mirror of
https://github.com/googleapis/genai-toolbox.git
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a37cfa841d
Update the type conversion to according to the types that mysql driver returns: https://github.com/go-sql-driver/mysql/blob/v1.9.3/fields.go All `scanTypeBytes` or `scanTypeString` or `scanTypeNullString` will now be converted into string. Remaining types (numeric types or `scanTypeUnknown`) are all returned as is. Separately handle "JSON" to prevent double marshaling. Fixes #840
44 lines
1.4 KiB
Go
44 lines
1.4 KiB
Go
// Copyright 2025 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package mysqlcommon
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import (
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"database/sql"
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"encoding/json"
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"reflect"
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)
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// ConvertToType handles casting mysql returns to the right type
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// types for mysql driver: https://github.com/go-sql-driver/mysql/blob/v1.9.3/fields.go
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// all numeric type or unknown type will be return as is.
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func ConvertToType(t *sql.ColumnType, v any) (any, error) {
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switch t.ScanType() {
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case reflect.TypeOf(""), reflect.TypeOf([]byte{}), reflect.TypeOf(sql.NullString{}):
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// unmarshal JSON data before returning to prevent double marshaling
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if t.DatabaseTypeName() == "JSON" {
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// unmarshal JSON data before storing to prevent double marshaling
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var unmarshaledData any
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err := json.Unmarshal(v.([]byte), &unmarshaledData)
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if err != nil {
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return nil, err
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}
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return unmarshaledData, nil
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}
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return string(v.([]byte)), nil
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default:
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return v, nil
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}
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}
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