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package dynamodbattribute_test
import (
"fmt"
"reflect"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/dynamodb"
"github.com/aws/aws-sdk-go/service/dynamodb/dynamodbattribute"
)
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 := dynamodbattribute.Marshal(r)
fmt.Println("err", err)
fmt.Println("Bytes", av.M["Bytes"])
fmt.Println("MyField", av.M["MyField"])
fmt.Println("Letters", av.M["Letters"])
fmt.Println("Numbers", av.M["Numbers"])
// Output:
// err <nil>
// Bytes {
// B: <binary> len 2
// }
// MyField {
// S: "MyFieldValue"
// }
// Letters {
// L: [
// {
// S: "a"
// },
// {
// S: "b"
// },
// {
// S: "c"
// },
// {
// S: "d"
// }
// ]
// }
// Numbers {
// L: [{
// N: "1"
// },{
// N: "2"
// },{
// N: "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 := &dynamodb.AttributeValue{
M: map[string]*dynamodb.AttributeValue{
"Bytes": {B: []byte{48, 49}},
"MyField": {S: aws.String("MyFieldValue")},
"Letters": {L: []*dynamodb.AttributeValue{
{S: aws.String("a")}, {S: aws.String("b")}, {S: aws.String("c")}, {S: aws.String("d")},
}},
"A2Num": {M: map[string]*dynamodb.AttributeValue{
"a": {N: aws.String("1")},
"b": {N: aws.String("2")},
"c": {N: aws.String("3")},
}},
},
}
actual := Record{}
err := dynamodbattribute.Unmarshal(av, &actual)
fmt.Println(err, reflect.DeepEqual(expect, actual))
// Output:
// <nil> true
}
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