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Advanced Audience segment qualification methods for the Java SDK

Use the fetchQualifiedSegments method to retrieve the external audience mapping for the user from the Optimizely Data Platform (ODP) server. Use the isQualifiedFor method to check if the user qualifies for the specified segment.

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Beta

Advanced Audience Targeting is currently in beta. Apply on the Optimizely beta signup page or contact your Customer Success Manager.

fetchQualifiedSegments

Minimum SDK Version

4.0.0

Description

You can use the fetchQualifiedSegments method to retrieve the external audience mapping for a specific user from the Optimizely Data Platform (ODP) server. The Optimizely Feature Experimentation Java SDK provides a synchronous and asynchronous version of the fetchQualifiedSegments method.

  • The caller will be blocked until the synchronous fetch has been completed.
  • The caller of asynchronous API will not be blocked.

fetchQualfiedSegments is a method of the UserContext object. See OptimizelyUserContext for details.

Parameters

The following table describes the parameters for the fetchQualifiedSegments method:

ParameterTypeDescription
options (optional)StringA set of options for fetching qualified segments from ODP.
completion (for asynchronous calls)Callback functionA completion handler to be called with the fetch result.

Returns - Synchronous call

The fetchQualifiedSegments synchronous method returns true if the qualified segments array in the user context was updated.

Returns - Asynchronous call

  • If the fetch completes successfully, the Java SDK updates the qualified segments array in the user context and then calls the completion handler with a success status.
  • If the fetch fails, the SDK calls the handler with a failure status.

If the Java SDK does not find an ODP audience in the datafile, it returns an empty qualified segments array without sending a request to the ODP server.

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Note

You can read and write directly to the qualified segments array instead of calling fetchQualifiedSegments.

This allows for bypassing the remote fetching process from Optimizely Data Platform ODP or for utilizing your own fetching service. This can be helpful when testing or debugging.

Example fetchQualifiedSegments call

The code creates a user context by instantiating an OptimizelyUserContext object with a user ID "user123" and a set of attributes which includes an "app_version" attribute with a value of "1.3.2".

The next section of the code shows the use of thefetchQualifiedSegments method to fetch all qualified segments with and without segment options.

After that, the code uses the decide method to make a decision on whether to show the feature flag with the key "flag1" to the user. Finally, the SDK calls the trackEvent method to track a custom event called "myevent".

Map<String, Object> attributes = new HashMap<>();
attributes.put("app_version", "1.3.2");
OptimizelyUserContext user = optimizely.createUserContext("user123", attributes);

// Without segment option 
Boolean response = user.fetchQualifiedSegments((Boolean isFetchSuccessful) -> {
  System.out.println(isFetchSuccessful);
            
  OptimizelyDecision decision = user.decide("flag1");
  user.trackEvent("purchase_event");
});

// With segment options
List<ODPSegmentOption> odpSegmentOptions = new ArrayList<>();
odpSegmentOptions.add(ODPSegmentOption.IGNORE_CACHE);
odpSegmentOptions.add(ODPSegmentOption.RESET_CACHE);

user.fetchQualifiedSegments((Boolean isFetchSuccessful) -> {
  System.out.println(isFetchSuccessful);
            
  OptimizelyDecision decision = user.decide("flag1");
  user.trackEvent("purchase_event");
}, odpSegmentOptions);
Map<String, Object> attributes = new HashMap<>();
attributes.put("app_version", "1.3.2");
OptimizelyUserContext user = optimizely.createUserContext("user123", attributes);

// Without segment options 
Boolean response = user.fetchQualifiedSegments();

// With segment options
List<ODPSegmentOption> odpSegmentOptions = new ArrayList<>();
odpSegmentOptions.add(ODPSegmentOption.IGNORE_CACHE);
odpSegmentOptions.add(ODPSegmentOption.RESET_CACHE);

Boolean response = user.fetchQualifiedSegments(odpSegmentOptions);

OptimizelyDecision decision = user.decide("flag1");
user.trackEvent("myevent");

The following diagram shows the network calls between your application, the Java SDK, and the ODP server when calling fetchQualifiedSegments:

Java SDK network call to ODP
  1. Call fetchQualifiedSegments method.
  2. Java SDK makes GraphQL call to ODP to fetch segments.
  3. ODP responds with segments.
  4. Fetched segments mapping user IDs to segments are cached, see below.
  5. Appropriate variations are returned for user.

The SDK catches any fetched segments. This means that if you request the same user segments again (when creating new user contexts), the SDK can retrieve the audience segment information from the cache rather than from the remote ODP server.

You can bypass caching using the following options with your odpSegmentOptions array:

  • IGNORE_CACHE – Bypass segments cache for lookup and save.
  • RESET_CACHE – Reset all segments cache.

isQualifiedFor

Minimum SDK Version

4.0.0

Description

Check if the user is qualified for the given audience segment.

Parameters

The following table describes the parameters for the isQualifiedFor method:

ParameterTypeDescription
segmentStringThe ODP audience segment name to check if the user is qualified for.

Returns

true if the user is qualified.

Examples

The following is an example of whether or not the user is qualified for an ODP segment:

Map<String, Object> attributes = new HashMap<>();
attributes.put("laptop_os", "mac");
OptimizelyUserContext user = optimizely.createUserContext("user123", attributes);

Boolean response = user.fetchQualifiedSegments();
Boolean isQualified = user.isQualifiedFor("segment1");

Source files

The language and platform source files containing the implementation for the Java SDK are available on GitHub.