Fix creation of reference ID on request with no attributes (CO-1690)

app/src/Controller/TierApiController.php

@@ -246,6 +246,12 @@ protected function doMatchRequest(bool $searchOnly=false) {
         // Perform a search, and insert or update if not Search Only
         $results = $MatchService->searchReferenceId($sor, $sorid, $AttributeManager);
 
+        // Did any rules run succesffully? If not (eg: no attributes provided in the
+        // request, no rules defined) then throw an error.
+        if(empty($results->getSuccessfulRules())) {
+          throw new \RuntimeException(__('match.er.rules.unsuccessful'));
+        }
+
         if($results->count() == 0) {
           // No match
 

app/src/Lib/Match/ResultManager.php

@@ -45,17 +45,24 @@ class ResultManager {
   // "canonical" or "potential"
   protected $confidenceMode = null;
   protected $attrconfig = [];
+  // We track which rules ran successfully as a way of validating the inbound request
+  protected $successfulRules = [];
 
   /**
    * Add a Matchgrid result.
    *
    * @since  COmanage Match v1.0.0
    * @param  string $referenceId Reference ID
    * @param  array  $attributes  Array of matchgrid attributes
+   * @param  string $rule        Rule that generated this result
    * @throws RuntimeException
    */
 
-  public function add(array $attributes) {
+  public function add(array $attributes, string $rule=null) {
+    if($rule) {
+      $successfulRules[] = $rule;
+    }
+
     if(empty($attributes)) {
       return;
     }
@@ -248,6 +255,18 @@ public function getResultsForJson($mode="search") {
     return $ret;
   }
 
+  /**
+   * Obtain an array of successfully executed rules as reported to the ResultManager.
+   * Note that successful rules may have generated no matches.
+   *
+   * @since  COmanage Match v1.0.0
+   * @return Array Reference IDs
+   */
+
+  public function getSuccessfulRules() {
+    return $this->successfulRules;
+  }
+
   /**
    * Set the Confidence Mode for this set of results.
    *