ARC_rdf_store.php in Taxonomy import/export via XML 6

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arc/ARC_rdf_store.php

<?php

/*
appmosphere RDF classes (ARC): http://www.appmosphere.com/en-arc

Copyright (c) 2005 appmosphere web applications, Germany. All Rights Reserved.
This work is distributed under the W3C(r) Software License [1] in the hope
that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
[1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231

ns sk                       http://www.appmosphere.com/ns/site_kit#
ns doap                     http://usefulinc.com/ns/doap#
sk:className                ARC_rdf_store
doap:name                   ARC RDF Store
doap:homepage               http://www.appmosphere.com/en-arc_rdf_store
doap:license                http://www.appmosphere.com/en-arc_license
doap:programming-language   PHP
doap:maintainer             Benjamin Nowack
doap:shortdesc              A SPARQL-enabled RDF store written in PHP
//release
doap:created                2006-05-23
doap:revision               0.2.1
//changelog
sk:releaseChanges           2005-10-30: pre-release 0.0.1
                            2005-12-04: pre-release 0.0.2
                                        - simplified tables to better support unsmushing and graph queries
                            2006-01-27: release 0.1.0
                                        - rewrote most of the code
                                        - added support for custom prop_tables and mySQL's MERGE storage engine
                                        - added support for CONSTRUCT, DESCRIBE, and ASK
                                        - added add_data, update_data, delete_data
                            2006-02-17: revision 0.1.1
                                        - the loader's xml:base is set to the provided graph_iri now
                            2006-02-19: revision 0.1.2
                                        - added JSONP support to "add_data", "update_data", and "delete_data" methods
                            2006-03-08: revision 0.1.3
                                        - some bug-fixing and better error handling
                            2006-04-04: release 0.2.0
                                        - adjusted for ARC API integration
                            2006-05-23: revision 0.2.1
                                        - added "query_infos" result type
                            2006-10-01: revision 0.2.2.
                                        - minor tweak for now optional store vars
*/
class ARC_rdf_store {
  var $version = "0.2.2";
  function __construct(&$api) {
    $this->api =& $api;
    $this->config = $this->api
      ->get_config();
  }
  function ARC_rdf_store(&$api) {
    $this
      ->__construct($api);
  }

  /*					*/
  function query($args = "") {

    /* query, result_type (query_infos|rows|json|xml|single|rows_n_count|row_count|sql), result_type_args, obj_props, dt_props, iri_alts, ifps, fps, fix_utf8 */
    if (!isset($args["query"]) || !strlen(trim($args["query"]))) {
      return array(
        "error" => "missing or empty query",
      );
    }
    $query = trim($args["query"]);
    $parser =& $this->api
      ->get_sparql_parser();
    $parser
      ->parse($query);

    /* error check */
    if ($errors = $parser
      ->get_errors()) {
      return array(
        "error" => "Errors (or unsupported commands) in query :\n- " . implode("\n- ", $errors) . "\n\n",
      );
    }

    /* run query */
    $infos = $parser
      ->get_infos();
    if (isset($args["result_type"]) && $args["result_type"] == "query_infos") {
      return array(
        "result" => $infos,
        "error" => "",
      );
    }
    $q_type = $infos["query_type"];
    if (!($handler =& $this->api
      ->get_query_handler($q_type))) {
      return array(
        "error" => "Unsupported query type '" . $q_type . "'.",
      );
    }
    $args["infos"] = $infos;
    return $handler
      ->get_result($args);
  }
  function add_data($args = "") {
    $handler =& $this->api
      ->get_query_handler("add");
    return $handler ? $handler
      ->get_result($args) : false;
  }
  function delete_data($args = "") {
    $handler =& $this->api
      ->get_query_handler("delete");
    return $handler ? $handler
      ->get_result($args) : false;
  }
  function update_data($args = "") {
    $handler =& $this->api
      ->get_query_handler("update");
    return $handler ? $handler
      ->get_result($args) : false;
  }

