entities_complex.php

<?php

/** @Entity */
class Product {
  /** @Column */
	protected $code;
	/** @OneToMany(ProductPricemap) */
	protected $prices;
}

class PriceList {
	/** @Column */
	protected $name;
	/** @Column(type="currency") */
	protected $currency;
}

class ProductPrice_Map {
	/** @ManyToOne(Product) */
	protected $product;

	/** @ManyToOne(PriceList) */
	protected $priceList;

	/** @Column(type="price", currencyIn="priceList"[, currencyProperty="currency"]) */
	protected $amount;

}

entities_simple.php

<?php

/** @Entity */
class Product {
  /** @Column */
	protected $code;
	/** @OneToMany(ProductPrice) */
	protected $prices;
}

class ProductPrice {
	/** @ManyToOne(Product) */
	protected $product;

	/** @Column(type="price") */
	protected $price;

}

tables_complex.yml

product:
	- code
price_list:
	- name
	- currency [char(3)]
product_price_map:
	- product_id (ref)
	- price_list_id (ref)
	- amount [decimal(10,2)]

tables_simple.yml

product:
	- code
product_price:
	- product_id (ref)
	- price_amount [decimal(10,2)]
	- price_currency [char(3)]