XTM::LTM XTM::LTM is a Topic Map Parsing of LTM instances.
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Perl module Map topic Map Parsing LTM instances

XTM::LTM Description

XTM::LTM is a Topic Map Parsing of LTM instances. XTM::LTM is a Topic Map Parsing of LTM instances.SYNOPSIS # reading a topic map description from a file/url $ltm = new XTM::LTM (file => 'mymap.ltm'); $tm = $ltm->sync_in();This package provides parsing functionality for LTM instances as described in the package documentation (doc directory) or athttp://www.ontopia.net/download/ltm.html Following clarifications and deviations relative to the LTM specification hold:comments:The parser does NOT recognizes nested comments. Any closest following */ sequence terminates a comment.scope:Only exactly ONE topic can be specified for a scope, but violations are currently not captured (open issue).role type:If a role is not specified, it will remain empty and not - as the specification mandates - will be substituted by the topic type.The reasons for this are that, first, a topic might have several types (which one to use?), secondly that there might be several topics in a member and thirdly, a role should generally NOT be the type of a member.This approach would somehow violate the idea of roles in associations, so this should not be encouraged by any tool.merging:Merging happens according to the XTM standard. This may affect the item 4 of section 3.2 according to which topics may be merged without error having different subject addresses.encoding:Only the encodings supported by the local Text::Iconv module are supported.BASEURI directive:Not (yet) implemented.TOPICMAP directive:Not implemented.This directive can give a name to the current topic map. The idea is that this name can be used inside the map to point to the map. An example would be a topic reifying the map.As the map is a resource (either explicit or via a map expression, XTM::Virtual), there seems to be no good reason to provide an additional name.MERGEMAP directive:The HyTime, ISO13250 format is not implemented as there is currently no driver in XTM::base. The strings determining the format are checked case-insensitive, so ASTMA and AsTMa are treated equally.The location of the map can be defined via any URI handled by LWP::Simple. If no scheme is provided file: will be assumed.The format string can be omitted. Then the parser will interpret the location string as tau expression (XTM::Virtual). Requirements: · Perl

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