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Github GitHub - bijukunjummen/aws-sdk2-dynamo-json-helper: Java Library to conve...
source link: https://github.com/bijukunjummen/aws-sdk2-dynamo-json-helper
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Jackson JsonNode to AWS SDK 2 AttributeValue
This is a small java library that provides a utility method to convert a Jackson JsonNode to an AWS SDK 2.x AttributeValue and back.
Using the library:
Add a dependency, for eg. with gradle:
implementation("com.github.bijukunjummen:aws-sdk2-dyanamo-json-helper:$VERSION")
Now, in the code, given a json which looks like this:
{ "key1": "value1", "key2": [ "arr1", "arr2" ], "level1": { "level2": { "level3": { "l3Key": "l3Value" } } } }
The Json can be converted to an AttributeValue the following way:
JsonNode jsonNode = objectMapper.readTree(json); AttributeValue dataAttributeValue = JsonAttributeValueUtil.toAttributeValue(jsonNode);
The utility recurses the json structure and creates the nested AttributeValue structure.
Once it is saved to dynamoDB, after retrieving the content, it can be converted back to a json the following way:
AttributeValue attributeValue = response.item().get("data"); JsonNode dataJsonNode = JsonAttributeValueUtil.fromAttributeValue(attributeValue);
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