introduce Result class in Geocode and SearchDescription

lib/Result.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace Nominatim;
+
+/**
+ * A single result of a search operation or a reverse lookup.
+ *
+ * This object only contains the id of the result. It does not yet
+ * have any details needed to format the output document.
+ */
+class Result
+{
+    const TABLE_PLACEX = 0;
+    const TABLE_POSTCODE = 1;
+    const TABLE_OSMLINE = 2;
+    const TABLE_AUX = 3;
+    const TABLE_TIGER = 4;
+
+    /// Database table that contains the result.
+    public $iTable;
+    /// Id of the result.
+    public $iId;
+    /// House number (only for interpolation results).
+    public $iHouseNumber = -1;
+    /// Number of exact matches in address (address searches only).
+    public $iExactMatches = 0;
+    /// Subranking within the results (the higher the worse).
+    public $iResultRank = 0;
+
+
+    public function __construct($sId, $iTable = Result::TABLE_PLACEX)
+    {
+        $this->iTable = $iTable;
+        $this->iId = (int) $sId;
+    }
+
+    public static function joinIdsByTable($aResults, $iTable)
+    {
+        return join(',', array_keys(array_filter(
+            $aResults,
+            function ($aValue) use ($iTable) {
+                return $aValue->iTable == $iTable;
+            }
+        )));
+    }
+    public static function sqlHouseNumberTable($aResults, $iTable)
+    {
+        $sHousenumbers = '';
+        $sSep = '';
+        foreach ($aResults as $oResult) {
+            if ($oResult->iTable == $iTable) {
+                $sHousenumbers .= $sSep.'('.$oResult->iId.',';
+                $sHousenumbers .= $oResult->iHouseNumber.')';
+                $sSep = ',';
+            }
+        }
+
+        return $sHousenumbers;
+    }
+}