JPA Insert Into Large ManyToMany - spring

Question

I have those 2 entities (stores and products) I have the products already and I want to assign it to the store, the problem is that a store could have thousands of products and to make an "insert into" I have to have the products in memory and then save the store with the product set. That makes me have a StackOverflowError and is super inefficient.
Is there a way to do something like this?
insert into product_store (product_id, store_id) VALUES (:productIds, :storeId)
Entities:
#Entity
#Table(name = "stores")
data class Store(#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
val id: Long = 0,
#Column
val name: String,
#Column
val street: String,
#Column
val streetNumber: String,
#Column
val postalCode: Int,
#Column
val city: String,
#Column
val state: String,
#Column
val latitude: Double,
#Column
val longitude: Double,
#ManyToMany(fetch = FetchType.LAZY)
#JoinTable(name = "product_store",
joinColumns = [JoinColumn(name = "store_id")],
inverseJoinColumns = [JoinColumn(name = "product_id")])
val products: Set<Product>
) : DateAudit()
Product Entity:
#Entity
#Table(name = "products")
data class Product(#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
val id: Long = 0,
#Column(nullable = false)
val codeBar: String,
#Column(nullable = false)
val name: String,
#Column(columnDefinition = "text")
val description: String,
#Column(columnDefinition = "text")
val ingredients: String?,
val picture: String,
#OneToMany(fetch = FetchType.EAGER, cascade = [CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH])
val nutriments: Set<Nutriment>,
#ManyToOne(fetch = FetchType.EAGER)
#JoinColumn(name = "brand_id")
val brand: Brand,
#ManyToMany(fetch = FetchType.EAGER, cascade = [CascadeType.MERGE])
#JoinTable(name = "product_category",
joinColumns = [JoinColumn(name = "product_id")],
inverseJoinColumns = [JoinColumn(name = "category_id")])
val categories: Set<Category>
) : DateAudit()

Answer 1

Fixed like this
#Modifying
#Query("INSERT INTO product_store (product_id, store_id) " +
"(SELECT p.id, s.id FROM products p, stores s WHERE p.market_id IN (:productMarketIds) AND s.id = :storeId)", nativeQuery = true)
fun saveProductsToStoreByProductMarketIds(storeId: Long, productMarketIds: Set<String>)