lib/PlaceLookup.php

   1 <?php
   2
   3 namespace Nominatim;
   4
   5 require_once(CONST_BasePath.'/lib/Result.php');
   6
   7 class PlaceLookup
   8 {
   9     protected $oDB;
  10
  11     protected $aLangPrefOrderSql = "''";
  12
  13     protected $bAddressDetails = false;
  14     protected $bExtraTags = false;
  15     protected $bNameDetails = false;
  16
  17     protected $bIncludePolygonAsPoints = false;
  18     protected $bIncludePolygonAsText = false;
  19     protected $bIncludePolygonAsGeoJSON = false;
  20     protected $bIncludePolygonAsKML = false;
  21     protected $bIncludePolygonAsSVG = false;
  22     protected $fPolygonSimplificationThreshold = 0.0;
  23
  24     protected $sAnchorSql = null;
  25     protected $sAddressRankListSql = null;
  26     protected $sAllowedTypesSQLList = null;
  27     protected $bDeDupe = true;
  28
  29
  30     public function __construct(&$oDB)
  31     {
  32         $this->oDB =& $oDB;
  33     }
  34
  35     public function setAnchorSql($sPoint)
  36     {
  37         $this->sAnchorSql = $sPoint;
  38     }
  39
  40     public function setDeDupe($bDeDupe)
  41     {
  42         $this->bDeDupe = $bDeDupe;
  43     }
  44
  45     public function setAddressRankList($aList)
  46     {
  47         $this->sAddressRankListSql = '('.join(',', $aList).')';
  48     }
  49
  50     public function setAllowedTypesSQLList($sSql)
  51     {
  52         $this->sAllowedTypesSQLList = $sSql;
  53     }
  54
  55     public function setLanguagePreference($aLangPrefOrder)
  56     {
  57         $this->aLangPrefOrderSql =
  58             'ARRAY['.join(',', array_map('getDBQuoted', $aLangPrefOrder)).']';
  59     }
  60
  61     public function setIncludeAddressDetails($bAddressDetails = true)
  62     {
  63         $this->bAddressDetails = $bAddressDetails;
  64     }
  65
  66     public function setIncludeExtraTags($bExtraTags = false)
  67     {
  68         $this->bExtraTags = $bExtraTags;
  69     }
  70
  71     public function setIncludeNameDetails($bNameDetails = false)
  72     {
  73         $this->bNameDetails = $bNameDetails;
  74     }
  75
  76     public function setIncludePolygonAsPoints($b = true)
  77     {
  78         $this->bIncludePolygonAsPoints = $b;
  79     }
  80
  81     public function setIncludePolygonAsText($b = true)
  82     {
  83         $this->bIncludePolygonAsText = $b;
  84     }
  85
  86     public function setIncludePolygonAsGeoJSON($b = true)
  87     {
  88         $this->bIncludePolygonAsGeoJSON = $b;
  89     }
  90
  91     public function setIncludePolygonAsKML($b = true)
  92     {
  93         $this->bIncludePolygonAsKML = $b;
  94     }
  95
  96     public function setIncludePolygonAsSVG($b = true)
  97     {
  98         $this->bIncludePolygonAsSVG = $b;
  99     }
 100
 101     public function setPolygonSimplificationThreshold($f)
 102     {
 103         $this->fPolygonSimplificationThreshold = $f;
 104     }
 105
 106     private function addressImportanceSql($sGeometry, $sPlaceId)
 107     {
 108         if ($this->sAnchorSql) {
 109             $sSQL = 'ST_Distance('.$this->sAnchorSql.','.$sGeometry.')';
 110         } else {
 111             $sSQL = '(SELECT max(ai_p.importance * (ai_p.rank_address + 2))';
 112             $sSQL .= '   FROM place_addressline ai_s, placex ai_p';
 113             $sSQL .= '   WHERE ai_s.place_id = '.$sPlaceId;
 114             $sSQL .= '     AND ai_p.place_id = ai_s.address_place_id ';
 115             $sSQL .= '     AND ai_s.isaddress ';
 116             $sSQL .= '     AND ai_p.importance is not null)';
 117         }
 118
 119         return $sSQL.' AS addressimportance,';
 120     }
 121
 122     private function langAddressSql($sHousenumber)
 123     {
 124         return 'get_address_by_language(place_id,'.$sHousenumber.','.$this->aLangPrefOrderSql.') AS langaddress,';
 125     }
 126
 127     public function lookupOSMID($sType, $iID)
 128     {
