Storage/Handler/DBI.pm

#################################
#
#  $Id: DBI.pm,v 1.16 2003/04/11 01:17:18 joko Exp $
#
#  $Log: DBI.pm,v $
#  Revision 1.16  2003/04/11 01:17:18  joko
#  sendQuery:
#  + introduced crud action 'DELETE'
#  + some pre-flight checks
#
#  Revision 1.15  2003/04/09 07:53:33  joko
#  minor namespace update
#
#  Revision 1.14  2003/04/09 06:06:04  joko
#  sendQuery now is capable of doing 'SELECT'- or 'INSERT'-queries
#
#  Revision 1.13  2003/04/08 23:06:45  joko
#  renamed core database helper functions
#
#  Revision 1.12  2003/01/30 22:28:21  joko
#  + implemented new concrete methods
#
#  Revision 1.11  2002/12/19 16:31:05  joko
#  + sub dropDb
#  + sub rebuildDb
#
#  Revision 1.10  2002/12/15 02:02:22  joko
#  + fixed logging-message
#
#  Revision 1.9  2002/12/05 07:58:20  joko
#  + now using Tie::SecureHash as a base for the COREHANDLE
#  + former public COREHANDLE becomes private _COREHANDLE now
#
#  Revision 1.8  2002/12/01 22:20:43  joko
#  + sub createDb (from Storage.pm)
#
#  Revision 1.7  2002/12/01 07:09:09  joko
#  + sub getListFiltered (dummy redirecting to getListUnfiltered)
#
#  Revision 1.6  2002/12/01 04:46:01  joko
#  + sub eraseAll
#
#  Revision 1.5  2002/11/29 05:00:26  joko
#  + sub getListUnfiltered
#  + sub sendQuery
#
#  Revision 1.4  2002/11/17 08:46:42  jonen
#  + wrapped eval around DBI->connect to prevent deaths
#
#  Revision 1.3  2002/11/17 06:34:39  joko
#  + locator metadata can now be reached via ->{locator}
#  - sub hash2sql now taken from libdb
#
#  Revision 1.2  2002/10/25 11:43:27  joko
#  + enhanced robustness
#  + more logging for debug-levels
#
#  Revision 1.1  2002/10/10 03:44:07  cvsjoko
#  + new
#
#
#################################

package Data::Storage::Handler::DBI;

use strict;
use warnings;

use base ("Data::Storage::Handler::Abstract");


use DBI;
use Data::Dumper;
use shortcuts::database qw( hash2sql dsn2dbname );
use Data::Storage::Result::DBI;


# get logger instance
my $logger = Log::Dispatch::Config->instance;


sub getMetaInfo {
  my $self = shift;
  $logger->debug( __PACKAGE__ . "->getMetaInfo()"  );
  return {
    'disconnectMethod' => 'disconnect',
  };
}

sub connect {

    my $self = shift;
    
    # create handle
      if ( my $dsn = $self->{locator}->{dbi}->{dsn} ) {
      #if ( my $dsn = $self->{locator}->{dsn} ) {
        $logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" );
        
        # HACK:
        # set errorhandler before actually calling DBI->connect 
        # in order to catch errors from the very beginning
        #DBI->{HandleError} = $self->{dbi}->{HandleError};
        
        #use Data::Dumper; print Dumper($self->{dbi});
        
        eval {
          $self->{_COREHANDLE} = DBI->connect( $dsn, '', '', $self->{locator}->{dbi} );
          if (!$self->{_COREHANDLE}) {
            $logger->warning( __PACKAGE__ . "->connect failed: " . DBI::errstr );
            return;
          }
        };
        $logger->warning( __PACKAGE__ . "->connect failed: " . $@ ) if $@;

      }
      $self->configureCOREHANDLE();

    $self->{locator}->{status}->{connected} = 1;

    return 1;
    
}

sub configureCOREHANDLE {

  my $self = shift;

  $logger->debug( __PACKAGE__ . "->configureCOREHANDLE" );

  return if !$self->{_COREHANDLE};

