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Db::set_re_len
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#include &lt;db_cxx.h&gt;

int
Db::set_re_len(u_int32_t re_len);

int
Db::get_re_len(u_int32_t *re_lenp);
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Description: Db::set_re_len
For the Queue access method, specify that the records are of length
re_len. For the Queue access method, the record length must be
enough smaller than the database's page size that at least one record
plus the database page's metadata information can fit on each database
page.
For the Recno access method, specify that the records are fixed-length,
not byte-delimited, and are of length re_len.
Any records added to the database that are less than re_len bytes
long are automatically padded (see <a href="../../db4-devel-4.7.25/api_cxx/db_set_re_pad.html">Db::set_re_pad</a> for more
information).
Any attempt to insert records into the database that are greater than
re_len bytes long will cause the call to fail immediately and
return an error.
The Db::set_re_len method configures a database, not only operations performed
using the specified <a href="../../db4-devel-4.7.25/api_cxx/db_class.html">Db</a> handle.
The Db::set_re_len method may not be called after the <a href="../../db4-devel-4.7.25/api_cxx/db_open.html">Db::open</a> method is called.
If the database already exists when
<a href="../../db4-devel-4.7.25/api_cxx/db_open.html">Db::open</a> is called, the information specified to Db::set_re_len will
be ignored.

The Db::set_re_len 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.

Parameters 
 re_len<ul compact><li>The re_len parameter is the length of a Queue or Recno database
record, in bytes.</ul>
 
 Errors
The Db::set_re_len method
may fail and throw
<a href="../../db4-devel-4.7.25/api_cxx/except_class.html">DbException</a>,
encapsulating one of the following non-zero errors, or return one of
the following non-zero errors:
 
EINVAL<ul compact><li>If the method was called after <a href="../../db4-devel-4.7.25/api_cxx/db_open.html">Db::open</a> was called; or if an
invalid flag value or parameter was specified.</ul>
 
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Description: Db::get_re_len
The Db::get_re_len method returns the record length.
The Db::get_re_len method may be called at any time during the life of the
application.
The Db::get_re_len 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.

Parameters 
 re_lenp<ul compact><li>The Db::get_re_len method returns the
record length in re_lenp.</ul>
 
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 Class
<a href="../../db4-devel-4.7.25/api_cxx/db_class.html">Db</a>
 See Also
<a href="../../db4-devel-4.7.25/api_cxx/db_list.html">Databases and Related Methods</a>
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