Your IP : 192.168.165.1
<?php
namespace IMSGlobal\LTI\ToolProvider\DataConnector;
use IMSGlobal\LTI\ToolProvider;
use IMSGlobal\LTI\ToolProvider\Context;
use IMSGlobal\LTI\ToolProvider\ToolConsumer;
use PDO;
/**
* Class to represent an LTI Data Connector for PDO variations for SQLite connections
*
* @author Stephen P Vickers <svickers@imsglobal.org>
* @copyright IMS Global Learning Consortium Inc
* @date 2016
* @version 3.0.0
* @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
*/
class DataConnector_pdo_sqlite extends DataConnector_pdo
{
###
### ToolConsumer methods
###
/**
* Delete tool consumer object.
*
* @param ToolConsumer $consumer Consumer object
*
* @return boolean True if the tool consumer object was successfully deleted
*/
public function deleteToolConsumer($consumer)
{
$id = $consumer->getRecordId();
// Delete any nonce values for this consumer
$sql = "DELETE FROM {$this->dbTableNamePrefix}" . DataConnector::NONCE_TABLE_NAME . ' WHERE consumer_pk = :id';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$query->execute();
// Delete any outstanding share keys for resource links for this consumer
$sql = "DELETE FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_SHARE_KEY_TABLE_NAME . ' ' .
"WHERE EXISTS (SELECT * FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' rl ' .
"WHERE ({$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_SHARE_KEY_TABLE_NAME . '.resource_link_pk = rl.resource_link_pk) AND (rl.consumer_pk = :id))';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$query->execute();
// Delete any outstanding share keys for resource links for contexts in this consumer
$sql = "DELETE FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_SHARE_KEY_TABLE_NAME . ' ' .
"WHERE EXISTS (SELECT * FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' rl ' .
"INNER JOIN {$this->dbTableNamePrefix}" . DataConnector::CONTEXT_TABLE_NAME . ' c ON rl.context_pk = c.context_pk ' .
"WHERE ({$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_SHARE_KEY_TABLE_NAME . '.resource_link_pk = rl.resource_link_pk) AND (c.consumer_pk = :id))';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$query->execute();
// Delete any users in resource links for this consumer
$sql = "DELETE FROM {$this->dbTableNamePrefix}" . DataConnector::USER_RESULT_TABLE_NAME . ' ' .
"WHERE EXISTS (SELECT * FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' rl ' .
"WHERE ({$this->dbTableNamePrefix}" . DataConnector::USER_RESULT_TABLE_NAME . '.resource_link_pk = rl.resource_link_pk) AND (rl.consumer_pk = :id))';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$query->execute();
// Delete any users in resource links for contexts in this consumer
$sql = "DELETE FROM {$this->dbTableNamePrefix}" . DataConnector::USER_RESULT_TABLE_NAME . ' ' .
"WHERE EXISTS (SELECT * FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' rl ' .
"INNER JOIN {$this->dbTableNamePrefix}" . DataConnector::CONTEXT_TABLE_NAME . ' c ON rl.context_pk = c.context_pk ' .
"WHERE ({$this->dbTableNamePrefix}" . DataConnector::USER_RESULT_TABLE_NAME . '.resource_link_pk = rl.resource_link_pk) AND (c.consumer_pk = :id))';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$query->execute();
// Update any resource links for which this consumer is acting as a primary resource link
$sql = "UPDATE {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' ' .
'SET primary_resource_link_pk = NULL, share_approved = NULL ' .
"WHERE EXISTS (SELECT * FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' rl ' .
"WHERE ({$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . '.primary_resource_link_pk = rl.resource_link_pk) AND (rl.consumer_pk = :id))';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$query->execute();
// Update any resource links for contexts in which this consumer is acting as a primary resource link
$sql = "UPDATE {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' ' .
'SET primary_resource_link_pk = NULL, share_approved = NULL ' .
"WHERE EXISTS (SELECT * FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' rl ' .
"INNER JOIN {$this->dbTableNamePrefix}" . DataConnector::CONTEXT_TABLE_NAME . ' c ON rl.context_pk = c.context_pk ' .
"WHERE ({$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . '.primary_resource_link_pk = rl.resource_link_pk) AND (c.consumer_pk = :id))';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$query->execute();
// Delete any resource links for this consumer
$sql = "DELETE FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' ' .
'WHERE consumer_pk = :id';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$query->execute();
// Delete any resource links for contexts in this consumer
$sql = "DELETE FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' ' .
"WHERE EXISTS (SELECT * FROM {$this->dbTableNamePrefix}" . DataConnector::CONTEXT_TABLE_NAME . ' c ' .
"WHERE ({$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . '.context_pk = c.context_pk) AND (c.consumer_pk = :id))';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$query->execute();
// Delete any contexts for this consumer
$sql = "DELETE FROM {$this->dbTableNamePrefix}" . DataConnector::CONTEXT_TABLE_NAME . ' ' .
'WHERE consumer_pk = :id';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$query->execute();
// Delete consumer
$sql = "DELETE FROM {$this->dbTableNamePrefix}" . DataConnector::CONSUMER_TABLE_NAME . ' ' .
'WHERE consumer_pk = :id';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$ok = $query->execute();
if ($ok) {
$consumer->initialize();
}
return $ok;
}
###
### Context methods
###
/**
* Delete context object.
*
* @param Context $context Context object
*
* @return boolean True if the Context object was successfully deleted
*/
public function deleteContext($context)
{
$id = $context->getRecordId();
// Delete any outstanding share keys for resource links for this context
$sql = "DELETE FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_SHARE_KEY_TABLE_NAME . ' ' .
"WHERE EXISTS (SELECT * FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' rl ' .
"WHERE ({$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_SHARE_KEY_TABLE_NAME . '.resource_link_pk = rl.resource_link_pk) AND (rl.context_pk = :id))';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$query->execute();
// Delete any users in resource links for this context
$sql = "DELETE FROM {$this->dbTableNamePrefix}" . DataConnector::USER_RESULT_TABLE_NAME . ' ' .
"WHERE EXISTS (SELECT * FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' rl ' .
"WHERE ({$this->dbTableNamePrefix}" . DataConnector::USER_RESULT_TABLE_NAME . '.resource_link_pk = rl.resource_link_pk) AND (rl.context_pk = :id))';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$query->execute();
// Update any resource links for which this consumer is acting as a primary resource link
$sql = "UPDATE {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' ' .
'SET primary_resource_link_pk = null, share_approved = null ' .
"WHERE EXISTS (SELECT * FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' rl ' .
"WHERE ({$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . '.primary_resource_link_pk = rl.resource_link_pk) AND (rl.context_pk = :id))';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$query->execute();
// Delete any resource links for this consumer
$sql = "DELETE FROM {$this->dbTableNamePrefix}" . DataConnector::RESOURCE_LINK_TABLE_NAME . ' ' .
'WHERE context_pk = :id';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$query->execute();
// Delete context
$sql = "DELETE FROM {$this->dbTableNamePrefix}" . DataConnector::CONTEXT_TABLE_NAME . ' ' .
'WHERE context_pk = :id';
$query = $this->db->prepare($sql);
$query->bindValue('id', $id, PDO::PARAM_INT);
$ok = $query->execute();
if ($ok) {
$context->initialize();
}
return $ok;
}
}