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<?php
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// $Id$
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/**
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* sparql.install - SPARQL API installation/uninstallation.
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*
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* @author Arto Bendiken <http://bendiken.net/>
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* @copyright Copyright (c) 2007-2008 Arto Bendiken. All rights reserved.
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* @license GPL <http://creativecommons.org/licenses/GPL/2.0/>
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* @package sparql.module
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*/
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//////////////////////////////////////////////////////////////////////////////
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// Core API hooks
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/**
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* Implementation of hook_enable().
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*/
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function sparql_enable() {
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drupal_set_message(t('SPARQL API successfully installed. Please review the available <a href="@settings">configuration settings</a>.', array('@settings' => url('admin/settings/sparql'))));
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}
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/**
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* Implementation of hook_install().
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*/
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function sparql_install() {
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drupal_install_schema('sparql');
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}
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/**
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* Implementation of hook_uninstall().
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*/
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function sparql_uninstall() {
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drupal_uninstall_schema('sparql');
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db_query("DELETE FROM {variable} WHERE name LIKE 'sparql_%'");
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cache_clear_all('variables', 'cache');
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}
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/**
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* Implementation of hook_requirements().
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*/
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function sparql_requirements($phase) {
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$requirements = array();
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$t = get_t(); // Ensure translations don't break at install time
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if ($phase == 'install') {
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if (!class_exists('ARC2')) {
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$requirements['arc2'] = array(
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'title' => '',
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'value' => '',
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'description' => $t('The ARC2 library is not installed. See the <a href="@status-report">status report</a> for information on how to install this library.', array('@status-report' => url('admin/reports/status'))),
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'severity' => REQUIREMENT_ERROR,
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);
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}
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}
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return $requirements;
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}
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//////////////////////////////////////////////////////////////////////////////
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// Schema API hooks
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/**
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* Implementation of hook_schema().
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*/
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function sparql_schema() {
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return array(
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'sparql_nodes' => array(
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'description' => t('Stores SPARQL node data.'),
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'fields' => array(
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'nid' => array(
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'description' => t("The node's ID from {node}.nid."),
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'type' => 'int',
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'unsigned' => TRUE,
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'not null' => TRUE,
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'default' => 0,
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),
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'vid' => array(
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'description' => t("The node's version ID from {node}.vid."),
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'type' => 'int',
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'unsigned' => TRUE,
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'not null' => TRUE,
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'default' => 0,
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),
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'endpoint' => array(
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'description' => t("The SPARQL endpoint's URL."),
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'type' => 'text',
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),
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'query' => array(
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'description' => t("The SPARQL query."),
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'type' => 'text',
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'size' => 'big',
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),
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),
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'primary key' => array('nid', 'vid'),
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),
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);
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}
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//////////////////////////////////////////////////////////////////////////////
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// Schema API updates
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/**
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* Installs the database schema; this is necessary when upgrading from any
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* version prior to 6.x-1.0-alpha2.
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*
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* @see http://drupal.org/node/150215
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* @see http://drupal.org/node/150220
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*/
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function sparql_update_6000() {
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$updates = array();
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db_create_table($updates, 'sparql_nodes', array(
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'description' => t('Stores SPARQL node data.'),
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'fields' => array(
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'nid' => array(
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'description' => t("The node's ID from {node}.nid."),
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'type' => 'int',
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'unsigned' => TRUE,
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'not null' => TRUE,
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'default' => 0,
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),
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'vid' => array(
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'description' => t("The node's version ID from {node}.vid."),
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'type' => 'int',
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'unsigned' => TRUE,
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'not null' => TRUE,
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'default' => 0,
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),
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'endpoint' => array(
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'description' => t("The SPARQL endpoint's URL."),
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'type' => 'text',
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),
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'query' => array(
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'description' => t("The SPARQL query."),
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'type' => 'text',
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'size' => 'big',
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),
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),
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'primary key' => array('nid', 'vid'),
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));
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return $updates;
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}
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/**
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* Converts SPARQL node data from early 6.x-dev format to 6.x-1.0-alpha2.
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*/
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function sparql_update_6001() {
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$updates = array();
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$result = db_query("SELECT nid, vid FROM {node} WHERE type = 'sparql' ORDER BY nid ASC");
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while ($node = db_fetch_object($result)) {
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$query = variable_get('sparql_node_' . $node->nid . '_query', '');
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$endpoint = variable_get('sparql_node_' . $node->nid . '_endpoint', '');
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if (db_query("INSERT INTO {sparql_nodes} (nid, vid, endpoint, query) VALUES (%d, %d, '%s', '%s')", $node->nid, $node->vid, $endpoint, $query)) {
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variable_del('sparql_node_' . $node->nid . '_query');
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variable_del('sparql_node_' . $node->nid . '_endpoint');
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}
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}
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return $updates;
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}
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