// 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 ent, DO NOT EDIT.

package metadata

import (
	"entgo.io/ent/dialect/sql"
	"entgo.io/ent/dialect/sql/sqlgraph"
)

const (
	// Label holds the string label denoting the metadata type in the database.
	Label = "metadata"
	// FieldID holds the string denoting the id field in the database.
	FieldID = "id"
	// FieldAge holds the string denoting the age field in the database.
	FieldAge = "age"
	// FieldParentID holds the string denoting the parent_id field in the database.
	FieldParentID = "parent_id"
	// EdgeUser holds the string denoting the user edge name in mutations.
	EdgeUser = "user"
	// EdgeChildren holds the string denoting the children edge name in mutations.
	EdgeChildren = "children"
	// EdgeParent holds the string denoting the parent edge name in mutations.
	EdgeParent = "parent"
	// Table holds the table name of the metadata in the database.
	Table = "metadata"
	// UserTable is the table that holds the user relation/edge.
	UserTable = "metadata"
	// UserInverseTable is the table name for the User entity.
	// It exists in this package in order to avoid circular dependency with the "user" package.
	UserInverseTable = "users"
	// UserColumn is the table column denoting the user relation/edge.
	UserColumn = "id"
	// ChildrenTable is the table that holds the children relation/edge.
	ChildrenTable = "metadata"
	// ChildrenColumn is the table column denoting the children relation/edge.
	ChildrenColumn = "parent_id"
	// ParentTable is the table that holds the parent relation/edge.
	ParentTable = "metadata"
	// ParentColumn is the table column denoting the parent relation/edge.
	ParentColumn = "parent_id"
)

// Columns holds all SQL columns for metadata fields.
var Columns = []string{
	FieldID,
	FieldAge,
	FieldParentID,
}

// ValidColumn reports if the column name is valid (part of the table columns).
func ValidColumn(column string) bool {
	for i := range Columns {
		if column == Columns[i] {
			return true
		}
	}
	return false
}

var (
	// DefaultAge holds the default value on creation for the "age" field.
	DefaultAge int
)

// OrderOption defines the ordering options for the Metadata queries.
type OrderOption func(*sql.Selector)

// ByID orders the results by the id field.
func ByID(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldID, opts...).ToFunc()
}

// ByAge orders the results by the age field.
func ByAge(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldAge, opts...).ToFunc()
}

// ByParentID orders the results by the parent_id field.
func ByParentID(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldParentID, opts...).ToFunc()
}

// ByUserField orders the results by user field.
func ByUserField(field string, opts ...sql.OrderTermOption) OrderOption {
	return func(s *sql.Selector) {
		sqlgraph.OrderByNeighborTerms(s, newUserStep(), sql.OrderByField(field, opts...))
	}
}

// ByChildrenCount orders the results by children count.
func ByChildrenCount(opts ...sql.OrderTermOption) OrderOption {
	return func(s *sql.Selector) {
		sqlgraph.OrderByNeighborsCount(s, newChildrenStep(), opts...)
	}
}

// ByChildren orders the results by children terms.
func ByChildren(term sql.OrderTerm, terms ...sql.OrderTerm) OrderOption {
	return func(s *sql.Selector) {
		sqlgraph.OrderByNeighborTerms(s, newChildrenStep(), append([]sql.OrderTerm{term}, terms...)...)
	}
}

// ByParentField orders the results by parent field.
func ByParentField(field string, opts ...sql.OrderTermOption) OrderOption {
	return func(s *sql.Selector) {
		sqlgraph.OrderByNeighborTerms(s, newParentStep(), sql.OrderByField(field, opts...))
	}
}
func newUserStep() *sqlgraph.Step {
	return sqlgraph.NewStep(
		sqlgraph.From(Table, FieldID),
		sqlgraph.To(UserInverseTable, FieldID),
		sqlgraph.Edge(sqlgraph.O2O, true, UserTable, UserColumn),
	)
}
func newChildrenStep() *sqlgraph.Step {
	return sqlgraph.NewStep(
		sqlgraph.From(Table, FieldID),
		sqlgraph.To(Table, FieldID),
		sqlgraph.Edge(sqlgraph.O2M, true, ChildrenTable, ChildrenColumn),
	)
}
func newParentStep() *sqlgraph.Step {
	return sqlgraph.NewStep(
		sqlgraph.From(Table, FieldID),
		sqlgraph.To(Table, FieldID),
		sqlgraph.Edge(sqlgraph.M2O, false, ParentTable, ParentColumn),
	)
}