Merge branch 'master' of github.com:twain47/Nominatim

[nominatim.git] / lib / Geocode.php

diff --git a/lib/Geocode.php b/lib/Geocode.php
index 48518dd340e5ef1ed9083a1cd787023ba8fb6a26..e3fa25b690f63c86507522567a25f6b5a92503ec 100644 (file)
--- a/lib/Geocode.php
+++ b/lib/Geocode.php
@@ -20,6 +20,7 @@
                protected $iLimit = 20;
                protected $iFinalLimit = 10;
                protected $iOffset = 0;
+               protected $bFallback = false;
 
                protected $aCountryCodes = false;
                protected $aNearPoint = false;
@@ -118,6 +119,11 @@
                        $this->iOffset = $iOffset;
                }
 
+               function setFallback($bFallback = true)
+               {
+                       $this->bFallback = (bool)$bFallback;
+               }
+
                function setExcludedPlaceIDs($a)
                {
                        // TODO: force to int
@@ -214,6 +220,11 @@
                {
                        $this->sQuery = false;
 
+                       // Reset
+                       $this->iMinAddressRank = 0;
+                       $this->iMaxAddressRank = 30;
+                       $this->aAddressRankList = array();
+
                        $this->aStructuredQuery = array();
                        $this->sAllowedTypesSQLList = '';
 
@@ -233,7 +244,29 @@
                                        $sAllowedTypesSQLList = '(\'place\',\'boundary\')';
                                }
                        }
+               }
+
+               function fallbackStructuredQuery()
+               {
+                       if (!$this->aStructuredQuery) return false;
+
+                       $aParams = $this->aStructuredQuery;
+
+                       if (sizeof($aParams) == 1) return false;
+
+                       $aOrderToFallback = array('postalcode', 'street', 'city', 'county', 'state');
+
+                       foreach($aOrderToFallback as $sType)
+                       {
+                               if (isset($aParams[$sType]))
+                               {
+                                       unset($aParams[$sType]);
+                                       $this->setStructuredQuery(@$aParams['amenity'], @$aParams['street'], @$aParams['city'], @$aParams['county'], @$aParams['state'], @$aParams['country'], @$aParams['postalcode']);
+                                       return true;
+                               }
+                       }
 
+                       return false;
                }
 
                function getDetails($aPlaceIDs)
@@ -1410,6 +1443,14 @@
                        // No results? Done
                        if (!sizeof($aSearchResults))
                        {
+                               if ($this->bFallback)
+                               {
+                                       if ($this->fallbackStructuredQuery())
+                                       {
+                                               return $this->lookup();
+                                       }
+                               }
+
                                return array();
                        }