diff options
Diffstat (limited to 'config-db/OpenSLX/MetaDB/DBI.pm')
-rw-r--r-- | config-db/OpenSLX/MetaDB/DBI.pm | 1540 |
1 files changed, 0 insertions, 1540 deletions
diff --git a/config-db/OpenSLX/MetaDB/DBI.pm b/config-db/OpenSLX/MetaDB/DBI.pm deleted file mode 100644 index a5a8e68e..00000000 --- a/config-db/OpenSLX/MetaDB/DBI.pm +++ /dev/null @@ -1,1540 +0,0 @@ -# Copyright (c) 2006, 2007 - OpenSLX GmbH -# -# This program is free software distributed under the GPL version 2. -# See http://openslx.org/COPYING -# -# If you have any feedback please consult http://openslx.org/feedback and -# send your suggestions, praise, or complaints to feedback@openslx.org -# -# General information about OpenSLX can be found at http://openslx.org/ -# ----------------------------------------------------------------------------- -# DBI.pm -# - provides DBI-based implementation of the OpenSLX MetaDB API. -# ----------------------------------------------------------------------------- -package OpenSLX::MetaDB::DBI; - -use strict; -use warnings; - -use base qw(OpenSLX::MetaDB::Base); - -use DBI; -use OpenSLX::Basics; -use OpenSLX::Utils; - -################################################################################ -### basics -################################################################################ -sub new -{ - confess "Don't call OpenSLX::MetaDB::DBI::new directly!"; -} - -sub disconnect -{ - my $self = shift; - - $self->{'dbh'}->disconnect; - $self->{'dbh'} = undef; - return; -} - -sub quote -{ # default implementation quotes any given values through the DBI - my $self = shift; - - return $self->{'dbh'}->quote(@_); -} - -sub startTransaction -{ # default implementation passes on the request to the DBI - my $self = shift; - - return $self->{'dbh'}->begin_work(); -} - -sub commitTransaction -{ # default implementation passes on the request to the DBI - my $self = shift; - - return $self->{'dbh'}->commit(); -} - -sub rollbackTransaction -{ # default implementation passes on the request to the DBI - my $self = shift; - - return $self->{'dbh'}->rollback(); -} - -################################################################################ -### data access -################################################################################ -sub _trim -{ - my $s = shift; - $s =~ s[^\s*(.*?)\s*$][$1]; - return $s; -} - -sub _buildFilterClause -{ - my $self = shift; - my $filter = shift || {}; - my $filterClause = shift || ''; - - my ($connector, $quotedVal); - foreach my $col (keys %$filter) { - $connector = !length($filterClause) ? 'WHERE' : 'AND'; - if (defined $filter->{$col}) { - $quotedVal = $self->{dbh}->quote($filter->{$col}); - $filterClause .= unshiftHereDoc(<<" End-of-Here"); - $connector $col = $quotedVal - End-of-Here - } else { - $filterClause .= unshiftHereDoc(<<" End-of-Here"); - $connector $col IS NULL - End-of-Here - } - } - - return $filterClause || ''; -} - -sub _buildAttrFilterClause -{ - my $self = shift; - my $attrFilter = shift || {}; - my $table = shift; - my $filterClause = shift || ''; - - my %tableMap = ( - 'client' => 'client', - 'group' => 'groups', - 'system' => 'system', - ); - - my ($connector, $quotedName, $quotedValue); - foreach my $name (keys %$attrFilter) { - $connector = !length($filterClause) ? 'WHERE' : 'AND'; - $quotedName = $self->{dbh}->quote($name); - if (defined $attrFilter->{$name}) { - $quotedValue = $self->{dbh}->quote($attrFilter->{$name}); - $filterClause .= unshiftHereDoc(<<" End-of-Here"); - $connector EXISTS ( - SELECT name FROM ${table}_attr - WHERE name = $quotedName - AND value = $quotedValue - AND ${table}_id = $tableMap{$table}.id - ) - End-of-Here - } else { - $filterClause .= unshiftHereDoc(<<" End-of-Here"); - $connector NOT EXISTS ( - SELECT name FROM ${table}_attr - WHERE name = $quotedName - AND ${table}_id = $tableMap{$table}.id - ) - End-of-Here - } - } - - return $filterClause; -} - -sub _doSelect -{ - my $self = shift; - my $sql = shift; - my $resultCol = shift; - - my $dbh = $self->{'dbh'}; - - vlog(3, _trim($sql)); - my $sth = $dbh->prepare($sql) - or croak _tr( - q[Can't prepare SQL-statement <%s> (%s)], $sql, $dbh->errstr - ); - $sth->execute() - or croak _tr( - q[Can't execute SQL-statement <%s> (%s)], $sql, $dbh->errstr - ); - my @vals; - while (my $row = $sth->fetchrow_hashref()) { - if (defined $resultCol) { - return $row->{$resultCol} unless wantarray(); - push @vals, $row->{$resultCol}; - } else { - return $row unless wantarray(); - push @vals, $row; - } - } - - # return undef if there's no result in scalar context - return if !wantarray(); - - return @vals; -} - -sub fetchVendorOSByFilter -{ - my $self = shift; - my $filter = shift; - my $resultCols = shift; - - $resultCols = '*' unless (defined $resultCols); - my $filterClause = $self->_buildFilterClause($filter); - my $sql = "SELECT $resultCols FROM vendor_os $filterClause"; - return $self->_doSelect($sql); -} - -sub