2
<!--Copyright 1997-2002 by Sleepycat Software, Inc.-->
3
<!--All rights reserved.-->
4
<!--See the file LICENSE for redistribution information.-->
7
<title>Berkeley DB: Db::get_type</title>
8
<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
9
<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++">
12
<a name="2"><!--meow--></a>
13
<table width="100%"><tr valign=top>
18
<a href="../api_cxx/c_index.html"><img src="../images/api.gif" alt="API"></a><a href="../reftoc.html"><img src="../images/ref.gif" alt="Ref"></a>
23
#include <db_cxx.h>
26
Db::get_type(DBTYPE *type);
29
<p>The Db::get_type method
30
stores the type of the underlying access method (and file format) into
31
the memory referenced by <b>type</b>.
32
The returned value is one of DB_BTREE, DB_HASH,
33
DB_RECNO, or DB_QUEUE. This value may be used to
34
determine the type of the database after a return from <a href="../api_cxx/db_open.html">Db::open</a>
35
with the <b>type</b> argument set to DB_UNKNOWN.
36
<p>The Db::get_type interface may not be called before the <a href="../api_cxx/db_open.html">Db::open</a>
37
interface has been called.
39
<p>The Db::get_type method may fail and throw an exception or return a non-zero error for the following conditions:
41
<p><dt>EINVAL<dd>An invalid flag value or parameter was specified.
42
<p>Called before <a href="../api_cxx/db_open.html">Db::open</a> was called.
44
<p>The Db::get_type method may fail and throw an exception or return a non-zero error for errors specified for other Berkeley DB and C library or system methods.
45
If a catastrophic error has occurred, the Db::get_type method may fail and
46
either return <a href="../ref/program/errorret.html#DB_RUNRECOVERY">DB_RUNRECOVERY</a> or throw a
47
<a href="../api_cxx/runrec_class.html">DbRunRecoveryException</a>,
48
in which case all subsequent Berkeley DB calls will fail in the same way.
50
<a href="../api_cxx/db_class.html">Db</a>
52
<a href="../api_cxx/db_list.html">Databases and Related Methods</a>
54
<table width="100%"><tr><td><br></td><td align=right>
55
<a href="../api_cxx/c_index.html"><img src="../images/api.gif" alt="API"></a><a href="../reftoc.html"><img src="../images/ref.gif" alt="Ref"></a>
57
<p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font>