1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
<!--$Id: env_set_tx_recover.so,v 10.26 2000/07/09 19:13:19 bostic Exp $-->
<!--Copyright 1997, 1998, 1999, 2000 by Sleepycat Software, Inc.-->
<!--All rights reserved.-->
<html>
<head>
<title>Berkeley DB: DbEnv.set_tx_recover</title>
<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++">
</head>
<body bgcolor=white>
<a name="2"><!--meow--></a>
<table><tr valign=top>
<td>
<h1>DbEnv.set_tx_recover</h1>
</td>
<td width="1%">
<a href="../api_java/java_index.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a>
</td></tr></table>
<hr size=1 noshade>
<tt>
<h3><pre>
import com.sleepycat.db.*;
<p>
public interface DbTxnRecover
{
public abstract int
tx_recover(DbEnv dbenv, Dbt log_rec, DbLsn lsn, int op);
}
public class DbEnv
{
public void set_tx_recover(DbTxnRecover tx_recover)
throws DbException;
...
}
</pre></h3>
<h1>Description</h1>
<p>Set the application's method to be called during transaction abort
and recovery. This method must return 0 on success and either
<b>errno</b> or a value outside of the Berkeley DB error name space on
failure. It takes four arguments:
<p><dl compact>
<p><dt>dbenv <dd>A Berkeley DB environment.
<p><dt>log_rec<dd>A log record.
<p><dt>lsn<dd>A log sequence number.
<p><dt>op<dd>One of the following values:
<p><dl compact>
<p><dt><a name="Db.DB_TXN_BACKWARD_ROLL">Db.DB_TXN_BACKWARD_ROLL</a><dd>The log is being read backward to determine which transactions have been
committed and to abort those operations that were not, undo the operation
described by the log record.
<p><dt><a name="Db.DB_TXN_FORWARD_ROLL">Db.DB_TXN_FORWARD_ROLL</a><dd>The log is being played forward, redo the operation described by the log
record.
<p><dt><a name="Db.DB_TXN_ABORT">Db.DB_TXN_ABORT</a><dd>The log is being read backwards during a transaction abort, undo the
operation described by the log record.
</dl>
</dl>
<p>The DbEnv.set_tx_recover interface may only be used to configure Berkeley DB before
the <a href="../api_java/env_open.html">DbEnv.open</a> interface is called.
<p>The DbEnv.set_tx_recover method throws an exception that encapsulates a non-zero error value on
failure.
<h1>Errors</h1>
<p><dl compact>
<p><dt>EINVAL<dd>An invalid flag value or parameter was specified.
<p>Called after <a href="../api_java/env_open.html">DbEnv.open</a> was called.
</dl>
<h3>Classes</h3>
<a href="../api_java/dbenv_class.html">DbEnv</a>, <a href="../api_java/txn_class.html">DbTxn</a>
<h1>See Also</h1>
<a href="../api_java/env_set_tx_max.html">DbEnv.set_tx_max</a>,
<a href="../api_java/env_set_tx_timestamp.html">DbEnv.set_tx_timestamp</a>,
<a href="../api_java/txn_abort.html">DbTxn.abort</a>,
<a href="../api_java/txn_begin.html">DbEnv.txn_begin</a>,
<a href="../api_java/txn_checkpoint.html">DbEnv.txn_checkpoint</a>,
<a href="../api_java/txn_commit.html">DbTxn.commit</a>,
<a href="../api_java/txn_id.html">DbTxn.id</a>,
<a href="../api_java/txn_prepare.html">DbTxn.prepare</a>
and
<a href="../api_java/txn_stat.html">DbEnv.txn_stat</a>.
</tt>
<table><tr><td><br></td><td width="1%">
<a href="../api_java/java_index.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a>
</td></tr></table>
<p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font>
</body>
</html>
|