fetchVendorOSByID -{ - my $self = shift; - my $ids = shift; - my $resultCols = shift; - - $resultCols = '*' unless (defined $resultCols); - my $idStr = join ',', @$ids; - return if !length($idStr); - my $sql = "SELECT $resultCols FROM vendor_os WHERE id IN ($idStr)"; - return $self->_doSelect($sql); -} - -sub fetchInstalledPlugins -{ - my $self = shift; - my $vendorOSID = shift; - my $pluginName = shift; - my $fullInfo = shift || 0; - - return if !defined $vendorOSID; - my $nameClause - = defined $pluginName - ? "AND plugin_name = '$pluginName'" - : ''; - my $sql = unshiftHereDoc(<<" End-of-Here"); - SELECT * FROM installed_plugin - WHERE vendor_os_id = '$vendorOSID' - $nameClause - End-of-Here - my @pluginInfos = $self->_doSelect($sql); - return if !@pluginInfos; - - @pluginInfos = map { - my $pluginInfo = $_; - my $sql = unshiftHereDoc(<<" End-of-Here"); - SELECT * FROM installed_plugin_attr - WHERE installed_plugin_id = '$pluginInfo->{id}' - End-of-Here - my @attrs = $self->_doSelect($sql); - $pluginInfo->{attrs} = { - map { - ( $_->{name}, $fullInfo ? $_ : $_->{value} ) - } @attrs - }; - $pluginInfo; - } - @pluginInfos; - - return wantarray() ? @pluginInfos : $pluginInfos[0]; -} - -sub fetchExportByFilter -{ - my $self = shift; - my $filter = shift; - my $resultCols = shift; - - $resultCols = '*' unless (defined $resultCols); - my $filterClause = $self->_buildFilterClause($filter); - my $sql = "SELECT $resultCols FROM export $filterClause"; - return $self->_doSelect($sql); -} - -sub fetchExportByID -{ - my $self = shift; - my $ids = shift; - my $resultCols = shift; - - $resultCols = '*' unless (defined $resultCols); - my $idStr = join ',', @$ids; - return if !length($idStr); - my $sql = "SELECT $resultCols FROM export WHERE id IN ($idStr)"; - return $self->_doSelect($sql); -} - -sub fetchExportIDsOfVendorOS -{ - my $self = shift; - my $vendorOSID = shift; - - my $sql = qq[ - SELECT id FROM export WHERE vendor_os_id = '$vendorOSID' - ]; - return $self->_doSelect($sql, 'id'); -} - -sub fetchGlobalInfo -{ - my $self = shift; - my $id = shift; - - return if !length($id); - my $sql = "SELECT value FROM global_info WHERE id = " . $self->quote($id); - return $self->_doSelect($sql, 'value'); -} - -sub fetchSystemByFilter -{ - my $self = shift; - my $filter = shift; - my $resultCols = shift; - my $attrFilter = shift; - - $resultCols = '*' unless (defined $resultCols); - my $filterClause = $self->_buildFilterClause($filter); - $filterClause = $self->_buildAttrFilterClause( - $attrFilter, 'system', $filterClause - ); - my $sql = unshiftHereDoc(<<" End-of-Here"); - SELECT $resultCols FROM system - $filterClause - End-of-Here - return $self->_doSelect($sql); -} - -sub fetchSystemByID -{ - my $self = shift; - my $ids = shift; - my $resultCols = shift; - - $resultCols = '*' unless (defined $resultCols); - my $idStr = join ',', @$ids; - return if !length($idStr); - my $sql = "SELECT $resultCols FROM system WHERE id IN ($idStr)"; - return $self->_doSelect($sql); -} - -sub fetchSystemAttrs -{ - my $self = shift; - my $systemID = $self->{dbh}->quote(shift); - - my $sql = unshiftHereDoc(<<" End-of-Here"); - SELECT name, value FROM system_attr - WHERE system_id = $systemID - End-of-Here - my @attrs = $self->_doSelect($sql); - my $Result = {}; - foreach my $attr (@attrs) { - $Result->{$attr->{name}} = $attr->{value}; - } - return $Result; -} - -sub fetchSystemIDsOfExport -{ - my $self = shift; - my $exportID = shift; - - my $sql = qq[ - SELECT id FROM system WHERE export_id = '$exportID' - ]; - return $self->_doSelect($sql, 'id'); -} - -sub fetchSystemIDsOfClient -{ - my $self = shift; - my $clientID = shift; - - my $sql = qq[ - SELECT system_id FROM client_system_ref WHERE client_id = '$clientID' - ]; - return $self->_doSelect($sql, 'system_id'); -} - -sub fetchSystemIDsOfGroup -{ - my $self = shift; - my $groupID = shift; - - my $sql = qq[ - SELECT system_id FROM group_system_ref WHERE group_id = '$groupID' - ]; - return $self->_doSelect($sql, 'system_id'); -} - -sub fetchClientByFilter -{ - my $self = shift; - my $filter = shift; - my $resultCols = shift; - my $attrFilter = shift; - - $resultCols = '*' unless (defined $resultCols); - my $filterClause = $self->_buildFilterClause($filter); - $filterClause = $self->_buildAttrFilterClause( - $attrFilter, 'client', $filterClause - ); - my $sql = unshiftHereDoc(<<" End-of-Here"); - SELECT $resultCols FROM client - $filterClause - End-of-Here - return $self->_doSelect($sql); -} - -sub fetchClientByID -{ - my $self = shift; - my $ids = shift; - my $resultCols = shift; - - $resultCols = '*' unless (defined $resultCols); - my $idStr = join ',', @$ids; - return if !length($idStr); - my $sql = "SELECT $resultCols FROM client WHERE id IN ($idStr)"; - return $self->_doSelect($sql); -} - -sub fetchClientAttrs -{ - my $self = shift; - my $clientID = $self->{dbh}->quote(shift); - - my $sql = unshiftHereDoc(<<" End-of-Here"); - SELECT