/[cvs]/nfo/perl/libs/Data/Storage/Handler/DBI.pm
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revision 1.12 by joko, Thu Jan 30 22:28:21 2003 UTC revision 1.16 by joko, Fri Apr 11 01:17:18 2003 UTC
# Line 3  Line 3 
3  #  $Id$  #  $Id$
4  #  #
5  #  $Log$  #  $Log$
6    #  Revision 1.16  2003/04/11 01:17:18  joko
7    #  sendQuery:
8    #  + introduced crud action 'DELETE'
9    #  + some pre-flight checks
10    #
11    #  Revision 1.15  2003/04/09 07:53:33  joko
12    #  minor namespace update
13    #
14    #  Revision 1.14  2003/04/09 06:06:04  joko
15    #  sendQuery now is capable of doing 'SELECT'- or 'INSERT'-queries
16    #
17    #  Revision 1.13  2003/04/08 23:06:45  joko
18    #  renamed core database helper functions
19    #
20  #  Revision 1.12  2003/01/30 22:28:21  joko  #  Revision 1.12  2003/01/30 22:28:21  joko
21  #  + implemented new concrete methods  #  + implemented new concrete methods
22  #  #
# Line 54  use warnings; Line 68  use warnings;
68    
69  use base ("Data::Storage::Handler::Abstract");  use base ("Data::Storage::Handler::Abstract");
70    
71    
72  use DBI;  use DBI;
73  use Data::Dumper;  use Data::Dumper;
74  use libdb qw( getDbNameByDsn hash2Sql );  use shortcuts::database qw( hash2sql dsn2dbname );
75  use Data::Storage::Result::DBI;  use Data::Storage::Result::DBI;
76    
77    
78  # get logger instance  # get logger instance
79  my $logger = Log::Dispatch::Config->instance;  my $logger = Log::Dispatch::Config->instance;
80    
# Line 133  sub _sendSql { Line 149  sub _sendSql {
149    my $self = shift;    my $self = shift;
150    my $sql = shift;    my $sql = shift;
151        
152      # pre-flight check: is $sql defined?
153      if (!$sql) {
154        $logger->warning( __PACKAGE__ . "->_sendSql: \$sql was empty." );
155        return;
156      }
157      
158    # two-level handling for implicit connect:    # two-level handling for implicit connect:
159    # if there's no corehandle ...    # if there's no corehandle ...
160    if (!$self->{_COREHANDLE}) {    if (!$self->{_COREHANDLE}) {
# Line 168  sub getChildNodes { Line 190  sub getChildNodes {
190    my $locator = $self->{locator};    my $locator = $self->{locator};
191    #print Dumper($locator); exit;    #print Dumper($locator); exit;
192    if (my $result = $self->sendCommand( 'SHOW TABLES;' ) ) {    if (my $result = $self->sendCommand( 'SHOW TABLES;' ) ) {
193      my $dbname = getDbNameByDsn($self->{locator}->{dbi}->{dsn});      my $dbname = dsn2dbname($self->{locator}->{dbi}->{dsn});
194      my $key = "Tables_in_$dbname";      my $key = "Tables_in_$dbname";
195      while ( my $row = $result->getNextEntry() ) {      while ( my $row = $result->getNextEntry() ) {
196        push @nodes, $row->{$key};        push @nodes, $row->{$key};
# Line 196  sub sendQuery { Line 218  sub sendQuery {
218    
219    $logger->debug( __PACKAGE__ . "->sendQuery" );    $logger->debug( __PACKAGE__ . "->sendQuery" );
220    
221      my $crud = $query->{options}->{crud};
222      $crud ||= $query->{options}->{action};
223      $crud ||= 'RETRIEVE';
224    
225      if (my $guid = $query->{options}->{GUID}) {
226        $query->{criterias} = [ { key => 'guid', op => 'eq', val => $guid } ];
227      }
228    
229      # check criterias (load & save)
230    #my $sql = "SELECT cs FROM $self->{metainfo}->{$descent}->{node} WHERE $self->{metainfo}->{$descent}->{IdentProvider}->{arg}='$self->{entry}->{source}->{ident}';";    #my $sql = "SELECT cs FROM $self->{metainfo}->{$descent}->{node} WHERE $self->{metainfo}->{$descent}->{IdentProvider}->{arg}='$self->{entry}->{source}->{ident}';";
231    #my $result = $self->{metainfo}->{$descent}->{storage}->sendCommand($sql);    #my $result = $self->{metainfo}->{$descent}->{storage}->sendCommand($sql);
232    my @crits;    my @crits;
# Line 204  sub sendQuery { Line 235  sub sendQuery {
235      $op = '=' if lc $_->{op} eq 'eq';      $op = '=' if lc $_->{op} eq 'eq';
236      push @crits, "$_->{key}$op'$_->{val}'";      push @crits, "$_->{key}$op'$_->{val}'";
237    }    }
   my $subnodes = {};  
   map { $subnodes->{$_}++ } @{$query->{subnodes}};  
238    # HACK: this is hardcoded ;(    expand possibilities!    # HACK: this is hardcoded ;(    expand possibilities!
239    my $crit = join(' AND ', @crits);    my $crit = join(' AND ', @crits);
240    my $sql = hash2Sql($query->{node}, $subnodes, 'SELECT', $crit);    
241    return $self->sendCommand($sql);    # check subnodes (load)
242      my $subnodes = {};
243      map { $subnodes->{$_}++ } @{$query->{subnodes}};
244      
245      # check payload (save)
246      #print Dumper($query->{payload});
247      #$subnodes ||= $query->{payload};
248      
249      # dispatch action
250      if ($crud eq 'RETRIEVE') {
251        my $sql = hash2sql($query->{node}, $subnodes, 'SELECT', $crit);
252        return $self->sendCommand($sql);
253    
254      } elsif ($crud eq 'UPDATE') {
255        my $sql = hash2sql($query->{node}, $query->{payload}, 'UPDATE', $crit);
256        $self->sendCommand($sql);
257    
258      } elsif ($crud eq 'DELETE') {
259        my $sql = hash2sql($query->{node}, $query->{payload}, 'DELETE', $crit);
260        $self->sendCommand($sql);
261    
262      }
263    
264  }  }
265    
266  sub eraseAll {  sub eraseAll {
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