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<?php
namespace Dhtmlx\Connector;
use Dhtmlx\Connector\Output\OutputWriter;
class JSONDataConnector extends DataConnector {
public function __construct($res,$type=false,$item_type=false,$data_type=false,$render_type=false){
if (!$item_type) $item_type="Dhtmlx\\Connector\\Data\\JSONCommonDataItem";
if (!$data_type) $data_type="Dhtmlx\\Connector\\DataProcessor\\CommonDataProcessor";
if (!$render_type) $render_type="Dhtmlx\\Connector\\Output\\JSONRenderStrategy";
$this->data_separator = ",\n";
parent::__construct($res,$type,$item_type,$data_type,$render_type);
}
/*! assign options collection to the column
@param name
name of the column
@param options
array or connector object
*/
public function set_options($name,$options){
if (is_array($options)){
$str=array();
foreach($options as $k => $v)
$str[]='{"id":"'.$this->xmlentities($k).'", "value":"'.$this->xmlentities($v).'"}';
$options=implode(",",$str);
}
$this->options[$name]=$options;
}
/*! generates xml description for options collections
@param list
comma separated list of column names, for which options need to be generated
*/
protected function fill_collections($list=""){
$options = array();
foreach ($this->options as $k=>$v) {
$name = $k;
$option="\"{$name}\":[";
if (!is_string($this->options[$name]))
$option.=substr(json_encode($this->options[$name]->render()),1,-1);
else
$option.=$this->options[$name];
$option.="]";
$options[] = $option;
}
$this->extra_output .= implode($this->data_separator, $options);
}
protected function resolve_parameter($name){
if (intval($name).""==$name)
return $this->config->text[intval($name)]["db_name"];
return $name;
}
protected function output_as_xml($res){
$json = $this->render_set($res);
if ($this->simple) return $json;
$result = json_encode($json);
$this->fill_collections();
$is_sections = sizeof($this->sections) && $this->is_first_call();
if ($this->dload || $is_sections || sizeof($this->attributes) || !empty($this->extra_data)){
$attributes = "";
foreach($this->attributes as $k=>$v)
$attributes .= ", \"".$k."\":\"".$v."\"";
$extra = "";
if (!empty($this->extra_output))
$extra .= ', "collections": {'.$this->extra_output.'}';
$sections = "";
if ($is_sections){
//extra sections
foreach($this->sections as $k=>$v)
$sections .= ", \"".$k."\":".$v;
}
$dyn = "";
if ($this->dload){
//info for dyn. loadin
if ($pos=$this->request->get_start())
$dyn .= ", \"pos\":".$pos;
else
$dyn .= ", \"pos\":0, \"total_count\":".$this->sql->get_size($this->request);
}
if ($attributes || $sections || $this->extra_output || $dyn) {
$result = "{ \"data\":".$result.$attributes.$extra.$sections.$dyn."}";
}
}
// return as string
if ($this->as_string) return $result;
// output direct to response
$out = new OutputWriter($result, "");
$out->set_type("json");
$this->event->trigger("beforeOutput", $this, $out);
$out->output("", true, $this->encoding);
return null;
}
}
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