NAME

Bio::Phylo::Util::XMLWritable - Superclass for objects that stringify to xml

SYNOPSIS

 # no direct usage

DESCRIPTION

This is the superclass for all objects that can be serialized to NeXML (http://www.nexml.org).

METHODS

MUTATORS

set_namespaces()

 Type    : Mutator
 Title   : set_namespaces
 Usage   : $obj->set_namespaces( 'dwc' => 'http://www.namespaceTBD.org/darwin2' );
 Function: Adds one or more prefix/namespace pairs
 Returns : $self
 Args    : One or more prefix/namespace pairs, as even-sized list, 
           or as a hash reference, i.e.:
           $obj->set_namespaces( 'dwc' => 'http://www.namespaceTBD.org/darwin2' );
           or
           $obj->set_namespaces( { 'dwc' => 'http://www.namespaceTBD.org/darwin2' } );
 Notes   : This is a global for the XMLWritable class, so that in a recursive
                   to_xml call the outermost element contains the namespace definitions.
                   This method can also be called as a static class method, i.e.
                   Bio::Phylo::Util::XMLWritable->set_namespaces(
                   'dwc' => 'http://www.namespaceTBD.org/darwin2');

add_dictionary()

 Type    : Mutator
 Title   : add_dictionary
 Usage   : $obj->add_dictionary($dict);
 Function: Adds a dictionary attachment to the object
 Returns : $self
 Args    : Bio::Phylo::Dictionary

remove_dictionary()

 Type    : Mutator
 Title   : remove_dictionary
 Usage   : $obj->remove_dictionary($dict);
 Function: Removes a dictionary attachment from the object
 Returns : $self
 Args    : Bio::Phylo::Dictionary

set_identifiable()

By default, all XMLWritable objects are identifiable when serialized, i.e. they have a unique id attribute. However, in some cases a serialized object may not have an id attribute (governed by the nexml schema). For such objects, id generation can be explicitly disabled using this method. Typically, this is done internally - you will probably never use this method.

 Type    : Mutator
 Title   : set_identifiable
 Usage   : $obj->set_tag(0);
 Function: Enables/disables id generation
 Returns : $self
 Args    : BOOLEAN

set_tag()

This method is usually only used internally, to define or alter the name of the tag into which the object is serialized. For example, for a Bio::Phylo::Forest::Node object, this method would be called with the 'node' argument, so that the object is serialized into an xml element structure called <node/>

 Type    : Mutator
 Title   : set_tag
 Usage   : $obj->set_tag('node');
 Function: Sets the tag name
 Returns : $self
 Args    : A tag name (must be a valid xml element name)

set_attributes()

Assigns attributes for the element.

 Type    : Mutator
 Title   : set_attributes
 Usage   : $obj->set_attributes( 'foo' => 'bar' )
 Function: Sets the xml attributes for the object;
 Returns : $self
 Args    : key/value pairs or a hash ref

set_xml_id()

This method is usually only used internally, to store the xml id of an object as it is parsed out of a nexml file - this is for the purpose of round-tripping nexml info sets.

 Type    : Mutator
 Title   : set_xml_id
 Usage   : $obj->set_xml_id('node345');
 Function: Sets the xml id
 Returns : $self
 Args    : An xml id (must be a valid xml NCName)

ACCESSORS

get_namespaces()

 Type    : Accessor
 Title   : get_namespaces
 Usage   : my %ns = %{ $obj->get_namespaces };
 Function: Retrieves the known namespaces
 Returns : A hash of prefix/namespace key/value pairs, or
           a single namespace if a single, optional
           prefix was provided as argument
 Args    : Optional - a namespace prefix

get_dictionaries()

Retrieves the dictionaries for the element.

 Type    : Accessor
 Title   : get_dictionaries
 Usage   : my @dicts = @{ $obj->get_dictionaries };
 Function: Retrieves the dictionaries for the element.
 Returns : An array ref of Bio::Phylo::Dictionary objects
 Args    : None.

get_tag()

Retrieves tag name for the element.

 Type    : Accessor
 Title   : get_tag
 Usage   : my $tag = $obj->get_tag;
 Function: Gets the xml tag name for the object;
 Returns : A tag name
 Args    : None.

get_xml_tag()

Retrieves tag string

 Type    : Accessor
 Title   : get_xml_tag
 Usage   : my $str = $obj->get_xml_tag;
 Function: Gets the xml tag for the object;
 Returns : A tag, i.e. pointy brackets
 Args    : Optional: a true value, to close an empty tag

get_attributes()

Retrieves attributes for the element.

 Type    : Accessor
 Title   : get_attributes
 Usage   : my %attrs = %{ $obj->get_attributes };
 Function: Gets the xml attributes for the object;
 Returns : A hash reference
 Args    : None.
 Comments: throws ObjectMismatch if no linked taxa object 
           can be found

get_xml_id()

Retrieves xml id for the element.

 Type    : Accessor
 Title   : get_xml_id
 Usage   : my $id = $obj->get_xml_id;
 Function: Gets the xml id for the object;
 Returns : An xml id
 Args    : None.

TESTS

is_identifiable()

By default, all XMLWritable objects are identifiable when serialized, i.e. they have a unique id attribute. However, in some cases a serialized object may not have an id attribute (governed by the nexml schema). This method indicates whether that is the case.

 Type    : Test
 Title   : is_identifiable
 Usage   : if ( $obj->is_identifiable ) { ... }
 Function: Indicates whether IDs are generated
 Returns : BOOLEAN
 Args    : NONE

SERIALIZER

to_xml()

Serializes invocant to XML.

 Type    : XML serializer
 Title   : to_xml
 Usage   : my $xml = $obj->to_xml;
 Function: Serializes $obj to xml
 Returns : An xml string
 Args    : None

SEE ALSO

Also see the manual: Bio::Phylo::Manual and http://rutgervos.blogspot.com.

REVISION

 $Id: XMLWritable.pm 804 2009-03-02 10:11:35Z rvos $