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revision 1.51, Fri Jun 23 22:53:08 2006 UTC revision 1.69, Fri Sep 29 15:06:17 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 1586  Line 1595 
1595              my $entityData = $self->{_metaData}->{Entities}->{$entityName};              my $entityData = $self->{_metaData}->{Entities}->{$entityName};
1596              # Find the relation containing this field.              # Find the relation containing this field.
1597              my $fieldHash = $entityData->{Fields};              my $fieldHash = $entityData->{Fields};
1598              if (! exist $fieldHash->{$fieldTitle}) {              if (! exists $fieldHash->{$fieldTitle}) {
1599                  Confess("$fieldTitle not found in $entityName.");                  Confess("$fieldTitle not found in $entityName.");
1600              } else {              } else {
1601                  my $relation = $fieldHash->{$fieldTitle}->{relation};                  my $relation = $fieldHash->{$fieldTitle}->{relation};
# Line 1596  Line 1605 
1605                      # Now we can create an INSERT statement.                      # Now we can create an INSERT statement.
1606                      my $dbh = $self->{_dbh};                      my $dbh = $self->{_dbh};
1607                      my $fixedName = _FixName($fieldTitle);                      my $fixedName = _FixName($fieldTitle);
1608                      my $statement = "INSERT INTO $relation ($fixedName) VALUES(?, ?)";                      my $statement = "INSERT INTO $relation (id, $fixedName) VALUES(?, ?)";
1609                      # Execute the command.                      # Execute the command.
1610                      $dbh->SQL($statement, 0, $entityID, $value);                      $dbh->SQL($statement, 0, $entityID, $value);
1611                  }                  }
# 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 1932  Line 1943 
1943      return $retVal;      return $retVal;
1944  }  }
1945    
1946    =head3 GetChoices
1947    
1948    C<< my @values = $erdb->GetChoices($entityName, $fieldName); >>
1949    
1950    Return a list of all the values for the specified field that are represented in the
1951    specified entity.
1952    
1953    Note that if the field is not indexed, then this will be a very slow operation.
1954    
1955    =over 4
1956    
1957    =item entityName
1958    
1959    Name of an entity in the database.
1960    
1961    =item fieldName
1962    
1963    Name of a field belonging to the entity. This is a raw field name without
1964    the standard parenthesized notation used in most calls.
1965    
1966    =item RETURN
1967    
1968    Returns a list of the distinct values for the specified field in the database.
1969    
1970    =back
1971    
1972    =cut
1973    
1974    sub GetChoices {
1975        # Get the parameters.
1976        my ($self, $entityName, $fieldName) = @_;
1977        # Declare the return variable.
1978        my @retVal;
1979        # Get the entity data structure.
1980        my $entityData = $self->_GetStructure($entityName);
1981        # Get the field.
1982        my $fieldHash = $entityData->{Fields};
1983        if (! exists $fieldHash->{$fieldName}) {
1984            Confess("$fieldName not found in $entityName.");
1985        } else {
1986            # Get the name of the relation containing the field.
1987            my $relation = $fieldHash->{$fieldName}->{relation};
1988            # Fix up the field name.
1989            my $realName = _FixName($fieldName);
1990            # Get the database handle.
1991            my $dbh = $self->{_dbh};
1992            # Query the database.
1993            my $results = $dbh->SQL("SELECT DISTINCT $realName FROM $relation");
1994            # Clean the results. They are stored as a list of lists, and we just want the one list.
1995            @retVal = sort map { $_->[0] } @{$results};
1996        }
1997        # Return the result.
1998        return @retVal;
1999    }
2000    
2001  =head3 GetEntityValues  =head3 GetEntityValues
2002    
2003  C<< my @values = $erdb->GetEntityValues($entityType, $ID, \@fields); >>  C<< my @values = $erdb->GetEntityValues($entityType, $ID, \@fields); >>
2004    
2005  Return a list of values from a specified entity instance.  Return a list of values from a specified entity instance. If the entity instance
2006    does not exist, an empty list is returned.
2007    
2008  =over 4  =over 4
2009    
# Line 2064  Line 2131 
2131          push @retVal, \@rowData;          push @retVal, \@rowData;
2132          $fetched++;          $fetched++;
2133      }      }
2134        Trace("$fetched rows returned in GetAll.") if T(SQL => 4);
2135      # Return the resulting list.      # Return the resulting list.
2136      return @retVal;      return @retVal;
2137  }  }
2138    
2139    =head3 Exists
2140    
2141    C<< my $found = $sprout->Exists($entityName, $entityID); >>
2142    
2143    Return TRUE if an entity exists, else FALSE.
2144    
2145    =over 4
2146    
2147    =item entityName
2148    
2149    Name of the entity type (e.g. C<Feature>) relevant to the existence check.
2150    
2151    =item entityID
2152    
2153    ID of the entity instance whose existence is to be checked.
2154    
2155    =item RETURN
2156    
2157    Returns TRUE if the entity instance exists, else FALSE.
2158    
2159    =back
2160    
2161    =cut
2162    #: Return Type $;
2163    sub Exists {
2164        # Get the parameters.
2165        my ($self, $entityName, $entityID) = @_;
2166        # Check for the entity instance.
