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/v1/mod_semanticweb/arc/store/ARC2_StoreEndpoint.php

https://code.google.com/p/goodrelations-for-joomla/
PHP | 1012 lines | 884 code | 78 blank | 50 comment | 83 complexity | 2bcce33ff152b42f88f45c0e67ab34a8 MD5 | raw file
    

  1. <?php

    2. 

  2. /*

    3. 

  3. homepage: http://arc.semsol.org/

    4. 

  4. license:  http://arc.semsol.org/license

    5. 

  5. 

    6. 

  6. class:    ARC2 SPARQL Endpoint

    7. 

  7. author:   Benjamin Nowack

    8. 

  8. version:  2008-09-03 (Addition: support for "sql" and "infos" result formats (activate the former via "endpoint_enable_sql_output"))

    9. 

  9. */

    10. 

  10. 

    11. 

  11. ARC2::inc('Store');

    12. 

  12. 

    13. 

  13. class ARC2_StoreEndpoint extends ARC2_Store {

    14. 

  14. 

    15. 

  15.   function __construct($a = '', &$caller) {

    16. 

  16.     parent::__construct($a, $caller);

    17. 

  17.   }

    18. 

  18.   

    19. 

  19.   function ARC2_StoreEndpoint($a = '', &$caller) {

    20. 

  20.     $this->__construct($a, $caller);

    21. 

  21.   }

    22. 

  22. 

    23. 

  23.   function __init() {

    24. 

  24.     parent::__init();

    25. 

  25.     $this->headers = array('http' => 'HTTP/1.1 200 OK', 'vary' => 'Vary: Accept');

    26. 

  26.     $this->read_key = $this->v('endpoint_read_key', '', $this->a);

    27. 

  27.     $this->write_key = $this->v('endpoint_write_key', '', $this->a);

    28. 

  28.     $this->a['store_allow_extension_functions'] = $this->v('store_allow_extension_functions', 0, $this->a);    

    29. 

  29.     $this->allow_sql = $this->v('endpoint_enable_sql_output', 0, $this->a);

    30. 

  30.     $this->result = '';

    31. 

  31.   }

    32. 

  32. 

    33. 

  33.   /*  */

    34. 

  34.   

    35. 

  35.   function getQueryString($mthd = '') {

    36. 

  36.     $r = '';

    37. 

  37.     if (!$mthd || ($mthd == 'post')) {

    38. 

  38.       $r = @file_get_contents('php://input');

    39. 

  39.     }

    40. 

  40.     $r = !$r ?$this->v1('QUERY_STRING', '', $_SERVER) : $r;

    41. 

  41.     return $r;

    42. 

  42.   }

    43. 

  43. 

    44. 

  44.   function p($name='', $mthd = '', $multi = '', $default = '') {

    45. 

  45.     $mthd = strtolower($mthd);

    46. 

  46.     if($multi){

    47. 

  47.       $qs = $this->getQueryString($mthd);

    48. 

  48.       if (preg_match_all('/\&' . $name . '=([^\&]*)/', $qs, $m)){

    49. 

  49.         foreach ($m[1] as $i => $val) {

    50. 

  50.           $m[1][$i] = stripslashes($val);

    51. 

  51.         }

    52. 

  52.         return $m[1];

    53. 

  53.       }

    54. 

  54.       return $default ? $default : array();

    55. 

  55.     }

    56. 

  56.     $args = array_merge($_GET, $_POST);

    57. 

  57.     $r = isset($args[$name]) ? $args[$name] : $default;

    58. 

  58.     return is_array($r) ? $r : stripslashes($r);

    59. 

  59.   }

    60. 

  60.   

    61. 

  61.   /*  */

    62. 

  62. 

    63. 

  63.   function getFeatures() {

    64. 

  64.     return $this->v1('endpoint_features', array(), $this->a);

    65. 

  65.   }

    66. 

  66. 

    67. 

  67.   function setHeader($k, $v) {

    68. 

  68.     $this->headers[$k] = $v;

    69. 

  69.   }

    70. 

  70.   

    71. 

  71.   function sendHeaders() {

    72. 

  72.     if (!isset($this->is_dump) || !$this->is_dump) {

    73. 

  73.       $this->setHeader('content-length', 'Content-Length: ' . strlen($this->getResult()));

    74. 

  74.       foreach ($this->headers as $k => $v) {

    75. 

  75.         header($v);

    76. 

  76.       }

    77. 

  77.     }

    78. 

  78.   }

    79. 

  79.   

    80. 

  80.   function getResult() {

    81. 

  81.     return $this->result;

    82. 

  82.   }

    83. 

  83.   

    84. 

  84.   /*  */

    85. 

  85.   

    86. 

  86.   function handleRequest($auto_setup = 0) {

    87. 

  87.     if (!$this->isSetUp()) {

    88. 

  88.       if ($auto_setup) {

    89. 

  89.         $this->setUp();

    90. 

  90.         return $this->handleRequest();

    91. 

  91.       }

    92. 

  92.       else {

    93. 

  93.         $this->setHeader('http', 'HTTP/1.1 400 Bad Request');

    94. 

  94.         $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8');

    95. 

  95.         $this->result = 'Missing configuration or the endpoint store was not set up yet.';

    96. 

  96.       }

    97. 

  97.     }

    98. 

  98.     elseif ($img = $this->p('img')) {

    99. 

  99.       $this->handleImgRequest($img);

    100. 

  100.     }

    101. 

  101.     elseif ($q = $this->p('query')) {

    102. 

  102.       $this->checkProcesses();

    103. 

  103.       $this->handleQueryRequest($q);

    104. 

  104.       if ($this->p('show_inline')) {

    105. 

  105.         $this->query_result = '

    106. 

  106.           <div class="results">

    107. 

  107.             ' . ($this->p('output') != 'htmltab' ? '<pre>' . htmlspecialchars($this->getResult()) . '</pre>' : $this->getResult()) . '

    108. 

  108.           </div>

    109. 

  109.         ';

    110. 

  110.         $this->handleEmptyRequest();

    111. 

  111.       }

    112. 

  112.     }

    113. 

  113.     else {

    114. 

  114.       $this->handleEmptyRequest();

    115. 

  115.     }

    116. 

  116.   }

    117. 

  117.   

    118. 

  118.   function go($auto_setup = 0) {

    119. 

  119.     $this->handleRequest($auto_setup);

    120. 

  120.     $this->sendHeaders();

    121. 

  121.     echo $this->getResult();

    122. 

  122.   }

    123. 

  123.   

    124. 

  124.   /*  */

    125. 

  125.   

    126. 

  126.   function handleImgRequest($img) {

    127. 

  127.     $this->setHeader('content-type', 'Content-type: image/gif');

    128. 

  128.     $imgs = array(

    129. 

  129.       'bg_body' => base64_decode('R0lGODlhAQBkAMQAAPf39/Hx8erq6vPz8/Ly8u/v7+np6fT09Ovr6/b29u3t7ejo6Pz8/Pv7+/39/fr6+vj4+P7+/vn5+f///wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5BAAAAAAALAAAAAABAGQAAAUp4GIIiFIExHAkAAC9cAxJdG3TT67vTe//jKBQ6Cgaj5GkcpmcOJ/QZwgAOw=='),

    130. 