 129         $sSQL = "select place_id from placex where osm_type = '".$sType."' and osm_id = ".$iID;
 130         $iPlaceID = chksql($this->oDB->getOne($sSQL));
 131
 132         if (!$iPlaceID) {
 133             return null;
 134         }
 135
 136         $aResults = $this->lookup(array($iPlaceID => new Result($iPlaceID)));
 137
 138         return sizeof($aResults) ? reset($aResults) : null;
 139     }
 140
 141     public function lookup($aResults, $iMinRank = 0, $iMaxRank = 30)
 142     {
 143         if (!sizeof($aResults)) {
 144             return array();
 145         }
 146         $aSubSelects = array();
 147
 148         $sPlaceIDs = Result::joinIdsByTable($aResults, Result::TABLE_PLACEX);
 149         if (CONST_Debug) var_dump('PLACEX', $sPlaceIDs);
 150         if ($sPlaceIDs) {
 151             $sSQL  = 'SELECT ';
 152             $sSQL .= '    osm_type,';
 153             $sSQL .= '    osm_id,';
 154             $sSQL .= '    class,';
 155             $sSQL .= '    type,';
 156             $sSQL .= '    admin_level,';
 157             $sSQL .= '    rank_search,';
 158             $sSQL .= '    rank_address,';
 159             $sSQL .= '    min(place_id) AS place_id,';
 160             $sSQL .= '    min(parent_place_id) AS parent_place_id,';
 161             $sSQL .= '    housenumber,';
 162             $sSQL .= '    country_code,';
 163             $sSQL .= $this->langAddressSql('-1');
 164             $sSQL .= '    get_name_by_language(name,'.$this->aLangPrefOrderSql.') AS placename,';
 165             $sSQL .= "    get_name_by_language(name, ARRAY['ref']) AS ref,";
 166             if ($this->bExtraTags) {
 167                 $sSQL .= 'hstore_to_json(extratags)::text AS extra,';
 168             }
 169             if ($this->bNameDetails) {
 170                 $sSQL .= 'hstore_to_json(name)::text AS names,';
 171             }
 172             $sSQL .= '    avg(ST_X(centroid)) AS lon, ';
 173             $sSQL .= '    avg(ST_Y(centroid)) AS lat, ';
 174             $sSQL .= '    COALESCE(importance,0.75-(rank_search::float/40)) AS importance, ';
 175             $sSQL .= $this->addressImportanceSql(
 176                 'centroid',
 177                 'min(CASE WHEN placex.rank_search < 28 THEN placex.place_id ELSE placex.parent_place_id END)'
 178             );
 179             $sSQL .= "    (extratags->'place') AS extra_place ";
 180             $sSQL .= ' FROM placex';
 181             $sSQL .= " WHERE place_id in ($sPlaceIDs) ";
 182             $sSQL .= '   AND (';
 183             $sSQL .= "        placex.rank_address between $iMinRank and $iMaxRank ";
 184             if (14 >= $iMinRank && 14 <= $iMaxRank) {
 185                 $sSQL .= "    OR (extratags->'place') = 'city'";
 186             }
 187             if ($this->sAddressRankListSql) {
 188                 $sSQL .= '    OR placex.rank_address in '.$this->sAddressRankListSql;
 189             }
 190             $sSQL .= "       ) ";
 191             if ($this->sAllowedTypesSQLList) {
 192                 $sSQL .= 'AND placex.class in '.$this->sAllowedTypesSQLList;
 193             }
 194             $sSQL .= '    AND linked_place_id is null ';
 195             $sSQL .= ' GROUP BY ';
 196             $sSQL .= '     osm_type, ';
 197             $sSQL .= '     osm_id, ';
 198             $sSQL .= '     class, ';
 199             $sSQL .= '     type, ';
 200             $sSQL .= '     admin_level, ';
 201             $sSQL .= '     rank_search, ';
 202             $sSQL .= '     rank_address, ';
 203             $sSQL .= '     housenumber,';
 204             $sSQL .= '     country_code, ';
 205             $sSQL .= '     importance, ';
 206             if (!$this->bDeDupe) $sSQL .= 'place_id,';
 207             $sSQL .= '     langaddress, ';
 208             $sSQL .= '     placename, ';
 209             $sSQL .= '     ref, ';
 210             if ($this->bExtraTags) $sSQL .= 'extratags, ';
 211             if ($this->bNameDetails) $sSQL .= 'name, ';
 212             $sSQL .= "     extratags->'place' ";
