Example usage for com.amazonaws.services.dynamodbv2.model ReturnValue NONE

Introduction

In this page you can find the example usage for com.amazonaws.services.dynamodbv2.model ReturnValue NONE.

Prototype

ReturnValue NONE

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Usage

From source file:com.eho.dynamodb.DynamoDBConnection.java

public static PutItemOutcome upload_resource_old(String resource) throws Exception {
    String id;// ww w .j  a v a 2  s .  c  o  m
    JSONObject json_resource = new JSONObject(resource);
    //does the resource have a primary key?
    if (json_resource.has(PRIMARY_KEY))//if it does not have a primary key, create one using uuid
        id = json_resource.getString(PRIMARY_KEY);
    else
        id = UUID.randomUUID().toString();

    DynamoDB dynamoDB = new DynamoDB(dynamoDBClient);
    Table table = dynamoDB.getTable(PATIENT_TABLE);

    //lets retreive based on the key. if key invalid (not assigned yet) nullis returned.
    Item retreived_item = table.getItem(PRIMARY_KEY, id);
    if (retreived_item == null)//if null instantiate it
    {
        retreived_item = new Item();
        retreived_item.withPrimaryKey(PRIMARY_KEY, id);
    }

    Integer new_version = retreived_item.getInt("version") + 1;
    retreived_item.withInt("version", new_version);

    Item item_to_upload = Item.fromJSON(retreived_item.toJSONPretty()).withJSON("Document", resource);
    PutItemSpec putItemSpec = new PutItemSpec().withItem(item_to_upload).withReturnValues(ReturnValue.NONE);
    return table.putItem(putItemSpec);
}

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