Class: Cyrel::Pattern::Path

Inherits:

Object

• Object
• Cyrel::Pattern::Path

Defined in:

lib/cyrel/pattern/path.rb

Overview

Represents a linear path pattern in a Cypher query, consisting of an alternating sequence of Node and Relationship objects.

Instance Attribute Summary

• #elements ⇒ Object readonly

  Returns the value of attribute elements.

Instance Method Summary

• #initialize(elements) ⇒ Path constructor

  A new instance of Path.

• #render(query) ⇒ String

  Renders the path pattern part of the Cypher query.

Constructor Details

#initialize(elements) ⇒ Path

Returns a new instance of Path.

Parameters:

• elements (Array<Cyrel::Pattern::Node, Cyrel::Pattern::Relationship>) —

  An array starting with a Node, followed by alternating Relationship and Node objects.

# File 'lib/cyrel/pattern/path.rb', line 12

def initialize(elements)
  validate_elements(elements)
  @elements = elements
end

Instance Attribute Details

#elements ⇒ Object (readonly)

Returns the value of attribute elements.

# File 'lib/cyrel/pattern/path.rb', line 8

def elements
  @elements
end

Instance Method Details

#render(query) ⇒ String

Renders the path pattern part of the Cypher query.

Parameters:

• query (Cyrel::Query) —

  The query object, used for parameter registration.

Returns:

• (String) —

  The Cypher string fragment for the path pattern.

# File 'lib/cyrel/pattern/path.rb', line 20

def render(query)
  @elements.map { |element| element.render(query) }.join
end