  /*					*/
  function get_store_vars($var_cat = "", $var_cat_qlfr = "") {
    $result = array();
    if (isset($this->config['enable_vars']) && $this->config['enable_vars']) {
      $tbl_name = $this->config["prefix"] . "_store_var";
      if ($rs = mysql_query("SELECT var_name, var_val FROM " . $tbl_name . " WHERE var_cat='" . rawurlencode($var_cat) . "' AND var_cat_qlfr='" . md5($var_cat_qlfr) . "'")) {
        while ($cur_row = mysql_fetch_array($rs)) {
          $result[] = array(
            "name" => rawurldecode($cur_row["var_name"]),
            "value" => rawurldecode($cur_row["var_val"]),
          );
        }
      }
    }
    return $result;
  }
  function get_store_var($var_cat = "", $var_cat_qlfr = "", $var_name = "") {
    if (isset($this->config['enable_vars']) && $this->config['enable_vars']) {
      $tbl_name = $this->config["prefix"] . "_store_var";
      if ($rs = mysql_query("SELECT var_val FROM " . $tbl_name . " WHERE var_cat='" . rawurlencode($var_cat) . "' AND var_cat_qlfr='" . md5($var_cat_qlfr) . "' AND var_name='" . rawurlencode($var_name) . "'")) {
        $cur_row = mysql_fetch_array($rs);
        return rawurldecode($cur_row["var_val"]);
      }
    }
    return false;
  }
  function set_store_var($var_cat = "", $var_cat_qlfr = "", $var_name = "", $var_val = "") {
    if (isset($this->config['enable_vars']) && $this->config['enable_vars']) {
      $tbl_name = $this->config["prefix"] . "_store_var";

      /* delete if exists */
      $tmp = $this
        ->delete_store_var($var_cat, $var_cat_qlfr, $var_name);

      /* insert */
      return mysql_query("INSERT INTO " . $tbl_name . " (var_cat, var_cat_qlfr, var_name, var_val) VALUES ('" . rawurlencode($var_cat) . "', '" . md5($var_cat_qlfr) . "', '" . rawurlencode($var_name) . "', '" . rawurlencode($var_val) . "')");
    }
    return false;
  }
  function delete_store_var($var_cat = "", $var_cat_qlfr = "", $var_name = "") {
    if (isset($this->config['enable_vars']) && $this->config['enable_vars']) {
      $tbl_name = $this->config["prefix"] . "_store_var";
      return mysql_query("DELETE FROM " . $tbl_name . " WHERE var_cat='" . rawurlencode($var_cat) . "' AND var_cat_qlfr='" . md5($var_cat_qlfr) . "' AND var_name='" . rawurlencode($var_name) . "'");
    }
    return false;
  }
  function delete_store_vars($var_cat = "", $var_cat_qlfr = false) {
    if (isset($this->config['enable_vars']) && $this->config['enable_vars']) {
      $tbl_name = $this->config["prefix"] . "_store_var";
      if ($var_cat_qlfr === false) {
        return mysql_query("DELETE FROM " . $tbl_name . " WHERE var_cat='" . rawurlencode($var_cat) . "'");
      }
      else {
        return mysql_query("DELETE FROM " . $tbl_name . " WHERE var_cat='" . rawurlencode($var_cat) . "' AND var_cat_qlfr='" . md5($var_cat_qlfr) . "'");
      }
    }
  }

  /*					*/
  function get_graph_vars($g_hash = "") {
    $g_hash = !$g_hash || strpos($g_hash, ":") !== false ? md5($g_hash) : $g_hash;
    return $this
      ->get_store_vars("g", $g_hash);
  }
  function get_graph_var($g_hash = "", $var_name = "") {
    $g_hash = !$g_hash || strpos($g_hash, ":") !== false ? md5($g_hash) : $g_hash;
    return $this
      ->get_store_var("g", $g_hash, $var_name);
  }
  function set_graph_var($g_hash = "", $var_name = "", $var_val = "") {
    $g_hash = !$g_hash || strpos($g_hash, ":") !== false ? md5($g_hash) : $g_hash;
    return $this
      ->set_store_var("g", $g_hash, $var_name, $var_val);
  }
  function delete_graph_var($g_hash = "", $var_name = "") {
    $g_hash = !$g_hash || strpos($g_hash, ":") !== false ? md5($g_hash) : $g_hash;
    return $this
      ->delete_store_var("g", $g_hash, $var_name);
  }
  function delete_graph_vars($g_hash = "") {
    $g_hash = !$g_hash || strpos($g_hash, ":") !== false ? md5($g_hash) : $g_hash;
    return $this
      ->delete_store_vars("g", $g_hash);
  }

}

Classes

Name	Description
ARC_rdf_store