  130.     );

    131. 

  131.     $this->result = isset($imgs[$img]) ? $imgs[$img] : '';

    132. 

  132.     $this->sendHeaders();

    133. 

  133.     echo $this->getResult();

    134. 

  134.     exit;

    135. 

  135.   }

    136. 

  136.   

    137. 

  137.   /*  */

    138. 

  138.   

    139. 

  139.   function handleEmptyRequest() {

    140. 

  140.     $this->setHeader('content-type', 'Content-type: text/html; charset=utf-8');

    141. 

  141.     $this->result = $this->getHTMLFormDoc();

    142. 

  142.   }

    143. 

  143. 

    144. 

  144.   /*  */

    145. 

  145.   

    146. 

  146.   function checkProcesses() {

    147. 

  147.     

    148. 

  148.   }

    149. 

  149.   

    150. 

  150.   /*  */

    151. 

  151. 

    152. 

  152.   function handleQueryRequest($q) {

    153. 

  153.     if (preg_match('/^dump/i', $q)) {

    154. 

  154.       $infos = array('query' => array('type' => 'dump'));

    155. 

  155.       $this->is_dump = 1;

    156. 

  156.     }

    157. 

  157.     else {

    158. 

  158.       ARC2::inc('SPARQLPlusParser');

    159. 

  159.       $p = & new ARC2_SPARQLPlusParser($this->a, $this);

    160. 

  160.       $p->parse($q);

    161. 

  161.       $infos = $p->getQueryInfos();

    162. 

  162.     }

    163. 

  163.     /* errors? */

    164. 

  164.     if ($errors = $this->getErrors()) {

    165. 

  165.       $this->setHeader('http', 'HTTP/1.1 400 Bad Request');

    166. 

  166.       $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8');

    167. 

  167.       $this->result = join("\n", $errors);

    168. 

  168.       return true;

    169. 

  169.     }

    170. 

  170.     $qt = $infos['query']['type'];

    171. 

  171.     /* wrong read key? */

    172. 

  172.     if ($this->read_key && ($this->p('key') != $this->read_key) && preg_match('/^(select|ask|construct|describe|dump)$/', $qt)) {

    173. 

  173.       $this->setHeader('http', 'HTTP/1.1 401 Access denied');

    174. 

  174.       $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8');

    175. 

  175.       $this->result = 'Access denied. Missing or wrong "key" parameter.';

    176. 

  176.       return true;

    177. 

  177.     }

    178. 

  178.     /* wrong write key? */

    179. 

  179.     if ($this->write_key && ($this->p('key') != $this->write_key) && preg_match('/^(load|insert|delete|update)$/', $qt)) {

    180. 

  180.       $this->setHeader('http', 'HTTP/1.1 401 Access denied');

    181. 

  181.       $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8');

    182. 

  182.       $this->result = 'Access denied. Missing or wrong "key" parameter.';

    183. 

  183.       return true;

    184. 

  184.     }

    185. 

  185.     /* non-allowed query type? */

    186. 

  186.     if (!in_array($qt, $this->getFeatures())) {

    187. 

  187.       $this->setHeader('http', 'HTTP/1.1 401 Access denied');

    188. 

  188.       $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8');

    189. 

  189.       $this->result = 'Access denied for "' .$qt. '" query';

    190. 

  190.       return true;

    191. 

  191.     }

    192. 

  192.     /* load/insert/delete via GET */

    193. 

  193.     if (in_array($qt, array('load', 'insert', 'delete')) && isset($_GET['query'])) {

    194. 

  194.       $this->setHeader('http', 'HTTP/1.1 501 Not Implemented');

    195. 

  195.       $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8');

    196. 

  196.       $this->result = 'Query type "' .$qt. '" not supported via GET';

    197. 

  197.       return true;

    198. 

  198.     }

    199. 

  199.     /* unsupported query type */

    200. 

  200.     if (!in_array($qt, array('select', 'ask', 'describe', 'construct', 'load', 'insert', 'delete', 'dump'))) {

    201. 

  201.       $this->setHeader('http', 'HTTP/1.1 501 Not Implemented');

    202. 

  202.       $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8');

    203. 

  203.       $this->result = 'Unsupported query type "' .$qt. '"';

    204. 

  204.       return true;

    205. 

  205.     }

    206. 

  206.     /* adjust infos */

    207. 

  207.     $infos = $this->adjustQueryInfos($infos);

    208. 

  208.     $t1 = ARC2::mtime();

    209. 

  209.     $r = array('result' => $this->runQuery($infos, $qt));

    210. 

  210.     $t2 = ARC2::mtime();

    211. 

  211.     $r['query_time'] = $t2 - $t1;

    212. 

  212.     /* query errors? */

    213. 

  213.     if ($errors = $this->getErrors()) {

    214. 

  214.       $this->setHeader('http', 'HTTP/1.1 400 Bad Request');

    215. 

  215.       $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8');

    216. 

  216.       $this->result = 'Error: ' . join("\n", $errors);

    217. 

  217.       return true;

    218. 

  218.     }

    219. 

  219.     /* result */

    220. 

  220.     $m = 'get' . ucfirst($qt) . 'ResultDoc';

    221. 

  221.     if (method_exists($this, $m)) {

    222. 

  222.       $this->result = $this->$m($r);

    223. 

  223.     }

    224. 

  224.     else {

    225. 

  225.       $this->setHeader('content-type', 'Content-type: text/plain; charset=utf-8');

    226. 

  226.       $this->result = 'Result serializer not available, dumping raw data:' . "\n" . print_r($r, 1);

    227. 

  227.     }

    228. 

  228.   }

    229. 

  229.   

    230. 

  230.   /*  */

    231. 

  231. 

    232. 

  232.   function adjustQueryInfos($infos) {

    233. 

  233.     /* limit */

    234. 

  234.     if ($max_l = $this->v('endpoint_max_limit', 0, $this->a)) {

    235. 

  235.       if ($this->v('limit', $max_l + 1, $infos['query']) > $max_l) {

    236. 

  236.         $infos['query']['limit'] = $max_l;

    237. 

  237.       }

    238. 

  238.     }

    239. 

  239.     /* default-graph-uri / named-graph-uri */

    240. 

  240.     $dgs = $this->p('default-graph-uri', '', 1);

    241. 

  241.     $ngs = $this->p('named-graph-uri', '', 1);

    242. 

  242.     if (count(array_merge($dgs, $ngs))) {

    243. 

  243.       $ds = array();

    244. 

  244.       foreach ($dgs as $g) {

    245. 

  245.         $ds[] = array('graph' => $this->calcURI($g), 'named' => 0);

    246. 

  246.       }

    247. 

  247.       foreach ($ngs as $g) {

    248. 

  248.         $ds[] = array('graph' => $this->calcURI($g), 'named' => 1);

    249. 

  249.       }

    250. 

  250.       $infos['query']['dataset'] = $ds;

    251. 

  251.     }

    252. 

  252.     /* infos result format */

    253. 

  253.     if (($this->p('format') == 'infos') || ($this->p('output') == 'infos')) {

    254. 

  254.       $infos['result_format'] = 'structure';

    255. 

  255.     }

    256. 

  256.     /* sql result format */

    257. 

