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package attributevalue_test
import (
"fmt"
"reflect"
"github.com/aws/aws-sdk-go-v2/feature/dynamodb/attributevalue"
"github.com/aws/aws-sdk-go-v2/internal/awsutil"
"github.com/aws/aws-sdk-go-v2/service/dynamodb/types"
)
func ExampleMarshal() {
type Record struct {
Bytes []byte
MyField string
Letters []string
Numbers []int
}
r := Record{
Bytes: []byte{48, 49},
MyField: "MyFieldValue",
Letters: []string{"a", "b", "c", "d"},
Numbers: []int{1, 2, 3},
}
av, err := attributevalue.Marshal(r)
m := av.(*types.AttributeValueMemberM)
fmt.Println("err", err)
fmt.Println("Bytes", awsutil.Prettify(m.Value["Bytes"]))
fmt.Println("MyField", awsutil.Prettify(m.Value["MyField"]))
fmt.Println("Letters", awsutil.Prettify(m.Value["Letters"]))
fmt.Println("Numbers", awsutil.Prettify(m.Value["Numbers"]))
// output:
// err <nil>
// Bytes &{
// Value: <binary> len 2
// }
// MyField &{
// Value: "MyFieldValue"
// }
// Letters &{
// Value: [
// &{
// Value: "a"
// },
// &{
// Value: "b"
// },
// &{
// Value: "c"
// },
// &{
// Value: "d"
// }
// ]
// }
// Numbers &{
// Value: [
// &{
// Value: "1"
// },
// &{
// Value: "2"
// },
// &{
// Value: "3"
// }
// ]
// }
}
func ExampleUnmarshal() {
type Record struct {
Bytes []byte
MyField string
Letters []string
A2Num map[string]int
}
expect := Record{
Bytes: []byte{48, 49},
MyField: "MyFieldValue",
Letters: []string{"a", "b", "c", "d"},
A2Num: map[string]int{"a": 1, "b": 2, "c": 3},
}
av := &types.AttributeValueMemberM{
Value: map[string]types.AttributeValue{
"Bytes": &types.AttributeValueMemberB{Value: []byte{48, 49}},
"MyField": &types.AttributeValueMemberS{Value: "MyFieldValue"},
"Letters": &types.AttributeValueMemberL{Value: []types.AttributeValue{
&types.AttributeValueMemberS{Value: "a"},
&types.AttributeValueMemberS{Value: "b"},
&types.AttributeValueMemberS{Value: "c"},
&types.AttributeValueMemberS{Value: "d"},
}},
"A2Num": &types.AttributeValueMemberM{Value: map[string]types.AttributeValue{
"a": &types.AttributeValueMemberN{Value: "1"},
"b": &types.AttributeValueMemberN{Value: "2"},
"c": &types.AttributeValueMemberN{Value: "3"},
}},
},
}
actual := Record{}
err := attributevalue.Unmarshal(av, &actual)
fmt.Println(err, reflect.DeepEqual(expect, actual))
// Output:
// <nil> true
}
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