  # apply configured modifications to DBI-handle
    if (exists $self->{locator}->{dbi}->{trace_level} && exists $self->{locator}->{dbi}->{trace_file}) {
      $self->{_COREHANDLE}->trace($self->{locator}->{dbi}->{trace_level}, $self->{locator}->{dbi}->{trace_file});
    }
    if (exists $self->{locator}->{dbi}->{RaiseError}) {
      $self->{_COREHANDLE}->{RaiseError} = $self->{locator}->{dbi}->{RaiseError};
    }
    if (exists $self->{locator}->{dbi}->{PrintError}) {
      $self->{_COREHANDLE}->{PrintError} = $self->{locator}->{dbi}->{PrintError};
    }
    if (exists $self->{locator}->{dbi}->{HandleError}) {
      $self->{_COREHANDLE}->{HandleError} = $self->{locator}->{dbi}->{HandleError};
    }

}

sub _sendSql {
  my $self = shift;
  my $sql = shift;
  
  # pre-flight check: is $sql defined?
  if (!$sql) {
    $logger->warning( __PACKAGE__ . "->_sendSql: \$sql was empty." );
    return;
  }
  
  # two-level handling for implicit connect:
  # if there's no corehandle ...
  if (!$self->{_COREHANDLE}) {
    # ... try to connect, but ...
    $self->connect();
    # ... if this still fails, there's something wrong probably, so we won't continue
    if (!$self->{_COREHANDLE}) {
      return;
    }
  }
  
  #print "prepare sql: $sql\n";
  
  my $sth = $self->{_COREHANDLE}->prepare($sql);
  $sth->execute();
  return $sth;
}

sub sendCommand {
  my $self = shift;
  my $command = shift;
  # TODO: when tracing: yes, do actually log this
  #$logger->debug( __PACKAGE__ . "->sendCommand( command $command )" );
  my $cmdHandle = $self->_sendSql($command);
  my $result = Data::Storage::Result::DBI->new( RESULTHANDLE => $cmdHandle );
  return $result;
}

sub getChildNodes {
  my $self = shift;
  my @nodes;
  $logger->debug( __PACKAGE__ . "->getChildNodes()" );
  my $locator = $self->{locator};
  #print Dumper($locator); exit;
  if (my $result = $self->sendCommand( 'SHOW TABLES;' ) ) {
    my $dbname = dsn2dbname($self->{locator}->{dbi}->{dsn});
    my $key = "Tables_in_$dbname";
    while ( my $row = $result->getNextEntry() ) {
      push @nodes, $row->{$key};
    }
  }
  return \@nodes;
}

sub getListUnfiltered {
  my $self = shift;
  my $nodename = shift;
  my @list;
  $logger->debug( __PACKAGE__ . "->getListUnfiltered( nodename => '" . $nodename . "' )" );
  # get list of rows from rdbms by table name
  my $result = $self->sendCommand("SELECT * FROM $nodename");
  while ( my $row = $result->getNextEntry() ) {
    push @list, $row;
  }
  return \@list;
}

sub sendQuery {
  my $self = shift;
  my $query = shift;

  $logger->debug( __PACKAGE__ . "->sendQuery" );

  my $crud = $query->{options}->{crud};
  $crud ||= $query->{options}->{action};
  $crud ||= 'RETRIEVE';

  if (my $guid = $query->{options}->{GUID}) {
    $query->{criterias} = [ { key => 'guid', op => 'eq', val => $guid } ];
  }

  # check criterias (load & save)
  #my $sql = "SELECT cs FROM $self->{metainfo}->{$descent}->{node} WHERE $self->{metainfo}->{$descent}->{IdentProvider}->{arg}='$self->{entry}->{source}->{ident}';";
  #my $result = $self->{metainfo}->{$descent}->{storage}->sendCommand($sql);
  my @crits;
  foreach (@{$query->{criterias}}) {
    my $op = '';
    $op = '=' if lc $_->{op} eq 'eq';
    push @crits, "$_->{key}$op'$_->{val}'";
  }
  # HACK: this is hardcoded ;(    expand possibilities!
  my $crit = join(' AND ', @crits);
  
