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The page "Storing_GeoData" has been deleted by JoanTouzet: https://wiki.apache.org/couchdb/Storing_GeoData?action=diff&rev1=2&rev2=3 Comment: geocouch is 1.x only, and better documented elsewhere - = Using CouchDB For Storing Google Geocoded JSON Data = - Google provides a free service that takes any string as an input and returns a bunch of JSON encoded data if that string matches a physical location. Check it out here: http://code.google.com/apis/maps/documentation/services.html#Geocoding - Unfortunately, Google's geocoding service is limited to 15k requests per day per IP. Sounds like a lot, but for certain applications this limit can be reached very quickly. - - The following small library can help you get around these limitations by storing a local repository of data in CouchDB. This is a nice fit because CouchDB is JSON-native and the data returned from google is JSON-native. - - The following is a rough and tumble library I put together called GeoCouch that you can use to easily handle geocoded data in CouchDB. This lib has a narrow scope right now - the requirements are: - - * PHP 5+ - * CouchDB - * A Google API Key (http://code.google.com/apis/maps/signup.html) - - Download the file here: http://geocouch.googlecode.com/files/geocouch.php. You can also find the full source at the bottom of the page. - - == Usage == - {{{ - <?php - require ('geocouch.php'); - - /* - * Don't forget to edit the $GeoCouch->conf parameters! - */ - $GeoCouch = new GeoCouch(); - - /* - * The all-in-one method. - * This geocodes the string and writes it to CouchDB - * The second parameter is any other fields other - * than the Google data that you want to save along - * with this document. - * - * NOTE: if this address already exists in CouchDB - * a new revision is created. - * - * Returns the CouchDB response, i.e.: - * {"ok" : true, "rev":"3825793742", "id" : "dallas-tx" } - */ - $GeoCouch->save('Dallas, TX', array('custom_field' => 'value')); - - /* - * Simply geo coding. - * Does not write to CouchDB. - * Returns an Google Geocoded Object. - */ - $geoObj = $GeoCouch->geoCode('Dallas, TX'); - - /* - * Write some Geo JSON to CouchDB. - * First parameter is a unique name for the data - * Second parameter is the JSON - in - * this case the json_encoded $geoObj from above. - */ - $GeoCouch->put('Dallas, TX', json_encode($geoObj)); - - /* - * Get some existing geo data - */ - $geoObj = $GeoCouch->get('Dallas, TX'); - ?> - }}} - - == GeoCouch Class == - {{{ - <?php - - class GeoCouch - { - var $conf = array( - 'host' => 'localhost', - 'port' => '5984', - 'db' => 'sf_geo', - 'geocoder' => array( - 'url' => 'http://maps.google.com/maps/geo?key=', - 'key' => 'Your Google API Key', - ), - ); - - var $address; - var $geoJSONResponse; - var $geoObj; - - function GeoCouch() { - - } - - function geoCode($address = null) - { - $this->address = $address; - $url = $this->conf['geocoder']['url'].$this->conf['geocoder']['key']; - $url .= '&q='.urlencode($address); - - $this->geoJSONResponse = $this->_geoCodeRequest($url); - $this->geoObj = json_decode($this->geoJSONResponse); - - if(empty($this->geoObj->Status->code) || $this->geoObj->Status->code != 200) { - return false; - } else { - return $this->geoJSONResponse; - } - } - - function _geoCodeRequest($url) - { - $ch = curl_init(); - curl_setopt ($ch, CURLOPT_URL, $url); - curl_setopt ($ch, CURLOPT_HEADER, 0); - ob_start(); - curl_exec ($ch); - curl_close ($ch); - $string = ob_get_contents(); - ob_end_clean(); - return $string; - } - - function locationName($str) { - return trim(preg_replace('/[^a-z0-9]+/i', '-', $str), '_'); - } - - function save($address, $extra = array()) - { - $existing = $this->get($address); - - if($this->geoCode($address)) - { - if(!empty($existing->_rev)) { - $this->geoObj->_rev = $existing->_rev; - } - - foreach($extra as $field => $value) { - $this->geoObj->$field = $value; - } - - return $this->put($address, json_encode($this->geoObj)); - } - else { - return false; - } - } - - function get($name = null) - { - $s = $this->openSock(); - - $url = '/'.$this->conf['db'].'/'.$this->locationName($name); - $request = 'GET '.$url.' HTTP/1.0'. "\r\n"; - $request .= 'Host: localhost'. "\r\n\r\n"; - fwrite($s, $request); - - return $this->parseCouchResponse($s); - } - - function put($name = null, $json = null) - { - $s = $this->openSock(); - - $url = '/'.$this->conf['db'].'/'.$this->locationName($name); - $request = 'PUT '.$url.' HTTP/1.0'. "\r\n"; - $request .= 'Host: localhost'. "\r\n"; - $request .= 'Content-Length: '.strlen($json)."\r\n\r\n"; - $request .= $json."\r\n"; - fwrite($s, $request); - - return $this->parseCouchResponse($s); - } - - function openSock() - { - $s = fsockopen($this->conf['host'], $this->conf['port'], $errno, $errstr); - if(!$s) { - return $errno.':'.$errstr; - } else { - return $s; - } - } - - function parseCouchResponse($s) - { - $response = ''; - while(!feof($s)) { - $response .= fgets($s); - } - fclose($s); - - list($headers, $body) = explode("\r\n\r\n", $response); - return json_decode($body); - } - } - ?> - }}} -
