original_string: public function getDefaultClause($xmldb_field) {
  
          $defaultvalue = $this->getDefaultValue ($xmldb_field);
  
          if ($defaultvalue !== null) {
              return ' DEFAULT ' . $defaultvalue;
          } else {
              return null;
          }
      }
code: public function getDefaultClause($xmldb_field) {
  
          $defaultvalue = $this->getDefaultValue ($xmldb_field);
  
          if ($defaultvalue !== null) {
              return ' DEFAULT ' . $defaultvalue;
          } else {
              return null;
          }
      }
code_tokens: public function getDefaultClause ( $ xmldb_field ) { $ defaultvalue = $ this -> getDefaultValue ( $ xmldb_field ) ; if ( $ defaultvalue !== null ) { return ' DEFAULT ' . $ defaultvalue ; } else { return null ; } }
docstring: Given one xmldb_field, returns the correct "default clause" for the current configuration.
  
  @param xmldb_field $xmldb_field The xmldb_field.
  @return The SQL clause for generating the default value as in $xmldb_field.
docstring_tokens: Given one xmldb_field returns the correct default clause for the current configuration .