  # check subnodes (load)
  my $subnodes = {};
  map { $subnodes->{$_}++ } @{$query->{subnodes}};
  
  # check payload (save)
  #print Dumper($query->{payload});
  #$subnodes ||= $query->{payload};
  
  # dispatch action
  if ($crud eq 'RETRIEVE') {
    my $sql = hash2sql($query->{node}, $subnodes, 'SELECT', $crit);
    return $self->sendCommand($sql);

  } elsif ($crud eq 'UPDATE') {
    my $sql = hash2sql($query->{node}, $query->{payload}, 'UPDATE', $crit);
    $self->sendCommand($sql);

  } elsif ($crud eq 'DELETE') {
    my $sql = hash2sql($query->{node}, $query->{payload}, 'DELETE', $crit);
    $self->sendCommand($sql);

  }

}

sub eraseAll {
  my $self = shift;
  my $classname = shift;
  $logger->debug( __PACKAGE__ . "->eraseAll" );
  my $sql = "DELETE FROM $classname";
  $self->sendCommand($sql);
}

# TODO: actually implement the filtering functionality using $this->sendQuery
sub getListFiltered {
  my $self = shift;
  my $nodename = shift;
  return $self->getListUnfiltered($nodename);
}

# TODO: do this via a parametrized "$self->connect(<connect just to database server - don't select database>)"
sub createDb {
  
  my $self = shift;
  
  # get dsn from Data::Storage::Locator instance
  my $dsn = $self->{locator}->{dbi}->{dsn};

  $logger->debug( __PACKAGE__ .  "->createDb( dsn $dsn )" );

  # remove database setting from dsn-string
  $dsn =~ s/database=(.+?);//;
  
  # remember extracted database name to know what actually to create right now
  my $database_name = $1;

  # flag to indicate goodness
  my $ok;
  
  # connect to database server - don't select/use any specific database
  #if ( my $dbh = DBI->connect($dsn, '', '', { PrintError => 0 } ) ) {
  if ( my $dbh = DBI->connect($dsn, '', '', $self->{locator}->{dbi} ) ) {

    if ($database_name) {
      if ($dbh->do("CREATE DATABASE $database_name")) {
        $ok = 1;
      }
    }

    $dbh->disconnect();

  }
  
  return $ok;
  
}

sub getCOREHANDLE {
  my $self = shift;
  return $self->{_COREHANDLE};
}

sub dropDb {
  my $self = shift;
  my $dsn = $self->{locator}->{dbi}->{dsn};

  $logger->debug( __PACKAGE__ .  "->dropDb( dsn $dsn )" );

  $dsn =~ s/database=(.+?);//;
  my $database_name = $1;

  my $ok;
  
  if ( my $dbh = DBI->connect($dsn, '', '', {
                                                      PrintError => 0,
                                                      } ) ) {
    if ($database_name) {
      if ($dbh->do("DROP DATABASE $database_name;")) {
        $ok = 1;
      }
    }

    $dbh->disconnect();

  }
  
  return $ok;
}

sub rebuildDb {
  my $self = shift;
  $logger->info( __PACKAGE__ . "->rebuildDb()" );
  my @results;

  # sum up results (bool (0/1)) in array
  #push @results, $self->retreatSchema();
  push @results, $self->dropDb();
  push @results, $self->createDb();
  #push @results, $self->deploySchema();

  # scan array for "bad ones"
  my $res = 1;
  map {
    $res = 0 if (!$_);
  } @results;
  
  return $res;
}

sub testAvailability {
  my $self = shift;
  my $status = $self->testDsn();
  $self->{locator}->{status}->{available} = $status;
  return $status;
}

sub testDsn {
  my $self = shift;
  my $dsn = $self->{locator}->{dbi}->{dsn};
  my $result;
  if ( my $dbh = DBI->connect($dsn, '', '', {
                                                      PrintError => 0,
                                                      } ) ) {
    