  257.     if (($this->p('format') == 'sql') || ($this->p('output') == 'sql')) {

    258. 

  258.       $infos['result_format'] = 'sql';

    259. 

  259.     }

    260. 

  260.     return $infos;

    261. 

  261.   }

    262. 

  262.   

    263. 

  263.   /*  */

    264. 

  264. 

    265. 

  265.   function getResultFormat($formats, $default) {

    266. 

  266.     $prefs = array();

    267. 

  267.     /* arg */

    268. 

  268.     if (($v = $this->p('format')) || ($v = $this->p('output'))) {

    269. 

  269.       $prefs[] = $v;

    270. 

  270.     }

    271. 

  271.     /* accept header */

    272. 

  272.     if ($vals = explode(',', $_SERVER['HTTP_ACCEPT'])) {

    273. 

  273.       $o_vals = array();

    274. 

  274.       foreach ($vals as $val) {

    275. 

  275.         if (preg_match('/(rdf\+n3|x\-turtle|rdf\+xml|sparql\-results\+xml|sparql\-results\+json|json)/', $val, $m)) {

    276. 

  276.           $o_vals[$m[1]] = 1;

    277. 

  277.           if (preg_match('/\;q\=([0-9\.]+)/', $val, $sub_m)) {

    278. 

  278.             $o_vals[$m[1]] = 1 * $sub_m[1];

    279. 

  279.           }

    280. 

  280.         }

    281. 

  281.       }

    282. 

  282.       arsort($o_vals);

    283. 

  283.       foreach ($o_vals as $val => $prio) {

    284. 

  284.         $prefs[] = $val;

    285. 

  285.       }

    286. 

  286.     }

    287. 

  287.     /* default */

    288. 

  288.     $prefs[] = $default;

    289. 

  289.     foreach ($prefs as $pref) {

    290. 

  290.       if (isset($formats[$pref])) {

    291. 

  291.         return $formats[$pref];

    292. 

  292.       }

    293. 

  293.     }

    294. 

  294.   }

    295. 

  295. 

    296. 

  296.   /*  */

    297. 

  297. 

    298. 

  298.   function getSelectResultDoc($r) {

    299. 

  299.     $formats = array(

    300. 

  300.       'xml' => 'SPARQLXML', 'sparql-results+xml' => 'SPARQLXML', 

    301. 

  301.       'json' => 'SPARQLJSON', 'sparql-results+json' => 'SPARQLJSON',

    302. 

  302.       'php_ser' => 'PHPSER', 'plain' => 'Plain', 

    303. 

  303.       'sql' => ($this->allow_sql ? 'SQL' : 'xSQL'), 

    304. 

  304.       'infos' => 'Plain',

    305. 

  305.       'htmltab' => 'HTMLTable',

    306. 

  306.     );

    307. 

  307.     if ($f = $this->getResultFormat($formats, 'xml')) {

    308. 

  308.       $m = 'get' . $f . 'SelectResultDoc';

    309. 

  309.       return method_exists($this, $m) ? $this->$m($r) : 'not implemented';

    310. 

  310.     }

    311. 

  311.     return '';

    312. 

  312.   }

    313. 

  313.   

    314. 

  314.   function getSPARQLXMLSelectResultDoc($r) {

    315. 

  315.     $this->setHeader('content-type', 'Content-Type: application/sparql-results+xml');

    316. 

  316.     $vars = $r['result']['variables'];

    317. 

  317.     $rows = $r['result']['rows'];

    318. 

  318.     $dur = $r['query_time'];

    319. 

  319.     $nl = "\n";

    320. 

  320.     /* doc */

    321. 

  321.     $r = '' .

    322. 

  322.       '<?xml version="1.0"?>' . 

    323. 

  323.       $nl . '<sparql xmlns="http://www.w3.org/2005/sparql-results#">' .

    324. 

  324.     '';

    325. 

  325.     /* head */

    326. 

  326.     $r .= $nl . '  <head>';

    327. 

  327.     $r .= $nl . '    <!-- query time: '. round($dur, 4) .' sec -->';

    328. 

  328.     if (is_array($vars)) {

    329. 

  329.       foreach ($vars as $var) {

    330. 

  330.         $r .= $nl . '    <variable name="' .$var. '"/>';

    331. 

  331.       }

    332. 

  332.     }

    333. 

  333.     $r .= $nl . '  </head>';

    334. 

  334.     /* results */

    335. 

  335.     $r .= $nl . '  <results>';

    336. 

  336.     if (is_array($rows)) {

    337. 

  337.       foreach ($rows as $row) {

    338. 

  338.         $r .= $nl . '    <result>';

    339. 

  339.         foreach ($vars as $var) {

    340. 

  340.           if (isset($row[$var])) {

    341. 

  341.             $r .= $nl . '      <binding name="' .$var. '">';

    342. 

  342.             if ($row[$var . ' type'] == 'uri') {

    343. 

  343.               $r .= $nl . '        <uri>' .htmlspecialchars($row[$var]). '</uri>';

    344. 

  344.             }

    345. 

  345.             elseif ($row[$var . ' type'] == 'bnode') {

    346. 

  346.               $r .= $nl . '        <bnode>' .substr($row[$var], 2). '</bnode>';

    347. 

  347.             }

    348. 

  348.             else {

    349. 

  349.               $dt = isset($row[$var . ' datatype']) ? ' datatype="' .htmlspecialchars($row[$var . ' datatype']). '"' : '';

    350. 

  350.               $lang = isset($row[$var . ' lang']) ? ' xml:lang="' .htmlspecialchars($row[$var . ' lang']). '"' : '';

    351. 

  351.               $r .= $nl . '        <literal' . $dt . $lang . '>' .htmlspecialchars($row[$var]). '</literal>';

    352. 

  352.             }

    353. 

  353.             $r .= $nl . '      </binding>';

    354. 

  354.           }

    355. 

  355.         }

    356. 

  356.         $r .= $nl . '    </result>';

    357. 

  357.       }

    358. 

  358.     }

    359. 

  359.     $r .= $nl . '  </results>';

    360. 

  360.     /* /doc */

    361. 

  361.     $r .= $nl . '</sparql>';

    362. 

  362.     return $r;

    363. 

  363.   }

    364. 

  364.   

    365. 

  365.   function getSPARQLJSONSelectResultDoc($r) {

    366. 

  366.     $con = $this->getDBCon();

    367. 

  367.     $this->setHeader('content-type', 'Content-Type: application/sparql-results+json');

    368. 

  368.     $vars = $r['result']['variables'];

    369. 

  369.     $rows = $r['result']['rows'];

    370. 

  370.     $dur = $r['query_time'];

    371. 

  371.     $nl = "\n";

    372. 

  372.     /* doc */

    373. 

  373.     $r = '{';

    374. 

  374.     /* head */

    375. 

  375.     $r .= $nl . '  "head": {';

    376. 

  376.     $r .= $nl . '    "vars": [';

    377. 

  377.     $first_var = 1;

    378. 

  378.     foreach ($vars as $var) {

    379. 

  379.       $r .= $first_var ? $nl : ',' . $nl;

    380. 

  380.       $r .= '      "' .$var. '"';

    381. 

  381.       $first_var = 0;

    382. 

