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revision 1.55, Sat Jun 24 23:49:10 2006 UTC revision 1.68, Tue Sep 19 00:12:21 2006 UTC
# Line 91  Line 91 
91    
92  32-bit signed integer  32-bit signed integer
93    
94    =item counter
95    
96    32-bit unsigned integer
97    
98  =item date  =item date
99    
100  64-bit unsigned integer, representing a PERL date/time value  64-bit unsigned integer, representing a PERL date/time value
# Line 318  Line 322 
322  # "maxLen" is the maximum permissible length of the incoming string data used to populate a field  # "maxLen" is the maximum permissible length of the incoming string data used to populate a field
323  # of the specified type. "dataGen" is PERL string that will be evaluated if no test data generation  # of the specified type. "dataGen" is PERL string that will be evaluated if no test data generation
324  # string is specified in the field definition. "avgLen" is the average byte length for estimating  # string is specified in the field definition. "avgLen" is the average byte length for estimating
325  # record sizes.  # record sizes. "sort" is the key modifier for the sort command.
326  my %TypeTable = ( char =>    { sqlType => 'CHAR(1)',            maxLen => 1,            avgLen =>   1, dataGen => "StringGen('A')" },  my %TypeTable = ( char =>    { sqlType => 'CHAR(1)',            maxLen => 1,            avgLen =>   1, sort => "",  dataGen => "StringGen('A')" },
327                    int =>     { sqlType => 'INTEGER',            maxLen => 20,           avgLen =>   4, dataGen => "IntGen(0, 99999999)" },                    int =>     { sqlType => 'INTEGER',            maxLen => 20,           avgLen =>   4, sort => "n", dataGen => "IntGen(0, 99999999)" },
328                    string =>  { sqlType => 'VARCHAR(255)',       maxLen => 255,          avgLen => 100, dataGen => "StringGen(IntGen(10,250))" },                    counter => { sqlType => 'INTEGER UNSIGNED',   maxLen => 20,           avgLen =>   4, sort => "n", dataGen => "IntGen(0, 99999999)" },
329                    text =>    { sqlType => 'TEXT',               maxLen => 1000000000,   avgLen => 500, dataGen => "StringGen(IntGen(80,1000))" },                    string =>  { sqlType => 'VARCHAR(255)',       maxLen => 255,          avgLen => 100, sort => "",  dataGen => "StringGen(IntGen(10,250))" },
330                    date =>    { sqlType => 'BIGINT',             maxLen => 80,           avgLen =>   8, dataGen => "DateGen(-7, 7, IntGen(0,1400))" },                    text =>    { sqlType => 'TEXT',               maxLen => 1000000000,   avgLen => 500, sort => "",  dataGen => "StringGen(IntGen(80,1000))" },
331                    float =>   { sqlType => 'DOUBLE PRECISION',   maxLen => 40,           avgLen =>   8, dataGen => "FloatGen(0.0, 100.0)" },                    date =>    { sqlType => 'BIGINT',             maxLen => 80,           avgLen =>   8, sort => "n", dataGen => "DateGen(-7, 7, IntGen(0,1400))" },
332                    boolean => { sqlType => 'SMALLINT',           maxLen => 1,            avgLen =>   1, dataGen => "IntGen(0, 1)" },                    float =>   { sqlType => 'DOUBLE PRECISION',   maxLen => 40,           avgLen =>   8, sort => "g", dataGen => "FloatGen(0.0, 100.0)" },
333                      boolean => { sqlType => 'SMALLINT',           maxLen => 1,            avgLen =>   1, sort => "n", dataGen => "IntGen(0, 1)" },
334                   'hash-string' =>                   'hash-string' =>
335                               { sqlType => 'VARCHAR(22)',        maxLen => 22,           avgLen =>  22, dataGen => "SringGen(22)" },                               { sqlType => 'VARCHAR(22)',        maxLen => 22,           avgLen =>  22, sort => "",  dataGen => "SringGen(22)" },
336                   'id-string' =>                   'id-string' =>
337                               { sqlType => 'VARCHAR(25)',        maxLen => 25,           avgLen =>  25, dataGen => "SringGen(22)" },                               { sqlType => 'VARCHAR(25)',        maxLen => 25,           avgLen =>  25, sort => "",  dataGen => "SringGen(22)" },
338                   'key-string' =>                   'key-string' =>
339                               { sqlType => 'VARCHAR(40)',        maxLen => 40,           avgLen =>  10, dataGen => "StringGen(IntGen(10,40))" },                               { sqlType => 'VARCHAR(40)',        maxLen => 40,           avgLen =>  10, sort => "",  dataGen => "StringGen(IntGen(10,40))" },
340                   'name-string' =>                   'name-string' =>
341                               { sqlType => 'VARCHAR(80)',        maxLen => 80,           avgLen =>  40, dataGen => "StringGen(IntGen(10,80))" },                               { sqlType => 'VARCHAR(80)',        maxLen => 80,           avgLen =>  40, sort => "",  dataGen => "StringGen(IntGen(10,80))" },
342                   'medium-string' =>                   'medium-string' =>
343                               { sqlType => 'VARCHAR(160)',       maxLen => 160,          avgLen =>  40, dataGen => "StringGen(IntGen(10,160))" },                               { sqlType => 'VARCHAR(160)',       maxLen => 160,          avgLen =>  40, sort => "",  dataGen => "StringGen(IntGen(10,160))" },
344                  );                  );
345    
346  # Table translating arities into natural language.  # Table translating arities into natural language.
