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revision 1.16, Tue Jun 28 23:51:06 2005 UTC revision 1.17, Wed Jul 27 20:00:00 2005 UTC
# Line 539  Line 539 
539    
540  =head3 CreateTables  =head3 CreateTables
541    
542  C<< $datanase->CreateTables(); >>  C<< $database->CreateTables(); >>
543    
544  This method creates the tables for the database from the metadata structure loaded by the  This method creates the tables for the database from the metadata structure loaded by the
545  constructor. It is expected this function will only be used on rare occasions, when the  constructor. It is expected this function will only be used on rare occasions, when the
# Line 959  Line 959 
959              $command .= " ORDER BY $orderClause";              $command .= " ORDER BY $orderClause";
960          }          }
961      }      }
962      Trace("SQL query: $command") if T(2);      Trace("SQL query: $command") if T(3);
963      Trace("PARMS: '" . (join "', '", @params) . "'") if (T(3) && (@params > 0));      Trace("PARMS: '" . (join "', '", @params) . "'") if (T(4) && (@params > 0));
964      my $sth = $dbh->prepare_command($command);      my $sth = $dbh->prepare_command($command);
965      # Execute it with the parameters bound in.      # Execute it with the parameters bound in.
966      $sth->execute(@params) || Confess("SELECT error" . $sth->errstr());      $sth->execute(@params) || Confess("SELECT error" . $sth->errstr());
# Line 2196  Line 2196 
2196          my @fromList = ();          my @fromList = ();
2197          my @toList = ();          my @toList = ();
2198          my @bothList = ();          my @bothList = ();
2199          Trace("Join table build for $entityName.") if T(3);          Trace("Join table build for $entityName.") if T(4);
2200          for my $relationshipName (keys %{$relationshipList}) {          for my $relationshipName (keys %{$relationshipList}) {
2201              my $relationship = $relationshipList->{$relationshipName};              my $relationship = $relationshipList->{$relationshipName};
2202              # Determine if this relationship has our entity in one of its link fields.              # Determine if this relationship has our entity in one of its link fields.
2203              my $fromEntity = $relationship->{from};              my $fromEntity = $relationship->{from};
2204              my $toEntity = $relationship->{to};              my $toEntity = $relationship->{to};
2205              Trace("Join check for relationship $relationshipName from $fromEntity to $toEntity.") if T(3);              Trace("Join check for relationship $relationshipName from $fromEntity to $toEntity.") if T(4);
2206              if ($fromEntity eq $entityName) {              if ($fromEntity eq $entityName) {
2207                  if ($toEntity eq $entityName) {                  if ($toEntity eq $entityName) {
2208                      # Here the relationship is recursive.                      # Here the relationship is recursive.
2209                      push @bothList, $relationshipName;                      push @bothList, $relationshipName;
2210                      Trace("Relationship $relationshipName put in both-list.") if T(3);                      Trace("Relationship $relationshipName put in both-list.") if T(4);
2211                  } else {                  } else {
2212                      # Here the relationship comes from the entity.                      # Here the relationship comes from the entity.
2213                      push @fromList, $relationshipName;                      push @fromList, $relationshipName;
2214                      Trace("Relationship $relationshipName put in from-list.") if T(3);                      Trace("Relationship $relationshipName put in from-list.") if T(4);
2215                  }                  }
2216              } elsif ($toEntity eq $entityName) {              } elsif ($toEntity eq $entityName) {
2217                  # Here the relationship goes to the entity.                  # Here the relationship goes to the entity.
2218                  push @toList, $relationshipName;                  push @toList, $relationshipName;
2219                  Trace("Relationship $relationshipName put in to-list.") if T(3);                  Trace("Relationship $relationshipName put in to-list.") if T(4);
2220              }              }
2221          }          }
2222          # Create the nonrecursive joins. Note that we build two hashes for running          # Create the nonrecursive joins. Note that we build two hashes for running
# Line 2262  Line 2262 
2262                  # relationship can only be ambiguous with another recursive relationship,                  # relationship can only be ambiguous with another recursive relationship,
2263                  # and the incoming relationship from the outer loop is never recursive.                  # and the incoming relationship from the outer loop is never recursive.
2264                  for my $otherName (@bothList) {                  for my $otherName (@bothList) {
2265                      Trace("Setting up relationship joins to recursive relationship $otherName with $relationshipName.") if T(3);                      Trace("Setting up relationship joins to recursive relationship $otherName with $relationshipName.") if T(4);
2266                      # Join from the left.                      # Join from the left.
2267                      $joinTable{"$relationshipName/$otherName"} =                      $joinTable{"$relationshipName/$otherName"} =
2268                          "$linkField = $otherName.from_link";                          "$linkField = $otherName.from_link";
# Line 2277  Line 2277 
2277          # rise to situations where we can't create the path we want; however, it is always          # rise to situations where we can't create the path we want; however, it is always
2278          # possible to get the same effect using multiple queries.          # possible to get the same effect using multiple queries.
2279          for my $relationshipName (@bothList) {          for my $relationshipName (@bothList) {
2280              Trace("Setting up entity joins to recursive relationship $relationshipName with $entityName.") if T(3);              Trace("Setting up entity joins to recursive relationship $relationshipName with $entityName.") if T(4);
2281              # Join to the entity from each direction.              # Join to the entity from each direction.
2282              $joinTable{"$entityName/$relationshipName"} =              $joinTable{"$entityName/$relationshipName"} =
2283                  "$entityName.id = $relationshipName.from_link";                  "$entityName.id = $relationshipName.from_link";

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