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compositeconverter.go
63 lines (57 loc) · 1.82 KB
/
compositeconverter.go
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package typemanager
import (
"github.com/noctarius/timescaledb-event-streamer/spi/pgtypes"
)
func newCompositeConverter(
typeManager *typeManager, typ pgtypes.PgType,
) (pgtypes.TypeConverter, error) {
columns, err := typ.CompositeColumns()
if err != nil {
return nil, err
}
columnConverters := make(map[string]pgtypes.TypeConverter)
for _, column := range columns {
dataType := column.Type().Oid()
converter, err := typeManager.ResolveTypeConverter(dataType)
if err != nil {
return nil, err
}
columnConverters[column.Name()] = func(_ uint32, value any) (any, error) {
return converter(dataType, value)
}
}
return func(_ uint32, value any) (any, error) {
if m, ok := value.(map[string]any); ok {
result := make(map[string]any)
for k, v := range m {
if converter, present := columnConverters[k]; present {
// OID is already bound
r, err := converter(0, v)
if err != nil {
return nil, err
}
v = r
}
result[k] = v
}
return result, nil
}
return nil, errIllegalValue
}, nil
}