  382.     }

    383. 

  383.     $r .= $nl . '    ]';

    384. 

  384.     $r .= $nl . '  },';

    385. 

  385.     /* results */

    386. 

  386.     $r .= $nl . '  "results": {';

    387. 

  387.     $r .= $nl . '    "bindings": [';

    388. 

  388.     $first_row = 1;

    389. 

  389.     foreach ($rows as $row) {

    390. 

  390.       $r .= $first_row ? $nl : ',' . $nl;

    391. 

  391.       $r .= '      {';

    392. 

  392.       $first_var = 1;

    393. 

  393.       foreach ($vars as $var) {

    394. 

  394.         if (isset($row[$var])) {

    395. 

  395.           $r .= $first_var ? $nl : ',' . $nl . $nl;

    396. 

  396.           $r .= '        "' .$var. '": {';

    397. 

  397.           if ($row[$var . ' type'] == 'uri') {

    398. 

  398.             $r .= $nl . '          "type": "uri",';

    399. 

  399.             $r .= $nl . '          "value": "' .mysql_real_escape_string($row[$var], $con). '"';

    400. 

  400.           }

    401. 

  401.           elseif ($row[$var . ' type'] == 'bnode') {

    402. 

  402.             $r .= $nl . '          "type": "bnode",';

    403. 

  403.             $r .= $nl . '          "value": "' . substr($row[$var], 2) . '"';

    404. 

  404.           }

    405. 

  405.           else {

    406. 

  406.             $dt = isset($row[$var . ' datatype']) ? ',' . $nl .'          "datatype": "' .mysql_real_escape_string($row[$var . ' datatype'], $con). '"' : '';

    407. 

  407.             $lang = isset($row[$var . ' lang']) ? ',' . $nl .'          "xml:lang": "' .mysql_real_escape_string($row[$var . ' lang'], $con). '"' : '';

    408. 

  408.             $type = $dt ? 'typed-literal' : 'literal';

    409. 

  409.             $r .= $nl . '          "type": "' . $type . '",';

    410. 

  410.             $r .= $nl . '          "value": "' . $this->jsonEscape($row[$var]) . '"';

    411. 

  411.             $r .= $dt . $lang;

    412. 

  412.           }

    413. 

  413.           $r .= $nl . '        }';

    414. 

  414.           $first_var = 0;

    415. 

  415.         }

    416. 

  416.       }

    417. 

  417.       $r .= $nl . '      }';

    418. 

  418.       $first_row = 0;

    419. 

  419.     }

    420. 

  420.     $r .= $nl . '    ]';

    421. 

  421.     $r .= $nl . '  }';

    422. 

  422.     /* /doc */

    423. 

  423.     $r .= $nl . '}';

    424. 

  424.     if (($v = $this->p('jsonp')) || ($v = $this->p('callback'))) {

    425. 

  425.       $r = $v . '(' . $r . ')';

    426. 

  426.     }

    427. 

  427.     return $r;

    428. 

  428.   }

    429. 

  429.   

    430. 

  430.   function getPHPSERSelectResultDoc($r) {

    431. 

  431.     $this->setHeader('content-type', 'Content-Type: text/plain');

    432. 

  432.     return serialize($r);

    433. 

  433.   }

    434. 

  434. 

    435. 

  435.   function getSQLSelectResultDoc($r) {

    436. 

  436.     $this->setHeader('content-type', 'Content-Type: text/plain');

    437. 

  437.     return $r['result'];

    438. 

  438.   }

    439. 

  439. 

    440. 

  440.   function getPlainSelectResultDoc($r) {

    441. 

  441.     $this->setHeader('content-type', 'Content-Type: text/plain');

    442. 

  442.     return print_r($r['result'], 1);

    443. 

  443.   }

    444. 

  444. 

    445. 

  445.   function getHTMLTableSelectResultDoc($r) {

    446. 

  446.     $this->setHeader('content-type', 'Content-Type: text/html; charset=utf-8');

    447. 

  447.     $vars = $r['result']['variables'];

    448. 

  448.     $rows = $r['result']['rows'];

    449. 

  449.     $dur = $r['query_time'];

    450. 

  450.     if ($this->p('show_inline')) return '<table>' . $this->getHTMLTableRows($rows, $vars) . '</table>';

    451. 

  451.     return '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

    452. 

  452.       <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

    453. 

  453.       ' .$this->getHTMLDocHead() . '

    454. 

  454.       <body>

    455. 

  455.         <table>

    456. 

  456.           ' . $this->getHTMLTableRows($rows, $vars) . '

    457. 

  457.         </table>

    458. 

  458.       </body>

    459. 

  459.       </html>

    460. 

  460.     ';

    461. 

  461.   }

    462. 

  462.   

    463. 

  463.   function getHTMLTableRows($rows, $vars) {

    464. 

  464.     $r = '';

    465. 

  465.     foreach ($rows as $row) {

    466. 

  466.       $hr = '';

    467. 

  467.       $rr = '';

    468. 

  468.       foreach ($vars as $var) {

    469. 

  469.         $hr .= $r ? '' : '<th>' . htmlspecialchars($var) . '</th>';

    470. 

  470.         $rr .= '<td>' . @htmlspecialchars($row[$var]) . '</td>';

    471. 

  471.       }

    472. 

  472.       $r .= $hr ? '<tr>' . $hr . '</tr>' : '';

    473. 

  473.       $r .= '<tr>' . $rr . '</tr>';

    474. 

  474.     }

    475. 

  475.     return $r ? $r : '<em>No results found</em>';

    476. 

  476.   }

    477. 

  477. 

    478. 

  478.   /*  */

    479. 

  479.   

    480. 

  480.   function getAskResultDoc($r) {

    481. 

  481.     $formats = array(

    482. 

  482.       'xml' => 'SPARQLXML', 'sparql-results+xml' => 'SPARQLXML', 

    483. 

  483.       'json' => 'SPARQLJSON', 'sparql-results+json' => 'SPARQLJSON',

    484. 

  484.       'plain' => 'Plain',

    485. 

  485.       'php_ser' => 'PHPSER'

    486. 

  486.     );

    487. 

  487.     if ($f = $this->getResultFormat($formats, 'xml')) {

    488. 

  488.       $m = 'get' . $f . 'AskResultDoc';

    489. 

  489.       return method_exists($this, $m) ? $this->$m($r) : 'not implemented';

    490. 

  490.     }

    491. 

  491.     return '';

    492. 

  492.   }

    493. 

  493. 

    494. 

  494.   function getSPARQLXMLAskResultDoc($r) {

    495. 

  495.     $this->setHeader('content-type', 'Content-Type: application/sparql-results+xml');

    496. 

  496.     $r_val = $r['result'] ? 'true' : 'false';

    497. 

  497.     $dur = $r['query_time'];

    498. 

  498.     $nl = "\n";

    499. 

  499.     return '' .

    500. 

  500.       '<?xml version="1.0"?>' .

    501. 

  501.       $nl . '<sparql xmlns="http://www.w3.org/2005/sparql-results#">' .

    502. 

  502.       $nl . '  <head>' .

    503. 

  503.       $nl . '    <!-- query time: '. round($dur, 4) .' sec -->' .

    504. 