# Line 1431  Line 1436 
1436  sub GetCount {  sub GetCount {
1437      # Get the parameters.      # Get the parameters.
1438      my ($self, $objectNames, $filter, $params) = @_;      my ($self, $objectNames, $filter, $params) = @_;
1439        # Insure the params argument is an array reference if the caller left it off.
1440        if (! defined($params)) {
1441            $params = [];
1442        }
1443      # Declare the return variable.      # Declare the return variable.
1444      my $retVal;      my $retVal;
1445      # Find out if we're counting an entity or a relationship.      # Find out if we're counting an entity or a relationship.
# Line 1623  Line 1632 
1632  The next statement inserts a C<HasProperty> relationship between feature C<fig|158879.1.peg.1> and  The next statement inserts a C<HasProperty> relationship between feature C<fig|158879.1.peg.1> and
1633  property C<4> with an evidence URL of C<http://seedu.uchicago.edu/query.cgi?article_id=142>.  property C<4> with an evidence URL of C<http://seedu.uchicago.edu/query.cgi?article_id=142>.
1634    
1635  C<< $erdb->InsertObject('HasProperty', { 'from-link' => 'fig|158879.1.peg.1', 'to-link' => 4, evidence = 'http://seedu.uchicago.edu/query.cgi?article_id=142'}); >>  C<< $erdb->InsertObject('HasProperty', { 'from-link' => 'fig|158879.1.peg.1', 'to-link' => 4, evidence => 'http://seedu.uchicago.edu/query.cgi?article_id=142'}); >>
1636    
1637  =over 4  =over 4
1638    
# Line 1833  Line 1842 
1842          }          }
1843      }      }
1844      # Analyze the table to improve performance.      # Analyze the table to improve performance.
1845        Trace("Analyzing and compacting $relationName.") if T(3);
1846      $dbh->vacuum_it($relationName);      $dbh->vacuum_it($relationName);
1847        Trace("$relationName load completed.") if T(3);
1848      # Return the statistics.      # Return the statistics.
1849      return $retVal;      return $retVal;
1850  }  }
# Line 1936  Line 1947 
1947    
1948  C<< my @values = $erdb->GetEntityValues($entityType, $ID, \@fields); >>  C<< my @values = $erdb->GetEntityValues($entityType, $ID, \@fields); >>
1949    
1950  Return a list of values from a specified entity instance.  Return a list of values from a specified entity instance. If the entity instance
1951    does not exist, an empty list is returned.
1952    
1953  =over 4  =over 4
1954    
# Line 3233  Line 3245 
3245    
3246  =head3 SortNeeded  =head3 SortNeeded
3247    
3248  C<< my $flag = $erdb->SortNeeded($relationName); >>  C<< my $parms = $erdb->SortNeeded($relationName); >>
3249    
3250    Return the pipe command for the sort that should be applied to the specified
3251    relation when creating the load file.
