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revision 1.7, Thu Oct 13 14:53:03 2005 UTC revision 1.8, Fri Jan 13 06:59:28 2006 UTC
# Line 46  Line 46 
46    
47  Name of the directory to use for the load files, WITHOUT a trailing slash.  Name of the directory to use for the load files, WITHOUT a trailing slash.
48    
49  =item estimatedRows (optional)  =item loadOnly
50    
51  Estimated maximum number of table rows. If omitted, the table will be created in  TRUE if the data is to be loaded from an existing file, FALSE if a file is
52  a format that permits an essentially unlimited number of rows.  to be created.
53    
54  =back  =back
55    
# Line 57  Line 57 
57    
58  sub new {  sub new {
59      # Get the parameters.      # Get the parameters.
60      my ($class, $erdb, $relationName, $directory, $estimatedRows) = @_;      my ($class, $erdb, $relationName, $directory, $loadOnly) = @_;
61      # Validate the directory name.      # Validate the directory name.
62      if (! -d $directory) {      if (! -d $directory) {
63          Confess("Load directory \"$directory\" not found.");          Confess("Load directory \"$directory\" not found.");
64      }      }
65      # Determine the name for this relation's load file.      # Determine the name for this relation's load file.
66      my $fileName = "$directory/$relationName.dtx";      my $fileName = "$directory/$relationName.dtx";
67        # Declare the file handle variable.
68        my $fileHandle;
69        # Determine whether or not this is a primary relation.
70        my $primary = ($erdb->_IsPrimary($relationName) ? 1 : 0);
71        # Check to see if this is a load-only or a generate-and-load.
72        if ($loadOnly) {
73            Trace("Relation $relationName will be loaded from $fileName.") if T(2);
74            $fileHandle = "";
75        } else {
76      # If this is a primary entity relation, sort the output to remove      # If this is a primary entity relation, sort the output to remove
77      # duplicate keys.      # duplicate keys.
78      my $fileString = ($erdb->IsEntity($relationName) ?      my $fileString = ($erdb->IsEntity($relationName) ?
79                          "| sort +0 -1 -u -t \"\t\" >$fileName" :                          "| sort +0 -1 -u -t \"\t\" >$fileName" :
80                          ">$fileName");                          ">$fileName");
81      # Open the output file and remember its handle.      # Open the output file and remember its handle.
82      my $fileHandle = Open(undef, $fileString);          $fileHandle = Open(undef, $fileString);
83            Trace("Relation $relationName load file created with primary flag $primary.") if T(2);
84        }
85      # Create the $erload object.      # Create the $erload object.
86      my $retVal = {      my $retVal = {
87                    dbh => $erdb,                    dbh => $erdb,
# Line 80  Line 91 
91                    fileSize => 0,                    fileSize => 0,
92                    lineCount => 0,                    lineCount => 0,
93                    stats => Stats->new(),                    stats => Stats->new(),
94                    primary => ($erdb->_IsPrimary($relationName) ? 1 : 0),                    primary => $primary
95                   };                   };
     Trace("Relation $relationName load file created with primary flag " . $retVal->{primary} . ".")  
         if T(2);  
96      # Bless and return it.      # Bless and return it.
97      bless $retVal, $class;      bless $retVal, $class;
98      return $retVal;      return $retVal;
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