  504.       $nl . '  </head>' .

    505. 

  505.       $nl . '  <boolean>' .$r_val. '</boolean>' .

    506. 

  506.       $nl . '</sparql>' .

    507. 

  507.     '';

    508. 

  508.   }

    509. 

  509.   

    510. 

  510.   function getSPARQLJSONAskResultDoc($r) {

    511. 

  511.     $this->setHeader('content-type', 'Content-Type: application/sparql-results+json');

    512. 

  512.     $r_val = $r['result'] ? 'true' : 'false';

    513. 

  513.     $dur = $r['query_time'];

    514. 

  514.     $nl = "\n";

    515. 

  515.     $r = '' .

    516. 

  516.       $nl . '{' .

    517. 

  517.       $nl . '  "head": {' .

    518. 

  518.       $nl . '  },' .

    519. 

  519.       $nl . '  "boolean" : ' . $r_val . 

    520. 

  520.       $nl . '}' . 

    521. 

  521.     '';

    522. 

  522.     if (($v = $this->p('jsonp')) || ($v = $this->p('callback'))) {

    523. 

  523.       $r = $v . '(' . $r . ')';

    524. 

  524.     }

    525. 

  525.     return $r;

    526. 

  526.   }    

    527. 

  527.   

    528. 

  528.   function getPHPSERAskResultDoc($r) {

    529. 

  529.     $this->setHeader('content-type', 'Content-Type: text/plain');

    530. 

  530.     return serialize($r);

    531. 

  531.   }

    532. 

  532. 

    533. 

  533.   function getPlainAskResultDoc($r) {

    534. 

  534.     $this->setHeader('content-type', 'Content-Type: text/plain');

    535. 

  535.     return $r['result'] ? 'true' : 'false';

    536. 

  536.   }

    537. 

  537. 

    538. 

  538.   /*  */

    539. 

  539. 

    540. 

  540.   function getConstructResultDoc($r) {

    541. 

  541.     $formats = array(

    542. 

  542.       'rdfxml' => 'RDFXML', 'rdf+xml' => 'RDFXML', 

    543. 

  543.       'json' => 'RDFJSON', 'rdf+json' => 'RDFJSON',

    544. 

  544.       'turtle' => 'Turtle', 'x-turtle' => 'Turtle', 'rdf+n3' => 'Turtle',

    545. 

  545.       'php_ser' => 'PHPSER'

    546. 

  546.     );

    547. 

  547.     if ($f = $this->getResultFormat($formats, 'rdfxml')) {

    548. 

  548.       $m = 'get' . $f . 'ConstructResultDoc';

    549. 

  549.       return method_exists($this, $m) ? $this->$m($r) : 'not implemented';

    550. 

  550.     }

    551. 

  551.     return '';

    552. 

  552.   }

    553. 

  553.   

    554. 

  554.   function getRDFXMLConstructResultDoc($r) {

    555. 

  555.     $this->setHeader('content-type', 'Content-Type: application/rdf+xml');

    556. 

  556.     $index = $r['result'];

    557. 

  557.     $ser = ARC2::getRDFXMLSerializer($this->a);

    558. 

  558.     $dur = $r['query_time'];

    559. 

  559.     return $ser->getSerializedIndex($index) . "\n" . '<!-- query time: ' . $dur . ' -->';

    560. 

  560.   }

    561. 

  561.   

    562. 

  562.   function getTurtleConstructResultDoc($r) {

    563. 

  563.     $this->setHeader('content-type', 'Content-Type: application/x-turtle');

    564. 

  564.     $index = $r['result'];

    565. 

  565.     $ser = ARC2::getTurtleSerializer($this->a);

    566. 

  566.     $dur = $r['query_time'];

    567. 

  567.     return '# query time: ' . $dur . "\n" . $ser->getSerializedIndex($index);

    568. 

  568.   }

    569. 

  569.   

    570. 

  570.   function getRDFJSONConstructResultDoc($r) {

    571. 

  571.     $this->setHeader('content-type', 'Content-Type: application/json');

    572. 

  572.     $index = $r['result'];

    573. 

  573.     $ser = ARC2::getRDFJSONSerializer($this->a);

    574. 

  574.     $dur = $r['query_time'];

    575. 

  575.     $r = $ser->getSerializedIndex($index);

    576. 

  576.     if (($v = $this->p('jsonp')) || ($v = $this->p('callback'))) {

    577. 

  577.       $r = $v . '(' . $r . ')';

    578. 

  578.     }

    579. 

  579.     return $r;

    580. 

  580.   }

    581. 

  581. 

    582. 

  582.   function getPHPSERConstructResultDoc($r) {

    583. 

  583.     $this->setHeader('content-type', 'Content-Type: text/plain');

    584. 

  584.     return serialize($r);

    585. 

  585.   }

    586. 

  586.   

    587. 

  587.   /*  */

    588. 

  588.   

    589. 

  589.   function getDescribeResultDoc($r) {

    590. 

  590.     $formats = array(

    591. 

  591.       'rdfxml' => 'RDFXML', 'rdf+xml' => 'RDFXML', 

    592. 

  592.       'json' => 'RDFJSON', 'rdf+json' => 'RDFJSON',

    593. 

  593.       'turtle' => 'Turtle', 'x-turtle' => 'Turtle', 'rdf+n3' => 'Turtle',

    594. 

  594.       'php_ser' => 'PHPSER'

    595. 

  595.     );

    596. 

  596.     if ($f = $this->getResultFormat($formats, 'rdfxml')) {

    597. 

  597.       $m = 'get' . $f . 'DescribeResultDoc';

    598. 

  598.       return method_exists($this, $m) ? $this->$m($r) : 'not implemented';

    599. 

  599.     }

    600. 

  600.     return '';

    601. 

  601.   }

    602. 

  602.   

    603. 

  603.   function getRDFXMLDescribeResultDoc($r) {

    604. 

  604.     $this->setHeader('content-type', 'Content-Type: application/rdf+xml');

    605. 

  605.     $index = $r['result'];

    606. 

  606.     $ser = ARC2::getRDFXMLSerializer($this->a);

    607. 

  607.     $dur = $r['query_time'];

    608. 

  608.     return $ser->getSerializedIndex($index) . "\n" . '<!-- query time: ' . $dur . ' -->';

    609. 

  609.   }

    610. 

  610.   

    611. 

  611.   function getTurtleDescribeResultDoc($r) {

    612. 

  612.     $this->setHeader('content-type', 'Content-Type: application/x-turtle');

    613. 

  613.     $index = $r['result'];

    614. 

  614.     $ser = ARC2::getTurtleSerializer($this->a);

    615. 

  615.     $dur = $r['query_time'];

    616. 

  616.     return '# query time: ' . $dur . "\n" . $ser->getSerializedIndex($index);

    617. 

  617.   }

    618. 

  618.   

    619. 

  619.   function getRDFJSONDescribeResultDoc($r) {

    620. 

  620.     $this->setHeader('content-type', 'Content-Type: application/json');

    621. 

  621.     $index = $r['result'];

    622. 

  622.     $ser = ARC2::getRDFJSONSerializer($this->a);

    623. 

  623.     $dur = $r['query_time'];

    624. 

  624.     $r = $ser->getSerializedIndex($index);

    625. 