name, value FROM client_attr - WHERE client_id = $clientID - End-of-Here - my @attrs = $self->_doSelect($sql); - my $Result = {}; - foreach my $attr (@attrs) { - $Result->{$attr->{name}} = $attr->{value}; - } - return $Result; -} - -sub fetchClientIDsOfSystem -{ - my $self = shift; - my $systemID = shift; - - my $sql = qq[ - SELECT client_id FROM client_system_ref WHERE system_id = '$systemID' - ]; - return $self->_doSelect($sql, 'client_id'); -} - -sub fetchClientIDsOfGroup -{ - my $self = shift; - my $groupID = shift; - - my $sql = qq[ - SELECT client_id FROM group_client_ref WHERE group_id = '$groupID' - ]; - return $self->_doSelect($sql, 'client_id'); -} - -sub fetchGroupByFilter -{ - my $self = shift; - my $filter = shift; - my $resultCols = shift; - my $attrFilter = shift; - - $resultCols = '*' unless (defined $resultCols); - my $filterClause = $self->_buildFilterClause($filter); - $filterClause = $self->_buildAttrFilterClause( - $attrFilter, 'group', $filterClause - ); - my $sql = unshiftHereDoc(<<" End-of-Here"); - SELECT $resultCols FROM groups - $filterClause - End-of-Here - return $self->_doSelect($sql); -} - -sub fetchGroupByID -{ - my $self = shift; - my $ids = shift; - my $resultCols = shift; - - $resultCols = '*' unless (defined $resultCols); - my $idStr = join ',', @$ids; - return if !length($idStr); - my $sql = "SELECT $resultCols FROM groups WHERE id IN ($idStr)"; - return $self->_doSelect($sql); -} - -sub fetchGroupAttrs -{ - my $self = shift; - my $groupID = $self->{dbh}->quote(shift); - - my $sql = unshiftHereDoc(<<" End-of-Here"); - SELECT name, value FROM group_attr - WHERE group_id = $groupID - End-of-Here - my @attrs = $self->_doSelect($sql); - my $Result = {}; - foreach my $attr (@attrs) { - $Result->{$attr->{name}} = $attr->{value}; - } - return $Result; -} - -sub fetchGroupIDsOfSystem -{ - my $self = shift; - my $systemID = shift; - - my $sql = qq[ - SELECT group_id FROM group_system_ref WHERE system_id = '$systemID' - ]; - return $self->_doSelect($sql, 'group_id'); -} - -sub fetchGroupIDsOfClient -{ - my $self = shift; - my $clientID = shift; - - my $sql = qq[ - SELECT group_id FROM group_client_ref WHERE client_id = '$clientID' - ]; - return $self->_doSelect($sql, 'group_id'); -} - -################################################################################ -### data manipulation functions -################################################################################ -sub _doInsert -{ - my $self = shift; - my $table = shift; - my $valRows = shift; - my $ignoreIDs = shift; - - my $dbh = $self->{'dbh'}; - my $valRow = (@$valRows)[0]; - return if !defined $valRow || !scalar keys %$valRow; - - if ($table =~ m[_ref$]) { - # reference tables do not have IDs: - $ignoreIDs = 1; - } - - my $needToGenerateIDs = $self->generateNextIdForTable(undef); - if (!$ignoreIDs && $needToGenerateIDs) { - # DB requires pre-specified IDs, so we add the 'id' column: - $valRow->{id} = undef unless exists $valRow->{id}; - } - my @ids; - foreach my $valRow (@$valRows) { - if (!defined $valRow->{id} && !$ignoreIDs && $needToGenerateIDs) { - # let DB-backend pre-specify ID, as current DB can't generate IDs: - $valRow->{id} = $self->generateNextIdForTable($table); - vlog(3, "generated id for <$table> is <$valRow->{id}>"); - } - my $cols = join ', ', keys %$valRow; - my $values = join ', ', - map { $self->quote($valRow->{$_}) } keys %$valRow; - my $sql = "INSERT INTO $table ( $cols ) VALUES ( $values )"; - vlog(3, $sql); - my $sth = $dbh->prepare($sql) - or croak _tr(q[Can't insert into table <%s> (%s)], $table, - $dbh->errstr); - $sth->execute() - or croak _tr(q[Can't insert into table <%s> (%s)], $table, - $dbh->errstr); - if (!$ignoreIDs) { - my $lastID = $dbh->last_insert_id(undef, undef, $table, 'id'); - if (!defined $valRow->{id}) { - # id has not been pre-specified, we need to fetch it from DB: - $valRow->{'id'} = $lastID; - vlog(3, "DB-generated id for <$table> is <$valRow->{id}>"); - } - elsif ($valRow->{'id'} ne $lastID) { - # id has been pre-specified, but DB changed it, so we update - # it with the pre-specified value - my $sql2 = unshiftHereDoc(<<" End-of-Here"); - UPDATE $table SET id='$valRow->{'id'}' WHERE id='$lastID' - End-of-Here - vlog(3, $sql2); - $dbh->do($sql2) or croak _tr( - q[Can't update table <%s> (%s)], $table, $dbh->errstr - ); - } - } - push @ids, $valRow->{'id'}; - } - return wantarray() ? @ids : shift @ids; -} - -sub _doDelete -{ - my $self = shift; - my $table = shift; - my $IDs = shift; - my $idCol = shift; - my $additionalWhereClause = shift; - - my $dbh = $self->{'dbh'}; - - $IDs = [undef] unless defined $IDs; - $idCol = 'id' unless defined $idCol; - foreach my $id (@$IDs) { - my $sql = "DELETE FROM $table"; - if (defined $id) { - $sql .= " WHERE $idCol = " . $self->quote($id); - if (defined $additionalWhereClause) { - $sql .