CODEWITHSUNDEEP
amazon-web-servicesamazon-dynamodb
vivek
vivek

Reputation: 231

Not allowing duplicates in dynamoDB

I am trying to insert a row using following piece of code:

Item item = new Item().withPrimaryKey("id", id).withString(
                "owner", owner);

if (properties != null) {
    item.withMap("property", properties);
}

Expected expected = new Expected(id).notExist();

return table.putItem(item, expected).toString();

This is not supposed to update if entry with "id" with provided id already exists in the table. However, this is still updating the entry in the table with the new values.

What am I doing wrong here?

Upvotes: 1

Views: 673

Answers (1)

mkobit
mkobit

Reputation: 47259

You are providing the attribute value to the Expected constructor when the constructor is for the attribute name.

public Expected(java.lang.String attrName)

You should change from using the parameter/hash key value id

Expected expected = new Expected(id).notExist();

to use the attribute name

Expected expected = new Expected("id").notExist();

Upvotes: 1

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