CODEWITHSUNDEEP
javaamazon-web-servicesamazon-dynamodbdynamodb-queries
Lisa
Lisa

Reputation: 169

AWS DynamoDB constraint on DynamoDBAttribute

I am trying to put a constraint on an attribute based on another attribute. If state is enabled then name has to have a value. How can I put a constraint? Using jdk 8

@DynamoDBTable(tableName = "myTable")
public class MyTable {
    private String id;
    private State state;//Enabled or Disabled
    private String name;//if state is enabled then name property must have a value 

    public MyTable() {}

    public MyTable(final String id) {
        this.id = id;
    }

    @DynamoDBHashKey
    public String getId() {
        return id;
    }

    public void setId(final String id) {
        this.id = id;
    }

    public State getState() {
        return state;
    }

    public void setState(final State state) {
        this.state = state;
    }

    public String getName() {
        return name;
    }

    public void setName(final String name) {
        this.name = name;
    }
}

Upvotes: 0

Views: 123

Answers (1)

Horatiu Jeflea
Horatiu Jeflea

Reputation: 7404

This can be done only programatically:

if ("enabled".equals(myTable.getState()) {
    Objects.requireNonNull(myTable.getName(), "Name is missing while state is enabled");
}
mapper.save(myTable);

Upvotes: 2

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