3252    
3253    For example, if the load file should be sorted ascending by the first
3254    field, this method would return
3255    
3256  Return TRUE if the specified relation should be sorted during loading to remove duplicate keys,      sort -k1 -t"\t"
3257  else FALSE.  
3258    If the first field is numeric, the method would return
3259    
3260        sort -k1n -t"\t"
3261    
3262    Unfortunately, due to a bug in the C<sort> command, we cannot eliminate duplicate
3263    keys using a sort.
3264    
3265  =over 4  =over 4
3266    
# Line 3244  Line 3268 
3268    
3269  Name of the relation to be examined.  Name of the relation to be examined.
3270    
3271  =item RETURN  =item
3272    
3273  Returns TRUE if the relation needs a sort, else FALSE.  Returns the sort command to use for sorting the relation, suitable for piping.
3274    
3275  =back  =back
3276    
# Line 3255  Line 3279 
3279  sub SortNeeded {  sub SortNeeded {
3280      # Get the parameters.      # Get the parameters.
3281      my ($self, $relationName) = @_;      my ($self, $relationName) = @_;
3282      # Declare the return variable.      # Declare a descriptor to hold the names of the key fields.
3283      my $retVal = 0;      my @keyNames = ();
3284      # Find out if the relation is a primary entity relation.      # Get the relation structure.
3285        my $relationData = $self->_FindRelation($relationName);
3286        # Find out if the relation is a primary entity relation,
3287        # a relationship relation, or a secondary entity relation.
3288      my $entityTable = $self->{_metaData}->{Entities};      my $entityTable = $self->{_metaData}->{Entities};
3289        my $relationshipTable = $self->{_metaData}->{Relationships};
3290      if (exists $entityTable->{$relationName}) {      if (exists $entityTable->{$relationName}) {
3291          my $keyType = $entityTable->{$relationName}->{keyType};          # Here we have a primary entity relation.
3292          Trace("Relation $relationName found in entity table with key type $keyType.") if T(3);          push @keyNames, "id";
3293          # If the key is not a hash string, we must do the sort.      } elsif (exists $relationshipTable->{$relationName}) {
3294          if ($keyType ne 'hash-string') {          # Here we have a relationship. We sort using the FROM index.
3295              $retVal = 1;          my $relationshipData = $relationshipTable->{$relationName};
3296            my $index = $relationData->{Indexes}->{"idx${relationName}From"};
3297            push @keyNames, @{$index->{IndexFields}};
3298        } else {
3299            # Here we have a secondary entity relation, so we have a sort on the ID field.
3300            push @keyNames, "id";
3301        }
3302        # Now we parse the key names into sort parameters. First, we prime the return
3303        # string.
3304        my $retVal = "sort -t\"\t\" ";
3305        # Get the relation's field list.
3306        my @fields = @{$relationData->{Fields}};
3307        # Loop through the keys.
3308        for my $keyData (@keyNames) {
3309            # Get the key and the ordering.
3310            my ($keyName, $ordering);
3311            if ($keyData =~ /^([^ ]+) DESC/) {
3312                ($keyName, $ordering) = ($1, "descending");
3313            } else {
3314                ($keyName, $ordering) = ($keyData, "ascending");
3315            }
3316            # Find the key's position and type.
3317            my $fieldSpec;
3318            for (my $i = 0; $i <= $#fields && ! $fieldSpec; $i++) {
3319                my $thisField = $fields[$i];
3320                if ($thisField->{name} eq $keyName) {
3321                    # Get the sort modifier for this field type. The modifier
3322                    # decides whether we're using a character, numeric, or
3323                    # floating-point sort.
3324                    my $modifier = $TypeTable{$thisField->{type}}->{sort};
3325                    # If the index is descending for this field, denote we want
3326                    # to reverse the sort order on this field.
3327                    if ($ordering eq 'descending') {
3328                        $modifier .= "r";
3329                    }
3330                    # Store the position and modifier into the field spec, which
3331                    # will stop the inner loop. Note that the field number is
3332                    # 1-based in the sort command, so we have to increment the
3333                    # index.
3334                    $fieldSpec = ($i + 1) . $modifier;
3335                }
3336          }          }
3337            # Add this field to the sort command.
3338            $retVal .= " -k$fieldSpec";
3339      }      }
3340      # Return the result.      # Return the result.
3341      return $retVal;      return $retVal;

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