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open_db
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<pre class="programlisting">
Db* open_db(DbEnv *penv, const char *filename, DBTYPE dbtype,
u_int32_t oflags, u_int32_t set_flags, int mode=0644, DbTxn *txn=NULL,
u_int32_t cflags=0,
const char *dbname=NULL)
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<p>Helper function to open a database and register it into dbstl for the calling thread. </p>
<p>Users still need to register it in any other thread using it if it is shared by multiple threads, via <a class="link" href="stldbstl_global_functionsregister_db.html" title="register_db">register_db()</a>
function. Users don't need to delete or free the memory of the returned object, dbstl will take care of that. When you don't use <a class="link" href="stldbstl_global_functionsopen_db.html" title="open_db">dbstl::open_db()</a>
but explicitly call DB C++ API to open a database, you must new the Db object, rather than create it on stack, and you must delete the Db object by yourself. </p>
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Parameters</h4>
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penv </h5>
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<p>The environment to open the database from. </p>
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txn </h5>
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<p>The transaction to open the database from, passed to Db::open. </p>
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dbtype </h5>
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<p>The database type, passed to Db::open. </p>
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oflags </h5>
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<p>The database open flags, passed to Db::open. </p>
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filename </h5>
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<p>The database file name, passed to Db::open. </p>
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<h5 class="title"><a id="id1543285"></a>
mode </h5>
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<p>The database open mode, passed to Db::open. </p>
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cflags </h5>
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<p>The create flags passed to Db class constructor. </p>
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dbname </h5>
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<p>The database name, passed to Db::open. </p>
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set_flags </h5>
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<p>The flags to be set to the created database handle. </p>
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Return Value</h4>
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<p>The opened database handle. </p>
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See Also</h4>
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<p>
</p>
<p><a class="link" href="stldbstl_global_functionsregister_db.html" title="register_db">register_db(Db *)</a>
; </p>
<p>open_db_env; </p>
<p> </p>
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Class</h3>
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