Class: Archsight::Query::Query

Inherits:
Object
  • Object
show all
Defined in:
lib/archsight/query.rb

Overview

Main Query class - entry point for parsing and evaluating queries

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(source) ⇒ Query

Returns a new instance of Query.



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# File 'lib/archsight/query.rb', line 19

def initialize(source)
  @source = source
  @ast = parse(source)
end

Instance Attribute Details

#ast ⇒ Object (readonly)

Returns the value of attribute ast.



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# File 'lib/archsight/query.rb', line 17

def ast
  @ast
end

#source ⇒ Object (readonly)

Returns the value of attribute source.



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# File 'lib/archsight/query.rb', line 17

def source
  @source
end

Instance Method Details

#filter(database) ⇒ Object

Filter all instances from database matching this query



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# File 'lib/archsight/query.rb', line 31

def filter(database)
  evaluator = Evaluator.new(database)
  evaluator.filter(@ast)
end

#inspect ⇒ Object 



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# File 'lib/archsight/query.rb', line 46

def inspect
  "#<Query source=#{@source.inspect} kind_filter=#{kind_filter.inspect}>"
end

#kind_filter ⇒ Object

Return the kind filter if present (for optimization)



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# File 'lib/archsight/query.rb', line 37

def kind_filter
  @ast.kind_filter
end

#matches?(instance, database:) ⇒ Boolean

Check if a single instance matches this query

Returns:

  • (Boolean) 


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# File 'lib/archsight/query.rb', line 25

def matches?(instance, database:)
  evaluator = Evaluator.new(database)
  evaluator.matches?(@ast, instance)
end

#to_s ⇒ Object

Pretty print for debugging



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# File 'lib/archsight/query.rb', line 42

def to_s
  "Query(#{@source})"
end