/[cvs]/nfo/perl/libs/Data/Storage/Handler/DBI.pm
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revision 1.2 by joko, Fri Oct 25 11:43:27 2002 UTC revision 1.4 by jonen, Sun Nov 17 08:46:42 2002 UTC
# Line 3  Line 3 
3  #  $Id$  #  $Id$
4  #  #
5  #  $Log$  #  $Log$
6    #  Revision 1.4  2002/11/17 08:46:42  jonen
7    #  + wrapped eval around DBI->connect to prevent deaths
8    #
9    #  Revision 1.3  2002/11/17 06:34:39  joko
10    #  + locator metadata can now be reached via ->{locator}
11    #  - sub hash2sql now taken from libdb
12    #
13  #  Revision 1.2  2002/10/25 11:43:27  joko  #  Revision 1.2  2002/10/25 11:43:27  joko
14  #  + enhanced robustness  #  + enhanced robustness
15  #  + more logging for debug-levels  #  + more logging for debug-levels
# Line 21  use warnings; Line 28  use warnings;
28  use base ("Data::Storage::Handler::Abstract");  use base ("Data::Storage::Handler::Abstract");
29    
30  use DBI;  use DBI;
31    use Data::Dumper;
32    use libdb;
33    
34  # get logger instance  # get logger instance
35  my $logger = Log::Dispatch::Config->instance;  my $logger = Log::Dispatch::Config->instance;
# Line 35  sub connect { Line 44  sub connect {
44      my $self = shift;      my $self = shift;
45            
46      # create handle      # create handle
47        if ( my $dsn = $self->{dbi}->{dsn} ) {        if ( my $dsn = $self->{locator}->{dbi}->{dsn} ) {
48          #if ( my $dsn = $self->{locator}->{dsn} ) {
49          $logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" );          $logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" );
50                    
51          # HACK:          # HACK:
# Line 45  sub connect { Line 55  sub connect {
55                    
56          #use Data::Dumper; print Dumper($self->{dbi});          #use Data::Dumper; print Dumper($self->{dbi});
57                    
58          $self->{COREHANDLE} = DBI->connect(          eval {
59            $dsn, '', '', {            $self->{COREHANDLE} = DBI->connect( $dsn, '', '', $self->{locator}->{dbi} );
60              RaiseError => $self->{dbi}->{RaiseError},            if (!$self->{COREHANDLE}) {
61              #RaiseError => 1,              $logger->warning( __PACKAGE__ . "->connect failed: " . DBI::errstr );
62              PrintError => $self->{dbi}->{PrintError},              return;
             HandleError => $self->{dbi}->{HandleError},  
63            }            }
64          );          };
65          if (!$self->{COREHANDLE}) {          $logger->warning( __PACKAGE__ . "->connect failed: " . $@ ) if $@;
66            $logger->warning( __PACKAGE__ . "->connect failed: " . DBI::errstr );  
           return;  
         }  
67        }        }
68        $self->configureCOREHANDLE();        $self->configureCOREHANDLE();
69        
70        $self->{locator}->{status}->{connected} = 1;
71    
72      return 1;      return 1;
73            
74  }  }
# Line 68  sub configureCOREHANDLE { Line 77  sub configureCOREHANDLE {
77    
78    my $self = shift;    my $self = shift;
79    
80    $logger->debug( __PACKAGE__ . "->_configureCOREHANDLE" );    $logger->debug( __PACKAGE__ . "->configureCOREHANDLE" );
81    
82    # apply configured modifications    # apply configured modifications
83      if (exists $self->{dbi}->{trace_level} && exists $self->{dbi}->{trace_file}) {      if (exists $self->{locator}->{dbi}->{trace_level} && exists $self->{locator}->{dbi}->{trace_file}) {
84        $self->{COREHANDLE}->trace($self->{dbi}->{trace_level}, $self->{dbi}->{trace_file});        $self->{COREHANDLE}->trace($self->{locator}->{dbi}->{trace_level}, $self->{locator}->{dbi}->{trace_file});
85      }      }
86      if (exists $self->{dbi}->{RaiseError}) {      if (exists $self->{locator}->{dbi}->{RaiseError}) {
87        $self->{COREHANDLE}->{RaiseError} = $self->{dbi}->{RaiseError};        $self->{COREHANDLE}->{RaiseError} = $self->{locator}->{dbi}->{RaiseError};
88      }      }
89      if (exists $self->{dbi}->{PrintError}) {      if (exists $self->{locator}->{dbi}->{PrintError}) {
90        $self->{COREHANDLE}->{PrintError} = $self->{dbi}->{PrintError};        $self->{COREHANDLE}->{PrintError} = $self->{locator}->{dbi}->{PrintError};
91      }      }
92      if (exists $self->{dbi}->{HandleError}) {      if (exists $self->{locator}->{dbi}->{HandleError}) {
93        $self->{COREHANDLE}->{HandleError} = $self->{dbi}->{HandleError};        $self->{COREHANDLE}->{HandleError} = $self->{locator}->{dbi}->{HandleError};
94      }      }
95    
96  }  }
# Line 101  sub _sendSql { Line 110  sub _sendSql {
110      }      }
111    }    }
112        
113      #print "prepare sql: $sql\n";
114      
115    my $sth = $self->{COREHANDLE}->prepare($sql);    my $sth = $self->{COREHANDLE}->prepare($sql);
116    $sth->execute();    $sth->execute();
117    return $sth;    return $sth;
# Line 124  sub quoteSql { Line 135  sub quoteSql {
135    return $string;    return $string;
136  }  }
137    
 sub hash2Sql {  
   
