public function getReadStream2($entity, ResourceStreamInfo $resourceStreamInfo, $eTag, $checkETagForEquality, $operationContext)
{
if (!is_null($checkETagForEquality)) {
throw new ODataException('This service does not support the ETag header for a media resource', 400);
}
if (!$entity instanceof Employee) {
throw new ODataException('Internal Server Error.', 500);
}
//echo getcwd(); exit;
$filePath = 'D:\\Projects\\ODataPHPProducer Yash\\Tests\\Resources\\NorthWind3\\images\\Employee_' . $entity->EmployeeID . '_' . $resourceStreamInfo->getName() . '.png';
if (file_exists($filePath)) {
$handle = fopen($filePath, 'r');
$stream = fread($handle, filesize($filePath));
fclose($handle);
return $stream;
} else {
throw new ODataException('The image file could not be found', 500);
}
}
/**
* Add a named stream belongs to this resource type instance
*
* @param ResourceStreamInfo $namedStream ResourceStreamInfo instance describing
* the named stream to add.
*
* @return void
*
* @throws InvalidOperationException
*/
public function addNamedStream(ResourceStreamInfo $namedStream)
{
if ($this->_resourceTypeKind != ResourceTypeKind::ENTITY) {
throw new InvalidOperationException(Messages::resourceTypeNamedStreamsOnlyApplyToEntityType());
}
$name = $namedStream->getName();
foreach (array_keys($this->_namedStreamsDeclaredOnThisType) as $namedStreamName) {
if (strcasecmp($namedStreamName, $name) == 0) {
throw new InvalidOperationException(Messages::resourceTypeNamedStreamWithSameNameAlreadyExists($name, $this->_name));
}
}
$this->_namedStreamsDeclaredOnThisType[$name] = $namedStream;
// Set $this->_allNamedStreams to null, the first call to getAllNamedStreams
// will initilaize $this->_allNamedStreams, further call to
// getAllNamedStreams will not reinitialize _allNamedStreams
// so if addNamedStream is called after calling getAllNamedStreams then the
// property just added will not be reflected in $this->_allNamedStreams
unset($this->_allNamedStreams);
$this->_allNamedStreams = array();
}
/**
* This method is invoked by the data services framework to retrieve the named stream
* associated with the entity instance specified by the entity parameter.
*
* @param object $entity The stream returned should be the default
* stream associated with this entity instance.
* @param ResourceStreamInfo $resourceStreamInfo The ResourceStreamInfo instance that describes
* the named stream.
* @param string $eTag The etag value sent by the client (as the
* value of an If[-None-]Match header) as part
* of the HTTP request, This parameter will be
* null if no If[-None-]Match header was present.
* @param boolean $checkETagForEquality True if an value of the etag parameter was sent
* to the server as the value of an If-Match HTTP
* request header, False if an value of the etag
* parameter was sent to the server as the the value
* of an If-None-Match HTTP request header null if
* the HTTP request for the stream was not a
* conditional request.
* @param WebOperationContext $operationContext A reference to the context for the current operation.
*
* @return mixed A valid stream the data service use to query/read a named stream which is
* associated with the $entity. Null may be returned from this method if the requested named
* stream has not been created since the creation of $entity. The data service will respond
* with 204 if this method returns null.
*
* @throws ODataException if a valid stream or null cannot be returned for the given arguments.
*/
public function getReadStream2($entity, ResourceStreamInfo $resourceStreamInfo, $eTag, $checkETagForEquality, $operationContext)
{
/**
if (!is_null($checkETagForEquality)) {
throw new ODataException(
'This service does not support the ETag header for a media resource',
400
);
}
**/
if (!$entity instanceof Employee) {
throw new ODataException('Internal Server Error.', 500);
}
$filePath = self::IMAGE_PATH_ROOT . 'Employee_' . $entity->EmployeeID . '_' . $resourceStreamInfo->getName() . '.png';
if (file_exists($filePath)) {
$handle = fopen($filePath, 'r');
$stream = fread($handle, filesize($filePath));
fclose($handle);
return $stream;
} else {
throw new ODataException('The image file could not be found', 500);
}
}
