1 |
joko |
1.6 |
############################################ |
2 |
cvsjoko |
1.1 |
# |
3 |
joko |
1.7 |
# $Id: Tangram.pm,v 1.6 2002/11/29 05:02:30 joko Exp $ |
4 |
joko |
1.2 |
# |
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# $Log: Tangram.pm,v $ |
6 |
joko |
1.7 |
# Revision 1.6 2002/11/29 05:02:30 joko |
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# - sub getNewPerlObjectByPkgName (moved to libp.pm) |
8 |
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# + sub getMetaInfo |
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# - sub existsChildNode (moved to Abstract.pm) |
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# + sub getListUnfiltered |
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# + sub getListFiltered |
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# + sub createCursor |
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# + sub createSet |
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# + sub sendQuery |
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# |
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joko |
1.6 |
# Revision 1.5 2002/11/17 06:35:18 joko |
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# + locator metadata can now be reached via ->{locator} |
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# - getChildNodes is now wrapped via COREHANDLE |
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# |
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joko |
1.5 |
# Revision 1.4 2002/10/25 11:44:44 joko |
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# + sub _initSchema |
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# + sub existsChildNode |
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# + sub testIntegrity |
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# + sub rebuildDbAndSchema |
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# |
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joko |
1.4 |
# Revision 1.3 2002/10/17 03:56:55 joko |
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# + bugfix: trapped eval error |
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# |
29 |
joko |
1.3 |
# Revision 1.2 2002/10/17 00:10:05 joko |
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# + removed dependency from tsobj.pm, schema is now independent |
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# + sub getNewPerlObjectByPkgName |
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# + sub deploySchema |
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# + sub retreatSchema |
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# |
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joko |
1.2 |
# Revision 1.1 2002/10/10 03:44:07 cvsjoko |
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# + new |
37 |
cvsjoko |
1.1 |
# |
38 |
joko |
1.6 |
############################################ |
39 |
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40 |
cvsjoko |
1.1 |
|
41 |
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package Data::Storage::Handler::Tangram; |
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use strict; |
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use warnings; |
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use base ("Data::Storage::Handler::Abstract"); |
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use Tangram; |
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use Data::Dumper; |
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joko |
1.6 |
use libp qw( getNewPerlObjectByPkgName ); |
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use Data::Storage::Result::Tangram; |
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use Data::Compare::Struct qw( isEmpty ); |
53 |
cvsjoko |
1.1 |
|
54 |
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# get logger instance |
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my $logger = Log::Dispatch::Config->instance; |
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58 |
joko |
1.6 |
sub getMetaInfo { |
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my $self = shift; |
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$logger->debug( __PACKAGE__ . "->getMetaInfo()" ); |
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return { |
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'disconnectMethod' => 'disconnect', |
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}; |
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joko |
1.2 |
} |
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66 |
joko |
1.4 |
sub _initSchema { |
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my $self = shift; |
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$logger->debug( __PACKAGE__ . "->_initSchema()" ); |
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#if (!$self->{schema_tangram}) { |
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joko |
1.5 |
my $obj = getNewPerlObjectByPkgName($self->{locator}->{schema}, { EXPORT_OBJECTS => $self->{locator}->{classnames}, want_transactions => $self->{locator}->{want_transactions} } ); |
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joko |
