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// Copyright 2019-present Facebook Inc. All rights reserved.
// This source code is licensed under the Apache 2.0 license found
// in the LICENSE file in the root directory of this source tree.
// Code generated by entc, DO NOT EDIT.
package ent
import (
"fmt"
"strings"
"github.com/facebook/ent/dialect/sql"
"github.com/facebook/ent/entc/integration/ent/node"
)
// Node is the model entity for the Node schema.
type Node struct {
config `json:"-"`
// ID of the ent.
ID int `json:"id,omitempty"`
// Value holds the value of the "value" field.
Value int `json:"value,omitempty"`
// Edges holds the relations/edges for other nodes in the graph.
// The values are being populated by the NodeQuery when eager-loading is set.
Edges NodeEdges `json:"edges"`
node_next *int
}
// NodeEdges holds the relations/edges for other nodes in the graph.
type NodeEdges struct {
// Prev holds the value of the prev edge.
Prev *Node `gqlgen:prev`
// Next holds the value of the next edge.
Next *Node `gqlgen:next`
// loadedTypes holds the information for reporting if a
// type was loaded (or requested) in eager-loading or not.
loadedTypes [2]bool
}
// PrevOrErr returns the Prev value or an error if the edge
// was not loaded in eager-loading, or loaded but was not found.
func (e NodeEdges) PrevOrErr() (*Node, error) {
if e.loadedTypes[0] {
if e.Prev == nil {
// The edge prev was loaded in eager-loading,
// but was not found.
return nil, &NotFoundError{label: node.Label}
}
return e.Prev, nil
}
return nil, &NotLoadedError{edge: "prev"}
}
// NextOrErr returns the Next value or an error if the edge
// was not loaded in eager-loading, or loaded but was not found.
func (e NodeEdges) NextOrErr() (*Node, error) {
if e.loadedTypes[1] {
if e.Next == nil {
// The edge next was loaded in eager-loading,
// but was not found.
return nil, &NotFoundError{label: node.Label}
}
return e.Next, nil
}
return nil, &NotLoadedError{edge: "next"}
}
// scanValues returns the types for scanning values from sql.Rows.
func (*Node) scanValues(columns []string) ([]interface{}, error) {
values := make([]interface{}, len(columns))
for i := range columns {
switch columns[i] {
case node.FieldID, node.FieldValue:
values[i] = &sql.NullInt64{}
case node.ForeignKeys[0]: // node_next
values[i] = &sql.NullInt64{}
default:
return nil, fmt.Errorf("unexpected column %q for type Node", columns[i])
}
}
return values, nil
}
// assignValues assigns the values that were returned from sql.Rows (after scanning)
// to the Node fields.
func (n *Node) assignValues(columns []string, values []interface{}) error {
if m, n := len(values), len(columns); m < n {
return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
}
for i := range columns {
switch columns[i] {
case node.FieldID:
value, ok := values[i].(*sql.NullInt64)
if !ok {
return fmt.Errorf("unexpected type %T for field id", value)
}
n.ID = int(value.Int64)
case node.FieldValue:
if value, ok := values[i].(*sql.NullInt64); !ok {
return fmt.Errorf("unexpected type %T for field value", values[i])
} else if value.Valid {
n.Value = int(value.Int64)
}
case node.ForeignKeys[0]:
if value, ok := values[i].(*sql.NullInt64); !ok {
return fmt.Errorf("unexpected type %T for edge-field node_next", value)
} else if value.Valid {
n.node_next = new(int)
*n.node_next = int(value.Int64)
}
}
}
return nil
}
// QueryPrev queries the "prev" edge of the Node entity.
func (n *Node) QueryPrev() *NodeQuery {
return (&NodeClient{config: n.config}).QueryPrev(n)
}
// QueryNext queries the "next" edge of the Node entity.
func (n *Node) QueryNext() *NodeQuery {
return (&NodeClient{config: n.config}).QueryNext(n)
}
// Update returns a builder for updating this Node.
// Note that you need to call Node.Unwrap() before calling this method if this Node
// was returned from a transaction, and the transaction was committed or rolled back.
func (n *Node) Update() *NodeUpdateOne {
return (&NodeClient{config: n.config}).UpdateOne(n)
}
// Unwrap unwraps the Node entity that was returned from a transaction after it was closed,
// so that all future queries will be executed through the driver which created the transaction.
func (n *Node) Unwrap() *Node {
tx, ok := n.config.driver.(*txDriver)
if !ok {
panic("ent: Node is not a transactional entity")
}
n.config.driver = tx.drv
return n
}
// String implements the fmt.Stringer.
func (n *Node) String() string {
var builder strings.Builder
builder.WriteString("Node(")
builder.WriteString(fmt.Sprintf("id=%v", n.ID))
builder.WriteString(", value=")
builder.WriteString(fmt.Sprintf("%v", n.Value))
builder.WriteByte(')')
return builder.String()
}
// Nodes is a parsable slice of Node.
type Nodes []*Node
func (n Nodes) config(cfg config) {
for _i := range n {
n[_i].config = cfg
}
}
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