    # TODO: REVIEW
    $dbh->disconnect();
    
    return 1;
  } else {
    $logger->warning( __PACKAGE__ .  "[$self->{locator}->{type}]" . "->testDsn(): " . "DBI-error: " . $DBI::errstr );
  }
}

1;
__END__
1	cvsjoko	1.1	#################################
2			#
3	joko	1.17	# $Id: DBI.pm,v 1.16 2003/04/11 01:17:18 joko Exp $
4	joko	1.2	#
5			# $Log: DBI.pm,v $
6	joko	1.17	# Revision 1.16 2003/04/11 01:17:18 joko
7			# sendQuery:
8			# + introduced crud action 'DELETE'
9			# + some pre-flight checks
10			#
11	joko	1.16	# Revision 1.15 2003/04/09 07:53:33 joko
12			# minor namespace update
13			#
14	joko	1.15	# Revision 1.14 2003/04/09 06:06:04 joko
15			# sendQuery now is capable of doing 'SELECT'- or 'INSERT'-queries
16			#
17	joko	1.14	# Revision 1.13 2003/04/08 23:06:45 joko
18			# renamed core database helper functions
19			#
20	joko	1.13	# Revision 1.12 2003/01/30 22:28:21 joko
21			# + implemented new concrete methods
22			#
23	joko	1.12	# Revision 1.11 2002/12/19 16:31:05 joko
24			# + sub dropDb
25			# + sub rebuildDb
26			#
27	joko	1.11	# Revision 1.10 2002/12/15 02:02:22 joko
28			# + fixed logging-message
29			#
30	joko	1.10	# Revision 1.9 2002/12/05 07:58:20 joko
31			# + now using Tie::SecureHash as a base for the COREHANDLE
32			# + former public COREHANDLE becomes private _COREHANDLE now
33			#
34	joko	1.9	# Revision 1.8 2002/12/01 22:20:43 joko
35			# + sub createDb (from Storage.pm)
36			#
37	joko	1.8	# Revision 1.7 2002/12/01 07:09:09 joko
38			# + sub getListFiltered (dummy redirecting to getListUnfiltered)
39			#
40	joko	1.7	# Revision 1.6 2002/12/01 04:46:01 joko
41			# + sub eraseAll
42			#
43	joko	1.6	# Revision 1.5 2002/11/29 05:00:26 joko
44			# + sub getListUnfiltered
45			# + sub sendQuery
46			#
47	joko	1.5	# Revision 1.4 2002/11/17 08:46:42 jonen
48			# + wrapped eval around DBI->connect to prevent deaths
49			#
50	jonen	1.4	# Revision 1.3 2002/11/17 06:34:39 joko
51			# + locator metadata can now be reached via ->{locator}
52			# - sub hash2sql now taken from libdb
53			#
54	joko	1.3	# Revision 1.2 2002/10/25 11:43:27 joko
55			# + enhanced robustness
56			# + more logging for debug-levels
57			#
58	joko	1.2	# Revision 1.1 2002/10/10 03:44:07 cvsjoko
59			# + new
60	cvsjoko	1.1	#
61			#
62			#################################
63
64			package Data::Storage::Handler::DBI;
65
66			use strict;
67			use warnings;
68
69			use base ("Data::Storage::Handler::Abstract");
70
71	joko	1.13
72	cvsjoko	1.1	use DBI;
73	joko	1.3	use Data::Dumper;
74	joko	1.15	use shortcuts::database qw( hash2sql dsn2dbname );
75	joko	1.5	use Data::Storage::Result::DBI;
76	cvsjoko	1.1
77	joko	1.13
78	cvsjoko	1.1	# get logger instance
79			my $logger = Log::Dispatch::Config->instance;
80
81
82	joko	1.5	sub getMetaInfo {
83			my $self = shift;
84			$logger->debug( __PACKAGE__ . "->getMetaInfo()" );
85			return {
86			'disconnectMethod' => 'disconnect',
87			};
88			}
89	cvsjoko	1.1
90			sub connect {
91
92			my $self = shift;
93
94			# create handle
95	joko	1.3	if ( my $dsn = $self->{locator}->{dbi}->{dsn} ) {
