addClass

Adds a class and all its surclasses into this generator. Sets the default values of PERSIST hash is they miss.

generateReferenceMethods

Generates the references methods in the class from the reference hash of the class.

Let a reference called foo pointing to an Bar object in the persist hash. The class MUST have a foo attribute that is dedicated to a Bar object.

This method will implement a foo method for the class that fetch the perl object from the database on demand ( accessor behaviour) Or just set the Foo object and check it is for the right class and save it if its not.

method template: for a reference named 'foo' to a Bar object.

sub foo_O{ my ($self, $value ) = @_ ; if( $value ){ if( ! $value->isa('Bar')){ confess("Bad class") ;} $self->{'foo_Bar'} = $value ; my $dbid = $value->{'_dbid_'} ; if ( ! defined $dbid ){ confess("Object $value is not saved"); } $self->foo($dbid) return $value ; }

    # if foo unset, got to fetch it.
    my $dbid = $self->foo();
    
    # If no dbid is set, theres no object to fetch
    if( ! defined $dbid ) { return undef ;}
    # Is the object is allready fetch
        if( defined $self->{'foo_O'} ) { return $self->{'foo_O'} ; }
  
    # really got to fetch
    return $self->{'foo_O'} = Factory->instance()->fetchObject('Bar',$dbid);

}

setDefaults

Sets default values for missing values in PERSIST hash for a class.

Usage: my $class = .... ; # the persistent class name my $h = .... ; # The PERSIST HASH of the class $class;

    $sg->setDefault($class,$h);

deleteSchema

Delete all the tables from the schema.

updateSchema

Implements the schema into the database. If $override is true, call deleteSchema before.

usage:

    $sg->updateSchema([1]);