forked from xo/xo
/
tag.xo.go
150 lines (139 loc) · 3.38 KB
/
tag.xo.go
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package mysql
// Code generated by xo. DO NOT EDIT.
import (
"context"
)
// Tag represents a row from 'django.tags'.
type Tag struct {
TagID int64 `json:"tag_id"` // tag_id
Tag string `json:"tag"` // tag
// xo fields
_exists, _deleted bool
}
// Exists returns true when the Tag exists in the database.
func (t *Tag) Exists() bool {
return t._exists
}
// Deleted returns true when the Tag has been marked for deletion from
// the database.
func (t *Tag) Deleted() bool {
return t._deleted
}
// Insert inserts the Tag to the database.
func (t *Tag) Insert(ctx context.Context, db DB) error {
switch {
case t._exists: // already exists
return logerror(&ErrInsertFailed{ErrAlreadyExists})
case t._deleted: // deleted
return logerror(&ErrInsertFailed{ErrMarkedForDeletion})
}
// insert (primary key generated and returned by database)
const sqlstr = `INSERT INTO django.tags (` +
`tag` +
`) VALUES (` +
`?` +
`)`
// run
logf(sqlstr, t.Tag)
res, err := db.ExecContext(ctx, sqlstr, t.Tag)
if err != nil {
return logerror(err)
}
// retrieve id
id, err := res.LastInsertId()
if err != nil {
return logerror(err)
} // set primary key
t.TagID = int64(id)
// set exists
t._exists = true
return nil
}
// Update updates a Tag in the database.
func (t *Tag) Update(ctx context.Context, db DB) error {
switch {
case !t._exists: // doesn't exist
return logerror(&ErrUpdateFailed{ErrDoesNotExist})
case t._deleted: // deleted
return logerror(&ErrUpdateFailed{ErrMarkedForDeletion})
}
// update with primary key
const sqlstr = `UPDATE django.tags SET ` +
`tag = ? ` +
`WHERE tag_id = ?`
// run
logf(sqlstr, t.Tag, t.TagID)
if _, err := db.ExecContext(ctx, sqlstr, t.Tag, t.TagID); err != nil {
return logerror(err)
}
return nil
}
// Save saves the Tag to the database.
func (t *Tag) Save(ctx context.Context, db DB) error {
if t.Exists() {
return t.Update(ctx, db)
}
return t.Insert(ctx, db)
}
// Upsert performs an upsert for Tag.
func (t *Tag) Upsert(ctx context.Context, db DB) error {
switch {
case t._deleted: // deleted
return logerror(&ErrUpsertFailed{ErrMarkedForDeletion})
}
// upsert
const sqlstr = `INSERT INTO django.tags (` +
`tag_id, tag` +
`) VALUES (` +
`?, ?` +
`)` +
` ON DUPLICATE KEY UPDATE ` +
`tag = VALUES(tag)`
// run
logf(sqlstr, t.TagID, t.Tag)
if _, err := db.ExecContext(ctx, sqlstr, t.TagID, t.Tag); err != nil {
return logerror(err)
}
// set exists
t._exists = true
return nil
}
// Delete deletes the Tag from the database.
func (t *Tag) Delete(ctx context.Context, db DB) error {
switch {
case !t._exists: // doesn't exist
return nil
case t._deleted: // deleted
return nil
}
// delete with single primary key
const sqlstr = `DELETE FROM django.tags ` +
`WHERE tag_id = ?`
// run
logf(sqlstr, t.TagID)
if _, err := db.ExecContext(ctx, sqlstr, t.TagID); err != nil {
return logerror(err)
}
// set deleted
t._deleted = true
return nil
}
// TagByTagID retrieves a row from 'django.tags' as a Tag.
//
// Generated from index 'tags_tag_id_pkey'.
func TagByTagID(ctx context.Context, db DB, tagID int64) (*Tag, error) {
// query
const sqlstr = `SELECT ` +
`tag_id, tag ` +
`FROM django.tags ` +
`WHERE tag_id = ?`
// run
logf(sqlstr, tagID)
t := Tag{
_exists: true,
}
if err := db.QueryRowContext(ctx, sqlstr, tagID).Scan(&t.TagID, &t.Tag); err != nil {
return nil, logerror(err)
}
return &t, nil
}