2167        Trace("Checking existence of $entityName with ID=$entityID.") if T(4);
2168        my $testInstance = $self->GetEntity($entityName, $entityID);
2169        # Return an existence indicator.
2170        my $retVal = ($testInstance ? 1 : 0);
2171        return $retVal;
2172    }
2173    
2174  =head3 EstimateRowSize  =head3 EstimateRowSize
2175    
2176  C<< my $rowSize = $erdb->EstimateRowSize($relName); >>  C<< my $rowSize = $erdb->EstimateRowSize($relName); >>
# Line 3197  Line 3300 
3300    
3301  =head3 SortNeeded  =head3 SortNeeded
3302    
3303  C<< my $flag = $erdb->SortNeeded($relationName); >>  C<< my $parms = $erdb->SortNeeded($relationName); >>
3304    
3305    Return the pipe command for the sort that should be applied to the specified
3306    relation when creating the load file.
3307    
3308    For example, if the load file should be sorted ascending by the first
3309    field, this method would return
3310    
3311        sort -k1 -t"\t"
3312    
3313  Return TRUE if the specified relation should be sorted during loading to remove duplicate keys,  If the first field is numeric, the method would return
3314  else FALSE.  
3315        sort -k1n -t"\t"
3316    
3317    Unfortunately, due to a bug in the C<sort> command, we cannot eliminate duplicate
3318    keys using a sort.
3319    
3320  =over 4  =over 4
3321    
# Line 3208  Line 3323 
3323    
3324  Name of the relation to be examined.  Name of the relation to be examined.
3325    
3326  =item RETURN  =item
3327    
3328  Returns TRUE if the relation needs a sort, else FALSE.  Returns the sort command to use for sorting the relation, suitable for piping.
3329    
3330  =back  =back
3331    
# Line 3219  Line 3334 
3334  sub SortNeeded {  sub SortNeeded {
3335      # Get the parameters.      # Get the parameters.
3336      my ($self, $relationName) = @_;      my ($self, $relationName) = @_;
3337      # Declare the return variable.      # Declare a descriptor to hold the names of the key fields.
3338      my $retVal = 0;      my @keyNames = ();
3339      # Find out if the relation is a primary entity relation.      # Get the relation structure.
3340        my $relationData = $self->_FindRelation($relationName);
3341        # Find out if the relation is a primary entity relation,
3342        # a relationship relation, or a secondary entity relation.
3343      my $entityTable = $self->{_metaData}->{Entities};      my $entityTable = $self->{_metaData}->{Entities};
3344        my $relationshipTable = $self->{_metaData}->{Relationships};
3345      if (exists $entityTable->{$relationName}) {      if (exists $entityTable->{$relationName}) {
3346          my $keyType = $entityTable->{$relationName}->{keyType};          # Here we have a primary entity relation.
3347          Trace("Relation $relationName found in entity table with key type $keyType.") if T(3);          push @keyNames, "id";
3348          # If the key is not a hash string, we must do the sort.      } elsif (exists $relationshipTable->{$relationName}) {
3349          if ($keyType ne 'hash-string') {          # Here we have a relationship. We sort using the FROM index.
3350              $retVal = 1;          my $relationshipData = $relationshipTable->{$relationName};
3351            my $index = $relationData->{Indexes}->{"idx${relationName}From"};
3352            push @keyNames, @{$index->{IndexFields}};
3353        } else {
3354            # Here we have a secondary entity relation, so we have a sort on the ID field.
3355            push @keyNames, "id";
3356        }
3357        # Now we parse the key names into sort parameters. First, we prime the return
3358        # string.
3359        my $retVal = "sort -t\"\t\" ";
3360        # Get the relation's field list.
3361        my @fields = @{$relationData->{Fields}};
3362        # Loop through the keys.
3363        for my $keyData (@keyNames) {
3364            # Get the key and the ordering.
3365            my ($keyName, $ordering);
3366            if ($keyData =~ /^([^ ]+) DESC/) {
3367                ($keyName, $ordering) = ($1, "descending");
3368            } else {
3369                ($keyName, $ordering) = ($keyData, "ascending");
3370            }
3371            # Find the key's position and type.
3372            my $fieldSpec;
3373            for (my $i = 0; $i <= $#fields && ! $fieldSpec; $i++) {
3374                my $thisField = $fields[$i];
3375                if ($thisField->{name} eq $keyName) {
3376                    # Get the sort modifier for this field type. The modifier
3377                    # decides whether we're using a character, numeric, or
3378                    # floating-point sort.
3379                    my $modifier = $TypeTable{$thisField->{type}}->{sort};
3380                    # If the index is descending for this field, denote we want
3381                    # to reverse the sort order on this field.
3382                    if ($ordering eq 'descending') {
3383                        $modifier .= "r";
3384                    }
3385                    # Store the position and modifier into the field spec, which
3386                    # will stop the inner loop. Note that the field number is
3387                    # 1-based in the sort command, so we have to increment the
3388                    # index.
3389                    $fieldSpec = ($i + 1) . $modifier;
3390                }
3391          }          }
3392            # Add this field to the sort command.
3393            $retVal .= " -k$fieldSpec";
3394      }      }
3395      # Return the result.      # Return the result.
3396      return $retVal;      return $retVal;
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