forked from xo/xo
/
book.xo.go
210 lines (197 loc) · 6.38 KB
/
book.xo.go
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package sqlserver
// Code generated by xo. DO NOT EDIT.
import (
"context"
"time"
)
// Book represents a row from 'django.books'.
type Book struct {
BookID int64 `json:"book_id"` // book_id
ISBN string `json:"isbn"` // isbn
BookType int `json:"book_type"` // book_type
Title string `json:"title"` // title
Year int `json:"year"` // year
Available time.Time `json:"available"` // available
BooksAuthorIDFkey int64 `json:"books_author_id_fkey"` // books_author_id_fkey
// xo fields
_exists, _deleted bool
}
// Exists returns true when the Book exists in the database.
func (b *Book) Exists() bool {
return b._exists
}
// Deleted returns true when the Book has been marked for deletion from
// the database.
func (b *Book) Deleted() bool {
return b._deleted
}
// Insert inserts the Book to the database.
func (b *Book) Insert(ctx context.Context, db DB) error {
switch {
case b._exists: // already exists
return logerror(&ErrInsertFailed{ErrAlreadyExists})
case b._deleted: // deleted
return logerror(&ErrInsertFailed{ErrMarkedForDeletion})
}
// insert (primary key generated and returned by database)
const sqlstr = `INSERT INTO django.books (` +
`isbn, book_type, title, year, available, books_author_id_fkey` +
`) VALUES (` +
`@p1, @p2, @p3, @p4, @p5, @p6` +
`); SELECT ID = CONVERT(BIGINT, SCOPE_IDENTITY())`
// run
logf(sqlstr, b.ISBN, b.BookType, b.Title, b.Year, b.Available, b.BooksAuthorIDFkey)
rows, err := db.QueryContext(ctx, sqlstr, b.ISBN, b.BookType, b.Title, b.Year, b.Available, b.BooksAuthorIDFkey)
if err != nil {
return logerror(err)
}
defer rows.Close()
// retrieve id
var id int64
for rows.Next() {
if err := rows.Scan(&id); err != nil {
return logerror(err)
}
}
if err := rows.Err(); err != nil {
return logerror(err)
} // set primary key
b.BookID = int64(id)
// set exists
b._exists = true
return nil
}
// Update updates a Book in the database.
func (b *Book) Update(ctx context.Context, db DB) error {
switch {
case !b._exists: // doesn't exist
return logerror(&ErrUpdateFailed{ErrDoesNotExist})
case b._deleted: // deleted
return logerror(&ErrUpdateFailed{ErrMarkedForDeletion})
}
// update with primary key
const sqlstr = `UPDATE django.books SET ` +
`isbn = @p1, book_type = @p2, title = @p3, year = @p4, available = @p5, books_author_id_fkey = @p6 ` +
`WHERE book_id = @p7`
// run
logf(sqlstr, b.ISBN, b.BookType, b.Title, b.Year, b.Available, b.BooksAuthorIDFkey, b.BookID)
if _, err := db.ExecContext(ctx, sqlstr, b.ISBN, b.BookType, b.Title, b.Year, b.Available, b.BooksAuthorIDFkey, b.BookID); err != nil {
return logerror(err)
}
return nil
}
// Save saves the Book to the database.
func (b *Book) Save(ctx context.Context, db DB) error {
if b.Exists() {
return b.Update(ctx, db)
}
return b.Insert(ctx, db)
}
// Upsert performs an upsert for Book.
