ent/doc: O2M same type example

Reviewed By: alexsn

Differential Revision: D17050185

fbshipit-source-id: ef12cc82ab9bf155713faf94129fd5fe503664e4

examples/o2mrecur/ent/node_delete.go

@@ -0,0 +1,61 @@
+// Code generated (@generated) by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+
+	"github.com/facebookincubator/ent/examples/o2mrecur/ent/node"
+	"github.com/facebookincubator/ent/examples/o2mrecur/ent/predicate"
+
+	"github.com/facebookincubator/ent/dialect/sql"
+)
+
+// NodeDelete is the builder for deleting a Node entity.
+type NodeDelete struct {
+	config
+	predicates []predicate.Node
+}
+
+// Where adds a new predicate for the builder.
+func (nd *NodeDelete) Where(ps ...predicate.Node) *NodeDelete {
+	nd.predicates = append(nd.predicates, ps...)
+	return nd
+}
+
+// Exec executes the deletion query.
+func (nd *NodeDelete) Exec(ctx context.Context) error {
+	return nd.sqlExec(ctx)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (nd *NodeDelete) ExecX(ctx context.Context) {
+	if err := nd.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (nd *NodeDelete) sqlExec(ctx context.Context) error {
+	var res sql.Result
+	selector := sql.Select().From(sql.Table(node.Table))
+	for _, p := range nd.predicates {
+		p(selector)
+	}
+	query, args := sql.Delete(node.Table).FromSelect(selector).Query()
+	return nd.driver.Exec(ctx, query, args, &res)
+}
+
+// NodeDeleteOne is the builder for deleting a single Node entity.
+type NodeDeleteOne struct {
+	nd *NodeDelete
+}
+
+// Exec executes the deletion query.
+func (ndo *NodeDeleteOne) Exec(ctx context.Context) error {
+	return ndo.nd.Exec(ctx)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (ndo *NodeDeleteOne) ExecX(ctx context.Context) {
+	ndo.nd.ExecX(ctx)
+}