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    Compare Exchange: How to Get Compare Exchange Value

    Syntax

    Method: 

    public GetCompareExchangeValueOperation(string key)

    Returned object: 

    public class CompareExchangeValue<T>
{
    public readonly string Key;
    public readonly T Value;
    public readonly long Index;
}
    Key string The unique object identifier
    Value T The existing value that Key has
    Index long The version number of the Value that is stored for the specified Key

    Session Interface and Lazy Get

    You can also get compare exchange values through the session cluster transactions at session.Advanced.ClusterTransaction.

    This method also exposes methods getting compare exchange lazily.

    Example I - Value is 'long' 

    CompareExchangeValue<long> readResult =
    store.Operations.Send(new GetCompareExchangeValueOperation<long>("NextClientId"));

long value = readResult.Value;

    Example II - Value is a custom object 

    CompareExchangeValue<User> readResult =
    store.Operations.Send(new GetCompareExchangeValueOperation<User>("AdminUser"));

User admin = readResult.Value;
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