72 lines
1.3 KiB
Go
72 lines
1.3 KiB
Go
package exec
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import (
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"database/sql"
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"errors"
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"reflect"
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"git.gdulai.com/gdulai/simpleorm"
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"git.gdulai.com/gdulai/simpleorm/schema"
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log "gitlab.com/gdulai/simpleloglvl"
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)
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type Delete[T any] struct {
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target schema.Table
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toDelete []T
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}
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func NewDelete[T any](orm *simpleorm.ORM, toDelete []T) (Delete[T], error) {
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table, ok := orm.Cache().Get(reflect.TypeFor[T]().Name())
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if !ok {
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return Delete[T]{}, errors.New("Failed to get table from schema cache")
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}
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return Delete[T]{target: *table, toDelete: toDelete}, nil
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}
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func (d *Delete[T]) Execute(conn *simpleorm.DBConnection) error {
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return d.execute(conn, nil)
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}
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func (d *Delete[T]) execute(conn *simpleorm.DBConnection, tx *sql.Tx) error {
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count := len(d.toDelete)
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dml, err := d.target.GetDeleteDML(count)
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if err != nil {
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return err
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}
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var params []any
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for _, del := range d.toDelete {
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pkCols, err := getPk(del, d.target)
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if err != nil {
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return err
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}
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for _, pk := range pkCols {
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params = append(params, pk)
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}
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}
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log.LogDebug("%s [%s]", dml, params)
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var stmt *sql.Stmt
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if tx != nil {
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stmt, err = tx.Prepare(dml)
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} else {
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stmt, err = conn.Prepare(dml)
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}
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defer stmt.Close()
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result, err := stmt.Exec(params...)
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if err != nil {
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return err
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} else {
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rowsAffected, _ := result.RowsAffected()
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log.LogInfo("Deleted %s row", rowsAffected)
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}
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return nil
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}
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