96			#if ( my $dsn = $self->{locator}->{dsn} ) {
97	joko	1.2	$logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" );
98
99			# HACK:
100			# set errorhandler before actually calling DBI->connect
101			# in order to catch errors from the very beginning
102			#DBI->{HandleError} = $self->{dbi}->{HandleError};
103
104			#use Data::Dumper; print Dumper($self->{dbi});
105
106	jonen	1.4	eval {
107	joko	1.9	$self->{_COREHANDLE} = DBI->connect( $dsn, '', '', $self->{locator}->{dbi} );
108			if (!$self->{_COREHANDLE}) {
109	jonen	1.4	$logger->warning( __PACKAGE__ . "->connect failed: " . DBI::errstr );
110			return;
111			}
112			};
113			$logger->warning( __PACKAGE__ . "->connect failed: " . $@ ) if $@;
114
115	cvsjoko	1.1	}
116			$self->configureCOREHANDLE();
117	joko	1.3
118			$self->{locator}->{status}->{connected} = 1;
119
120	joko	1.2	return 1;
121
122	cvsjoko	1.1	}
123
124			sub configureCOREHANDLE {
125
126			my $self = shift;
127
128	joko	1.3	$logger->debug( __PACKAGE__ . "->configureCOREHANDLE" );
129	cvsjoko	1.1
130	joko	1.9	return if !$self->{_COREHANDLE};
131	joko	1.8
132	joko	1.5	# apply configured modifications to DBI-handle
133	joko	1.3	if (exists $self->{locator}->{dbi}->{trace_level} && exists $self->{locator}->{dbi}->{trace_file}) {
134	joko	1.9	$self->{_COREHANDLE}->trace($self->{locator}->{dbi}->{trace_level}, $self->{locator}->{dbi}->{trace_file});
135	cvsjoko	1.1	}
136	joko	1.3	if (exists $self->{locator}->{dbi}->{RaiseError}) {
137	joko	1.9	$self->{_COREHANDLE}->{RaiseError} = $self->{locator}->{dbi}->{RaiseError};
138	cvsjoko	1.1	}
139	joko	1.3	if (exists $self->{locator}->{dbi}->{PrintError}) {
140	joko	1.9	$self->{_COREHANDLE}->{PrintError} = $self->{locator}->{dbi}->{PrintError};
141	cvsjoko	1.1	}
142	joko	1.3	if (exists $self->{locator}->{dbi}->{HandleError}) {
143	joko	1.9	$self->{_COREHANDLE}->{HandleError} = $self->{locator}->{dbi}->{HandleError};
144	cvsjoko	1.1	}
145
146			}
147
148			sub _sendSql {
149			my $self = shift;
150			my $sql = shift;
151	joko	1.2
152	joko	1.16	# pre-flight check: is $sql defined?
153			if (!$sql) {
154			$logger->warning( __PACKAGE__ . "->_sendSql: \$sql was empty." );
155			return;
156			}
157
158	joko	1.2	# two-level handling for implicit connect:
159			# if there's no corehandle ...
160	joko	1.9	if (!$self->{_COREHANDLE}) {
161	joko	1.2	# ... try to connect, but ...
162			$self->connect();
163			# ... if this still fails, there's something wrong probably, so we won't continue
164	joko	1.9	if (!$self->{_COREHANDLE}) {
165	joko	1.2	return;
166			}
167			}
168
169	joko	1.3	#print "prepare sql: $sql\n";
170
171	joko	1.9	my $sth = $self->{_COREHANDLE}->prepare($sql);
172	cvsjoko	1.1	$sth->execute();
173			return $sth;
174			}
175
176			sub sendCommand {
177			my $self = shift;
178			my $command = shift;
179	joko	1.5	# TODO: when tracing: yes, do actually log this
180	joko	1.2	#$logger->debug( __PACKAGE__ . "->sendCommand( command $command )" );
181	cvsjoko	1.1	my $cmdHandle = $self->_sendSql($command);
