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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| package postgres | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "io" | ||
| "strings" | ||
| ) | ||
|
|
||
| // delete deletes the row with the provided key from the table. | ||
| func (tm *objectIndexer) delete(ctx context.Context, conn dbConn, key interface{}) error { | ||
| buf := new(strings.Builder) | ||
| var params []interface{} | ||
| var err error | ||
| if !tm.options.disableRetainDeletions && tm.typ.RetainDeletions { | ||
| params, err = tm.retainDeleteSqlAndParams(buf, key) | ||
| } else { | ||
| params, err = tm.deleteSqlAndParams(buf, key) | ||
| } | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| sqlStr := buf.String() | ||
| tm.options.logger.Info("Delete", "sql", sqlStr, "params", params) | ||
| _, err = conn.ExecContext(ctx, sqlStr, params...) | ||
| return err | ||
| } | ||
|
|
||
| // deleteSqlAndParams generates a DELETE statement and binding parameters for the provided key. | ||
| func (tm *objectIndexer) deleteSqlAndParams(w io.Writer, key interface{}) ([]interface{}, error) { | ||
| _, err := fmt.Fprintf(w, "DELETE FROM %q", tm.tableName()) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| _, keyParams, err := tm.whereSqlAndParams(w, key, 1) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| _, err = fmt.Fprintf(w, ";") | ||
| return keyParams, err | ||
| } | ||
|
|
||
| // retainDeleteSqlAndParams generates an UPDATE statement to set the _deleted column to true for the provided key | ||
| // which is used when the table is set to retain deletions mode. | ||
| func (tm *objectIndexer) retainDeleteSqlAndParams(w io.Writer, key interface{}) ([]interface{}, error) { | ||
| _, err := fmt.Fprintf(w, "UPDATE %q SET _deleted = TRUE", tm.tableName()) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| _, keyParams, err := tm.whereSqlAndParams(w, key, 1) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| _, err = fmt.Fprintf(w, ";") | ||
| return keyParams, err | ||
| } |
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