaResRecovery.recover(XAResource.TMSTARTRSCAN);
        for (Xid xidToRecover : xidsToRecover) {
            xaResRecovery.rollback(xidToRecover);
        }

        xaConnRecovery.close();
    }
}