1.4 |
$self->{schema_tangram} = $obj->getSchema(); |
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#} |
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if (!$self->{schema_tangram}) { |
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$logger->error( __PACKAGE__ . "->_initSchema: No Schema available for $self->{schema}" ); |
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return 0; |
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} |
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return 1; |
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} |
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80 |
cvsjoko |
1.1 |
sub connect { |
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my $self = shift; |
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my $dsn = shift; |
85 |
joko |
1.5 |
$dsn ||= $self->{locator}->{dbi}->{dsn}; |
86 |
cvsjoko |
1.1 |
|
87 |
joko |
1.2 |
$logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" ); |
88 |
cvsjoko |
1.1 |
|
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#my $storage = Tangram::Relational->connect( $schema, $dsn ); |
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#my $storage = Tangram::mysql->connect( $schema, $dsn ); |
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#$storage = Tangram::Relational->connect( Project->schema, $dsn ); |
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# if (!testDsn($dsn)) { |
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# croak("Database at \"$dsn\" is not available"); |
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# return; |
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# } |
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joko |
1.4 |
return unless $self->_initSchema(); |
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100 |
joko |
1.6 |
# create the main tangram storage object |
101 |
joko |
1.2 |
#$self->{COREHANDLE} = Tangram::Relational->connect( $schema, $dsn ); |
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$self->{COREHANDLE} = Tangram::Relational->connect( $self->{schema_tangram}, $dsn ); |
103 |
cvsjoko |
1.1 |
|
104 |
joko |
1.6 |
# some attempts for configuring the wrapped underlying dbi..... |
105 |
cvsjoko |
1.1 |
#$self->{STORAGEHANDLE_UNDERLYING} = $self->getUnderlyingStorage(); |
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#$self->{STORAGEHANDLE_UNDERLYING}->_configureCOREHANDLE(); |
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#$self->_configureUnderlyingStorage; |
108 |
joko |
1.6 |
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109 |
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# ..... encapsulation wins! |
110 |
cvsjoko |
1.1 |
$self->configureCOREHANDLE(); |
111 |
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112 |
joko |
1.5 |
$self->{locator}->{status}->{connected} = 1; |
113 |
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joko |
1.4 |
return 1; |
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116 |
cvsjoko |
1.1 |
} |
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sub getChildNodes { |
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my $self = shift; |
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my @nodes; |
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joko |
1.4 |
$logger->debug( __PACKAGE__ . "->getChildNodes()" ); |
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125 |
cvsjoko |
1.1 |
# create new DBI - Data::Storage - object from already connected DBI::db - handle inside the current COREHANDLE |
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#my $loc = new Data::Storage::Locator( type => "DBI", dbi => { db => $self->{COREHANDLE}->{db} }); |
127 |
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#my $loc = new Data::Storage::Locator( type => "DBI", COREHANDLE => $self->{COREHANDLE}->{db} ); |
128 |
joko |
1.6 |
|
129 |
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# todo: should we retrieve information from the schema here |
130 |
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# rather than poorly getting table names from underlying dbi? |
131 |
cvsjoko |
1.1 |
my $storage = $self->_getSubLayerHandle(); |
132 |
joko |
1.5 |
@nodes = @{$storage->getChildNodes()}; |
133 |
cvsjoko |
1.1 |
#$storage->_configureCOREHANDLE(); |
134 |
joko |
1.5 |
#print "getchildnodes\n"; |
135 |
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#print Dumper($self); |
136 |
cvsjoko |
1.1 |
#if (my $result = $self->sendCommand( 'SHOW TABLES;' ) ) { |
137 |
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138 |
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$storage->disconnect(); |
139 |
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140 |
joko |
1.4 |
$self->{meta}->{childnodes} = \@nodes; |
141 |
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142 |
cvsjoko |
1.1 |
return \@nodes; |
143 |
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144 |
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} |
145 |
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146 |
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147 |
joko |
1.4 |
sub testIntegrity { |