 213
 214             $aSubSelects[] = $sSQL;
 215         }
 216
 217         // postcode table
 218         $sPlaceIDs = Result::joinIdsByTable($aResults, Result::TABLE_POSTCODE);
 219         if ($sPlaceIDs) {
 220             $sSQL = 'SELECT';
 221             $sSQL .= "  'P' as osm_type,";
 222             $sSQL .= "  (SELECT osm_id from placex p WHERE p.place_id = lp.parent_place_id) as osm_id,";
 223             $sSQL .= "  'place' as class, 'postcode' as type,";
 224             $sSQL .= '  null as admin_level, rank_search, rank_address,';
 225             $sSQL .= '  place_id, parent_place_id,';
 226             $sSQL .= '  null as housenumber,';
 227             $sSQL .= '  country_code,';
 228             $sSQL .= $this->langAddressSql('-1');
 229             $sSQL .= "  postcode as placename,";
 230             $sSQL .= "  postcode as ref,";
 231             if ($this->bExtraTags) $sSQL .= "null AS extra,";
 232             if ($this->bNameDetails) $sSQL .= "null AS names,";
 233             $sSQL .= "  ST_x(geometry) AS lon, ST_y(geometry) AS lat,";
 234             $sSQL .= "  (0.75-(rank_search::float/40)) AS importance, ";
 235             $sSQL .= $this->addressImportanceSql('geometry', 'lp.parent_place_id');
 236             $sSQL .= "  null AS extra_place ";
 237             $sSQL .= "FROM location_postcode lp";
 238             $sSQL .= " WHERE place_id in ($sPlaceIDs) ";
 239             $sSQL .= "   AND lp.rank_address between $iMinRank and $iMaxRank";
 240
 241             $aSubSelects[] = $sSQL;
 242         }
 243
 244         // All other tables are rank 30 only.
 245         if ($iMaxRank == 30) {
 246             // TIGER table
 247             if (CONST_Use_US_Tiger_Data) {
 248                 $sPlaceIDs = Result::joinIdsByTable($aResults, Result::TABLE_TIGER);
 249                 if ($sPlaceIDs) {
 250                     $sHousenumbers = Result::sqlHouseNumberTable($aResults, Result::TABLE_TIGER);
 251                     // Tiger search only if a housenumber was searched and if it was found
 252                     // (realized through a join)
 253                     $sSQL = " SELECT ";
 254                     $sSQL .= "     'T' AS osm_type, ";
 255                     $sSQL .= "     (SELECT osm_id from placex p WHERE p.place_id=blub.parent_place_id) as osm_id, ";
 256                     $sSQL .= "     'place' AS class, ";
 257                     $sSQL .= "     'house' AS type, ";
 258                     $sSQL .= '     null AS admin_level, ';
 259                     $sSQL .= '     30 AS rank_search, ';
 260                     $sSQL .= '     30 AS rank_address, ';
 261                     $sSQL .= '     place_id, ';
 262                     $sSQL .= '     parent_place_id, ';
 263                     $sSQL .= '     housenumber_for_place as housenumber,';
 264                     $sSQL .= "     'us' AS country_code, ";
 265                     $sSQL .= $this->langAddressSql('housenumber_for_place');
 266                     $sSQL .= "     null AS placename, ";
 267                     $sSQL .= "     null AS ref, ";
 268                     if ($this->bExtraTags) $sSQL .= "null AS extra,";
 269                     if ($this->bNameDetails) $sSQL .= "null AS names,";
 270                     $sSQL .= "     st_x(centroid) AS lon, ";
 271                     $sSQL .= "     st_y(centroid) AS lat,";
 272                     $sSQL .= "     -1.15 AS importance, ";
 273                     $sSQL .= $this->addressImportanceSql('centroid', 'blub.parent_place_id');
 274                     $sSQL .= "     null AS extra_place ";
 275                     $sSQL .= " FROM (";
 276                     $sSQL .= "     SELECT place_id, ";    // interpolate the Tiger housenumbers here
 277                     $sSQL .= "         ST_LineInterpolatePoint(linegeo, (housenumber_for_place-startnumber::float)/(endnumber-startnumber)::float) AS centroid, ";
 278                     $sSQL .= "         parent_place_id, ";