= $additionalWhereClause; - } - } - vlog(3, $sql); - my $sth = $dbh->prepare($sql) - or croak _tr(q[Can't delete from table <%s> (%s)], $table, - $dbh->errstr); - $sth->execute() - or croak _tr(q[Can't delete from table <%s> (%s)], $table, - $dbh->errstr); - } - return 1; -} - -sub _doUpdate -{ - my $self = shift; - my $table = shift; - my $IDs = shift; - my $valRows = shift; - - my $dbh = $self->{'dbh'}; - my $valRow = (@$valRows)[0]; - return 1 if !defined $valRow || !scalar keys %$valRow; - - my $idx = 0; - foreach my $valRow (@$valRows) { - my $id = $IDs->[$idx++]; - my %valData = %$valRow; - # fail if asked to change the column 'id', as that is bogus - return if exists $valData{id} && $valData{id} ne $id; - # filter column 'id' if present, as we don't want to write it - delete $valData{id}; - my @cols = map { "$_ = " . $self->quote($valRow->{$_}) } - grep { $_ ne 'id' } - # filter column 'id' if present, as we don't want - # to update it! - keys %$valRow; - next if !@cols; - my $cols = join ', ', @cols; - my $sql = "UPDATE $table SET $cols"; - if (defined $id) { - $sql .= " WHERE id = " . $self->quote($id); - } - vlog(3, $sql); - my $sth = $dbh->prepare($sql) - or croak _tr(q[Can't update table <%s> (%s)], $table, $dbh->errstr); - $sth->execute() - or croak _tr(q[Can't update table <%s> (%s)], $table, $dbh->errstr); - } - return 1; -} - -sub _updateRefTable -{ - my $self = shift; - my $table = shift; - my $keyID = shift; - my $newValueIDs = shift; - my $keyCol = shift; - my $valueCol = shift; - my $oldValueIDs = shift; - - my %lastValueIDs; - @lastValueIDs{@$oldValueIDs} = (); - - foreach my $valueID (@$newValueIDs) { - if (!exists $lastValueIDs{$valueID}) { - # value-ID is new, create it - my $valRow = { - $keyCol => $keyID, - $valueCol => $valueID, - }; - $self->_doInsert($table, [$valRow]); - } else { - # value-ID already exists, leave as is, but remove from hash: - delete $lastValueIDs{$valueID}; - } - } - - # all the remaining value-IDs need to be removed: - if (scalar keys %lastValueIDs) { - $self->_doDelete($table, [keys %lastValueIDs], - $valueCol, " AND $keyCol='$keyID'"); - } - return 1; -} - -sub _updateOneToManyRefAttr -{ - my $self = shift; - my $table = shift; - my $oneID = shift; - my $newManyIDs = shift; - my $fkCol = shift; - my $oldManyIDs = shift; - - my %lastManyIDs; - @lastManyIDs{@$oldManyIDs} = (); - - foreach my $id (@$newManyIDs) { - if (!exists $lastManyIDs{$id}) { - # ID has changed, update it - $self->_doUpdate($table, $id, [{$fkCol => $oneID}]); - } else { - # ID hasn't changed, leave as is, but remove from hash: - delete $lastManyIDs{$id}; - } - } - - # all the remaining many-IDs need to be set to 0: - foreach my $id (scalar keys %lastManyIDs) { - $self->_doUpdate($table, $id, [{$fkCol => '0'}]); - } - return 1; -} - -sub addVendorOS -{ - my $self = shift; - my $valRows = shift; - - return $self->_doInsert('vendor_os', $valRows); -} - -sub removeVendorOS -{ - my $self = shift; - my $vendorOSIDs = shift; - - return $self->_doDelete('vendor_os', $vendorOSIDs); -} - -sub changeVendorOS -{ - my $self = shift; - my $vendorOSIDs = shift; - my $valRows = shift; - - return $self->_doUpdate('vendor_os', $vendorOSIDs, $valRows); -} - -sub addInstalledPlugin -{ - my $self = shift; - my $vendorOSID = shift; - my $pluginName = shift; - my $newAttrs = shift; - - return if !defined $vendorOSID || !$pluginName; - - my $installedPlugin - = $self->fetchInstalledPlugins($vendorOSID, $pluginName, 1); - if (!$installedPlugin) { - return if !$self->_doInsert('installed_plugin', [ { - vendor_os_id => $vendorOSID, - plugin_name => $pluginName, - } ] ); - $installedPlugin - = $self->fetchInstalledPlugins($vendorOSID, $pluginName, 1); - } - return if !$installedPlugin; - - # determine the required attribute actions ... - my $oldAttrs = $installedPlugin->{attrs} || {}; - my @attrsToBeInserted - = grep { - exists $newAttrs->{$_} && !exists $oldAttrs->{$_} - } keys %$newAttrs; - my @attrsToBeDeleted = grep { !exists $newAttrs->{$_} } keys %$oldAttrs; - my @attrsToBeUpdated - = grep { - exists $newAttrs->{$_} && exists $oldAttrs->{$_} - && ($oldAttrs->{$_}->{value} || '-') ne ($newAttrs->{$_} || '-') - } keys %$newAttrs; - - # ... insert the new ones ... - my @attrData - = map { - { - installed_plugin_id => $installedPlugin->{id}, - name => $_, - value => $newAttrs->{$_}, - } - } - @attrsToBeInserted; - $self->_doInsert('installed_plugin_attr', \@attrData); - - # ... delete the old ones ... - my @oldIDs = map { $oldAttrs->{$_}->{id} } @attrsToBeDeleted; - $self->_doDelete('installed_plugin_attr', \@oldIDs); - - # ... and update the changed ones ... - my @IDs = map { $oldAttrs->{$_}->{id} } @attrsToBeUpdated; - @attrData = map { { value => $newAttrs->{$_} } } @attrsToBeUpdated; - $self->_doUpdate('installed_plugin_attr', \@IDs, \@attrData); - - return 1; -} - -sub removeInstalledPlugin -{ - my $self = shift; - my $vendorOSID = shift; - my $pluginName = shift; - - return if !defined $vendorOSID || !