+ public function getId()
+ {
+ return $this->iId;
+ }
+
+ /**
+ * Check if the token can be added to the given search.
+ * Derive new searches by adding this token to an existing search.
+ *
+ * @param object $oSearch Partial search description derived so far.
+ * @param object $oPosition Description of the token position within
+ the query.
+ *
+ * @return True if the token is compatible with the search configuration
+ * given the position.
+ */
+ public function isExtendable($oSearch, $oPosition)
+ {
+ return !$oSearch->hasHousenumber()
+ && !$oSearch->hasOperator(\Nominatim\Operator::POSTCODE)
+ && $oPosition->maybePhrase('street');
+ }
+
+ /**
+ * Derive new searches by adding this token to an existing search.
+ *
+ * @param object $oSearch Partial search description derived so far.
+ * @param object $oPosition Description of the token position within
+ the query.
+ *
+ * @return SearchDescription[] List of derived search descriptions.
+ */
+ public function extendSearch($oSearch, $oPosition)
+ {
+ $aNewSearches = array();
+
+ // sanity check: if the housenumber is not mainly made
+ // up of numbers, add a penalty
+ $iSearchCost = 1;
+ if (preg_match('/\\d/', $this->sToken) === 0
+ || preg_match_all('/[^0-9 ]/', $this->sToken, $aMatches) > 3) {
+ $iSearchCost += strlen($this->sToken) - 1;
+ }
+ if (!$oSearch->hasOperator(\Nominatim\Operator::NONE)) {
+ $iSearchCost++;
+ }
+ if (empty($this->iId)) {
+ $iSearchCost++;
+ }
+ // also must not appear in the middle of the address
+ if ($oSearch->hasAddress() || $oSearch->hasPostcode()) {
+ $iSearchCost++;
+ }
+
+ $oNewSearch = $oSearch->clone($iSearchCost);
+ $oNewSearch->setHousenumber($this->sToken);
+ $aNewSearches[] = $oNewSearch;
+
+ // Housenumbers may appear in the name when the place has its own
+ // address terms.
+ if ($this->iId !== null
+ && ($oSearch->getNamePhrase() >= 0 || !$oSearch->hasName())
+ && !$oSearch->hasAddress()
+ ) {
+ $oNewSearch = $oSearch->clone($iSearchCost);
+ $oNewSearch->setHousenumberAsName($this->iId);
+
+ $aNewSearches[] = $oNewSearch;
+ }
+
+ return $aNewSearches;
+ }
+
+