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.\" ========================================================================
.\"
.IX Title "Recordset::DBSeq 3pm"
.TH Recordset::DBSeq 3pm "2010-03-05" "perl v5.10.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
DBIx::Recordset::DBSeq \- Sequence generator in DBI database
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& use DBIx::Recordset::DBSeq ;
\&
\& $self = DBIx::Recordset::DBSeq ($dbh, \*(Aqsequences\*(Aq, $min, $max) ;
\& 
\& $val1 = $self \-> NextVal (\*(Aqfoo\*(Aq) ;
\& $val2 = $self \-> NextVal (\*(Aqfoo\*(Aq) ;
\& $val3 = $self \-> NextVal (\*(Aqbar\*(Aq) ;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
DBIx::Recordset::FileSeq generates unique numbers. State is kept in the
one table of a database accessible via \s-1DBI\s0. With the new constructor you
give an open database handle and specify the the table where state should be kept.
Optionaly you can give a min and
a max values, which will be used for new sequences.
.PP
With \fBNextVal\fR you can get the next value
for the sequence of the given name.
.PP
The table must created in the following form:
.PP
create table
    (
    name    varchar (32),
    cnt     integer,
    maxcnt  integer,
    primary key name
    ) ;
.PP
If the sequence value reaches the maxcnt value, NextVal will die with an
error message. If maxcnt contains \f(CW\*(C`null\*(C'\fR there is no limit.
.SH "AUTHOR"
.IX Header "AUTHOR"
G.Richter (richter@dev.ecos.de)
.SH "SEE ALSO"
.IX Header "SEE ALSO"
.IP "DBIx::Recordset" 4
.IX Item "DBIx::Recordset"