$pluginName; - - my $plugin = $self->fetchInstalledPlugins($vendorOSID, $pluginName); - return if !$plugin; - return if !$self->_doDelete( - 'installed_plugin_attr', [ $plugin->{id} ], 'installed_plugin_id' - ); - return $self->_doDelete('installed_plugin', [ $plugin->{id} ] ); -} - -sub addExport -{ - my $self = shift; - my $valRows = shift; - - return $self->_doInsert('export', $valRows); -} - -sub removeExport -{ - my $self = shift; - my $exportIDs = shift; - - return $self->_doDelete('export', $exportIDs); -} - -sub changeExport -{ - my $self = shift; - my $exportIDs = shift; - my $valRows = shift; - - return $self->_doUpdate('export', $exportIDs, $valRows); -} - -sub changeGlobalInfo -{ - my $self = shift; - my $id = shift; - my $value = shift; - - return $self->_doUpdate('global_info', [$id], [{'value' => $value}]); -} - -sub addSystem -{ - my $self = shift; - my $valRows = shift; - my $attrValRows = shift; - - # ... store the systems to get the IDs ... - my @systemIDs = $self->_doInsert('system', $valRows); - - # ... finally store the individual attribute sets - foreach my $id (@systemIDs) { - my $attrs = shift @$attrValRows; - next if !defined $attrs; - return if !$self->setSystemAttrs($id, $attrs); - } - - return @systemIDs; -} - -sub removeSystem -{ - my $self = shift; - my $systemIDs = shift; - - return $self->_doDelete('system', $systemIDs); -} - -sub changeSystem -{ - my $self = shift; - my $systemIDs = shift; - my $valRows = shift; - my $attrValRows = shift; - - # store the attribute hashes individually - foreach my $id (@$systemIDs) { - my $attrs = shift @$attrValRows; - next if !defined $attrs; - return if !$self->setSystemAttrs($id, $attrs); - } - - # finally update all systems in one go - return $self->_doUpdate('system', $systemIDs, $valRows); -} - -sub setSystemAttrs -{ - my $self = shift; - my $systemID = shift; - my $newAttrs = shift; - - # fetch info about existing attrs - my $sql = "SELECT * FROM system_attr WHERE system_id = $systemID"; - my %oldAttrs = map { ($_->{name}, $_) } $self->_doSelect($sql); - - # We write undefined attributes for the default system only, such that - # it shows all existing attributes. All other systems never write undefined - # attributes (if they have not defined a specific attribute, it is - # inherited from "above"). We encapsulate that decision in the following - # delegate - my $valueIsOK = sub { - my $value = shift; - return $systemID == 0 || defined $value; - }; - - # determine the required actions ... - my @attrsToBeInserted - = grep { - $valueIsOK->($newAttrs->{$_}) && !exists $oldAttrs{$_} - } keys %$newAttrs; - my @attrsToBeDeleted - = grep { - !exists $newAttrs->{$_} || !$valueIsOK->($newAttrs->{$_}) - } keys %oldAttrs; - my @attrsToBeUpdated - = grep { - $valueIsOK->($newAttrs->{$_}) && exists $oldAttrs{$_} - && ((defined($oldAttrs{$_}->{value}) xor defined($newAttrs->{$_})) - || (defined($oldAttrs{$_}->{value}) && defined($newAttrs->{$_}) - && $oldAttrs{$_}->{value} ne $newAttrs->{$_})) - } keys %$newAttrs; - - # ... insert the new ones ... - my @attrData - = map { - { - system_id => $systemID, - name => $_, - value => $newAttrs->{$_}, - } - } - @attrsToBeInserted; - $self->_doInsert('system_attr', \@attrData); - - # ... delete the old ones ... - my @oldIDs = map { $oldAttrs{$_}->{id} } @attrsToBeDeleted; - $self->_doDelete('system_attr', \@oldIDs); - - # ... and update the changed ones ... - my @IDs = map { $oldAttrs{$_}->{id} } @attrsToBeUpdated; - @attrData = map { { value => $newAttrs->{$_} } } @attrsToBeUpdated; - $self->_doUpdate('system_attr', \@IDs, \@attrData); - - return 1; -} - -sub setClientIDsOfSystem -{ - my $self = shift; - my $systemID = shift; - my $clientIDs = shift; - - my @currClients = $self->fetchClientIDsOfSystem($systemID); - return $self->_updateRefTable( - 'client_system_ref', $systemID, $clientIDs, 'system_id', 'client_id', - \@currClients - ); -} - -sub setGroupIDsOfSystem -{ - my $self = shift; - my $systemID = shift; - my $groupIDs = shift; - - my @currGroups = $self->fetchGroupIDsOfSystem($systemID); - return $self->_updateRefTable( - 'group_system_ref', $systemID, $groupIDs, 'system_id', 'group_id', - \@currGroups - ); -} - -sub addClient -{ - my $self = shift; - my $valRows = shift; - my $attrValRows = shift; - - # ... store the clients to get the IDs ... - my @clientIDs = $self->_doInsert('client', $valRows); - - # ... finally store the individual attribute sets - foreach my $id (@clientIDs) { - my $attrs = shift @$attrValRows; - next if !defined $attrs; - return if !$self->setClientAttrs($id, $attrs); - } - - return @clientIDs; -} - -sub removeAttributeByName -{ - my $self = shift; - my $attrName = shift; - - return $self->_doDelete('system_attr', [ $attrName ], 'name') - && $self->_doDelete('client_attr', [ $attrName ], 'name') - && $self->_doDelete('group_attr', [ $attrName ], 'name'); -} - -sub removeClient -{ - my $self = shift; - my $clientIDs = shift; - - return $self->_doDelete('client', $clientIDs); -} - -sub changeClient -{ - my $self = shift; - my $clientIDs = shift; - my $valRows = shift; - my $attrValRows = shift; - - # store the attribute hashes individually - foreach my $id (@$clientIDs) { - my $attrs = shift @$attrValRows; - next if !defined $attrs; - return if !