<!--$Id: dbc_count.so,v 10.27 2007/10/24 16:06:07 bostic Exp $--> <!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB: DBcursor->count</title> <meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> <meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> </head> <body bgcolor=white> <table width="100%"><tr valign=top> <td> <b>DBcursor->count</b> </td> <td align=right> <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></td> </tr></table> <hr size=1 noshade> <tt> <b><pre> #include <db.h> <p> int DBcursor->count(DBC *DBcursor, db_recno_t *countp, u_int32_t flags); </pre></b> <hr size=1 noshade> <b>Description: DBcursor->count</b> <p>The DBcursor->count method returns a count of the number of data items for the key to which the cursor refers.</p> <p>The DBcursor->count method returns a non-zero error value on failure and 0 on success. </p> <b>Parameters</b> <br> <b>countp</b><ul compact><li>The <b>countp</b> parameter references memory into which the count of the number of duplicate data items is copied.</ul> <b>flags</b><ul compact><li>The <b>flags</b> parameter is currently unused, and must be set to 0.</ul> <br> <br><b>Errors</b> <p>The DBcursor->count method may fail and return one of the following non-zero errors:</p> <br> <b>DB_REP_HANDLE_DEAD</b><ul compact><li>The database handle has been invalidated because a replication election unrolled a committed transaction.</ul> <br> <br> <b>DB_REP_LOCKOUT</b><ul compact><li>The operation was blocked by client/master synchronization.</ul> <br> <br> <b>EINVAL</b><ul compact><li>If the cursor has not been initialized; or if an invalid flag value or parameter was specified.</ul> <br> <hr size=1 noshade> <br><b>Class</b> <a href="../api_c/dbc_class.html">DBC</a> <br><b>See Also</b> <a href="../api_c/dbc_list.html">Database Cursors and Related Methods</a> </tt> <table width="100%"><tr><td><br></td><td align=right> <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> </td></tr></table> <p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> </body> </html>