  625.     if (($v = $this->p('jsonp')) || ($v = $this->p('callback'))) {

    626. 

  626.       $r = $v . '(' . $r . ')';

    627. 

  627.     }

    628. 

  628.     return $r;

    629. 

  629.   }

    630. 

  630. 

    631. 

  631.   function getPHPSERDescribeResultDoc($r) {

    632. 

  632.     $this->setHeader('content-type', 'Content-Type: text/plain');

    633. 

  633.     return serialize($r);

    634. 

  634.   }

    635. 

  635.   

    636. 

  636.   /*  */

    637. 

  637.   

    638. 

  638.   function getDumpResultDoc() {

    639. 

  639.     $this->headers = array();

    640. 

  640.     return '';

    641. 

  641.   }

    642. 

  642.   

    643. 

  643.   /*  */

    644. 

  644.   

    645. 

  645.   function getLoadResultDoc($r) {

    646. 

  646.     $formats = array(

    647. 

  647.       'xml' => 'SPARQLXML', 'sparql-results+xml' => 'SPARQLXML', 

    648. 

  648.       'json' => 'SPARQLJSON', 'sparql-results+json' => 'SPARQLJSON',

    649. 

  649.       'plain' => 'Plain',

    650. 

  650.       'php_ser' => 'PHPSER'

    651. 

  651.     );

    652. 

  652.     if ($f = $this->getResultFormat($formats, 'xml')) {

    653. 

  653.       $m = 'get' . $f . 'LoadResultDoc';

    654. 

  654.       return method_exists($this, $m) ? $this->$m($r) : 'not implemented';

    655. 

  655.     }

    656. 

  656.     return '';

    657. 

  657.   }

    658. 

  658. 

    659. 

  659.   function getSPARQLXMLLoadResultDoc($r) {

    660. 

  660.     $this->setHeader('content-type', 'Content-Type: application/sparql-results+xml');

    661. 

  661.     $r_val = $r['result']['t_count'];

    662. 

  662.     $dur = $r['query_time'];

    663. 

  663.     $nl = "\n";

    664. 

  664.     return '' .

    665. 

  665.       '<?xml version="1.0"?>' .

    666. 

  666.       $nl . '<sparql xmlns="http://www.w3.org/2005/sparql-results#">' .

    667. 

  667.       $nl . '  <head>' .

    668. 

  668.       $nl . '    <!-- query time: '. round($dur, 4) .' sec -->' .

    669. 

  669.       $nl . '  </head>' .

    670. 

  670.       $nl . '  <inserted>' .$r_val. '</inserted>' .

    671. 

  671.       $nl . '</sparql>' .

    672. 

  672.     '';

    673. 

  673.   }

    674. 

  674.   

    675. 

  675.   function getSPARQLJSONLoadResultDoc($r) {

    676. 

  676.     $this->setHeader('content-type', 'Content-Type: application/sparql-results+json');

    677. 

  677.     $r_val = $r['result']['t_count'];

    678. 

  678.     $dur = $r['query_time'];

    679. 

  679.     $nl = "\n";

    680. 

  680.     $r = '' .

    681. 

  681.       $nl . '{' .

    682. 

  682.       $nl . '  "head": {' .

    683. 

  683.       $nl . '  },' .

    684. 

  684.       $nl . '  "inserted" : ' . $r_val . 

    685. 

  685.       $nl . '}' . 

    686. 

  686.     '';

    687. 

  687.     if (($v = $this->p('jsonp')) || ($v = $this->p('callback'))) {

    688. 

  688.       $r = $v . '(' . $r . ')';

    689. 

  689.     }

    690. 

  690.     return $r;

    691. 

  691.   }    

    692. 

  692.   

    693. 

  693.   function getPHPSERLoadResultDoc($r) {

    694. 

  694.     $this->setHeader('content-type', 'Content-Type: text/plain');

    695. 

  695.     return serialize($r);

    696. 

  696.   }

    697. 

  697. 

    698. 

  698.   function getPlainLoadResultDoc($r) {

    699. 

  699.     $this->setHeader('content-type', 'Content-Type: text/plain');

    700. 

  700.     return $r['result'] ? 'true' : 'false';

    701. 

  701.   }

    702. 

  702. 

    703. 

  703.   /*  */  

    704. 

  704.   

    705. 

  705.   function getDeleteResultDoc($r) {

    706. 

  706.     $formats = array(

    707. 

  707.       'xml' => 'SPARQLXML', 'sparql-results+xml' => 'SPARQLXML', 

    708. 

  708.       'json' => 'SPARQLJSON', 'sparql-results+json' => 'SPARQLJSON',

    709. 

  709.       'plain' => 'Plain',

    710. 

  710.       'php_ser' => 'PHPSER'

    711. 

  711.     );

    712. 

  712.     if ($f = $this->getResultFormat($formats, 'xml')) {

    713. 

  713.       $m = 'get' . $f . 'DeleteResultDoc';

    714. 

  714.       return method_exists($this, $m) ? $this->$m($r) : 'not implemented';

    715. 

  715.     }

    716. 

  716.     return '';

    717. 

  717.   }

    718. 

  718. 

    719. 

  719.   function getSPARQLXMLDeleteResultDoc($r) {

    720. 

  720.     $this->setHeader('content-type', 'Content-Type: application/sparql-results+xml');

    721. 

  721.     $r_val = $r['result']['t_count'];

    722. 

  722.     $dur = $r['query_time'];

    723. 

  723.     $nl = "\n";

    724. 

  724.     return '' .

    725. 

  725.       '<?xml version="1.0"?>' .

    726. 

  726.       $nl . '<sparql xmlns="http://www.w3.org/2005/sparql-results#">' .

    727. 

  727.       $nl . '  <head>' .

    728. 

  728.       $nl . '    <!-- query time: '. round($dur, 4) .' sec -->' .

    729. 

  729.       $nl . '  </head>' .

    730. 

  730.       $nl . '  <deleted>' .$r_val. '</deleted>' .

    731. 

  731.       $nl . '</sparql>' .

    732. 

  732.     '';

    733. 

  733.   }

    734. 

  734.   

    735. 

  735.   function getSPARQLJSONDeleteResultDoc($r) {

    736. 

  736.     $this->setHeader('content-type', 'Content-Type: application/sparql-results+json');

    737. 

  737.     $r_val = $r['result']['t_count'];

    738. 

  738.     $dur = $r['query_time'];

    739. 

  739.     $nl = "\n";

    740. 

  740.     $r = '' .

    741. 

  741.       $nl . '{' .

    742. 

  742.       $nl . '  "head": {' .

    743. 

  743.       $nl . '  },' .

    744. 

  744.       $nl . '  "deleted" : ' . $r_val . 

    745. 

  745.       $nl . '}' . 

    746. 

  746.     '';

    747. 

  747.     if (($v = $this->p('jsonp')) || ($v = $this->p('callback'))) {

    748. 

  748.       $r = $v . '(' . $r . ')';

    749. 

  749.     }

    750. 

  750.     return $r;

    751. 

  751.   }    

    752. 

  752.   

    753. 

  753.   function getPHPSERDeleteResultDoc($r) {

    754. 