148 |
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149 |
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my $self = shift; |
150 |
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151 |
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$logger->debug( __PACKAGE__ . "->testIntegrity()" ); |
152 |
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153 |
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# 1st test: are there tables? |
154 |
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if (!$self->getChildNodes()) { |
155 |
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$logger->warning( __PACKAGE__ . "->testIntegrity no childnodes exist" ); |
156 |
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return; |
157 |
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} |
158 |
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159 |
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# 2nd test: is there a table named "Tangram"? |
160 |
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if (!$self->existsChildNode("Tangram")) { |
161 |
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$logger->warning( __PACKAGE__ . "->testIntegrity childnode \"Tangram\" doesn't exist" ); |
162 |
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return; |
163 |
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} |
164 |
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165 |
joko |
1.5 |
$self->{locator}->{status}->{integrity} = 1; |
166 |
joko |
1.4 |
return 1; |
167 |
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168 |
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} |
169 |
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170 |
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171 |
cvsjoko |
1.1 |
sub _getSubLayerHandle { |
172 |
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173 |
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my $self = shift; |
174 |
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175 |
joko |
1.4 |
$logger->debug( __PACKAGE__ . "->_getSubLayerHandle()" ); |
176 |
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177 |
cvsjoko |
1.1 |
#print Dumper($self); |
178 |
joko |
1.5 |
|
179 |
cvsjoko |
1.1 |
# hack, make more generic! |
180 |
joko |
1.4 |
if (!$self->{dataStorageLayer}) { |
181 |
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$logger->debug( __PACKAGE__ . "->_getSubLayerHandle() creating new dataStorageLayer" ); |
182 |
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#my $loc = Data::Storage::Locator->new( type => "DBI", dbi => $self->{dbi}, COREHANDLE => $self->{COREHANDLE}->{db} ); |
183 |
joko |
1.5 |
my $loc = Data::Storage::Locator->new( { type => "DBI", dbi => $self->{locator}->{dbi} } ); |
184 |
joko |
1.4 |
$self->{dataStorageLayer} = Data::Storage->new( $loc, { protected => 1 } ); |
185 |
cvsjoko |
1.1 |
#$self->{STORAGE_UNDER_THE_HOOD}->{STORAGEHANDLE}->_configureCOREHANDLE(); |
186 |
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#$self->{STORAGE_UNDER_THE_HOOD}->_configureCOREHANDLE(); |
187 |
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} |
188 |
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189 |
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#print Dumper($self->{STORAGE_UNDER_THE_HOOD}); |
190 |
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191 |
joko |
1.4 |
return $self->{dataStorageLayer}; |
192 |
cvsjoko |
1.1 |
|
193 |
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} |
194 |
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195 |
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sub _configureUnderlyingStorage { |
196 |
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197 |
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my $self = shift; |
198 |
joko |
1.4 |
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199 |
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$logger->debug( __PACKAGE__ . "->_configureUnderlyingStorage" ); |
200 |
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201 |
cvsjoko |
1.1 |
$self->_configureCOREHANDLE_DBI(); |
202 |
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return; |
203 |
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204 |
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foreach my $key (keys %{$self->{dbi}}) { |
205 |
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my $val = $self->{dbi}->{$key}; |
206 |
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print "entry: $key; $val", "\n"; |
207 |
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$self->{COREHANDLE}->{db}->{$key} = $val; |
208 |
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} |
209 |
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#print Dumper($self->{COREHANDLE}->{db}); |
210 |
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} |
211 |
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212 |
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213 |
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sub configureCOREHANDLE { |
214 |
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215 |