 279                     $sSQL .= "         housenumber_for_place";
 280                     $sSQL .= "     FROM (";
 281                     $sSQL .= "            location_property_tiger ";
 282                     $sSQL .= "            JOIN (values ".$sHousenumbers.") AS housenumbers(place_id, housenumber_for_place) USING(place_id)) ";
 283                     $sSQL .= "     WHERE ";
 284                     $sSQL .= "         housenumber_for_place >= startnumber";
 285                     $sSQL .= "         AND housenumber_for_place <= endnumber";
 286                     $sSQL .= " ) AS blub"; //postgres wants an alias here
 287
 288                     $aSubSelects[] = $sSQL;
 289                 }
 290             }
 291
 292             // osmline - interpolated housenumbers
 293             $sPlaceIDs = Result::joinIdsByTable($aResults, Result::TABLE_OSMLINE);
 294             if ($sPlaceIDs) {
 295                 $sHousenumbers = Result::sqlHouseNumberTable($aResults, Result::TABLE_OSMLINE);
 296                 // interpolation line search only if a housenumber was searched
 297                 // (realized through a join)
 298                 $sSQL = "SELECT ";
 299                 $sSQL .= "  'W' AS osm_type, ";
 300                 $sSQL .= "  osm_id, ";
 301                 $sSQL .= "  'place' AS class, ";
 302                 $sSQL .= "  'house' AS type, ";
 303                 $sSQL .= '  15 AS admin_level, ';
 304                 $sSQL .= '  30 AS rank_search, ';
 305                 $sSQL .= '  30 AS rank_address, ';
 306                 $sSQL .= '  place_id, ';
 307                 $sSQL .= '  parent_place_id, ';
 308                 $sSQL .= '  housenumber_for_place as housenumber,';
 309                 $sSQL .= '  country_code, ';
 310                 $sSQL .= $this->langAddressSql('housenumber_for_place');
 311                 $sSQL .= '  null AS placename, ';
 312                 $sSQL .= '  null AS ref, ';
 313                 if ($this->bExtraTags) $sSQL .= 'null AS extra, ';
 314                 if ($this->bNameDetails) $sSQL .= 'null AS names, ';
 315                 $sSQL .= '  st_x(centroid) AS lon, ';
 316                 $sSQL .= '  st_y(centroid) AS lat, ';
 317                 // slightly smaller than the importance for normal houses
 318                 $sSQL .= "  -0.1 AS importance, ";
 319                 $sSQL .= $this->addressImportanceSql('centroid', 'blub.parent_place_id');
 320                 $sSQL .= "  null AS extra_place ";
 321                 $sSQL .= "  FROM (";
 322                 $sSQL .= "     SELECT ";
 323                 $sSQL .= "         osm_id, ";
 324                 $sSQL .= "         place_id, ";
 325                 $sSQL .= "         country_code, ";
 326                 $sSQL .= "         CASE ";             // interpolate the housenumbers here
 327                 $sSQL .= "           WHEN startnumber != endnumber ";
 328                 $sSQL .= "           THEN ST_LineInterpolatePoint(linegeo, (housenumber_for_place-startnumber::float)/(endnumber-startnumber)::float) ";
 329                 $sSQL .= "           ELSE ST_LineInterpolatePoint(linegeo, 0.5) ";
 330                 $sSQL .= "         END as centroid, ";
 331                 $sSQL .= "         parent_place_id, ";
 332                 $sSQL .= "         housenumber_for_place ";
 333                 $sSQL .= "     FROM (";
 334                 $sSQL .= "            location_property_osmline ";
 335                 $sSQL .= "            JOIN (values ".$sHousenumbers.") AS housenumbers(place_id, housenumber_for_place) USING(place_id)";
 336                 $sSQL .= "          ) ";
 337                 $sSQL .= "     WHERE housenumber_for_place >= 0 ";
 338                 $sSQL .= "  ) as blub"; //postgres wants an alias here
 339
 340                 $aSubSelects[] = $sSQL;
 341             }
 342
 343             if (CONST_Use_Aux_Location_data) {
