Dapper Plus Then Bulk Update

Description

The Dapper Plus ThenBulkDelete method allows to DELETE entities in a database table or a view using a lambda expression.

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

Then Bulk Delete with "One to One" Relation

The Dapper Plus ThenBulkDelete method allows deleting a related item with a "One to One" relation.

//Delete an order and then the related invoice.
connection.BulkDelete(orderTransaction)
          .ThenBulkDelete(transaction => transaction.order)
          .ThenBulkDelete(order => order.Invoice);

//Delete a list of orders and then the related invoice to every order.
connection.BulkDelete(orderTransaction)
          .ThenBulkDelete(transaction => transaction.orders)
          .ThenBulkDelete(order => order.Invoice);

Then Bulk Delete with "One to Many" Relation

The Dapper Plus ThenBulkDelete method allows deleting related items with a "One to Many" relation.

//Delete an order and then all related items.
connection.BulkDelete(orderTransaction)
          .ThenBulkDelete(transaction => transaction.order)
          .ThenBulkDelete(order => order.Items);

//Delete a list of orders and then all related items to every order.
connection.BulkDelete(orderTransaction)
          .ThenBulkDelete(transaction => transaction.orders);
          .ThenBulkDelete(order => order.Items);

Then Bulk Delete Chaining

The Dapper Plus ThenBulkDelete method allows chaining multiple bulk action methods.

//Delete an order and then all related items. Delete an invoice and then all related items.
connection.BulkDelete(orderTransaction)
          .ThenBulkDelete(transaction => transaction.order)
          .ThenBulkDelete(order => order.Items)
          .BulkDelete(invoiceTransaction)
          .ThenBulkDelete(transaction => transaction.invoice)
          .ThenBulkDelete(invoice => invoice.Items);

//Delete a list of orders and then all related items to every order. Delete a list of invoices and 
//then all related items to every invoice.
connection.BulkDelete(orderTransaction)
          .ThenBulkDelete(transaction => transaction.orders)
          .ThenBulkDelete(order => order.Items)
          .BulkDelete(invoiceTransaction)
          .ThenBulkDelete(transaction => transaction.invoices)
          .ThenBulkDelete(invoice => invoice.Items);
Last updated: 2023-03-02
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