-
Notifications
You must be signed in to change notification settings - Fork 0
/
resolversContainer.go
executable file
·87 lines (70 loc) · 2.12 KB
/
resolversContainer.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
package containers
import (
"github.com/cornelk/hashmap"
"github.com/numbatx/gn-numbat/dataRetriever"
)
// ResolversContainer is a resolvers holder organized by type
type ResolversContainer struct {
objects *hashmap.HashMap
}
// NewResolversContainer will create a new instance of a container
func NewResolversContainer() *ResolversContainer {
return &ResolversContainer{
objects: &hashmap.HashMap{},
}
}
// Get returns the object stored at a certain key.
// Returns an error if the element does not exist
func (rc *ResolversContainer) Get(key string) (dataRetriever.Resolver, error) {
value, ok := rc.objects.Get(key)
if !ok {
return nil, dataRetriever.ErrInvalidContainerKey
}
resolver, ok := value.(dataRetriever.Resolver)
if !ok {
return nil, dataRetriever.ErrWrongTypeInContainer
}
return resolver, nil
}
// Add will add an object at a given key. Returns
// an error if the element already exists
func (rc *ResolversContainer) Add(key string, resolver dataRetriever.Resolver) error {
if resolver == nil {
return dataRetriever.ErrNilContainerElement
}
ok := rc.objects.Insert(key, resolver)
if !ok {
return dataRetriever.ErrContainerKeyAlreadyExists
}
return nil
}
// AddMultiple will add objects with given keys. Returns
// an error if one element already exists, lengths mismatch or an interceptor is nil
func (rc *ResolversContainer) AddMultiple(keys []string, resolvers []dataRetriever.Resolver) error {
if len(keys) != len(resolvers) {
return dataRetriever.ErrLenMismatch
}
for idx, key := range keys {
err := rc.Add(key, resolvers[idx])
if err != nil {
return err
}
}
return nil
}
// Replace will add (or replace if it already exists) an object at a given key
func (rc *ResolversContainer) Replace(key string, resolver dataRetriever.Resolver) error {
if resolver == nil {
return dataRetriever.ErrNilContainerElement
}
rc.objects.Set(key, resolver)
return nil
}
// Remove will remove an object at a given key
func (rc *ResolversContainer) Remove(key string) {
rc.objects.Del(key)
}
// Len returns the length of the added objects
func (rc *ResolversContainer) Len() int {
return rc.objects.Len()
}