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revision 1.9, Thu Jan 19 09:28:33 2006 UTC revision 1.14, Wed Jun 21 03:12:51 2006 UTC
# Line 28  Line 28 
28    
29  =head3 new  =head3 new
30    
31  C<< my $erload = ERDBLoad->new($erdb, $relationName, $directory); >>  C<< my $erload = ERDBLoad->new($erdb, $relationName, $directory, $loadOnly, $ignore); >>
32    
33  Begin loading an ERDB relation.  Begin loading an ERDB relation.
34    
# Line 51  Line 51 
51  TRUE if the data is to be loaded from an existing file, FALSE if a file is  TRUE if the data is to be loaded from an existing file, FALSE if a file is
52  to be created.  to be created.
53    
54    =item ignore
55    
56    TRUE if the data is to be discarded. This is used to save time when only
57    a subset of the tables need to be loaded: the data for the ignored tables
58    is simply discarded.
59    
60  =back  =back
61    
62  =cut  =cut
63    
64  sub new {  sub new {
65      # Get the parameters.      # Get the parameters.
66      my ($class, $erdb, $relationName, $directory, $loadOnly) = @_;      my ($class, $erdb, $relationName, $directory, $loadOnly, $ignore) = @_;
67      # Validate the directory name.      # Validate the directory name.
68      if (! -d $directory) {      if (! -d $directory) {
69          Confess("Load directory \"$directory\" not found.");          Confess("Load directory \"$directory\" not found.");
# Line 68  Line 74 
74      my $fileHandle;      my $fileHandle;
75      # Determine whether or not this is a primary relation.      # Determine whether or not this is a primary relation.
76      my $primary = ($erdb->_IsPrimary($relationName) ? 1 : 0);      my $primary = ($erdb->_IsPrimary($relationName) ? 1 : 0);
77      # Check to see if this is a load-only or a generate-and-load.      # Check to see if this is a load-only, ignore, or a generate-and-load.
78      if ($loadOnly) {      if ($ignore) {
79            Trace("Relation $relationName will be ignored.") if T(2);
80            $fileHandle = "";
81        } elsif ($loadOnly) {
82          Trace("Relation $relationName will be loaded from $fileName.") if T(2);          Trace("Relation $relationName will be loaded from $fileName.") if T(2);
83          $fileHandle = "";          $fileHandle = "";
84      } else {      } else {
85          # If this is a primary entity relation, sort the output to remove          # If this is a primary entity relation whose key is not a hash string, sort
86          # duplicate keys.          # the output to remove duplicate keys.
87          my $fileString = ($erdb->IsEntity($relationName) ?          my $fileString = ($erdb->SortNeeded($relationName) ?
88                              "| sort +0 -1 -u -t \"\t\" >$fileName" :                              "| sort +0 -1 -u -t \"\t\" >$fileName" :
89                              ">$fileName");                              ">$fileName");
90          # Open the output file and remember its handle.          # Open the output file and remember its handle.
# Line 91  Line 100 
100                    fileSize => 0,                    fileSize => 0,
101                    lineCount => 0,                    lineCount => 0,
102                    stats => Stats->new(),                    stats => Stats->new(),
103                    primary => $primary                    primary => $primary,
104                      ignore => ($ignore ? 1 : 0)
105                   };                   };
106      # Bless and return it.      # Bless and return it.
107      bless $retVal, $class;      bless $retVal, $class;
108      return $retVal;      return $retVal;
109  }  }
110    
111    =head3 Ignore
112    
113    C<< my $flag = $erload->Ignore; >>
114    
115    Return TRUE if we are ignoring this table, else FALSE.
116    
117    =cut
118    #: Return Type $;
119    sub Ignore {
120        # Get the parameters.
121        my ($self) = @_;
122        # Return the result.
123        return $self->{ignore};
124    }
125    
126  =head3 Put  =head3 Put
127    
128  C<< my  = $erload->Put($field1, $field2, ..., $fieldN); >>  C<< my  = $erload->Put($field1, $field2, ..., $fieldN); >>
# Line 120  Line 145 
145  sub Put {  sub Put {
146      # Get the ERDBLoad instance and the field list.      # Get the ERDBLoad instance and the field list.
147      my ($self, @rawFields) = @_;      my ($self, @rawFields) = @_;
148        # Only proceed if we're not ignoring.
149        if (! $self->{ignore}) {
150            # Convert the hash-string fields to their digested value.
151            $self->{dbh}->DigestFields($self->{relName}, \@rawFields);
152      # Insure the field values are okay.      # Insure the field values are okay.
153      my $truncates = $self->{dbh}->VerifyFields($self->{relName}, \@rawFields);      my $truncates = $self->{dbh}->VerifyFields($self->{relName}, \@rawFields);
154      # Run through the list of field values, escaping them.      # Run through the list of field values, escaping them.
# Line 143  Line 172 
172          $self->Add("truncated", $truncates);          $self->Add("truncated", $truncates);
173      }      }
174  }  }
175    }
176    
177  =head3 Add  =head3 Add
178    
# Line 179  Line 209 
209    
210  C<< my $stats = $erload->Finish(); >>  C<< my $stats = $erload->Finish(); >>
211    
212  Finish loading the table. This closes the load file and loads its contents into the database.  Finish loading the table. This closes the load file.
 It also creates the indexes if the DBMS uses post-indexing.  
213    
214  =over 4  =over 4
215    
# Line 196  Line 225 
225  sub Finish {  sub Finish {
226      # Get this object instance.      # Get this object instance.
227      my ($self) = @_;      my ($self) = @_;
228        if ($self->{fh}) {
229      # Close the load file.      # Close the load file.
230      close $self->{fh};      close $self->{fh};
231        }
232      # Return the statistics object.      # Return the statistics object.
233      return $self->{stats};      return $self->{stats};
234  }  }

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