 344                 $sPlaceIDs = Result::joinIdsByTable($aResults, Result::TABLE_AUX);
 345                 if ($sPlaceIDs) {
 346                     $sHousenumbers = Result::sqlHouseNumberTable($aResults, Result::TABLE_AUX);
 347                     $sSQL = "  SELECT ";
 348                     $sSQL .= "     'L' AS osm_type, ";
 349                     $sSQL .= "     place_id AS osm_id, ";
 350                     $sSQL .= "     'place' AS class,";
 351                     $sSQL .= "     'house' AS type, ";
 352                     $sSQL .= '     null AS admin_level, ';
 353                     $sSQL .= '     30 AS rank_search,';
 354                     $sSQL .= '     30 AS rank_address, ';
 355                     $sSQL .= '     place_id,';
 356                     $sSQL .= '     parent_place_id, ';
 357                     $sSQL .= '     housenumber,';
 358                     $sSQL .= "     'us' AS country_code, ";
 359                     $sSQL .= $this->langAddressSql('-1');
 360                     $sSQL .= "     null AS placename, ";
 361                     $sSQL .= "     null AS ref, ";
 362                     if ($this->bExtraTags) $sSQL .= "null AS extra, ";
 363                     if ($this->bNameDetails) $sSQL .= "null AS names, ";
 364                     $sSQL .= "     ST_X(centroid) AS lon, ";
 365                     $sSQL .= "     ST_Y(centroid) AS lat, ";
 366                     $sSQL .= "     -1.10 AS importance, ";
 367                     $sSQL .= $this->addressImportanceSql(
 368                         'centroid',
 369                         'location_property_aux.parent_place_id'
 370                     );
 371                     $sSQL .= "     null AS extra_place ";
 372                     $sSQL .= "  FROM location_property_aux ";
 373                     $sSQL .= "  WHERE place_id in ($sPlaceIDs) ";
 374
 375                     $aSubSelects[] = $sSQL;
 376                 }
 377             }
 378         }
 379
 380         if (CONST_Debug) var_dump($aSubSelects);
 381
 382         if (!sizeof($aSubSelects)) {
 383             return array();
 384         }
 385
 386         $aPlaces = chksql(
 387             $this->oDB->getAll(join(' UNION ', $aSubSelects)),
 388             "Could not lookup place"
 389         );
 390
 391         foreach ($aPlaces as &$aPlace) {
 392             if ($this->bAddressDetails) {
 393                 // to get addressdetails for tiger data, the housenumber is needed
 394                 $aPlace['aAddress'] = $this->getAddressNames(
 395                     $aPlace['place_id'],
 396                     $aPlace['housenumber']
 397                 );
 398             }
 399
 400             if ($this->bExtraTags) {
 401                 if ($aPlace['extra']) {
 402                     $aPlace['sExtraTags'] = json_decode($aPlace['extra']);
 403                 } else {
 404                     $aPlace['sExtraTags'] = (object) array();
 405                 }
 406             }
 407
 408             if ($this->bNameDetails) {
 409                 if ($aPlace['names']) {
 410                     $aPlace['sNameDetails'] = json_decode($aPlace['names']);
 411                 } else {
 412                     $aPlace['sNameDetails'] = (object) array();
 413                 }
 414             }
 415
 416             $aClassType = getClassTypes();
 417             $sAddressType = '';
 418             $sClassType = $aPlace['class'].':'.$aPlace['type'].':'.$aPlace['admin_level'];
 419             if (isset($aClassType[$sClassType]) && isset($aClassType[$sClassType]['simplelabel'])) {
 420                 $sAddressType = $aClassType[$aClassType]['simplelabel'];
 421             } else {
 422                 $sClassType = $aPlace['class'].':'.$aPlace['type'];
 423                 if (isset($aClassType[$sClassType]) && isset($aClassType[$sClassType]['simplelabel']))
 424                     $sAddressType = $aClassType[$sClassType]['simplelabel'];
 425                 else $sAddressType = $aPlace['class'];
