1package dynamodbattribute_test
2
3import (
4	"fmt"
5	"reflect"
6
7	"github.com/aws/aws-sdk-go/aws"
8	"github.com/aws/aws-sdk-go/service/dynamodb"
9	"github.com/aws/aws-sdk-go/service/dynamodb/dynamodbattribute"
10)
11
12func ExampleMarshal() {
13	type Record struct {
14		Bytes   []byte
15		MyField string
16		Letters []string
17		Numbers []int
18	}
19
20	r := Record{
21		Bytes:   []byte{48, 49},
22		MyField: "MyFieldValue",
23		Letters: []string{"a", "b", "c", "d"},
24		Numbers: []int{1, 2, 3},
25	}
26	av, err := dynamodbattribute.Marshal(r)
27	fmt.Println("err", err)
28	fmt.Println("Bytes", av.M["Bytes"])
29	fmt.Println("MyField", av.M["MyField"])
30	fmt.Println("Letters", av.M["Letters"])
31	fmt.Println("Numbers", av.M["Numbers"])
32
33	// Output:
34	// err <nil>
35	// Bytes {
36	//   B: <binary> len 2
37	// }
38	// MyField {
39	//   S: "MyFieldValue"
40	// }
41	// Letters {
42	//   L: [
43	//     {
44	//       S: "a"
45	//     },
46	//     {
47	//       S: "b"
48	//     },
49	//     {
50	//       S: "c"
51	//     },
52	//     {
53	//       S: "d"
54	//     }
55	//   ]
56	// }
57	// Numbers {
58	//   L: [{
59	//       N: "1"
60	//     },{
61	//       N: "2"
62	//     },{
63	//       N: "3"
64	//     }]
65	// }
66}
67
68func ExampleUnmarshal() {
69	type Record struct {
70		Bytes   []byte
71		MyField string
72		Letters []string
73		A2Num   map[string]int
74	}
75
76	expect := Record{
77		Bytes:   []byte{48, 49},
78		MyField: "MyFieldValue",
79		Letters: []string{"a", "b", "c", "d"},
80		A2Num:   map[string]int{"a": 1, "b": 2, "c": 3},
81	}
82
83	av := &dynamodb.AttributeValue{
84		M: map[string]*dynamodb.AttributeValue{
85			"Bytes":   {B: []byte{48, 49}},
86			"MyField": {S: aws.String("MyFieldValue")},
87			"Letters": {L: []*dynamodb.AttributeValue{
88				{S: aws.String("a")}, {S: aws.String("b")}, {S: aws.String("c")}, {S: aws.String("d")},
89			}},
90			"A2Num": {M: map[string]*dynamodb.AttributeValue{
91				"a": {N: aws.String("1")},
92				"b": {N: aws.String("2")},
93				"c": {N: aws.String("3")},
94			}},
95		},
96	}
97
98	actual := Record{}
99	err := dynamodbattribute.Unmarshal(av, &actual)
100	fmt.Println(err, reflect.DeepEqual(expect, actual))
101
102	// Output:
103	// <nil> true
104}
105