47 lines
864 B
Go
47 lines
864 B
Go
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package dynamodb
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import (
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"github.com/aws/aws-sdk-go/service/dynamodb/dynamodbattribute"
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"github.com/guregu/dynamo"
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)
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// As updpate all item not supported so set manually via Set and SetNullable for empty field
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func UpdateByHashKey(table dynamo.Table, hashKey string, hashValue string, item interface{}) error {
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existingValue, err := dynamo.MarshalItem(item)
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var i interface{}
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if err != nil {
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return err
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}
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nullableValue, err := dynamodbattribute.MarshalMap(item)
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if err != nil {
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return err
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}
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u := table.Update(hashKey, hashValue)
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for k, v := range existingValue {
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if k == hashKey {
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continue
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}
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u = u.Set(k, v)
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}
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for k, v := range nullableValue {
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if k == hashKey {
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continue
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}
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dynamodbattribute.Unmarshal(v, &i)
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if i == nil {
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u = u.SetNullable(k, v)
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}
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}
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err = u.Run()
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if err != nil {
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return err
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}
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return nil
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}
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