 426             }
 427
 428             $aPlace['addresstype'] = $sAddressType;
 429         }
 430
 431         if (CONST_Debug) var_dump($aPlaces);
 432
 433         return $aPlaces;
 434     }
 435
 436     private function getAddressDetails($iPlaceID, $bAll, $sHousenumber)
 437     {
 438         $sSQL = 'SELECT *,';
 439         $sSQL .= '  get_name_by_language(name,'.$this->aLangPrefOrderSql.') as localname';
 440         $sSQL .= ' FROM get_addressdata('.$iPlaceID.','.$sHousenumber.')';
 441         if (!$bAll) {
 442             $sSQL .= " WHERE isaddress OR type = 'country_code'";
 443         }
 444         $sSQL .= ' ORDER BY rank_address desc,isaddress DESC';
 445
 446         return chksql($this->oDB->getAll($sSQL));
 447     }
 448
 449     public function getAddressNames($iPlaceID, $sHousenumber = null)
 450     {
 451         $aAddressLines = $this->getAddressDetails(
 452             $iPlaceID,
 453             false,
 454             $sHousenumber === null ? -1 : $sHousenumber
 455         );
 456
 457         $aAddress = array();
 458         $aFallback = array();
 459         $aClassType = getClassTypes();
 460         foreach ($aAddressLines as $aLine) {
 461             $bFallback = false;
 462             $aTypeLabel = false;
 463             if (isset($aClassType[$aLine['class'].':'.$aLine['type'].':'.$aLine['admin_level']])) {
 464                 $aTypeLabel = $aClassType[$aLine['class'].':'.$aLine['type'].':'.$aLine['admin_level']];
 465             } elseif (isset($aClassType[$aLine['class'].':'.$aLine['type']])) {
 466                 $aTypeLabel = $aClassType[$aLine['class'].':'.$aLine['type']];
 467             } elseif (isset($aClassType['boundary:administrative:'.((int)($aLine['rank_address']/2))])) {
 468                 $aTypeLabel = $aClassType['boundary:administrative:'.((int)($aLine['rank_address']/2))];
 469                 $bFallback = true;
 470             } else {
 471                 $aTypeLabel = array('simplelabel' => 'address'.$aLine['rank_address']);
 472                 $bFallback = true;
 473             }
 474             if ($aTypeLabel && ((isset($aLine['localname']) && $aLine['localname']) || (isset($aLine['housenumber']) && $aLine['housenumber']))) {
 475                 $sTypeLabel = strtolower(isset($aTypeLabel['simplelabel'])?$aTypeLabel['simplelabel']:$aTypeLabel['label']);
 476                 $sTypeLabel = str_replace(' ', '_', $sTypeLabel);
 477                 if (!isset($aAddress[$sTypeLabel]) || (isset($aFallback[$sTypeLabel]) && $aFallback[$sTypeLabel]) || $aLine['class'] == 'place') {
 478                     $aAddress[$sTypeLabel] = $aLine['localname']?$aLine['localname']:$aLine['housenumber'];
 479                 }
 480                 $aFallback[$sTypeLabel] = $bFallback;
 481             }
 482         }
 483         return $aAddress;
 484     }
 485
 486
 487
 488     /* returns an array which will contain the keys
 489      *   aBoundingBox
 490      * and may also contain one or more of the keys
 491      *   asgeojson
 492      *   askml
 493      *   assvg
 494      *   astext
 495      *   lat
 496      *   lon
 497      */
 498
 499
 500     public function getOutlines($iPlaceID, $fLon = null, $fLat = null, $fRadius = null)
 501     {
 502
 503         $aOutlineResult = array();
 504         if (!$iPlaceID) return $aOutlineResult;
 505
 506         if (CONST_Search_AreaPolygons) {
 507             // Get the bounding box and outline polygon
 508             $sSQL  = "select place_id,0 as numfeatures,st_area(geometry) as area,";
 509             $sSQL .= "ST_Y(centroid) as centrelat,ST_X(centroid) as centrelon,";
 510             $sSQL .= "ST_YMin(geometry) as minlat,ST_YMax(geometry) as maxlat,";
 511             $sSQL .= "ST_XMin(geometry) as minlon,ST_XMax(geometry) as maxlon";
 512             if ($this->bIncludePolygonAsGeoJSON) $sSQL .= ",ST_AsGeoJSON(geometry) as asgeojson";
 513             if ($this->bIncludePolygonAsKML) $sSQL .= ",ST_AsKML(geometry) as askml";