func (b *Book) Upsert(ctx context.Context, db DB) error {
switch {
case b._deleted: // deleted
return logerror(&ErrUpsertFailed{ErrMarkedForDeletion})
}
// upsert
const sqlstr = `MERGE django.books AS t ` +
`USING (` +
`SELECT @p1 book_id, @p2 isbn, @p3 book_type, @p4 title, @p5 year, @p6 available, @p7 books_author_id_fkey ` +
`) AS s ` +
`ON s.book_id = t.book_id ` +
`WHEN MATCHED THEN ` +
`UPDATE SET ` +
`t.isbn = s.isbn, t.book_type = s.book_type, t.title = s.title, t.year = s.year, t.available = s.available, t.books_author_id_fkey = s.books_author_id_fkey ` +
`WHEN NOT MATCHED THEN ` +
`INSERT (` +
`isbn, book_type, title, year, available, books_author_id_fkey` +
`) VALUES (` +
`s.isbn, s.book_type, s.title, s.year, s.available, s.books_author_id_fkey` +
`);`
// run
logf(sqlstr, b.BookID, b.ISBN, b.BookType, b.Title, b.Year, b.Available, b.BooksAuthorIDFkey)
if _, err := db.ExecContext(ctx, sqlstr, b.BookID, b.ISBN, b.BookType, b.Title, b.Year, b.Available, b.BooksAuthorIDFkey); err != nil {
return logerror(err)
}
// set exists
b._exists = true
return nil
}
// Delete deletes the Book from the database.
func (b *Book) Delete(ctx context.Context, db DB) error {
switch {
case !b._exists: // doesn't exist
return nil
case b._deleted: // deleted
return nil
}
// delete with single primary key
const sqlstr = `DELETE FROM django.books ` +
`WHERE book_id = @p1`
// run
logf(sqlstr, b.BookID)
if _, err := db.ExecContext(ctx, sqlstr, b.BookID); err != nil {
return logerror(err)
}
// set deleted
b._deleted = true
return nil
}
// BookByBookID retrieves a row from 'django.books' as a Book.
//
// Generated from index 'books_book_id_pkey'.
func BookByBookID(ctx context.Context, db DB, bookID int64) (*Book, error) {
// query
const sqlstr = `SELECT ` +
`book_id, isbn, book_type, title, year, available, books_author_id_fkey ` +
`FROM django.books ` +
`WHERE book_id = @p1`
// run
logf(sqlstr, bookID)
b := Book{
_exists: true,
}
if err := db.QueryRowContext(ctx, sqlstr, bookID).Scan(&b.BookID, &b.ISBN, &b.BookType, &b.Title, &b.Year, &b.Available, &b.BooksAuthorIDFkey); err != nil {
return nil, logerror(err)
}
return &b, nil
}
// BooksByBooksAuthorIDFkey retrieves a row from 'django.books' as a Book.
//
// Generated from index 'books_books_author_id_fkey_73ac0c26'.
func BooksByBooksAuthorIDFkey(ctx context.Context, db DB, booksAuthorIDFkey int64) ([]*Book, error) {
// query
const sqlstr = `SELECT ` +
`book_id, isbn, book_type, title, year, available, books_author_id_fkey ` +
`FROM django.books ` +
`WHERE books_author_id_fkey = @p1`
// run
logf(sqlstr, booksAuthorIDFkey)
rows, err := db.QueryContext(ctx, sqlstr, booksAuthorIDFkey)
if err != nil {
return nil, logerror(err)
}
defer rows.Close()
// process
var res []*Book
for rows.Next() {
b := Book{
_exists: true,
}
// scan
if err := rows.Scan(&b.BookID, &b.ISBN, &b.BookType, &b.Title, &b.Year, &b.Available, &b.BooksAuthorIDFkey); err != nil {
return nil, logerror(err)
}
res = append(res, &b)
}
if err := rows.Err(); err != nil {
return nil, logerror(err)
}
return res, nil
}
// Author returns the Author associated with the Book's (BooksAuthorIDFkey).
//
// Generated from foreign key 'books_books_author_id_fkey_73ac0c26_fk_authors_author_id'.
func (b *Book) Author(ctx context.Context, db DB) (*Author, error) {
return AuthorByAuthorID(ctx, db, b.BooksAuthorIDFkey)
}