$self->setClientAttrs($id, $attrs); - } - - # finally update all systems in one go - return $self->_doUpdate('client', $clientIDs, $valRows); -} - -sub setClientAttrs -{ - my $self = shift; - my $clientID = shift; - my $newAttrs = shift; - - # fetch info about existing attrs - my $sql = "SELECT * FROM client_attr WHERE client_id = $clientID"; - my %oldAttrs = map { ($_->{name}, $_) } $self->_doSelect($sql); - - # determine the required actions ... - my @attrsToBeInserted - = grep { - defined $newAttrs->{$_} && !exists $oldAttrs{$_} - } keys %$newAttrs; - my @attrsToBeDeleted = grep { !defined $newAttrs->{$_} } keys %oldAttrs; - my @attrsToBeUpdated - = grep { - defined $newAttrs->{$_} && exists $oldAttrs{$_} - && ($oldAttrs{$_}->{value} || '') ne ($newAttrs->{$_} || '') - } keys %$newAttrs; - - # ... insert the new ones ... - my @attrData - = map { - { - client_id => $clientID, - name => $_, - value => $newAttrs->{$_}, - } - } - @attrsToBeInserted; - $self->_doInsert('client_attr', \@attrData); - - # ... delete the old ones ... - my @oldIDs = map { $oldAttrs{$_}->{id} } @attrsToBeDeleted; - $self->_doDelete('client_attr', \@oldIDs); - - # ... and update the changed ones ... - my @IDs = map { $oldAttrs{$_}->{id} } @attrsToBeUpdated; - @attrData = map { { value => $newAttrs->{$_} } } @attrsToBeUpdated; - $self->_doUpdate('client_attr', \@IDs, \@attrData); - - return 1; -} - -sub setSystemIDsOfClient -{ - my $self = shift; - my $clientID = shift; - my $systemIDs = shift; - - my @currSystems = $self->fetchSystemIDsOfClient($clientID); - return $self->_updateRefTable( - 'client_system_ref', $clientID, $systemIDs, 'client_id', 'system_id', - \@currSystems - ); -} - -sub setGroupIDsOfClient -{ - my $self = shift; - my $clientID = shift; - my $groupIDs = shift; - - my @currGroups = $self->fetchGroupIDsOfClient($clientID); - return $self->_updateRefTable( - 'group_client_ref', $clientID, $groupIDs, 'client_id', 'group_id', - \@currGroups - ); -} - -sub addGroup -{ - my $self = shift; - my $valRows = shift; - my $attrValRows = shift; - - # ... store the groups to get the IDs ... - my @groupIDs = $self->_doInsert('groups', $valRows); - - # ... finally store the individual attribute sets - foreach my $id (@groupIDs) { - my $attrs = shift @$attrValRows; - next if !defined $attrs; - return if !$self->setGroupAttrs($id, $attrs); - } - - return @groupIDs; -} - -sub removeGroup -{ - my $self = shift; - my $groupIDs = shift; - - return $self->_doDelete('groups', $groupIDs); -} - -sub changeGroup -{ - my $self = shift; - my $groupIDs = shift; - my $valRows = shift; - my $attrValRows = shift; - - # store the attribute hashes individually - foreach my $id (@$groupIDs) { - my $attrs = shift @$attrValRows; - next if !defined $attrs; - return if !$self->setGroupAttrs($id, $attrs); - } - - # finally update all groups in one go - return $self->_doUpdate('groups', $groupIDs, $valRows); -} - -sub setGroupAttrs -{ - my $self = shift; - my $groupID = shift; - my $newAttrs = shift; - - # fetch info about existing attrs - my $sql = "SELECT * FROM group_attr WHERE group_id = $groupID"; - my %oldAttrs = map { ($_->{name}, $_) } $self->_doSelect($sql); - - # determine the required actions ... - my @attrsToBeInserted - = grep { - defined $newAttrs->{$_} && !exists $oldAttrs{$_} - } keys %$newAttrs; - my @attrsToBeDeleted = grep { !defined $newAttrs->{$_} } keys %oldAttrs; - my @attrsToBeUpdated - = grep { - defined $newAttrs->{$_} && exists $oldAttrs{$_} - && ($oldAttrs{$_}->{value} || '') ne ($newAttrs->{$_} || '') - } keys %$newAttrs; - - # ... insert the new ones ... - my @attrData - = map { - { - group_id => $groupID, - name => $_, - value => $newAttrs->{$_}, - } - } - @attrsToBeInserted; - $self->_doInsert('group_attr', \@attrData); - - # ... delete the old ones ... - my @oldIDs = map { $oldAttrs{$_}->{id} } @attrsToBeDeleted; - $self->_doDelete('group_attr', \@oldIDs); - - # ... and update the changed ones ... - my @IDs = map { $oldAttrs{$_}->{id} } @attrsToBeUpdated; - @attrData = map { { value => $newAttrs->{$_} } } @attrsToBeUpdated; - $self->_doUpdate('group_attr', \@IDs, \@attrData); - - return 1; -} - -sub setClientIDsOfGroup -{ - my $self = shift; - my $groupID = shift; - my $clientIDs = shift; - - my @currClients = $self->fetchClientIDsOfGroup($groupID); - return $self->_updateRefTable( - 'group_client_ref', $groupID, $clientIDs, 'group_id', 'client_id', - \@currClients - ); -} - -sub setSystemIDsOfGroup -{ - my $self = shift; - my $groupID = shift; - my $systemIDs = shift; - - my @currSystems = $self->fetchSystemIDsOfGroup($groupID); - return $self->_updateRefTable( - 'group_system_ref', $groupID, $systemIDs, 'group_id', 'system_id', - \@currSystems - ); -} - -################################################################################ -### schema related functions -################################################################################ -sub _convertColDescrsToDBNativeString -{ - my $self = shift; - my $colDescrs = shift; - - my $colDescrString = join ', ', map { - # convert each column description into database native format - # (e.g. convert 'name:s.45' to 'name char(45)'): - if (!m[^\s*(\S+?)