Module: NEU::MODS::Selectors

Includes:
Projection::NameDisplay, Projection::Support
Included in:
Document, Projection::Access, Projection::Names, Projection::Subjects, Projection::Titles
Defined in:
lib/neu/mods/selectors.rb

Overview

Node LOCATION, returning live nodes that serve both the read path and Cerberus's MODSMerge edits. A selector must never return a node the projection would not read from. See docs/editing.md.

Constant Summary

Constants included from Projection::Support

Projection::Support::AUTHORITY_ATTRIBUTES

Instance Method Summary collapse

Instance Method Details

#abstract_nodes ⇒ Object

All top-level elements (MODS permits several).



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# File 'lib/neu/mods/selectors.rb', line 32

def abstract_nodes
  doc.xpath("/mods:mods/mods:abstract", NAMESPACE)
end

#editable_creator_nodes(type) ⇒ Object

The plain Creator nodes of one @type, for replace-on-save.



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# File 'lib/neu/mods/selectors.rb', line 42

def editable_creator_nodes(type)
  doc.xpath("/mods:mods/mods:name[@type='#{type}']", NAMESPACE)
     .select { |n| editable_creator_name?(n) }
end

#keyword_subjects ⇒ Object

The attribute-free, topic-only subjects the simple form manages.



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# File 'lib/neu/mods/selectors.rb', line 37

def keyword_subjects
  doc.xpath("/mods:mods/mods:subject", NAMESPACE).select { |s| keyword_subject?(s) }
end

#primary_title_info ⇒ Object

Top-level primary titleInfo, falling back to the first top-level one that is not a variant; nil if every titleInfo is a variant. Never fall back to a variant: MODSMerge overwrites the node this returns. See docs/titles.md.



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# File 'lib/neu/mods/selectors.rb', line 21

def primary_title_info
  doc.at_xpath("/mods:mods/mods:titleInfo[@usage='primary']", NAMESPACE) ||
    doc.xpath("/mods:mods/mods:titleInfo", NAMESPACE).reject { |ti| variant_title?(ti) }.first
end

#variant_title?(node) ⇒ Boolean

Any @type marks a variant: MODS enumerates four types, all variants.

Returns:

  • (Boolean) 


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# File 'lib/neu/mods/selectors.rb', line 27

def variant_title?(node)
  !attr_value(node, "type").nil?
end