From 2a8ba3141090f5f8ff866ff3410d8ebae6f20a50 Mon Sep 17 00:00:00 2001
From: Joshua Ramon Enslin <joshua@museum-digital.de>
Date: Tue, 11 May 2021 01:37:49 +0200
Subject: [PATCH] Import place hierarchy from Wikidata

Close #5
---
 src/NodaWikidataFetcher.php | 65 +++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)

diff --git a/src/NodaWikidataFetcher.php b/src/NodaWikidataFetcher.php
index e5f2803..9c7c0ec 100644
--- a/src/NodaWikidataFetcher.php
+++ b/src/NodaWikidataFetcher.php
@@ -910,6 +910,66 @@ final class NodaWikidataFetcher {
 
     }
 
+    /**
+     * Function for retrieving a superordinate place relation from Wikidata information
+     * for places
+     *
+     * @param integer      $onum Place ID.
+     * @param array<mixed> $data Wikidata information (P131 claim).
+     *
+     * @return void
+     */
+    public function retrieveSuperordinateAdministrativePlace(int $onum, array $data):void {
+
+        if (!empty($data[0]["mainsnak"]["datavalue"]["value"]["id"])) {
+
+            // Check if there already is a superordinate of the current place
+            $result = $this->_mysqli_noda->query_by_stmt("SELECT 1
+                FROM `ort_relation`
+                WHERE `ort_menor_id` = ?
+                LIMIT 1", "i", $onum);
+            if ($result->num_rows !== 0) {
+                $result->close();
+                $result = null;
+                return;
+            }
+            $result->close();
+            $result = null;
+
+            // If there is no superordinate, check if the identified superordinate
+            // is known in the noda DB.
+
+            $superordinateId = $data[0]["mainsnak"]["datavalue"]["value"]["id"];
+
+            $result = $this->_mysqli_noda->query_by_stmt("SELECT `ort_id`
+                FROM `noda_orte`
+                WHERE `noda_source` = 'wikidata'
+                AND `noda_nrinsource` = ?", "s", $superordinateId);
+
+            if (!($superordinateData = $result->fetch_row())) {
+                $result->close();
+                $result = null;
+                return;
+            }
+            $result->close();
+            $result = null;
+
+            $topPlaceId = $superordinateData[0];
+
+            // Enter superordinate place by Wikidata
+            $insertStmt = $this->_mysqli_noda->do_prepare("INSERT INTO `ort_relation`
+                (`ort_mayor_id`, `ort_menor_id`, `ort_relation`)
+                VALUES
+                (?, ?, 1)");
+            $insertStmt->bind_param("ii", $topPlaceId, $onum);
+            $insertStmt->execute();
+            $insertStmt->close();
+            $insertStmt = null;
+
+        }
+
+    }
+
     /**
      * Function for retrieving place information based on a Wikidata ID.
      *
@@ -941,6 +1001,11 @@ final class NodaWikidataFetcher {
 
         $alreadyEntered = false;
 
+        // P131: Located in administrative unit
+        if (isset($data['claims']['P131'])) {
+            $this->retrieveSuperordinateAdministrativePlace($onum, $data['claims']['P131']);
+        }
+
         if (!empty($wikilink[$lang])) {
 
             $datafromwiki = MD_STD::runCurl("https://" . urlencode($lang) . ".wikipedia.org/w/api.php?action=parse&page=" . urlencode($wikilinkterm[$lang]) . "&prop=text&section=0&format=json", 10000);