Storage/Handler/Tangram.pm

#################################
#
#  $Id: Tangram.pm,v 1.1 2002/10/10 03:44:07 cvsjoko Exp $
#
#  $Log: Tangram.pm,v $
#  Revision 1.1  2002/10/10 03:44:07  cvsjoko
#  + new
#
#
#################################

package Data::Storage::Handler::Tangram;

use strict;
use warnings;

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

use Tangram;
use Data::Dumper;

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


our $metainfo = {
  'disconnectMethod' => 'disconnect',
};

sub getNewPerlObjectByPkgName {
  my $pkgname = shift;
  my $args = shift;
  my $evstring = "use $pkgname;";
  eval($evstring);
  return $pkgname->new($args);
}

sub connect {

    my $self = shift;
    
    my $dsn = shift;
    $dsn ||= $self->{dbi}->{dsn};
    
    $logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" );
    
    #my $storage = Tangram::Relational->connect( $schema, $dsn );
    #my $storage = Tangram::mysql->connect( $schema, $dsn );
    #$storage = Tangram::Relational->connect( Project->schema, $dsn );
    
#    if (!testDsn($dsn)) {
#      croak("Database at \"$dsn\" is not available");
#      return;
#    }

    my $obj = getNewPerlObjectByPkgName($self->{schema}, { EXPORT_OBJECTS => $self->{classnames} } );
    $self->{schema_tangram} = $obj->getSchema();
    
    #$self->{COREHANDLE} = Tangram::Relational->connect( $schema, $dsn );
    $self->{COREHANDLE} = Tangram::Relational->connect( $self->{schema_tangram}, $dsn );
  
    #$self->{STORAGEHANDLE_UNDERLYING} = $self->getUnderlyingStorage();
    #$self->{STORAGEHANDLE_UNDERLYING}->_configureCOREHANDLE();
    #$self->_configureUnderlyingStorage;
    $self->configureCOREHANDLE();

}

sub getChildNodes {

  my $self = shift;
  my @nodes;

  # create new DBI - Data::Storage - object from already connected DBI::db - handle inside the current COREHANDLE
  #my $loc = new Data::Storage::Locator( type => "DBI", dbi => { db => $self->{COREHANDLE}->{db} });
  #my $loc = new Data::Storage::Locator( type => "DBI", COREHANDLE => $self->{COREHANDLE}->{db} );
  my $storage = $self->_getSubLayerHandle();
  #$storage->_configureCOREHANDLE();

  #if (my $result = $self->sendCommand( 'SHOW TABLES;' ) ) {
  if (my $result = $storage->sendCommand( 'SHOW TABLES;' ) ) {
    while ( my $row = $result->_getNextEntry() ) {
      push @nodes, $row;
    }
  }
  
  $storage->disconnect();
  
  return \@nodes;

}


sub _getSubLayerHandle {
  
  my $self = shift;
  
  use Data::Dumper;
  #print Dumper($self);
  
  # hack, make more generic!
  if (!$self->{STORAGE_SUBLAYER}) {
    my $loc = Data::Storage::Locator->new( type => "DBI", dbi => $self->{dbi}, COREHANDLE => $self->{COREHANDLE}->{db} );
    $self->{STORAGE_SUBLAYER} = Data::Storage->new( $loc, { protected => 1 } );
    #$self->{STORAGE_UNDER_THE_HOOD}->{STORAGEHANDLE}->_configureCOREHANDLE();
    #$self->{STORAGE_UNDER_THE_HOOD}->_configureCOREHANDLE();
  }
  
  #print Dumper($self->{STORAGE_UNDER_THE_HOOD});
  
  return $self->{STORAGE_SUBLAYER};
  
}

sub _configureUnderlyingStorage {
  
  my $self = shift;
  $self->_configureCOREHANDLE_DBI();
  return;
  
  foreach my $key (keys %{$self->{dbi}}) {
    my $val = $self->{dbi}->{$key};
    print "entry: $key; $val", "\n";
    $self->{COREHANDLE}->{db}->{$key} = $val;
  }
  #print Dumper($self->{COREHANDLE}->{db});
}


sub configureCOREHANDLE {

  my $self = shift;

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

  #my $subLayer = $self->_getSubLayerHandle();