  754.     $this->setHeader('content-type', 'Content-Type: text/plain');

    755. 

  755.     return serialize($r);

    756. 

  756.   }

    757. 

  757. 

    758. 

  758.   function getPlainDeleteResultDoc($r) {

    759. 

  759.     $this->setHeader('content-type', 'Content-Type: text/plain');

    760. 

  760.     return $r['result'] ? 'true' : 'false';

    761. 

  761.   }

    762. 

  762. 

    763. 

  763.   /*  */  

    764. 

  764.   

    765. 

  765.   function getInsertResultDoc($r) {

    766. 

  766.     $formats = array(

    767. 

  767.       'xml' => 'SPARQLXML', 'sparql-results+xml' => 'SPARQLXML', 

    768. 

  768.       'json' => 'SPARQLJSON', 'sparql-results+json' => 'SPARQLJSON',

    769. 

  769.       'plain' => 'Plain',

    770. 

  770.       'php_ser' => 'PHPSER'

    771. 

  771.     );

    772. 

  772.     if ($f = $this->getResultFormat($formats, 'xml')) {

    773. 

  773.       $m = 'get' . $f . 'InsertResultDoc';

    774. 

  774.       return method_exists($this, $m) ? $this->$m($r) : 'not implemented';

    775. 

  775.     }

    776. 

  776.     return '';

    777. 

  777.   }

    778. 

  778. 

    779. 

  779.   function getSPARQLXMLInsertResultDoc($r) {

    780. 

  780.     $this->setHeader('content-type', 'Content-Type: application/sparql-results+xml');

    781. 

  781.     $r_val = $r['result']['t_count'];

    782. 

  782.     $dur = $r['query_time'];

    783. 

  783.     $nl = "\n";

    784. 

  784.     return '' .

    785. 

  785.       '<?xml version="1.0"?>' .

    786. 

  786.       $nl . '<sparql xmlns="http://www.w3.org/2005/sparql-results#">' .

    787. 

  787.       $nl . '  <head>' .

    788. 

  788.       $nl . '    <!-- query time: '. round($dur, 4) .' sec -->' .

    789. 

  789.       $nl . '  </head>' .

    790. 

  790.       $nl . '  <inserted>' .$r_val. '</inserted>' .

    791. 

  791.       $nl . '</sparql>' .

    792. 

  792.     '';

    793. 

  793.   }

    794. 

  794.   

    795. 

  795.   function getSPARQLJSONInsertResultDoc($r) {

    796. 

  796.     $this->setHeader('content-type', 'Content-Type: application/sparql-results+json');

    797. 

  797.     $r_val = $r['result']['t_count'];

    798. 

  798.     $dur = $r['query_time'];

    799. 

  799.     $nl = "\n";

    800. 

  800.     $r = '' .

    801. 

  801.       $nl . '{' .

    802. 

  802.       $nl . '  "head": {' .

    803. 

  803.       $nl . '  },' .

    804. 

  804.       $nl . '  "inserted" : ' . $r_val . 

    805. 

  805.       $nl . '}' . 

    806. 

  806.     '';

    807. 

  807.     if (($v = $this->p('jsonp')) || ($v = $this->p('callback'))) {

    808. 

  808.       $r = $v . '(' . $r . ')';

    809. 

  809.     }

    810. 

  810.     return $r;

    811. 

  811.   }    

    812. 

  812.   

    813. 

  813.   function getPHPSERInsertResultDoc($r) {

    814. 

  814.     $this->setHeader('content-type', 'Content-Type: text/plain');

    815. 

  815.     return serialize($r);

    816. 

  816.   }

    817. 

  817. 

    818. 

  818.   function getPlainInsertResultDoc($r) {

    819. 

  819.     $this->setHeader('content-type', 'Content-Type: text/plain');

    820. 

  820.     return $r['result'] ? 'true' : 'false';

    821. 

  821.   }

    822. 

  822. 

    823. 

  823.   /*  */  

    824. 

  824.   

    825. 

  825.   function jsonEscape($v) {

    826. 

  826.     if (function_exists('json_encode')) return trim(json_encode($v), '"');

    827. 

  827.     $from = array("\\", "\r", "\t", "\n", '"', "\b", "\f", "/");

    828. 

  828.     $to = array('\\\\', '\r', '\t', '\n', '\"', '\b', '\f', '\/');

    829. 

  829.     return str_replace($from, $to, $v);

    830. 

  830.   }

    831. 

  831.     

    832. 

  832.   /*  */

    833. 

  833. 

    834. 

  834.   function getHTMLFormDoc() {

    835. 

  835.     return '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

    836. 

  836.       <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

    837. 

  837.       ' . $this->getHTMLDocHead() . '

    838. 

  838.       ' . $this->getHTMLDocBody() . '

    839. 

  839.       </html>

    840. 

  840.     ';

    841. 

  841.   }

    842. 

  842. 

    843. 

  843.   function getHTMLDocHead() {

    844. 

  844.     return '

    845. 

  845.     	<head>

    846. 

  846.     		<title>' . $this->getHTMLDocTitle() . '</title>

    847. 

  847.     		<style type="text/css">

    848. 

  848.         ' . $this->getHTMLDocCSS() . '

    849. 

  849.     		</style>

    850. 

  850.     	</head>

    851. 

  851.     ';

    852. 

  852.   }

    853. 

  853.   

    854. 

  854.   function getHTMLDocTitle() {

    855. 

  855.     return $this->v('endpoint_title', 'ARC SPARQL+ Endpoint', $this->a);

    856. 

  856.   }

    857. 

  857.   

    858. 

  858.   function getHTMLDocHeading() {

    859. 

  859.     return $this->v('endpoint_heading', 'ARC SPARQL+ Endpoint (v' . ARC2::getVersion() . ')', $this->a);

    860. 

  860.   }

    861. 

  861.   

    862. 

  862.   function getHTMLDocCSS() {

    863. 

  863.     $default = '

    864. 

  864.       body {

    865. 

  865.         font-size: 14px;

    866. 

  866.       	font-family: Trebuchet MS, Verdana, Geneva, sans-serif;

    867. 

  867.         background: #fff url(?img=bg_body) top center repeat-x;

    868. 

  868.         padding: 5px 20px 20px 20px;

    869. 

  869.         color: #666;

    870. 

  870.       }

    871. 

  871.       h1 { font-size: 1.6em; font-weight: normal; }

    872. 

  872.       a { color: #c00000; }

    873. 

  873.       th, td {

    874. 

  874.         border: 1px dotted #eee;

    875. 

  875.         padding: 2px 4px; 

    876. 

  876.       }

    877. 

  877.       #sparql-form {

    878. 

  878.         margin-bottom: 30px;

    879. 

  879.       }

    880. 

  880.       #query { 

    881. 

  881.         float: left;

    882. 

  882.         width: 60%;

    883. 

  883.         display: block; 

    884. 

  884.         height: 265px; 

    885. 

  885.         margin-bottom: 10px;

    886. 

  886.       }

    887. 

  887.       .options {

    888. 

  888.         float: right;

    889. 

  889.         font-size: 0.9em;

    890. 

  890.         width: 35%;

    891. 

  891.         border-top: 1px solid #ccc;

    892. 

  892.       }

    893. 

