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47 lines
885 B
47 lines
885 B
package clickhouse
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import (
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"database/sql/driver"
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"reflect"
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"strconv"
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)
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func (stmt *stmt) ColumnConverter(idx int) driver.ValueConverter {
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return converter{}
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}
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func (c *conn) CheckNamedValue(nv *driver.NamedValue) (err error) {
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nv.Value, err = converter{}.ConvertValue(nv.Value)
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return
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}
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type converter struct{}
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const maxAllowedUInt64 = 1<<63 - 1
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func (c converter) ConvertValue(v interface{}) (driver.Value, error) {
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if driver.IsValue(v) {
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return v, nil
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}
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rv := reflect.ValueOf(v)
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switch rv.Kind() {
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case reflect.Ptr:
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// indirect pointers
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if rv.IsNil() {
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return nil, nil
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}
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return c.ConvertValue(rv.Elem().Interface())
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case reflect.Uint64:
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u64 := rv.Uint()
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if u64 > maxAllowedUInt64 {
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s := strconv.FormatUint(u64, 10)
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bytes := []byte(s)
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return bytes, nil
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}
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return u64, nil
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}
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return driver.DefaultParameterConverter.ConvertValue(v)
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}
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