182			my $result = Data::Storage::Result::DBI->new( RESULTHANDLE => $cmdHandle );
183			return $result;
184			}
185
186			sub getChildNodes {
187			my $self = shift;
188			my @nodes;
189	joko	1.3	$logger->debug( __PACKAGE__ . "->getChildNodes()" );
190	joko	1.9	my $locator = $self->{locator};
191			#print Dumper($locator); exit;
192	cvsjoko	1.1	if (my $result = $self->sendCommand( 'SHOW TABLES;' ) ) {
193	joko	1.13	my $dbname = dsn2dbname($self->{locator}->{dbi}->{dsn});
194	joko	1.3	my $key = "Tables_in_$dbname";
195	joko	1.5	while ( my $row = $result->getNextEntry() ) {
196	joko	1.3	push @nodes, $row->{$key};
197	cvsjoko	1.1	}
198			}
199			return \@nodes;
200			}
201
202	joko	1.5	sub getListUnfiltered {
203	cvsjoko	1.1	my $self = shift;
204	joko	1.5	my $nodename = shift;
205			my @list;
206			$logger->debug( __PACKAGE__ . "->getListUnfiltered( nodename => '" . $nodename . "' )" );
207			# get list of rows from rdbms by table name
208			my $result = $self->sendCommand("SELECT * FROM $nodename");
209			while ( my $row = $result->getNextEntry() ) {
210			push @list, $row;
211			}
212			return \@list;
213	cvsjoko	1.1	}
214
215	joko	1.5	sub sendQuery {
216	cvsjoko	1.1	my $self = shift;
217	joko	1.5	my $query = shift;
218	joko	1.10
219			$logger->debug( __PACKAGE__ . "->sendQuery" );
220
221	joko	1.16	my $crud = $query->{options}->{crud};
222			$crud \|\|= $query->{options}->{action};
223			$crud \|\|= 'RETRIEVE';
224	joko	1.14
225			if (my $guid = $query->{options}->{GUID}) {
226			$query->{criterias} = [ { key => 'guid', op => 'eq', val => $guid } ];
227			}
228
229			# check criterias (load & save)
230	joko	1.5	#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($sql);
232			my @crits;
233			foreach (@{$query->{criterias}}) {
234			my $op = '';
235			$op = '=' if lc $_->{op} eq 'eq';
236			push @crits, "$_->{key}$op'$_->{val}'";
237			}
238	joko	1.14	# HACK: this is hardcoded ;( expand possibilities!
239			my $crit = join(' AND ', @crits);
240
241			# check subnodes (load)
242	joko	1.5	my $subnodes = {};
243			map { $subnodes->{$_}++ } @{$query->{subnodes}};
244	joko	1.14
245			# check payload (save)
246			#print Dumper($query->{payload});
247			#$subnodes \|\|= $query->{payload};
248
249			# dispatch action
250	joko	1.16	if ($crud eq 'RETRIEVE') {
251	joko	1.14	my $sql = hash2sql($query->{node}, $subnodes, 'SELECT', $crit);
252			return $self->sendCommand($sql);
253	joko	1.16
254			} elsif ($crud eq 'UPDATE') {
255	joko	1.14	my $sql = hash2sql($query->{node}, $query->{payload}, 'UPDATE', $crit);
256			$self->sendCommand($sql);
257	joko	1.16
258			} elsif ($crud eq 'DELETE') {
259			my $sql = hash2sql($query->{node}, $query->{payload}, 'DELETE', $crit);
260			$self->sendCommand($sql);
261
262	joko	1.14	}
263
264	joko	1.6	}
265
266			sub eraseAll {
267			my $self = shift;
268			my $classname = shift;
269	joko	1.10	$logger->debug( __PACKAGE__ . "->eraseAll" );
270	joko	1.6	my $sql = "DELETE FROM $classname";
271			$self->sendCommand($sql);
272	joko	1.7	}
273
274			# TODO: actually implement the filtering functionality using $this->sendQuery