  # apply configured modifications
    if (exists $self->{dbi}->{trace_level} && exists $self->{dbi}->{trace_file}) {
      $self->{COREHANDLE}->{db}->trace($self->{dbi}->{trace_level}, $self->{dbi}->{trace_file});
    }
    if (exists $self->{dbi}->{RaiseError}) {
      $self->{COREHANDLE}->{db}->{RaiseError} = $self->{dbi}->{RaiseError};
    }
    if (exists $self->{dbi}->{PrintError}) {
      $self->{COREHANDLE}->{db}->{PrintError} = $self->{dbi}->{PrintError};
    }
    if (exists $self->{dbi}->{HandleError}) {
      $self->{COREHANDLE}->{db}->{HandleError} = $self->{dbi}->{HandleError};
    }

}

sub deploySchema {
  my $self = shift;
  #my $dsn = $self->{locator}->{dbi}->{dsn};
  my $dsn = $self->{dbi}->{dsn};
  my $ok;
  if ( my $dbh = DBI->connect($dsn, '', '', {
                                                      PrintError => 0,
                                                    } ) ) {
    $ok = Tangram::Relational->deploy($self->{schema}, $dbh );
    $dbh->disconnect();
  }
  return $ok;
}

sub retreatSchema {
  print "retreat\n";
  my $self = shift;
  #my $dsn = $self->{locator}->{dbi}->{dsn};
  my $dsn = $self->{dbi}->{dsn};
  my $ok;
  if ( my $dbh = DBI->connect($dsn, '', '', {
                                                      PrintError => 0,
                                                    } ) ) {
    $ok = Tangram::Relational->retreat($self->{schema}, $dbh );
    $dbh->disconnect();
  }
  return $ok;
}