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my $self = shift; |
216 |
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217 |
joko |
1.4 |
$logger->debug( __PACKAGE__ . "->configureCOREHANDLE" ); |
218 |
cvsjoko |
1.1 |
|
219 |
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#my $subLayer = $self->_getSubLayerHandle(); |
220 |
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221 |
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# apply configured modifications |
222 |
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if (exists $self->{dbi}->{trace_level} && exists $self->{dbi}->{trace_file}) { |
223 |
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$self->{COREHANDLE}->{db}->trace($self->{dbi}->{trace_level}, $self->{dbi}->{trace_file}); |
224 |
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} |
225 |
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if (exists $self->{dbi}->{RaiseError}) { |
226 |
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$self->{COREHANDLE}->{db}->{RaiseError} = $self->{dbi}->{RaiseError}; |
227 |
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} |
228 |
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if (exists $self->{dbi}->{PrintError}) { |
229 |
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$self->{COREHANDLE}->{db}->{PrintError} = $self->{dbi}->{PrintError}; |
230 |
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} |
231 |
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if (exists $self->{dbi}->{HandleError}) { |
232 |
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$self->{COREHANDLE}->{db}->{HandleError} = $self->{dbi}->{HandleError}; |
233 |
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} |
234 |
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235 |
joko |
1.2 |
} |
236 |
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237 |
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sub deploySchema { |
238 |
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my $self = shift; |
239 |
joko |
1.5 |
my $args = shift; |
240 |
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241 |
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my $dsn = $self->{locator}->{dbi}->{dsn}; |
242 |
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#my $dsn = $self->{dbi}->{dsn}; |
243 |
joko |
1.4 |
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244 |
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$logger->debug( __PACKAGE__ . "->deploySchema( dsn $dsn )" ); |
245 |
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246 |
joko |
1.2 |
my $ok; |
247 |
joko |
1.5 |
# TODO: is this DBI->connect okay here like it is? regarding errors.....??? |
248 |
joko |
1.2 |
if ( my $dbh = DBI->connect($dsn, '', '', { |
249 |
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PrintError => 0, |
250 |
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} ) ) { |
251 |
joko |
1.4 |
|
252 |
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return unless $self->_initSchema(); |
253 |
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254 |
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$ok = Tangram::Relational->deploy($self->{schema_tangram}, $dbh ); |
255 |
joko |
1.2 |
$dbh->disconnect(); |
256 |
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} |
257 |
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return $ok; |
258 |
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} |
259 |
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260 |
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sub retreatSchema { |
261 |
joko |
1.4 |
|
262 |
joko |
1.2 |
my $self = shift; |
263 |
joko |
1.5 |
my $dsn = $self->{locator}->{dbi}->{dsn}; |
264 |
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#my $dsn = $self->{dbi}->{dsn}; |
265 |
joko |
1.4 |
|
266 |
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$logger->debug( __PACKAGE__ . "->retreatSchema( dsn $dsn )" ); |
267 |
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268 |
joko |
1.2 |
my $ok; |
269 |
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if ( my $dbh = DBI->connect($dsn, '', '', { |
270 |
joko |
1.4 |
#PrintError => 0, |
271 |
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#RaiseError => 0, |
272 |
joko |
1.2 |
} ) ) { |
273 |
joko |
1.4 |
|
274 |
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return unless $self->_initSchema(); |
275 |
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276 |
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#use Data::Dumper; print Dumper($self); |
277 |
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$self->{dataStorageLayer}->removeLogDispatchHandler("Tangram11"); |
278 |
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279 |
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$ok = Tangram::Relational->retreat($self->{schema_tangram}, $dbh ); |
280 |
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$ok = 2; # answer is "maybe" for now since Tangram::Relational->retreat doesn't seem to return a valid status |
281 |
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# idea: test this by checking for count of tables in database - |
282 |
