Sindbad~EG File Manager
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<span>Db::set_ext_file_dir()</span>
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<pre class="programlisting">#include <db_cxx.h>
int
Db::set_ext_file_dir(const char *dir); </pre>
<p>
The <code class="methodname">Db::set_ext_file_dir()</code> method sets the
directory where external file data is stored. Use this method if the
database is not opened within an encompassing environment. If an
environment is in use, use <a class="xref" href="envset_blob_dir.html" title="DbEnv::set_ext_file_dir()">
<span>DbEnv::set_ext_file_dir()</span>
</a> instead.
</p>
<p>
By default, if this method is not called then external file data is
placed in a directory local to the current working directory.
</p>
<p>
Use <a class="xref" href="get_blob_dir.html" title="Db::get_ext_file_dir()">
<span>Db::get_ext_file_dir()</span>
</a> to identify the current storage location used
for external file data.
</p>
<p>
This method configures operations performed using the specified
<a class="link" href="db.html" title="Chapter 2. The Db Handle">Db</a> handle, not all operations
performed on the underlying database.
</p>
<p>
This method may not be called after <a class="xref" href="dbopen.html" title="Db::open()">
<span>Db::open()</span>
</a> is called.
</p>
<p>
Unless otherwise specified, the
<code class="methodname">Db::set_ext_file_dir()</code> <span>
<span>
method either returns a non-zero error value or throws an
exception that encapsulates a non-zero error value on
failure, and returns 0 on success.
</span>
</span>
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<div class="sect2" lang="en" xml:lang="en">
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<h3 class="title"><a id="idm139755608807632"></a>Parameters</h3>
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<h4 class="title"><a id="idm139755608844576"></a>dir</h4>
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<p>
Provides the name of the directory where external file data is
to be stored. If an absolute path is not provided, then the
directory identified here is relative to the current
working directory.
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<h3 class="title"><a id="idm139755608792432"></a>Errors</h3>
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<p>
The <code class="methodname">Db::set_ext_file_dir()</code> <span>
<span>
method may fail and throw a <a class="link" href="dbexception.html" title="Chapter 6. The DbException Class">DbException</a>
exception, encapsulating one of the following non-zero errors, or return one
of the following non-zero errors:
</span>
</span>
</p>
<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
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<h4 class="title"><a id="idm139755608777152"></a>EINVAL</h4>
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<p>
If the database was opened within a named environment; or
if the method was called after <a class="xref" href="dbopen.html" title="Db::open()">
<span>Db::open()</span>
</a> was called; or if
an invalid parameter was specified.
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<h3 class="title"><a id="idm139755608805616"></a>Class</h3>
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<a class="link" href="db.html" title="Chapter 2. The Db Handle">Db</a>
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<h3 class="title"><a id="idm139755608844192"></a>See Also</h3>
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<a class="xref" href="blob.html#bloblist" title="External Files and Related Methods">External Files and Related Methods</a>
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