275			sub getListFiltered {
276			my $self = shift;
277			my $nodename = shift;
278			return $self->getListUnfiltered($nodename);
279	joko	1.8	}
280
281			# TODO: do this via a parametrized "$self->connect(<connect just to database server - don't select database>)"
282			sub createDb {
283
284			my $self = shift;
285
286			# get dsn from Data::Storage::Locator instance
287			my $dsn = $self->{locator}->{dbi}->{dsn};
288
289			$logger->debug( __PACKAGE__ . "->createDb( dsn $dsn )" );
290
291			# remove database setting from dsn-string
292			$dsn =~ s/database=(.+?);//;
293
294			# remember extracted database name to know what actually to create right now
295			my $database_name = $1;
296
297			# flag to indicate goodness
298			my $ok;
299
300			# connect to database server - don't select/use any specific database
301			#if ( my $dbh = DBI->connect($dsn, '', '', { PrintError => 0 } ) ) {
302			if ( my $dbh = DBI->connect($dsn, '', '', $self->{locator}->{dbi} ) ) {
303
304			if ($database_name) {
305			if ($dbh->do("CREATE DATABASE $database_name")) {
306			$ok = 1;
307			}
308			}
309
310			$dbh->disconnect();
311
312			}
313
314			return $ok;
315
316	joko	1.9	}
317
318	joko	1.17	sub getCOREHANDLE {
319	joko	1.9	my $self = shift;
320			return $self->{_COREHANDLE};
321	joko	1.11	}
322
323			sub dropDb {
324			my $self = shift;
325			my $dsn = $self->{locator}->{dbi}->{dsn};
326
327			$logger->debug( __PACKAGE__ . "->dropDb( dsn $dsn )" );
328
329			$dsn =~ s/database=(.+?);//;
330			my $database_name = $1;
331
332			my $ok;
333
334			if ( my $dbh = DBI->connect($dsn, '', '', {
335			PrintError => 0,
336			} ) ) {
337			if ($database_name) {
338			if ($dbh->do("DROP DATABASE $database_name;")) {
339			$ok = 1;
340			}
341			}
342
343			$dbh->disconnect();
344
345			}
346
347			return $ok;
348			}
349
350			sub rebuildDb {
351			my $self = shift;
352			$logger->info( __PACKAGE__ . "->rebuildDb()" );
353			my @results;
354
355			# sum up results (bool (0/1)) in array
356			#push @results, $self->retreatSchema();
357			push @results, $self->dropDb();
358			push @results, $self->createDb();
359			#push @results, $self->deploySchema();
360
361			# scan array for "bad ones"
362			my $res = 1;
363			map {
364			$res = 0 if (!$_);
365			} @results;
366
367			return $res;
368	cvsjoko	1.1	}
369
370	joko	1.12	sub testAvailability {
371			my $self = shift;
372			my $status = $self->testDsn();
373			$self->{locator}->{status}->{available} = $status;
374			return $status;
375			}
376
377			sub testDsn {
378			my $self = shift;
379			my $dsn = $self->{locator}->{dbi}->{dsn};
380			my $result;
381			if ( my $dbh = DBI->connect($dsn, '', '', {
382			PrintError => 0,
383			} ) ) {
384
385			# TODO: REVIEW
386			$dbh->disconnect();
387
388			return 1;
389			} else {
390			$logger->warning( __PACKAGE__ . "[$self->{locator}->{type}]" . "->testDsn(): " . "DBI-error: " . $DBI::errstr );
391			}
392			}
393
394	jonen	1.4	1;
395	joko	1.12	__END__
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