=head1 NAME
XML::Compile::Schema::NameSpaces - Connect name-spaces from schemas
=head1 SYNOPSIS
# Used internally by XML::Compile::Schema
my $nss = XML::Compile::Schema::NameSpaces->new;
$nss->add($schema);
=head1 DESCRIPTION
This module keeps overview on a set of namespaces, collected from various
schema files. Per XML namespace, it will collect a list of fragments
which contain definitions for the namespace, each fragment comes from a
different source. These fragments are searched in reverse order when
an element or type is looked up (the last definitions overrule the
older definitions).
=head1 METHODS
=head2 Constructors
=over 4
=item $obj-E<gt>B<new>(OPTIONS)
=back
=head2 Accessors
=over 4
=item $obj-E<gt>B<add>(SCHEMA, [SCHEMAS])
Add L<XML::Compile::Schema::Instance|XML::Compile::Schema::Instance> objects to the internal
knowledge of this object.
=item $obj-E<gt>B<allSchemas>()
Returns a list of all known schema instances.
=item $obj-E<gt>B<doesExtend>(EXTTYPE, BASETYPE)
Returns true when EXTTYPE extends BASETYPE.
=item $obj-E<gt>B<find>(KIND, ADDRESS|(URI,NAME), OPTIONS)
Lookup the definition for the specified KIND of definition: the name
of a global element, global attribute, attributeGroup or model group.
The ADDRESS is constructed as C< {uri}name > or as seperate URI and NAME.
-Option --Default
include_used <true>
=over 2
=item include_used => BOOLEAN
=back
=item $obj-E<gt>B<findID>(ADDRESS|(URI,ID))
Lookup the definition for the specified id, which is constructed as
C< uri#id > or as seperate URI and ID.
=item $obj-E<gt>B<findSgMembers>(CLASS, TYPE)
Lookup the substitutionGroup alternatives for a specific element, which
is an TYPE (element full name) of form C< {uri}name > or as seperate
URI and NAME. Returned is an ARRAY of HASHes, each describing one type
(as returned by L<find()|XML::Compile::Schema::NameSpaces/"Accessors">)
=item $obj-E<gt>B<findTypeExtensions>(TYPE)
This method can be quite expensive, with large and nested schemas.
=item $obj-E<gt>B<list>()
Returns the list of name-space URIs defined.
=item $obj-E<gt>B<namespace>(URI)
Returns a list of L<XML::Compile::Schema::Instance|XML::Compile::Schema::Instance> objects which have
the URI as target namespace.
=item $obj-E<gt>B<printIndex>([FILEHANDLE], OPTIONS)
Show all definitions from all namespaces, for debugging purposes, by
default the selected. Additional OPTIONS are passed to
L<XML::Compile::Schema::Instance::printIndex()|XML::Compile::Schema::Instance/"Index">.
-Option --Default
include_used <true>
namespace <ALL>
=over 2
=item include_used => BOOLEAN
Show also the index from all the schema objects which are defined
to be usable as well; which were included via L<use()|XML::Compile::Schema::NameSpaces/"Accessors">.
=item namespace => URI|ARRAY-of-URI
Show only information about the indicate namespaces.
=back
example:
my $nss = $schema->namespaces;
$nss->printIndex(\*MYFILE);
$nss->printIndex(namespace => "my namespace");
# types defined in the wsdl schema
use XML::Compile::SOAP::Util qw/WSDL11/;
$nss->printIndex(\*STDERR, namespace => WSDL11);
=item $obj-E<gt>B<schemas>(URI)
We need the name-space; when it is lacking then import must help, but that
must be called explictly.
=item $obj-E<gt>B<use>(OBJECT)
Use any other L<XML::Compile::Schema|XML::Compile::Schema> extension as fallback, if the
L<find()|XML::Compile::Schema::NameSpaces/"Accessors"> does not succeed for the current object. Searches for
definitions do not recurse into the used object.
Returns the list of all used OBJECTS.
This method implements L<XML::Compile::Schema::useSchema()|XML::Compile::Schema/"Accessors">.
=back
=head1 SEE ALSO
This module is part of XML-Compile distribution version 1.29,
built on October 16, 2012. Website: F<http://perl.overmeer.net/xml-compile/>
Other distributions in this suite:
L<XML::Compile>,
L<XML::Compile::SOAP>,
L<XML::Compile::SOAP12>,
L<XML::Compile::SOAP::Daemon>,
L<XML::Compile::SOAP::WSA>,
L<XML::Compile::C14N>,
L<XML::Compile::WSS>,
L<XML::Compile::Tester>,
L<XML::Compile::Cache>,
L<XML::Compile::Dumper>,
L<XML::Compile::RPC>,
L<XML::Rewrite>,
L<XML::eXistDB>,
and
L<XML::LibXML::Simple>.
Please post questions or ideas to the mailinglist at
F<http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/xml-compile>
For live contact with other developers, visit the C<#xml-compile> channel
on C<irc.perl.org>.
=head1 LICENSE
Copyrights 2006-2012 by [Mark Overmeer]. For other contributors see ChangeLog.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
See F<http://www.perl.com/perl/misc/Artistic.html>