75 lines
2.9 KiB
HTML
75 lines
2.9 KiB
HTML
<!--$Id: dbc_dup.html 63573 2008-05-23 21:43:21Z trent.nelson $-->
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<!--Copyright (c) 1997,2008 Oracle. All rights reserved.-->
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<!--See the file LICENSE for redistribution information.-->
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<html>
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<head>
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<title>Berkeley DB: DBcursor->dup</title>
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<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
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<meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++">
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</head>
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<body bgcolor=white>
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<table width="100%"><tr valign=top>
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<td>
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<b>DBcursor->dup</b>
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</td>
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<td align=right>
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<a href="../api_c/api_core.html"><img src="../images/api.gif" alt="API"></a>
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<a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a></td>
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</tr></table>
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<hr size=1 noshade>
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<tt>
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<b><pre>
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#include <db.h>
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<p>
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int
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DBcursor->dup(DBC *DBcursor, DBC **cursorp, u_int32_t flags);
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</pre></b>
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<hr size=1 noshade>
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<b>Description: DBcursor->dup</b>
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<p>The DBcursor->dup method creates a new cursor that uses the same transaction
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and locker ID as the original cursor. This is useful when an application
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is using locking and requires two or more cursors in the same thread of
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control.</p>
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<p>The DBcursor->dup method
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returns a non-zero error value on failure
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and 0 on success.
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</p>
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<b>Parameters</b> <br>
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<b>flags</b><ul compact><li>The <b>flags</b> parameter must be set to 0 or by bitwise inclusively <b>OR</b>'ing together one
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or more of the following values:
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<br>
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<b><a name="DB_POSITION">DB_POSITION</a></b><ul compact><li>The newly created cursor is initialized to refer to the same position
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in the database as the original cursor (if any) and hold the same locks
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(if any). If the DB_POSITION flag is not specified, or the
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original cursor does not hold a database position and locks, the created
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cursor is uninitialized and will behave like a cursor newly created
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using <a href="../api_c/db_cursor.html">DB->cursor</a>.</ul>
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<br></ul>
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<br>
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<br><b>Errors</b>
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<p>The DBcursor->dup method
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may fail and return one of the following non-zero errors:</p>
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<br>
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<b>DB_REP_HANDLE_DEAD</b><ul compact><li>The database handle has been invalidated because a replication election
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unrolled a committed transaction.</ul>
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<br>
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<br>
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<b>DB_REP_LOCKOUT</b><ul compact><li>The operation was blocked by client/master synchronization.</ul>
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<br>
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<br>
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<b>EINVAL</b><ul compact><li>An
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invalid flag value or parameter was specified.</ul>
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<br>
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<hr size=1 noshade>
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<br><b>Class</b>
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<a href="../api_c/dbc_class.html">DBC</a>
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<br><b>See Also</b>
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<a href="../api_c/dbc_list.html">Database Cursors and Related Methods</a>
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</tt>
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<table width="100%"><tr><td><br></td><td align=right>
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<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>
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</td></tr></table>
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<p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font>
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</body>
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</html>
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