com.launchdarkly.client.Rule Maven / Gradle / Ivy

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package com.launchdarkly.client;

import java.util.List;

/**
 * Expresses a set of AND-ed matching conditions for a user, along with either the fixed variation or percent rollout
 * to serve if the conditions match.
 * Invariant: one of the variation or rollout must be non-nil.
 */
class Rule extends VariationOrRollout {
  private String id;
  private List clauses;
  private boolean trackEvents;
  
  private transient EvaluationReason.RuleMatch ruleMatchReason;

  // We need this so Gson doesn't complain in certain java environments that restrict unsafe allocation
  Rule() {
    super();
  }

  Rule(String id, List clauses, Integer variation, Rollout rollout, boolean trackEvents) {
    super(variation, rollout);
    this.id = id;
    this.clauses = clauses;
    this.trackEvents = trackEvents;
  }
  
  Rule(String id, List clauses, Integer variation, Rollout rollout) {
    this(id, clauses, variation, rollout, false);
  }

  String getId() {
    return id;
  }
  
  List getClauses() {
    return clauses;
  }
  
  boolean isTrackEvents() {
    return trackEvents;
  }
  
  // This value is precomputed when we deserialize a FeatureFlag from JSON
  EvaluationReason.RuleMatch getRuleMatchReason() {
    return ruleMatchReason;
  }

  void setRuleMatchReason(EvaluationReason.RuleMatch ruleMatchReason) {
    this.ruleMatchReason = ruleMatchReason;
  }

  boolean matchesUser(FeatureStore store, LDUser user) {
    for (Clause clause : clauses) {
      if (!clause.matchesUser(store, user)) {
        return false;
      }
    }
    return true;
  }
}