com.launchdarkly.sdk.server

Interface EvaluatorInterface

public interface EvaluatorInterface

An Evaluator is able to calculate evaluation results for flags against the provided context.

Method Summary

Modifier and Type	Method and Description
FeatureFlagsState	allFlagsState(LDContext context, FlagsStateOption... options) Evaluates all flags.
com.launchdarkly.sdk.server.EvalResultAndFlag	evalAndFlag(java.lang.String method, java.lang.String flagKey, LDContext context, LDValue defaultValue, LDValueType requireType, com.launchdarkly.sdk.server.EvaluationOptions options) Evaluates the provided flag.

Method Detail

evalAndFlag

com.launchdarkly.sdk.server.EvalResultAndFlag evalAndFlag(java.lang.String method,
                                                          java.lang.String flagKey,
                                                          LDContext context,
                                                          LDValue defaultValue,
                                                          LDValueType requireType,
                                                          com.launchdarkly.sdk.server.EvaluationOptions options)

Evaluates the provided flag.

Parameters:

method - the top level customer facing method that led to this invocation

flagKey - of the flag that will be evaluated

context - to use during the evaluation

defaultValue - the value that will be returned in the result if an issue prevents the evaluator from successfully calculating an evaluation result.

requireType - that will be asserted against the evaluator's result. If the assertion fails, the default value is used in the returned result.

options - that are used to control more specific behavior of the evaluation

Returns:

the evaluation result and flag object

allFlagsState

FeatureFlagsState allFlagsState(LDContext context,
                                FlagsStateOption... options)

Evaluates all flags.

It is up to each implementation whether events will be logged during evaluation.

Parameters:

context - to use during the evaluation

options - optional FlagsStateOption values affecting how the state is computed

Returns:

a FeatureFlagsState object (will never be null; see FeatureFlagsState.isValid()