db

EDG::WP4::CCM::DB

$success = EDG::WP4::CCM::DB->read($HASHREF, $PREFIX);

This is a wrapper around all access to the profile database format, which copes with multiple possible data formats.

write ($HASHREF, $PREFIX, $FORMAT)

Given a reference to a hash, write out the hash in a database format. The specific format to use should be passed in as a string value of DB_File, GDBM_File or CDB_File. Once successfully written, the HASHREF will be untied and does not remain connected to the persistent storage.

The return value will be undef if no errors were found, else a string error message will be returned.
read ($HASHREF, $PREFIX)

Open the database file named by the prefix (the prefix is the full filename, without any extension). The format of the database file will be determined by reading the file ${PREFIX}.fmt. If that file does not exist, then DB_File will be used as a default.

The routine will return an error message if there is a failure, else undef. If there is no errror, then the HASHREF will be tied to the specified database.