Class: Cyrel::Clause::CallSubquery

Inherits:
Base
  • Object
show all
Defined in:
lib/cyrel/clause/call_subquery.rb

Overview

Represents a CALL { subquery } clause.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(subquery) ⇒ CallSubquery

Returns a new instance of CallSubquery.

Parameters:

Raises:

  • (ArgumentError) 


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# File 'lib/cyrel/clause/call_subquery.rb', line 10

def initialize(subquery)
  super() # Call super for Base initialization
  raise ArgumentError, "Subquery must be a Cyrel::Query instance, got #{subquery.class}" unless subquery.is_a?(Cyrel::Query)

  @subquery = subquery
end

Instance Attribute Details

#subquery ⇒ Object (readonly)

Returns the value of attribute subquery.



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# File 'lib/cyrel/clause/call_subquery.rb', line 7

def subquery
  @subquery
end

Instance Method Details

#render(_outer_query) ⇒ String

Renders the CALL { subquery } clause. Note: Parameter merging between outer and inner queries needs careful handling. This basic implementation assumes parameters are managed separately or the outer query’s #merge! handles parameter transfer if the subquery was built and then passed in.

Parameters:

  • _outer_query (Cyrel::Query) —

    The outer query object (potentially needed for parameter context).

Returns:

  • (String) —

    The Cypher string fragment for the clause.



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# File 'lib/cyrel/clause/call_subquery.rb', line 24

def render(_outer_query)
  # We need the subquery's cypher string and parameters.
  # Parameters from the subquery need to be merged into the outer query.
  # This is complex. For now, let's assume parameters are handled externally
  # or the subquery doesn't introduce new parameters conflicting with the outer scope.
  # A more robust solution would involve the outer query managing all parameters.

  sub_cypher, _sub_params = @subquery.to_cypher

  indented_sub_cypher = sub_cypher.gsub(/^/, '  ') # Indent subquery
  "CALL {\n#{indented_sub_cypher}\n}" # Construct final string

  # Return final string
end