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# problem with this: there may be some left not having been included to the schema |
283 |
joko |
1.2 |
$dbh->disconnect(); |
284 |
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} |
285 |
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return $ok; |
286 |
joko |
1.4 |
} |
287 |
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288 |
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sub rebuildDbAndSchema { |
289 |
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my $self = shift; |
290 |
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$logger->info( __PACKAGE__ . "->rebuildDbAndSchema()" ); |
291 |
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my @results; |
292 |
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293 |
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# sum up results (bool (0/1)) in array |
294 |
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push @results, $self->retreatSchema(); |
295 |
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push @results, $self->{dataStorageLayer}->dropDb(); |
296 |
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push @results, $self->{dataStorageLayer}->createDb(); |
297 |
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push @results, $self->deploySchema(); |
298 |
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299 |
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# scan array for "bad ones" |
300 |
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my $res = 1; |
301 |
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map { |
302 |
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$res = 0 if (!$_); |
303 |
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} @results; |
304 |
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305 |
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return $res; |
306 |
joko |
1.6 |
} |
307 |
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308 |
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sub getListUnfiltered { |
309 |
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my $self = shift; |
310 |
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my $nodename = shift; |
311 |
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my @results; |
312 |
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$logger->debug( __PACKAGE__ . "->getListUnfiltered( nodename => '" . $nodename . "' )" ); |
313 |
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# get set of objects from odbms by object name |
314 |
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my $object_set = $self->{COREHANDLE}->remote($nodename); |
315 |
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@results = $self->{COREHANDLE}->select($object_set); |
316 |
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return \@results; |
317 |
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} |
318 |
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319 |
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sub getListFiltered { |
320 |
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my $self = shift; |
321 |
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322 |
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# redirect to unfiltered mode |
323 |
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#return $self->getListUnfiltered(@_); |
324 |
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325 |
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my $nodename = shift; |
326 |
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my $filters = shift; |
327 |
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my @results; |
328 |
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$logger->debug( __PACKAGE__ . "->getListFiltered( nodename => '" . $nodename . "' )" ); |
329 |
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330 |
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#print Dumper($filters); |
331 |
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332 |
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my @tfilters; |
333 |
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334 |
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foreach my $filter (@$filters) { |
335 |
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336 |
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# get filter - TODO: for each filter |
337 |
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#my $filter = $filters->[0]; |
338 |
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339 |
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# build filter |
340 |
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my $lexpr = $filter->{key}; |
341 |
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#my $op = $filter->{op}; |
342 |
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my $op = '='; |
343 |
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my $rexpr = $filter->{val}; |
344 |
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my $tight = 100; |
345 |
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346 |
