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Merge pull request #53 from emirpasic/json
JSON serialization (marshaling) / deserialization (unmarshaling)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| // Copyright (c) 2015, Emir Pasic. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
|
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| package containers | ||
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| // JSONSerializer provides JSON serialization | ||
| type JSONSerializer interface { | ||
| // ToJSON outputs the JSON representation of containers's elements. | ||
| ToJSON() ([]byte, error) | ||
| } | ||
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| // JSONDeserializer provides JSON deserialization | ||
| type JSONDeserializer interface { | ||
| // FromJSON populates containers's elements from the input JSON representation. | ||
| FromJSON([]byte) error | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| package examples | ||
|
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| import ( | ||
| "fmt" | ||
| "github.com/emirpasic/gods/lists/arraylist" | ||
| "github.com/emirpasic/gods/maps/hashmap" | ||
| ) | ||
|
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| // ListSerializationExample demonstrates how to serialize and deserialize lists to and from JSON | ||
| func ListSerializationExample() { | ||
| list := arraylist.New() | ||
| list.Add("a", "b", "c") | ||
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| // Serialization (marshalling) | ||
| json, err := list.ToJSON() | ||
| if err != nil { | ||
| fmt.Println(err) | ||
| } | ||
| fmt.Println(string(json)) // ["a","b","c"] | ||
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| // Deserialization (unmarshalling) | ||
| json = []byte(`["a","b"]`) | ||
| err = list.FromJSON(json) | ||
| if err != nil { | ||
| fmt.Println(err) | ||
| } | ||
| fmt.Println(list) // ArrayList ["a","b"] | ||
| } | ||
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| // MapSerializationExample demonstrates how to serialize and deserialize maps to and from JSON | ||
| func MapSerializationExample() { | ||
| m := hashmap.New() | ||
| m.Put("a", "1") | ||
| m.Put("b", "2") | ||
| m.Put("c", "3") | ||
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| // Serialization (marshalling) | ||
| json, err := m.ToJSON() | ||
| if err != nil { | ||
| fmt.Println(err) | ||
| } | ||
| fmt.Println(string(json)) // {"a":"1","b":"2","c":"3"} | ||
|
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| // Deserialization (unmarshalling) | ||
| json = []byte(`{"a":"1","b":"2"}`) | ||
| err = m.FromJSON(json) | ||
| if err != nil { | ||
| fmt.Println(err) | ||
| } | ||
| fmt.Println(m) // HashMap {"a":"1","b":"2"} | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| // Copyright (c) 2015, Emir Pasic. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
|
|
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| package arraylist | ||
|
|
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| import ( | ||
| "encoding/json" | ||
| "github.com/emirpasic/gods/containers" | ||
| ) | ||
|
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| func assertSerializationImplementation() { | ||
| var _ containers.JSONSerializer = (*List)(nil) | ||
| var _ containers.JSONDeserializer = (*List)(nil) | ||
| } | ||
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| // ToJSON outputs the JSON representation of list's elements. | ||
| func (list *List) ToJSON() ([]byte, error) { | ||
| return json.Marshal(list.elements[:list.size]) | ||
| } | ||
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| // FromJSON populates list's elements from the input JSON representation. | ||
| func (list *List) FromJSON(data []byte) error { | ||
| err := json.Unmarshal(data, &list.elements) | ||
| if err == nil { | ||
| list.size = len(list.elements) | ||
| } | ||
| return err | ||
| } |
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