/**
* Create an appropriate POIConnector for a layer definition
*
* @param LayerDefinition $layerDefinition
*
* @return POIConnector
*/
protected static function getPOIConnectorFromDefinition(LayerDefinition $layerDefinition)
{
switch ($layerDefinition->getSourceType()) {
case LayerDefinition::DSN:
$poiConnector = new $layerDefinition->connector($layerDefinition->source["dsn"], $layerDefinition->source["username"], $layerDefinition->source["password"]);
break;
case LayerDefinition::FILE:
$poiConnector = new $layerDefinition->connector($layerDefinition->source);
break;
default:
throw new Exception(sprintf("Invalid source type: %d", $layerDefinition->getSourceType()));
}
foreach ($layerDefinition->connectorOptions as $optionName => $option) {
$poiConnector->setOption($optionName, $option);
}
return $poiConnector;
}
/**
* initialize private User persistence object
* @return void
* @param LayerDefinition $definition
*/
protected function userInit(LayerDefinition $definition)
{
// get data source.
// NOTE: only Database persistence implemented for now
if ($definition->getSourceType() === LayerDefinition::DSN) {
$source = $definition->source;
$this->user = new DbUser($source['dsn'], $source['username'], $source['password']);
} else {
$this->user = new DummyUser();
}
// try session
if (isset($_SESSION[$this->layerName . 'User'])) {
$this->user->fromJson($_SESSION[$this->layerName . 'User']);
return;
} elseif (isset($_COOKIE[$this->layerName . 'Id'])) {
// restore user data from persistent storage keyed by cookie
$this->user->getById($_COOKIE[$this->layerName . 'Id']);
$_SESSION[$this->layerName . 'User'] = $this->user->toJson();
} elseif (isset($_REQUEST['userId'])) {
// restore user data from persistent storage keyed by Layar UID
$this->user->getById($_REQUEST['userId']);
$_SESSION[$this->layerName . 'User'] = $this->user->toJson();
}
}
/**
* Load config from XML
*
* @param string $source Filename or XML string
* @param bool $fromString $source is an XML string, not a filename. Default FALSE
*
* @return void
* @throws Exception on XML failure
*/
public function load($source, $fromString = FALSE)
{
$this->source = $source;
$config = new SimpleXMLElement($this->source, 0, !$fromString);
if (!empty($config->{"developer-id"})) {
$this->developerID = (string) $config->{"developer-id"};
}
if (!empty($config->{"developer-key"})) {
$this->developerKey = (string) $config->{"developer-key"};
}
/* load the names of connector classes and which files they are in */
foreach ($config->xpath("connectors/connector") as $node) {
$this->connectors[(string) $node->name] = (string) $node->file;
}
/* load layers */
foreach ($config->xpath("layers/layer") as $node) {
$def = new LayerDefinition();
$def->name = (string) $node->name;
$def->connector = trim((string) $node->connector);
if (!empty($node->connector->options)) {
foreach ($node->connector->options->children() as $optionNode) {
$def->connectorOptions[$optionNode->getName()] = (string) $optionNode;
}
}
/* check to see if we need to load the connector */
if (!class_exists($def->connector)) {
/* include the connector's definition if it exists*/
if (!empty($this->connectors[$def->connector])) {
require_once $this->connectors[$def->connector];
} else {
throw new Exception(sprintf("Unknown connector: %s", $def->connector));
}
}
/* load the data source information */
if (isset($node->source->dsn)) {
$def->setSourceType(LayerDefinition::DSN);
$def->source["dsn"] = (string) $node->source->dsn;
if (isset($node->source->username)) {
$def->source["username"] = (string) $node->source->username;
}
if (isset($node->source->password)) {
$def->source["password"] = (string) $node->source->password;
}
} else {
$def->source = (string) $node->source;
}
/* web app configuration */
if (isset($node->web_app)) {
$def->web_app["name"] = (string) $node->web_app->name;
$def->web_app["file"] = (string) $node->web_app->file;
}
/* load OAuth settings */
if (isset($node->oauth)) {
$oauth = $def->oauth;
$oauth->setConsumerKey((string) $node->oauth->consumer_key);
$oauth->setSecretKey((string) $node->oauth->secret_key);
$baseUrl = (string) $node->oauth->baseUrl;
$oauth->setRequestTokenUrl($baseUrl . (string) $node->oauth->tokenPath->request);
$oauth->setAccessTokenUrl($baseUrl . (string) $node->oauth->tokenPath->access);
$oauth->setAuthorizeTokenUrl($baseUrl . (string) $node->oauth->tokenPath->authorize);
}
$this->layerDefinitions[] = $def;
}
}
