One-to-one && One-to-many Object relationships (YAML configuration to auto-entity generation in Symfony2)

relationship.orm.yml

# one-to-one, bidirectional
Customer:
  oneToOne:
    cart:
      targetEntity: Cart
      mappedBy: customer
Cart:
  oneToOne:
    customer:
      targetEntity: Customer
      inversedBy: cart
      joinColumn:
        name: customer_id
        referencedColumnName: id
		
# one-to-many, bidirectional
Product:
  type: entity
  oneToMany:
    features:
      targetEntity: Feature
      mappedBy: product
Feature:
  type: entity
  manyToOne:
    product:
      targetEntity: Product
      inversedBy: features
      joinColumn:
        name: product_id
        referencedColumnName: id
		
# Reference: http://docs.doctrine-project.org/en/latest/reference/association-mapping.html