\s*:\s*(\S+?)\s*$]) { - croak _tr('UnknownDbSchemaColumnDescr', $_); - } - "$1 " . $self->schemaConvertTypeDescrToNative($2); - } @$colDescrs; - return $colDescrString; -} - -sub _convertColDescrsToColNames -{ - my $self = shift; - my $colDescrs = shift; - - return map { - # convert each column description into database native format - # (e.g. convert 'name:s.45' to 'name char(45)'): - if (!m[^\s*(\S+?)\s*:.+$]) { - croak _tr('UnknownDbSchemaColumnDescr', $_); - } - $1; - } @$colDescrs; -} - -sub _convertColDescrsToColNamesString -{ - my $self = shift; - my $colDescrs = shift; - - return join ', ', $self->_convertColDescrsToColNames($colDescrs); -} - -sub schemaFetchDBVersion -{ - my $self = shift; - - my $dbh = $self->{dbh}; - local $dbh->{RaiseError} = 1; - my $row = - eval { $dbh->selectrow_hashref('SELECT schema_version FROM meta'); }; - return 0 if $@; - # no database access possible - return unless defined $row; - # no entry in meta-table - return $row->{schema_version}; -} - -sub schemaSetDBVersion -{ - my $self = shift; - my $dbVersion = shift; - - $self->{dbh}->do("UPDATE meta SET schema_version = '$dbVersion'") - or croak _tr('Unable to set DB-schema version to %s!', $dbVersion); - - return 1; -} - -sub schemaFetchPluginInfoHashVal -{ - my $self = shift; - - my $row - = $self->{dbh}->selectrow_hashref('SELECT plugin_info_hash FROM meta'); - - return $row->{plugin_info_hash}; -} - -sub schemaSetPluginInfoHashVal -{ - my $self = shift; - my $pluginInfoHashVal = shift; - - $self->{dbh}->do("UPDATE meta SET plugin_info_hash = '$pluginInfoHashVal'") - or croak _tr( - 'Unable to set plugin-info-hash-value to %s!', $pluginInfoHashVal - ); - - return 1; -} - -sub schemaConvertTypeDescrToNative -{ # a default implementation, many DBs need to override... - my $self = shift; - my $typeDescr = lc(shift); - - if ($typeDescr eq 'b') { - return 'integer'; - } elsif ($typeDescr eq 'i') { - return 'integer'; - } elsif ($typeDescr eq 'pk') { - return 'integer primary key'; - } elsif ($typeDescr eq 'fk') { - return 'integer'; - } elsif ($typeDescr =~ m[^s\.(\d+)$]i) { - return "varchar($1)"; - } else { - croak _tr('UnknownDbSchemaTypeDescr', $typeDescr); - } -} - -sub schemaAddTable -{ - my $self = shift; - my $table = shift; - my $colDescrs = shift; - my $initialVals = shift; - my $isSubCmd = shift; - - my $dbh = $self->{'dbh'}; - vlog(1, "adding table <$table> to schema...") unless $isSubCmd; - my $colDescrString = $self->_convertColDescrsToDBNativeString($colDescrs); - my $sql = "CREATE TABLE $table ($colDescrString)"; - vlog(3, $sql); - $dbh->do($sql) - or croak _tr(q[Can't create table <%s> (%s)], $table, $dbh->errstr); - if (defined $initialVals) { - # don't care about IDs if there's no 'id' column in this table - my $ignoreIDs = ($colDescrString !~ m[\bid\b]); - $self->_doInsert($table, $initialVals, $ignoreIDs); - } - return; -} - -sub schemaDropTable -{ - my $self = shift; - my $table = shift; - my $isSubCmd = shift; - - my $dbh = $self->{'dbh'}; - vlog(1, "dropping table <$table> from schema...") unless $isSubCmd; - my $sql = "DROP TABLE $table"; - vlog(3, $sql); - $dbh->do($sql) - or croak _tr(q[Can't drop table <%s> (%s)], $table, $dbh->errstr); - return; -} - -sub schemaRenameTable -{ # a rather simple-minded implementation that renames a table in several - # steps: - # - create the new table - # - copy the data over from the old one - # - drop the old table - # This should be overriden for advanced DBs, as these more often than not - # implement the 'ALTER TABLE <old> RENAME TO <new>' SQL-command (which - # is much more efficient). - my $self = shift; - my $oldTable = shift; - my $newTable = shift; - my $colDescrs = shift; - my $isSubCmd = shift; - - my $dbh = $self->{'dbh'}; - vlog(1, "renaming table <$oldTable> to <$newTable>...") unless $isSubCmd; - my $colDescrString = $self->_convertColDescrsToDBNativeString($colDescrs); - my $sql = "CREATE TABLE $newTable ($colDescrString)"; - vlog(3, $sql); - $dbh->do($sql) - or croak _tr(q[Can't create table <%s> (%s)], $oldTable, $dbh->errstr); - my $colNamesString = $self->_convertColDescrsToColNamesString($colDescrs); - my @dataRows = $self->_doSelect("SELECT $colNamesString FROM $oldTable"); - $self->_doInsert($newTable, \@dataRows); - $sql = "DROP TABLE $oldTable"; - vlog(3, $sql); - $dbh->do($sql) - or croak _tr(q[Can't