Dapper Plus – Introduction

Library Under Construction (Available at the end of April)

The Dapper Plus ThenBulkInsert method allow to INSERT entities in a database table or a view using a lambda expression.

The lambda expression use the entity or the IEnumerable<TEntity> from the last Bulk[Action] or ThenBulk[Action] chained method. (The action can be an insert, update, delete or merge operation).

Dapper – Then Bulk Insert with “One to One” Relation

The Dapper Plus ThenBulkInsert method allow inserting a related item with a “One to One” relation.

Example

Insert an order and then the related invoice.

connection.BulkInsert(orderTransaction)
          .ThenBulkInsert(transaction => transaction.order)
          .ThenBulkInsert(order => order.Invoice);

Insert a list of orders and then the related invoice to every order.

connection.BulkInsert(orderTransaction)
          .ThenBulkInsert(transaction => transaction.orders)
          .ThenBulkInsert(order => order.Invoice);

Dapper – Then Bulk Insert with “One to Many” Relation

The Dapper Plus ThenBulkInsert method allow inserting related items with a “One to Many” relation.

Example

Insert an order and then all related items.

connection.BulkInsert(orderTransaction)
          .ThenBulkInsert(transaction => transaction.order)
          .ThenBulkInsert(order => order.Items);

Insert a list of orders and then all related items to every order.

connection.BulkInsert(orderTransaction)
          .ThenBulkInsert(transaction => transaction.orders);
          .ThenBulkInsert(order => order.Items);

Dapper – Then Bulk Insert Chaining

The Dapper Plus ThenBulkInsert method allow chaining multiple bulk action methods.

Example

Insert an order and then all related items. Insert an invoice and then all related items.

connection.BulkInsert(orderTransaction)
          .ThenBulkInsert(transaction => transaction.order)
          .ThenBulkInsert(order => order.Items)
          .BulkInsert(invoiceTransaction)
          .ThenBulkInsert(transaction => transaction.invoice)
          .ThenBulkInsert(invoice => invoice.Items);

Insert a list of orders and then all related items to every order. Insert a list of invoices and then all related items to every invoice.

connection.BulkInsert(orderTransaction)
          .ThenBulkInsert(transaction => transaction.orders)
          .ThenBulkInsert(order => order.Items)
          .BulkInsert(invoiceTransaction)
          .ThenBulkInsert(transaction => transaction.invoices)
          .ThenBulkInsert(invoice => invoice.Items);