1<!--$Id: db_get_type.so,v 10.28 2007/09/21 20:06:01 bostic Exp $--> 2<!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> 3<!--See the file LICENSE for redistribution information.--> 4<html> 5<head> 6<title>Berkeley DB: DB->get_type</title> 7<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> 8<meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> 9</head> 10<body bgcolor=white> 11<table width="100%"><tr valign=top> 12<td> 13<b>DB->get_type</b> 14</td> 15<td align=right> 16<a href="/api_c/api_core.html"><img src="/images/api.gif" alt="API"></a> 17<a href="/ref/toc.html"><img src="/images/ref.gif" alt="Ref"></a></td> 18</tr></table> 19<hr size=1 noshade> 20<tt> 21<b><pre> 22#include <db.h> 23<p> 24int 25DB->get_type(DB *db, DBTYPE *type); 26</pre></b> 27<hr size=1 noshade> 28<b>Description: DB->get_type</b> 29<p>The DB->get_type method returns the type of the underlying access 30method (and file format). The type value is one of DB_BTREE, DB_HASH, 31DB_RECNO, or DB_QUEUE. This value may be used to determine the type of 32the database after a return from <a href="/api_c/db_open.html">DB->open</a> with the <b>type</b> 33parameter set to DB_UNKNOWN.</p> 34<p>The DB->get_type method may not be called before the <a href="/api_c/db_open.html">DB->open</a> method is called.</p> 35<p>The DB->get_type method 36returns a non-zero error value on failure 37and 0 on success. 38</p> 39<b>Parameters</b> <br> 40 <b>type</b><ul compact><li>The <b>type</b> parameter references memory into which 41 the type of the underlying access method is copied.</ul> 42<br> 43<br><b>Errors</b> 44<p>The DB->get_type method 45may fail and return one of the following non-zero errors:</p> 46<br> 47<b>EINVAL</b><ul compact><li>If the method was called before <a href="/api_c/db_open.html">DB->open</a> was called; or if an 48invalid flag value or parameter was specified.</ul> 49<br> 50<hr size=1 noshade> 51<br><b>Class</b> 52<a href="/api_c/db_class.html">DB</a> 53<br><b>See Also</b> 54<a href="/api_c/db_list.html">Databases and Related Methods</a> 55</tt> 56<table width="100%"><tr><td><br></td><td align=right> 57<a href="/api_c/api_core.html"><img src="/images/api.gif" alt="API"></a><a href="/ref/toc.html"><img src="/images/ref.gif" alt="Ref"></a> 58</td></tr></table> 59<p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> 60</body> 61</html> 62