1;
1	cvsjoko	1.1	#################################
2			#
3	joko	1.2	# $Id: Tangram.pm,v 1.1 2002/10/10 03:44:07 cvsjoko Exp $
4			#
5			# $Log: Tangram.pm,v $
6			# Revision 1.1 2002/10/10 03:44:07 cvsjoko
7			# + new
8	cvsjoko	1.1	#
9			#
10			#################################
11
12			package Data::Storage::Handler::Tangram;
13
14			use strict;
15			use warnings;
16
17			use base ("Data::Storage::Handler::Abstract");
18
19			use Tangram;
20			use Data::Dumper;
21
22			# get logger instance
23			my $logger = Log::Dispatch::Config->instance;
24
25
26			our $metainfo = {
27			'disconnectMethod' => 'disconnect',
28			};
29
30	joko	1.2	sub getNewPerlObjectByPkgName {
31			my $pkgname = shift;
32			my $args = shift;
33			my $evstring = "use $pkgname;";
34			eval($evstring);
35			return $pkgname->new($args);
36			}
37
38	cvsjoko	1.1	sub connect {
39
40			my $self = shift;
41
42			my $dsn = shift;
43			$dsn \|\|= $self->{dbi}->{dsn};
44
45	joko	1.2	$logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" );
46	cvsjoko	1.1
47			#my $storage = Tangram::Relational->connect( $schema, $dsn );
48			#my $storage = Tangram::mysql->connect( $schema, $dsn );
49			#$storage = Tangram::Relational->connect( Project->schema, $dsn );
50
51			# if (!testDsn($dsn)) {
52			# croak("Database at \"$dsn\" is not available");
53			# return;
54			# }
55
56	joko	1.2	my $obj = getNewPerlObjectByPkgName($self->{schema}, { EXPORT_OBJECTS => $self->{classnames} } );
57			$self->{schema_tangram} = $obj->getSchema();
58
59			#$self->{COREHANDLE} = Tangram::Relational->connect( $schema, $dsn );
60			$self->{COREHANDLE} = Tangram::Relational->connect( $self->{schema_tangram}, $dsn );
61	cvsjoko	1.1
62			#$self->{STORAGEHANDLE_UNDERLYING} = $self->getUnderlyingStorage();
63			#$self->{STORAGEHANDLE_UNDERLYING}->_configureCOREHANDLE();
64			#$self->_configureUnderlyingStorage;
65			$self->configureCOREHANDLE();
66
67			}
68
69			sub getChildNodes {
70
71			my $self = shift;
72			my @nodes;
73
74			# create new DBI - Data::Storage - object from already connected DBI::db - handle inside the current COREHANDLE
75			#my $loc = new Data::Storage::Locator( type => "DBI", dbi => { db => $self->{COREHANDLE}->{db} });
76			#my $loc = new Data::Storage::Locator( type => "DBI", COREHANDLE => $self->{COREHANDLE}->{db} );
77			my $storage = $self->_getSubLayerHandle();
78			#$storage->_configureCOREHANDLE();
79
80			#if (my $result = $self->sendCommand( 'SHOW TABLES;' ) ) {
81			if (my $result = $storage->sendCommand( 'SHOW TABLES;' ) ) {
82			while ( my $row = $result->_getNextEntry() ) {
83			push @nodes, $row;
84			}
85			}
86
87			$storage->disconnect();
88
89			return \@nodes;
90
91			}
92
93
94			sub _getSubLayerHandle {
95
96			my $self = shift;
97
98			use Data::Dumper;
99			#print Dumper($self);
100
101			# hack, make more generic!
102			if (!$self->{STORAGE_SUBLAYER}) {
103	joko	1.2	my $loc = Data::Storage::Locator->new( type => "DBI", dbi => $self->{dbi}, COREHANDLE => $self->{COREHANDLE}->{db} );
104			$self->{STORAGE_SUBLAYER} = Data::Storage->new( $loc, { protected => 1 } );
105	cvsjoko	1.1	#$self->{STORAGE_UNDER_THE_HOOD}->{STORAGEHANDLE}->_configureCOREHANDLE();
106			#$self->{STORAGE_UNDER_THE_HOOD}->_configureCOREHANDLE();
107			}
108
109			#print Dumper($self->{STORAGE_UNDER_THE_HOOD});
110
111			return $self->{STORAGE_SUBLAYER};
112
113			}
114
115			sub _configureUnderlyingStorage {
116
117			my $self = shift;
118			$self->_configureCOREHANDLE_DBI();
119			return;
120
121			foreach my $key (keys %{$self->{dbi}}) {
122			my $val = $self->{dbi}->{$key};
123			print "entry: $key; $val", "\n";
124			$self->{COREHANDLE}->{db}->{$key} = $val;
125			}
126			#print Dumper($self->{COREHANDLE}->{db});
127			}
128
129
130			sub configureCOREHANDLE {
131
132			my $self = shift;
133
134			$logger->debug( __PACKAGE__ . "->_configureCOREHANDLE" );
135
136			#my $subLayer = $self->_getSubLayerHandle();
137
138			# apply configured modifications
139			if (exists $self->{dbi}->{trace_level} && exists $self->{dbi}->{trace_file}) {
140			$self->{COREHANDLE}->{db}->trace($self->{dbi}->{trace_level}, $self->{dbi}->{trace_file});
141			}
142			if (exists $self->{dbi}->{RaiseError}) {
143			$self->{COREHANDLE}->{db}->{RaiseError} = $self->{dbi}->{RaiseError};
144			}
145			if (exists $self->{dbi}->{PrintError}) {
146			$self->{COREHANDLE}->{db}->{PrintError} = $self->{dbi}->{PrintError};
147			}
148			if (exists $self->{dbi}->{HandleError}) {
149			$self->{COREHANDLE}->{db}->{HandleError} = $self->{dbi}->{HandleError};
150			}
151
152	joko	1.2	}
153
154			sub deploySchema {
155			my $self = shift;
156			#my $dsn = $self->{locator}->{dbi}->{dsn};
157			my $dsn = $self->{dbi}->{dsn};
158			my $ok;
159			if ( my $dbh = DBI->connect($dsn, '', '', {
160			PrintError => 0,
161			} ) ) {
162			$ok = Tangram::Relational->deploy($self->{schema}, $dbh );
163			$dbh->disconnect();
164			}
165			return $ok;
166			}
167
168			sub retreatSchema {
169			print "retreat\n";
170			my $self = shift;
171			#my $dsn = $self->{locator}->{dbi}->{dsn};
172			my $dsn = $self->{dbi}->{dsn};
173			my $ok;
174			if ( my $dbh = DBI->connect($dsn, '', '', {
175			PrintError => 0,
176			} ) ) {
177			$ok = Tangram::Relational->retreat($self->{schema}, $dbh );
178			$dbh->disconnect();
179			}
180			return $ok;
181	cvsjoko	1.1	}
182
183			1;
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