drop table <%s> (%s)], $oldTable, $dbh->errstr); - return; -} - -sub schemaAddColumns -{ # a rather simple-minded implementation that adds columns to a table - # in several steps: - # - create a temp table with the new layout - # - copy the data from the old table into the new one - # - drop the old table - # - rename the temp table to the original name - # This should be overriden for advanced DBs, as these more often than not - # implement the 'ALTER TABLE <table> ADD COLUMN <col>' SQL-command (which - # is much more efficient). - my $self = shift; - my $table = shift; - my $newColDescrs = shift; - my $newColDefaultVals = shift; - my $colDescrs = shift; - my $isSubCmd = shift; - - my $dbh = $self->{'dbh'}; - my $tempTable = "${table}_temp"; - my @newColNames = $self->_convertColDescrsToColNames($newColDescrs); - my $newColStr = join ', ', @newColNames; - vlog(1, "adding columns <$newColStr> to table <$table>...") - unless $isSubCmd; - $self->schemaAddTable($tempTable, $colDescrs, undef, 1); - - # copy the data from the old table to the new: - my @dataRows = $self->_doSelect("SELECT * FROM $table"); - $self->_doInsert($tempTable, \@dataRows); - # N.B.: for the insert, we rely on the caller having added the new - # columns to the end of the table (if that isn't the case, things - # break here!) - - if (defined $newColDefaultVals) { - # default values have been provided, we apply them now: - $self->_doUpdate($tempTable, undef, $newColDefaultVals); - } - - $self->schemaDropTable($table, 1); - $self->schemaRenameTable($tempTable, $table, $colDescrs, 1); - return; -} - -sub schemaDropColumns -{ # a rather simple-minded implementation that drops columns from a table - # in several steps: - # - create a temp table with the new layout - # - copy the data from the old table into the new one - # - drop the old table - # - rename the temp table to the original name - # This should be overriden for advanced DBs, as these sometimes - # implement the 'ALTER TABLE <table> DROP COLUMN <col>' SQL-command (which - # is much more efficient). - my $self = shift; - my $table = shift; - my $dropColNames = shift; - my $colDescrs = shift; - my $isSubCmd = shift; - - my $dbh = $self->{'dbh'}; - my $tempTable = "${table}_temp"; - my $dropColStr = join ', ', @$dropColNames; - vlog(1, "dropping columns <$dropColStr> from table <$table>...") - unless $isSubCmd; - $self->schemaAddTable($tempTable, $colDescrs, undef, 1); - - # copy the data from the old table to the new: - my $colNamesString = $self->_convertColDescrsToColNamesString($colDescrs); - my @dataRows = $self->_doSelect("SELECT $colNamesString FROM $table"); - $self->_doInsert($tempTable, \@dataRows); - - $self->schemaDropTable($table, 1); - $self->schemaRenameTable($tempTable, $table, $colDescrs, 1); - return; -} - -sub schemaChangeColumns -{ # a rather simple-minded implementation that changes columns - # in several steps: - # - create a temp table with the new layout - # - copy the data from the old table into the new one - # - drop the old table - # - rename the temp table to the original name - # This should be overriden for advanced DBs, as these sometimes - # implement the 'ALTER TABLE <table> CHANGE COLUMN <col>' SQL-command (which - # is much more efficient). - my $self = shift; - my $table = shift; - my $colChanges = shift; - my $colDescrs = shift; - my $isSubCmd = shift; - - my $dbh = $self->{'dbh'}; - my $tempTable = "${table}_temp"; - my $changeColStr = join ', ', keys %$colChanges; - vlog(1, "changing columns <$changeColStr> of table <$table>...") - unless $isSubCmd; - $self->schemaAddTable($tempTable, $colDescrs, undef, 1); - - # copy the data from the old table to the new: - my $colNamesString = $self->_convertColDescrsToColNamesString($colDescrs); - my @dataRows = $self->_doSelect("SELECT * FROM $table"); - foreach my $oldCol (keys %$colChanges) { - my $newCol = - $self->_convertColDescrsToColNamesString([$colChanges->{$oldCol}]); - # rename current column in all data-rows: - foreach my $row (@dataRows) { - $row->{$newCol} = $row->{$oldCol}; - delete $row->{$oldCol}; - } - } - $self->_doInsert($tempTable, \@dataRows); - - $self->schemaDropTable($table, 1); - $self->schemaRenameTable($tempTable, $table, $colDescrs, 1); - return; -} - -1; - -=head1 NAME - -DBI.pm - provides DBI-based implementation of the OpenSLX MetaDB API. - -=head1 SYNOPSIS - -This class is the base for all DBI-related metaDB variants. -It provides a default implementation for every method, such that -each DB-specific implementation needs to override only the methods -that require a different implementation than the one provided here. - -=head1 NOTES - -In case you ask yourself why none of the SQL-statements in this -file make use of SQL bind params (?), the answer is that at least -one DBD-driver didn't like them at all. As the performance gains -from bound params are not really necessary here, we simply do -not use them. - |