   my $self = shift;  
     
   my $table = shift;  
   my $hash = shift;  
   my $mode = shift;  
   my $crit = shift;  
     
   my $sql;  
   if ($mode eq 'SQL_INSERT') {  
     $sql = "INSERT INTO $table (#fields#) VALUES (#values#);";  
   }  
   if ($mode eq 'SQL_UPDATE') {  
     $sql = "UPDATE $table SET #fields-values# WHERE $crit;";  
   }  
     
   my (@fields, @values);  
   foreach my $key (keys %{$hash}) {  
     push @fields, $key;  
     push @values, $hash->{$key};  
   }  
   # quote each element  
   map { if (defined $_) { $_ = "'$_'" } else { $_ = "null" } } @values;  
     
   my $fields = join(', ', @fields);  
   my $values = join(', ', @values);  
   my $fields_values = '';  
   my $fc = 0;  
   foreach (@fields) {  
     $fields_values .= $_ . '=' . $values[$fc] . ', ';  
     $fc++;  
   }  
   $fields_values = substr($fields_values, 0, -2);  
     
   $sql =~ s/#fields#/$fields/;  
   $sql =~ s/#values#/$values/;  
   $sql =~ s/#fields-values#/$fields_values/;  
     
   return $sql;  
 }  
   
138    
139  sub getChildNodes {  sub getChildNodes {
140    
141    my $self = shift;    my $self = shift;
142    my @nodes;    my @nodes;
143    
144      $logger->debug( __PACKAGE__ . "->getChildNodes()" );
145    
146    if (my $result = $self->sendCommand( 'SHOW TABLES;' ) ) {    if (my $result = $self->sendCommand( 'SHOW TABLES;' ) ) {
147        my $dbname = getDbNameByDsn($self->{locator}->{dbi}->{dsn});
148        my $key = "Tables_in_$dbname";
149      while ( my $row = $result->_getNextEntry() ) {      while ( my $row = $result->_getNextEntry() ) {
150        push @nodes, $row;        push @nodes, $row->{$key};
151      }      }
152    }    }
153        
# Line 204  sub _getNextEntry { Line 177  sub _getNextEntry {
177  }  }
178    
179    
 1;  
180    1;
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