Bio::Factory::ObjectBuUserrContributed Perl DocBio::Factory::ObjectBuilderI(3)NAMEBio::Factory::ObjectBuilderI - Interface for an object builder
SYNOPSIS
Give standard usage here
DESCRIPTION
An object builder is different from an object factory in that it
accumulates information for the object and finally, or constantly,
depending on the implementation, builds the object. It also allows for
implementations that can tell the information feed in which kind of
information the builder is interested in which not. In addition, the
implementation may choose to filter, transform, or completely ignore
certain content it is fed for certain slots.
Implementations will hence be mostly used by stream-based parsers to
parse only desired content, and/or skip over undesired entries.
FEEDBACK
Mailing Lists
User feedback is an integral part of the evolution of this and other
Bioperl modules. Send your comments and suggestions preferably to the
Bioperl mailing list. Your participation is much appreciated.
bioperl-l@bioperl.org - General discussion
http://bioperl.org/wiki/Mailing_lists - About the mailing lists
Support
Please direct usage questions or support issues to the mailing list:
bioperl-l@bioperl.org
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.
Reporting Bugs
Report bugs to the Bioperl bug tracking system to help us keep track of
the bugs and their resolution. Bug reports can be submitted via the
web:
http://bugzilla.open-bio.org/
AUTHOR - Hilmar Lapp
Email hlapp at gmx.net
APPENDIX
The rest of the documentation details each of the object methods.
Internal methods are usually preceded with a _
want_slot
Title : want_slot
Usage :
Function: Whether or not the object builder wants to populate the
specified slot of the object to be built.
The slot can be specified either as the name of the
respective method, or the initialization parameter that
would be otherwise passed to new() of the object to be
built.
Example :
Returns : TRUE if the object builder wants to populate the slot, and
FALSE otherwise.
Args : the name of the slot (a string)
add_slot_value
Title : add_slot_value
Usage :
Function: Adds one or more values to the specified slot of the object
to be built.
Naming the slot is the same as for want_slot().
The object builder may further filter the content to be
set, or even completely ignore the request.
If this method reports failure, the caller should not add
more values to the same slot. In addition, the caller may
find it appropriate to abandon the object being built
altogether.
Example :
Returns : TRUE on success, and FALSE otherwise
Args : the name of the slot (a string)
parameters determining the value to be set
want_object
Title : want_object
Usage :
Function: Whether or not the object builder is still interested in
continuing with the object being built.
If this method returns FALSE, the caller should not add any
more values to slots, or otherwise risks that the builder
throws an exception. In addition, make_object() is likely
to return undef after this method returned FALSE.
Example :
Returns : TRUE if the object builder wants to continue building
the present object, and FALSE otherwise.
Args : none
make_object
Title : make_object
Usage :
Function: Get the built object.
This method is allowed to return undef if no value has ever
been added since the last call to make_object(), or if
want_object() returned FALSE (or would have returned FALSE)
before calling this method.
For an implementation that allows consecutive building of
objects, a caller must call this method once, and only
once, between subsequent objects to be built. I.e., a call
to make_object implies 'end_object.'
Example :
Returns : the object that was built
Args : none
perl v5.14.1 2011-07-22 Bio::Factory::ObjectBuilderI(3)
