@ISA = qw(Exporter);
@EXPORT = qw(&db_setocean &db_writer &db_connect $dbh
&db_filename &db_doall &db_onconflict
- &dbr_filename &dbr_connect &db_connect_core);
+ &dbr_filename &dbr_connect &db_connect_core
+ &dumptab_head &dumptab_row_hashref
+ &db_chkcommit &db_check_referential_integrity);
%EXPORT_TAGS = ( );
@EXPORT_OK = qw();
}
sub dbr_connect ($$) {
my ($datadir,$ocean) = @_;
- return connect_core(dbr_filename($datadir,$ocean));
+ return db_connect_core(dbr_filename($datadir,$ocean));
}
sub db_connect_core ($) {
}
sub db_connect () {
- $dbh= connect_core($dbfn);
+ $dbh= db_connect_core($dbfn);
}
sub db_doall ($) {
}
}
+#---------- table dump helper ----------
+
+sub dumptab_head ($$$) {
+ my ($fh,$w,$cols) = @_;
+ printf $fh "|%-${w}s", $_ foreach @$cols; print $fh "|\n";
+ print $fh "+",('-'x$w) foreach @$cols; print $fh "+\n";
+}
+
+sub dumptab_row_hashref ($$$$) {
+ my ($fh,$w,$cols,$row) = @_;
+ printf $fh "|%-$w.${w}s",
+ (defined $row->{$_} ? $row->{$_} : 'NULL')
+ foreach @$cols;
+ print $fh "\n";
+}
+
+#---------- referential integrity constraints ----------
+
+# SQLite doesn't support foreign key constraints so we do it by steam:
+
+sub nooutput ($) {
+ my ($stmts) = @_;
+ my $ekindcount= 0;
+ my $letxt= '';
+ foreach my $stmt (split /\;/, $stmts) {
+ next unless $stmt =~ /\S/;
+
+ my $etxt= '';
+ $stmt =~ s/^([ \t]*\#.*)$/ $etxt .= $1."\n"; ''; /mge;
+ $etxt= $letxt unless length $etxt;
+ $letxt= $etxt;
+
+ $stmt =~ s/^\s+//; $stmt =~ s/\s+$//;
+ my $sth= $dbh->prepare($stmt);
+ $sth->execute();
+ my $row;
+ my $ecount= 0;
+ my @cols= @{ $sth->{NAME_lc} };
+ my $w= 11;
+ while ($row= $sth->fetchrow_hashref) {
+ if (!$ecount++) {
+ print STDERR "REFERENTIAL INTEGRITY ERROR\n";
+ print STDERR "\n$etxt\n $stmt\n\n";
+ dumptab_head(\*STDERR,$w,\@cols);
+ }
+ if ($ecount>5) { print STDERR "...\n"; last; }
+ dumptab_row_hashref(\*STDERR,$w,\@cols,$row);
+ }
+ next unless $ecount;
+
+ $ekindcount++;
+ print STDERR "\n\n";
+ }
+ die "REFERENTIAL INTEGRITY ERRORS $ekindcount\n"
+ if $ekindcount;
+}
+
+sub db_check_referential_integrity ($) {
+ my ($full) = @_;
+ # non-full is done only for market data updates; it avoids
+ # detecting errors which are essentially missing metadata and
+ # old schemas, etc.
+
+ foreach my $bs (qw(buy sell)) {
+ nooutput(<<END);
+
+ # Every buy/sell must refer to an entry in commods, islands, and stalls:
+ SELECT * FROM $bs NATURAL LEFT JOIN commods WHERE commodname IS NULL;
+ SELECT * FROM $bs NATURAL LEFT JOIN islands WHERE islandname IS NULL;
+ SELECT * FROM $bs LEFT JOIN STALLS USING (stallid) WHERE stallname IS NULL;
+
+ # Every buy/sell must be part of an upload:
+ SELECT * FROM $bs NATURAL LEFT JOIN uploads WHERE timestamp IS NULL;
+
+ # The islandid in stalls must be the same as the islandid in buy/sell:
+ SELECT * FROM $bs JOIN stalls USING (stallid)
+ WHERE $bs.islandid != stalls.islandid;
+
+END
+ }
+
+ nooutput(<<END);
+
+ # Every stall and upload must refer to an island:
+ SELECT * FROM stalls NATURAL LEFT JOIN islands WHERE islandname IS NULL;
+ SELECT * FROM uploads NATURAL LEFT JOIN islands WHERE islandname IS NULL;
+
+END
+ if ($full) {
+ foreach my $end (qw(aiid biid)) {
+ foreach my $tab (qw(dists routes)) {
+ nooutput(<<END);
+
+ # Every row in dists and routes must refer to two existing rows in islands:
+ SELECT * FROM $tab d LEFT JOIN islands ON d.$end=islandid
+ WHERE islandname IS NULL;
+
+END
+ }
+ }
+ nooutput(<<END);
+
+ # Every pair of islands must have an entry in dists:
+ SELECT * FROM islands ia JOIN islands ib LEFT JOIN dists
+ ON ia.islandid=aiid and ib.islandid=biid
+ WHERE dist IS NULL;
+
+ # Every commod must refers to a commodclass and vice versa:
+ SELECT * FROM commods NATURAL LEFT JOIN commodclasses
+ WHERE commodclass IS NULL;
+ SELECT * FROM commodclasses NATURAL LEFT JOIN commods
+ WHERE commodname IS NULL;
+
+ # Ordvals which are not commodclass ordvals are unique:
+ SELECT ordval,count(*),commodname,commodid,posinclass
+ FROM commods
+ WHERE posinclass > 0
+ GROUP BY ordval
+ HAVING count(*) > 1;
+
+ # For every class, posinclass is dense from 1 to maxposinclass,
+ # apart from the commods for which it is zero.
+ SELECT commodclass,commodclassid,posinclass,count(*)
+ FROM commods NATURAL JOIN commodclasses
+ WHERE posinclass > 0
+ GROUP BY commodclassid,posinclass
+ HAVING count(*) > 1;
+ SELECT commodclass,commodclassid,count(*)
+ FROM commods NATURAL JOIN commodclasses
+ WHERE posinclass > 0
+ GROUP BY commodclassid
+ HAVING count(*) != maxposinclass;
+ SELECT *
+ FROM commods NATURAL JOIN commodclasses
+ WHERE posinclass < 0 OR posinclass > maxposinclass;
+
+END
+ }
+}
+
+sub db_chkcommit ($) {
+ my ($full) = @_;
+ db_check_referential_integrity($full);
+ $dbh->commit();
+}
+
1;
~yarrgweb / ypp-sc-tools.db-live.git / blobdiff