EpnTapMgr.php
3.23 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
<?php
/** @class EpnTapMgr
* @brief Manager to communicates with EPN-TAP services.
*/
class EpnTapMgr {
private $logEpnTap;
private function dateToJD($gregorian_date) {
list($day, $month, $year, $hours, $minutes, $seconds) = preg_split('/[\s\/:]+/', $gregorian_date);
return GregorianToJD($month, $day, $year) + $hours/24 + $minutes/(24*60) + $seconds/(24*60*60);
}
public function JDTodate($jd) {
if(!is_numeric($jd)) {
return '';
}
list($month, $day, $year) = preg_split('/[\s\/:]+/', JDToGregorian(intval($jd)));
$date = sprintf('%04d', $year) . '/' . sprintf('%02d', $month) . '/' . sprintf('%02d', $day);
return ($date == '0000/00/00') ? '' : $date;
}
public function createFilter($targetName, $productTypes, $timeMin, $timeMax) {
$filter = array();
if($targetName) {
array_push($filter, "target_name = '$targetName'");
}
if($productTypes) {
array_push($filter, "dataproduct_type IN ('" . join("', '", $productTypes) . "')");
}
if($timeMin) {
array_push($filter, "time_min >= " . $this->dateToJD($timeMin));
}
if($timeMax) {
array_push($filter, "time_max <= " . $this->dateToJD($timeMax));
}
return (count($filter) > 0 ? ' WHERE ' . join(' AND ', $filter) : '');
}
public function request($access_url, $query) {
$votMgr = new VOTableMgr;
$params = 'FORMAT=votable&LANG=ADQL&REQUEST=doQuery';
$url = $access_url . '/sync?' . $params . '&QUERY=' . urlencode(preg_replace('/\s+/', ' ', $query)); // remove also multiple whitespaces
$votMgr->load($url);
$result = $votMgr->parseStream();
return $votMgr->getVotableError() ? array('error' => $votMgr->getVotableError()) : $result;
}
/* filter order: product type, target name, time min, time max */
public function getGranules($table_name, $access_url, $filter, $limit, $offset) {
$query = "SELECT TOP {$limit} * FROM {$table_name} " . $this->createFilter($filter[0], $filter[1], $filter[2], $filter[3]) . " OFFSET {$offset}";
$result = $this->request($access_url, $query);
$result_path = EpnTapDataPath . "test_result.json";
$servicesJsonFile = fopen($result_path, "w");
if(array_key_exists("error", $result)) {
return $result;
}
$non_empty_values = Array();
for ($i = 0 ; $i < count($result) ; $i++) {
$result[$i]['num'] = $i + $offset + 1;
$result[$i]['time_min'] = $this->JDTodate($result[$i]['time_min']);
$result[$i]['time_max'] = $this->JDTodate($result[$i]['time_max']);
foreach($result[$i] as $key => $value) {
$non_empty_values[$key] = (array_key_exists($key, $non_empty_values) ? $non_empty_values[$key] : False) || $value === '' || $value === 'NAN';
}
}
$non_null_cols = array_keys(array_filter($non_empty_values));
for ($i = 0 ; $i < count($result) ; $i++) {
$result[$i] = array_diff_key($result[$i], array_flip($non_null_cols));
}
// error_log('Query result: ' . json_encode($result));
return $result;
}
public function getNbResults($url, $tableName, $targetName, $productTypes, $timeMin, $timeMax) {
$query = "SELECT COUNT(*) AS nb_rows FROM $tableName" . $this->createFilter($targetName, $productTypes, $timeMin, $timeMax);
// error_log('Query: ' . $query);
$result = $this->request($url, $query)[0]['nb_rows'];
// error_log('Query result: ' . json_encode($result));
return $result;
}
}
?>