baseURL = $base; $this->cache_expire = $expiry; } /** * Sets the Query string parameters to send a request. * @param array $params An array passed with necessary parameters. */ function setQueryString($params=NULL){ $this->queryString = http_build_query($params,'','&'); } protected function constructURL(){ return "$this->baseURL?$this->queryString"; } /** * Connects to the RESTful service and gets its response. * TODO implement authentication via cURL for */ function connect(){ $url = $this->constructURL(); //url for the request //check for file exists in cache //set the cache directory $cachedir=TEMP_FOLDER; //default silverstrip-cache $cache_file = md5($url); //encoded name of cache file $cache_path = $cachedir."/$cache_file"; if(( @file_exists("$cache_path") && ((@filemtime($cache_path) + $this->cache_expire) > ( time() )))){ $this->rawXML = file_get_contents($cache_path); } else {//not available in cache fetch from server $ch = curl_init(); $timeout = 5; $useragent = "SilverStripe/2.2"; curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_USERAGENT, $useragent); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout); $this->rawXML = curl_exec($ch); curl_close($ch); } //Try using file_get_contents if cURL is not installed in your system. //$this->rawXML = file_get_contents($url); //results returned - from cache / live if($this->rawXML != ""){ //save the response in cache $fp = @fopen($cache_path,"w+"); @fwrite($fp,$this->rawXML); @fclose($fp); if($this->checkErrors == true) { return $this->errorCatch($this->rawXML); } else { return $this->rawXML; } } else { user_error("Invalid Response (maybe your calling to wrong URL or server unavailable)", E_USER_ERROR); } } /** * Gets attributes as an array, of a particular type of element. * Example : * returns id, owner,secret and sever attribute values of all such photo elements. * @param string $xml The source xml to parse, this could be the original response received. * @param string $collection The name of parent node which wraps the elements, if available * @param string $element The element we need to extract the attributes. */ function getAttributes($xml, $collection=NULL, $element=NULL){ $xml = new SimpleXMLElement($xml); $output = new DataObjectSet(); if($collection) $childElements = $xml->{$collection}; if($element) $childElements = $xml->{$collection}->{$element}; if($childElements){ foreach($childElements as $child){ $data = array(); foreach($child->attributes() as $key => $value){ $data["$key"] = Convert::raw2xml($value); } $output->push(new ArrayData($data)); } } return $output; } /** * Gets an attribute of a particular element. * @param string $xml The source xml to parse, this could be the original response received. * @param string $collection The name of the parent node which wraps the element, if available * @param string $element The element we need to extract the attribute * @param string $attr The name of the attribute */ function getAttribute($xml, $collection=NULL, $element=NULL, $attr){ $xml = new SimpleXMLElement($xml); $attr_value = ""; if($collection) $childElements = $xml->{$collection}; if($element) $childElements = $xml->{$collection}->{$element}; if($childElements) $attr_value = (string) $childElements[$attr]; return Convert::raw2xml($attr_value); } /** * Gets set of node values as an array. * When you get to the depth in the hierachchy use node_child_subchild syntax to get the value. * @param string $xml The the source xml to parse, this could be the original response received. * @param string $collection The name of parent node which wraps the elements, if available * @param string $element The element we need to extract the node values. */ function getValues($xml, $collection=NULL, $element=NULL){ $xml = new SimpleXMLElement($xml); $output = new DataObjectSet(); $childElements = $xml; if($collection) $childElements = $xml->{$collection}; if($element) $childElements = $xml->{$collection}->{$element}; if($childElements){ foreach($childElements as $child){ $data = array(); $this->getRecurseValues($child,$data); $output->push(new ArrayData($data)); } } return $output; } protected function getRecurseValues($xml,&$data,$parent=""){ $conv_value = ""; $child_count = 0; foreach($xml as $key=>$value) { $child_count++; $k = ($parent == "") ? (string)$key : $parent . "_" . (string)$key; if($this->getRecurseValues($value,$data,$k) == 0){ // no childern, aka "leaf node" $conv_value = Convert::raw2xml($value); } //Review the fix for similar node names overriding it's predecessor if(array_key_exists($k, $data) == true) { $data[$k] = $data[$k] . ",". $conv_value; } else { $data[$k] = $conv_value; } } return $child_count; } /** * Gets a single node value. * @param string $xml The source xml to parse, this could be the original response received. * @param string $collection The name of parent node which wraps the elements, if available * @param string $element The element we need to extract the node value. */ function getValue($xml, $collection=NULL, $element=NULL){ $xml = new SimpleXMLElement($xml); if($collection) $childElements = $xml->{$collection}; if($element) $childElements = $xml->{$collection}->{$element}; if($childElements) return Convert::raw2xml($childElements); } /** * Searches for a node in document tree and returns it value. * @param string $xml source xml to parse, this could be the original response received. * @param string $node Node to search for */ function searchValue($xml, $node=NULL){ $xml = new SimpleXMLElement($xml); $childElements = $xml->xpath($node); if($childElements) return Convert::raw2xml($childElements[0]); } /** * Searches for a node in document tree and returns its attributes. * @param string $xml the source xml to parse, this could be the original response received. * @param string $node Node to search for */ function searchAttributes($xml, $node=NULL){ $xml = new SimpleXMLElement($xml); $output = new DataObjectSet(); $childElements = $xml->xpath($node); if($childElements) foreach($childElements as $child){ $data = array(); foreach($child->attributes() as $key => $value){ $data["$key"] = Convert::raw2xml($value); } $output->push(new ArrayData($data)); } return $output; } } ?>