DITA Briefing3

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An introduction to DITA processing: 

An introduction to DITA processing Exploring aspects of the processing model Title slide

Overview: 

Overview Design points for the processing model Levels of DITA processing Special DITA considerations Application considerations Processing implementations Note: examples include output generated using 'dita13' external toolkit.

Design points for the processing model: 

Design points for the processing model Separation of content from context, presentation, hence: Multiple applications Multiple outputs Emphasis on typing and semantics Role of specialization awareness in workflow components: Editors Processors

Levels of DITA processing– topics: 

Levels of DITA processing– topics Editor view Literal, like the HTML model Server-enhanced; client/server continuum Dynamically modify the outbound XML for links,data; partial build, instilling relationships from the repository. Built-out HTML/PDF Full map-based instantiation of relationships

Levels of DITA processing – maps: 

Levels of DITA processing – maps Selection of topics from a content pool for a deliverable Alternate maps for different delivery models (print vs user assistance) Aggregation Query- or filter-based views Print-on-demand (user-selected) views Navigator/topic sets Navref Instilling of relationships during static build versus dynamic transcoding

Special DITA considerations: 

Special DITA considerations Conref and xref resolution Specialization awareness; defaults and overrides Pushed navigation (related links from maps) Metadata inheritance Conditional processing (filtering/flagging) Index and term processing Localization – externalized strings Generalization and respecializations Normalization and denormalization For DTD-free rendering (like the bookmap intermediate stage)

Application considerations: 

Application considerations Preferred editor behaviors Limitations of name-based style associations CSS-like (source view, class-based selectors for style properties) XSLT-based (result view, class-based transforms) Content management XML source management (no particular file bias) Link management (aids to authors) Non-text resources (access to graphics, multimedia, etc.) Output behaviors Push-based views (typical for content) vs Pull-based views (for example, sorting of related links based on attributes)

Processing implementations: 

Processing implementations DITA toolkit today Envisioned: Open Source based transforms Commercial-off-the-shelf components Editors, CMS Transform suites Final form tools (such as FO composers, help compilers) Turnkey applications Integrated tools Supportive of particular tasks

DITA toolkit closeup: 

DITA toolkit closeup Goals: Share the design for community feedback Reference implementation Enable a user community and shared contribution Enable a drop-in implementation for vendors Open Source intent (supported public implementation)

DITA Toolkit, continued: 

DITA Toolkit, continued Features: DTDs and Schemas topic and core specializations: concept, task, reference XSLT-based, specialization-aware transforms Output transforms Utility transforms CSS stylesheets for presentation Sample content (/doc and /samples directories) Demo specializations Ant build demos

DITA Toolkit, continued: 

DITA Toolkit, continued Outputs: HTML Web HTML Help JavaHelp Eclipse Help PDF Other possibilities: Help systems (for example, QT library help) Word processing formats (round-trip vs single use considerations) XHTML variants (for example, HTML-Mobile profile) Other: troff, man, TeX, flat text, etc..

DITA Toolkit Demos: 

DITA Toolkit Demos Review a fully processed /out directory Live demo of eNote topic specialization: Specialized output (override XSLT provides views and behaviors) Default output (class-based support for archetype processors) Live demo of map-driven 'samples' tasks for web and PDF: Sequential processing vs aggregation XSL-FO rendering as an additional processor in the pipeline Live demo of bookmap specialization: Example of a specialized map Enables more book-like processing on the aggregate Candidate for TC consideration

Summary: 

Summary The DITA toolkit is a reference implementation of many of the design behaviors for DITA processing: Specialization awareness Multiple map-based views Multiple outputs DTDs and Schemas with specialization design patterns Next steps: Work on the bookmap specialization Identify any clarification needed for the model Need agreement on standard organization for use by vendors Movement toward Open Source maintenance

Further reading: 

Further reading DITA Toolkit, 'DITA-ant.xml' and 'DITA-tweaks.xml' 'V2-DITA Considerations for a DITA authoring/production system' news://news.software.ibm.com:119/bp6r67$7v08$1@news.boulder.ibm.com Discussion threads on processing pipeline models

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