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# my $tfilter = Tangram::Filter->new( |
347 |
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# expr => "t1.$lexpr $op '$rexpr'", |
348 |
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# tight => $tight, |
349 |
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# objects => $objects, |
350 |
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# ); |
351 |
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352 |
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# HACK: build eval-string (sorry) to get filtered list - please give advice here |
353 |
|
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push @tfilters, '$remote->{' . $filter->{key} . '}' . " $filter->{op} '$filter->{val}'"; |
354 |
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355 |
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} |
356 |
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357 |
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my $tfilter = join(' & ', @tfilters); |
358 |
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359 |
|
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# get set of objects from odbms by object name |
360 |
|
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my $remote = $self->{COREHANDLE}->remote($nodename); |
361 |
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362 |
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# was: |
363 |
|
|
#@results = $self->{COREHANDLE}->select($object_set, $tfilter); |
364 |
|
|
|
365 |
|
|
# is: |
366 |
|
|
# HACK: build eval-string (sorry) to get filtered list - please give advice here |
367 |
|
|
my $evalstring = 'return $self->{COREHANDLE}->select($remote, ' . $tfilter . ');'; |
368 |
|
|
|
369 |
|
|
# get filtered list/set |
370 |
|
|
@results = eval($evalstring); |
371 |
|
|
die $@ if $@; |
372 |
|
|
|
373 |
|
|
return \@results; |
374 |
|
|
} |
375 |
|
|
|
376 |
|
|
sub createCursor { |
377 |
|
|
my $self = shift; |
378 |
|
|
my $node = shift; |
379 |
|
|
my $cmdHandle = $self->{COREHANDLE}->cursor($node); |
380 |
|
|
my $result = Data::Storage::Result::Tangram->new( RESULTHANDLE => $cmdHandle ); |
381 |
|
|
return $result; |
382 |
|
|
} |
383 |
|
|
|
384 |
|
|
sub createSet { |
385 |
|
|
my $self = shift; |
386 |
|
|
my @objects = @_; |
387 |
|
|
my $rh = Set::Object->new(); |
388 |
|
|
foreach (@objects) { |
389 |
|
|
#print Dumper($_); |
390 |
|
|
$rh->insert($_) if !isEmpty($_); |
391 |
|
|
} |
392 |
|
|
#print Dumper($rh->members()); |
393 |
|
|
my $result = Data::Storage::Result::Tangram->new( RESULTHANDLE => $rh ); |
394 |
|
|
return $result; |
395 |
|
|
} |
396 |
|
|
|
397 |
|
|
sub sendQuery { |
398 |
|
|
my $self = shift; |
399 |
|
|
my $query = shift; |
400 |
|
|
#my $sql = "SELECT cs FROM $self->{metainfo}->{$descent}->{node} WHERE $self->{metainfo}->{$descent}->{IdentProvider}->{arg}='$self->{entry}->{source}->{ident}';"; |
401 |
|
|
#my $result = $self->{metainfo}->{$descent}->{storage}->sendCommand($sql); |
402 |
|
|
|
403 |
|
|
#print Dumper($query); |
404 |
|
|
|
405 |
|
|
# HACK: special case: querying by id does not translate into a common tangram query |
406 |
|
|
# just load the object by given id(ent) |
407 |
|
|
if ($query->{criterias}->[0]->{key} eq 'id' && $query->{criterias}->[0]->{op} eq 'eq') { |
408 |
|
|
#print "LOAD!!!", "\n"; |
409 |
|
|
#exit; |
410 |
|
|
#return Set::Object->new( $self->{COREHANDLE}->load($query->{criterias}->[0]->{val}) ); |
411 |
|
|
my $ident = $query->{criterias}->[0]->{val}; |
412 |
|
|
#print "load obj", "\n"; |
413 |
|
|
#return $self->createSet() if $ident == 5; |
414 |
|
|
my $object = $self->{COREHANDLE}->load($ident); |
415 |
|
|
#print "get id", "\n"; |
416 |
|
|
my $oid = $self->{COREHANDLE}->id($object); |
417 |
|
|
return $self->createSet($object); |
418 |
|
|
#return $self->createSet( $self->{COREHANDLE}->load('300090018') ); |
419 |
|
|
} |
420 |
|
|
|
421 |
|
|
die("This should not be reached for now - redirect to \$self->getListFiltered() here!"); |
422 |
|
|
|
423 |
|
|
# TODO: do a common tangram query here |
424 |
|
|
|
425 |
|
|
my @crits; |
426 |
|
|
foreach (@{$query->{criterias}}) { |
427 |
|
|
my $op = ''; |
428 |
|
|
$op = '=' if lc $_->{op} eq 'eq'; |
429 |
|
|
push @crits, "$_->{key}$op'$_->{val}'"; |
430 |
|
|
} |
431 |
|
|
my $subnodes = {}; |
432 |
|
|
map { $subnodes->{$_}++ } @{$query->{subnodes}}; |
433 |
|
|
# HACK: this is hardcoded ;( expand possibilities! |
434 |
|
|
#my $crit = join(' AND ', @crits); |
435 |
|
|
#my $sql = hash2Sql($query->{node}, $subnodes, 'SELECT', $crit); |
436 |
|
|
#return $self->sendCommand($sql); |
437 |
|
|
#my $h = $self->{COREHANDLE}->remote($query->{node}); |
438 |
|
|
#my $res = $self->{COREHANDLE}->select($h, $h->{); |
439 |
|
|
return $self->createCursor($query->{node}); |
440 |
joko |
1.7 |
} |
441 |
|
|
|
442 |
|
|
sub eraseAll { |
443 |
|
|
my $self = shift; |
444 |
|
|
my $classname = shift; |
445 |
|
|
my $remote = $self->{storage}->remote($classname); |
446 |
|
|
my @objs = $self->{storage}->select($remote); |
447 |
|
|
$self->{COREHANDLE}->erase(@objs); |
448 |
cvsjoko |
1.1 |
} |
449 |
|
|
|
450 |
|
|
1; |