Bio::Annotation::AnnotationFactory - Instantiates a new Bio::AnnotationI (or derived class) through a factory


    use Bio::Annotation::AnnotationFactory;
    my $factory = Bio::Annotation::AnnotationFactory->new(
                    -type => 'Bio::Annotation::SimpleValue');
    my $ann = $factory->create_object(-value => 'peroxisome',
                                      -tagname => 'cellular component');


This object will build Bio::AnnotationI objects generically.


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rather than to the module maintainer directly. Many experienced and reponsive experts will be able look at the problem and quickly address it. Please include a thorough description of the problem with code and data examples if at all possible.

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AUTHOR - Hilmar Lapp

Email hlapp at


This is mostly copy-and-paste with subsequent adaptation from Bio::Seq::SeqFactory by Jason Stajich. Most credits should in fact go to him.


The rest of the documentation details each of the object methods. Internal methods are usually preceded with a _


 Title   : new
 Usage   : my $obj = Bio::Annotation::AnnotationFactory->new();
 Function: Builds a new Bio::Annotation::AnnotationFactory object 
 Returns : Bio::Annotation::AnnotationFactory
 Args    : -type => string, name of a L<Bio::AnnotationI> derived class.

If type is not set the module guesses it based on arguments passed to method create_object.


 Title   : create_object
 Usage   : my $seq = $factory->create_object(<named parameters>);
 Function: Instantiates new Bio::AnnotationI (or one of its child classes)

           This object allows us to genericize the instantiation of
           cluster objects.

 Returns : L<Bio::AnnotationI> compliant object
           The return type is configurable using new(-type =>"...").
 Args    : initialization parameters specific to the type of annotation
           object we want.


 Title   : type
 Usage   : $obj->type($newval)
 Function: Get/set the type of L<Bio::AnnotationI> object to be created.

           This may be changed at any time during the lifetime of this

 Returns : value of type
 Args    : newvalue (optional)


 Title   : _guess_type
 Usage   :
 Function: Guesses the right type of L<Bio::AnnotationI> implementation
           based on initialization parameters for the prospective
 Example :
 Returns : the type (a string, the module name)
 Args    : initialization parameters to be passed to the prospective
           cluster object