 514             if ($this->bIncludePolygonAsSVG) $sSQL .= ",ST_AsSVG(geometry) as assvg";
 515             if ($this->bIncludePolygonAsText || $this->bIncludePolygonAsPoints) $sSQL .= ",ST_AsText(geometry) as astext";
 516             $sFrom = " from placex where place_id = ".$iPlaceID;
 517             if ($this->fPolygonSimplificationThreshold > 0) {
 518                 $sSQL .= " from (select place_id,centroid,ST_SimplifyPreserveTopology(geometry,".$this->fPolygonSimplificationThreshold.") as geometry".$sFrom.") as plx";
 519             } else {
 520                 $sSQL .= $sFrom;
 521             }
 522
 523             $aPointPolygon = chksql($this->oDB->getRow($sSQL), "Could not get outline");
 524
 525             if ($aPointPolygon['place_id']) {
 526                 if ($aPointPolygon['centrelon'] !== null && $aPointPolygon['centrelat'] !== null) {
 527                     $aOutlineResult['lat'] = $aPointPolygon['centrelat'];
 528                     $aOutlineResult['lon'] = $aPointPolygon['centrelon'];
 529                 }
 530
 531                 if ($this->bIncludePolygonAsGeoJSON) $aOutlineResult['asgeojson'] = $aPointPolygon['asgeojson'];
 532                 if ($this->bIncludePolygonAsKML) $aOutlineResult['askml'] = $aPointPolygon['askml'];
 533                 if ($this->bIncludePolygonAsSVG) $aOutlineResult['assvg'] = $aPointPolygon['assvg'];
 534                 if ($this->bIncludePolygonAsText) $aOutlineResult['astext'] = $aPointPolygon['astext'];
 535                 if ($this->bIncludePolygonAsPoints) $aOutlineResult['aPolyPoints'] = geometryText2Points($aPointPolygon['astext'], $fRadius);
 536
 537
 538                 if (abs($aPointPolygon['minlat'] - $aPointPolygon['maxlat']) < 0.0000001) {
 539                     $aPointPolygon['minlat'] = $aPointPolygon['minlat'] - $fRadius;
 540                     $aPointPolygon['maxlat'] = $aPointPolygon['maxlat'] + $fRadius;
 541                 }
 542
 543                 if (abs($aPointPolygon['minlon'] - $aPointPolygon['maxlon']) < 0.0000001) {
 544                     $aPointPolygon['minlon'] = $aPointPolygon['minlon'] - $fRadius;
 545                     $aPointPolygon['maxlon'] = $aPointPolygon['maxlon'] + $fRadius;
 546                 }
 547
 548                 $aOutlineResult['aBoundingBox'] = array(
 549                                                    (string)$aPointPolygon['minlat'],
 550                                                    (string)$aPointPolygon['maxlat'],
 551                                                    (string)$aPointPolygon['minlon'],
 552                                                    (string)$aPointPolygon['maxlon']
 553                                                   );
 554             }
 555         }
 556
 557         // as a fallback we generate a bounding box without knowing the size of the geometry
 558         if ((!isset($aOutlineResult['aBoundingBox'])) && isset($fLon)) {
 559             //
 560             if ($this->bIncludePolygonAsPoints) {
 561                 $sGeometryText = 'POINT('.$fLon.','.$fLat.')';
 562                 $aOutlineResult['aPolyPoints'] = geometryText2Points($sGeometryText, $fRadius);
 563             }
 564
 565             $aBounds = array();
 566             $aBounds['minlat'] = $fLat - $fRadius;
 567             $aBounds['maxlat'] = $fLat + $fRadius;
 568             $aBounds['minlon'] = $fLon - $fRadius;
 569             $aBounds['maxlon'] = $fLon + $fRadius;
 570
 571             $aOutlineResult['aBoundingBox'] = array(
 572                                                (string)$aBounds['minlat'],
 573                                                (string)$aBounds['maxlat'],
 574                                                (string)$aBounds['minlon'],
 575                                                (string)$aBounds['maxlon']
 576                                               );
 577         }
 578         return $aOutlineResult;
 579     }
 580 }