  893.       .options h3 {

    894. 

  894.         margin: 5px;

    895. 

  895.       }

    896. 

  896.       .options dl{

    897. 

  897.         margin: 0px;

    898. 

  898.         padding: 0px 10px 5px 20px;

    899. 

  899.       }

    900. 

  900.       .options dl dt {

    901. 

  901.         border-top: 1px dotted #ddd;

    902. 

  902.         padding-top: 10px;

    903. 

  903.       }

    904. 

  904.       .options dl dt.first {

    905. 

  905.         border: none;

    906. 

  906.       }

    907. 

  907.       .options dl dd {

    908. 

  908.         padding: 5px 0px 7px 0px;

    909. 

  909.       }

    910. 

  910.       .options-2 {

    911. 

  911.         clear: both;

    912. 

  912.         margin: 10px 0px;

    913. 

  913.       }

    914. 

  914.       .form-buttons {

    915. 

  915.       }

    916. 

  916.       .results {

    917. 

  917.         border: 1px solid #eee;

    918. 

  918.         padding: 5px;

    919. 

  919.         background-color: #fcfcfc;

    920. 

  920.       }

    921. 

  921.     ';

    922. 

  922.     return $this->v('endpoint_css', $default, $this->a);

    923. 

  923.   }

    924. 

  924.   

    925. 

  925.   function getHTMLDocBody() {

    926. 

  926.     return '

    927. 

  927.     	<body>

    928. 

  928.         <h1>' . $this->getHTMLDocHeading() . '</h1>

    929. 

  929.         <div class="intro">

    930. 

  930.           <p>

    931. 

  931.             <a href="?">This interface</a> implements 

    932. 

  932.             <a href="http://www.w3.org/TR/rdf-sparql-query/">SPARQL</a> and

    933. 

  933.             <a href="http://arc.semsol.org/docs/v2/sparql+">SPARQL+</a> via <a href="http://www.w3.org/TR/rdf-sparql-protocol/#query-bindings-http">HTTP Bindings</a>. 

    934. 

  934.           </p>

    935. 

  935.           <p>

    936. 

  936.             Enabled operations: ' . join(', ', $this->getFeatures()) . '

    937. 

  937.           </p>

    938. 

  938.           <p>

    939. 

  939.             Max. number of results : ' . $this->v('endpoint_max_limit', '<em>unrestricted</em>', $this->a) . '

    940. 

  940.           </p>

    941. 

  941.         </div>

    942. 

  942.         ' . $this->getHTMLDocForm() .'

    943. 

  943.         ' . ($this->p('show_inline') ? $this->query_result : '') . '

    944. 

  944.     	</body>

    945. 

  945.     ';

    946. 

  946.   }

    947. 

  947.   

    948. 

  948.   function getHTMLDocForm() {

    949. 

  949.     $q = $this->p('query') ? htmlspecialchars($this->p('query')) : "SELECT * WHERE {\n  GRAPH ?g { ?s ?p ?o . }\n}\nLIMIT 10";

    950. 

  950.     return '

    951. 

  951.       <form id="sparql-form" action="?" enctype="application/x-www-form-urlencoded" method="' . ($_SERVER['REQUEST_METHOD'] == 'GET' ? 'get' : 'post' ) . '">

    952. 

  952.         <textarea id="query" name="query" rows="20" cols="80">' . $q . '</textarea>

    953. 

  953.         ' . $this->getHTMLDocOptions() . '

    954. 

  954.         <div class="form-buttons">

    955. 

  955.           <input type="submit" value="Send Query" />

    956. 

  956.           <input type="reset" value="Reset" />

    957. 

  957.         </div>

    958. 

  958.       </form>

    959. 

  959.     ';

    960. 

  960.   }

    961. 

  961.   

    962. 

  962.   function getHTMLDocOptions() {

    963. 

  963.     $sel = $this->p('output');

    964. 

  964.     $sel_code = ' selected="selected"';

    965. 

  965.     return '

    966. 

  966.       <div class="options">

    967. 

  967.         <h3>Options</h3>

    968. 

  968.         <dl>

    969. 

  969.           <dt class="first">Output format (if supported by query type):</dt>

    970. 

  970.           <dd>

    971. 

  971.             <select id="output" name="output">

    972. 

  972.               <option value="" ' . (!$sel ? $sel_code : '') . '>default</option>

    973. 

  973.               <option value="xml" ' . ($sel == 'xml' ? $sel_code : '') . '>XML</option>

    974. 

  974.               <option value="json" ' . ($sel == 'json' ? $sel_code : '') . '>JSON</option>

    975. 

  975.               <option value="plain" ' . ($sel == 'plain' ? $sel_code : '') . '>Plain</option>

    976. 

  976.               <option value="php_ser" ' . ($sel == 'php_ser' ? $sel_code : '') . '>Serialized PHP</option>

    977. 

  977.               <option value="turtle" ' . ($sel == 'turtle' ? $sel_code : '') . '>Turtle</option>

    978. 

  978.               <option value="rdfxml" ' . ($sel == 'rdfxml' ? $sel_code : '') . '>RDF/XML</option>

    979. 

  979.               <option value="infos" ' . ($sel == 'infos' ? $sel_code : '') . '>Query Structure</option>

    980. 

  980.               ' . ($this->allow_sql ? '<option value="sql" ' . ($sel == 'sql' ? $sel_code : '') . '>SQL</option>' : '') . '

    981. 

  981.               <option value="htmltab" ' . ($sel == 'htmltab' ? $sel_code : '') . '>HTML Table</option>

    982. 

  982.             </select>

    983. 

  983.           </dd>

    984. 

  984.           

    985. 

  985.           <dt>jsonp/callback (for JSON results)</dt>

    986. 

  986.           <dd>

    987. 

  987.             <input type="text" id="jsonp" name="jsonp" value="' . htmlspecialchars($this->p('jsonp')) . '" />

    988. 

  988.           </dd>

    989. 

  989.           

    990. 

  990.           <dt>API key (if required)</dt>

    991. 

  991.           <dd>

    992. 

  992.             <input type="text" id="key" name="key" value="' . htmlspecialchars($this->p('key')) . '" />

    993. 

  993.           </dd>

    994. 

  994.           

    995. 

  995.           <dt>Show results inline: </dt>

    996. 

  996.           <dd>

    997. 

  997.             <input type="checkbox" name="show_inline" value="1" ' . ($this->p('show_inline') ? ' checked="checked"' : '') . ' />

    998. 

  998.           </dd>

    999. 

  999.           

    1000. 

  1000.         </dl>

    1001. 

  1001.       </div>

    1002. 

  1002.       <div class="options-2">

    1003. 

  1003.         Change HTTP method: 

    1004. 

  1004.             <a href="javascript:;" onclick="javascript:document.getElementById(\'sparql-form\').method=\'get\'">GET</a> 

    1005. 

  1005.             <a href="javascript:;" onclick="javascript:document.getElementById(\'sparql-form\').method=\'post\'">POST</a> 

    1006. 

  1006.        </div>

    1007. 

  1007.     ';

    1008. 

  1008.   }

    1009. 

  1009.   

    1010. 

  1010.   /*  */

    1011. 

  1011.   

    1012. 

  1012. }

    1013. 

  1013.