Class: ShEx::Algebra::Start

Inherits:
Operator::Unary show all
Includes:
ShapeExpression
Defined in:
vendor/bundler/ruby/3.3.0/bundler/gems/shex-f64040a493d0/lib/shex/algebra/start.rb

Constant Summary collapse

NAME = 
:start

Constants inherited from Operator::Unary

Operator::Unary::ARITY

Constants inherited from Operator

Operator::ARITY

Constants included from SPARQL::Algebra::Expression

SPARQL::Algebra::Expression::PATTERN_PARENTS

Constants included from RDF::Util::Logger

RDF::Util::Logger::IOWrapper

Instance Attribute Summary

Attributes inherited from Operator

#id, #logger, #operands, #options, #schema

Instance Method Summary collapse

Methods included from ShapeExpression

#validate_expressions!, #validate_self_references!

Methods inherited from Operator::Unary

#initialize

Methods inherited from Operator

#base_uri, #closed?, #dup, #each_descendant, #eql?, #expression, #expressions, #find, #focus, #focus=, from_shexj, #initialize, #inspect, #iri, iri, #json_type, #matched, #matched=, #message, #message=, #not_matched, #not_satisfied, #operand, #parent, #parent=, #references, #satisfied, #satisfied=, #satisfy, #semact?, #semantic_actions, #serialize_value, #status, #structure_error, #to_h, #to_json, #to_sxp, #to_sxp_bin, #triple_expression?, #unmatched, #unmatched=, #unsatisfied, #unsatisfied=, value, #value

Methods included from SPARQL::Algebra::Expression

cast, #constant?, #evaluate, extension, extension?, extensions, for, #invalid?, new, #node?, open, #optimize, #optimize!, parse, register_extension, #to_sxp_bin, #valid?, #variable?

Methods included from RDF::Util::Logger

#log_debug, #log_depth, #log_error, #log_fatal, #log_info, #log_recover, #log_recovering?, #log_statistics, #log_warn, #logger

Constructor Details

This class inherits a constructor from ShEx::Algebra::Operator::Unary

Instance Method Details

#satisfies?(focus, depth: 0) ⇒ Boolean, ShapeExpression

Parameters:

Returns:

  • (Boolean)
  • (ShapeExpression) —

    with matched and satisfied accessors for matched triples and sub-expressions

Raises:

  • (ShEx::NotMatched) —

    with expression accessor to access matched and unmatched statements along with satisfied and unsatisfied operations.



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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/shex-f64040a493d0/lib/shex/algebra/start.rb', line 11

def satisfies?(focus, depth: 0)
  status "", depth: depth
  matched_op = case expression
  when RDF::Resource
    schema.enter_shape(expression, focus) do |shape|
      if shape
        shape.satisfies?(focus, depth: depth + 1)
      else
        status "Satisfy as #{expression} was re-entered for #{focus}", depth: depth
        nil
      end
    end
  when ShapeExpression
    expression.satisfies?(focus, depth: depth + 1)
  end
  satisfy focus: focus, satisfied: matched_op, depth: depth
rescue ShEx::NotSatisfied => e
  not_satisfied e.message, focus: focus, unsatisfied: e.expression, depth: depth
  raise
end

#validate! ⇒ Operator

expressions must be ShapeExpressions or references to ShapeExpressions

Returns:

Raises:



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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/shex-f64040a493d0/lib/shex/algebra/start.rb', line 37

def validate!
  validate_expressions!
  super
end