def _cb_get_element(self, response, uri):
"""This is called when the document related to the element is retrieved."""
if response.code == 404: ## XXX why not let the storage raise?
raise errors.ResourceNotFound("The requested document %s was not found on this server" % uri.doc_selector)
result = element.get(response.data, uri.node_selector.element_selector)
if not result:
msg = "The requested element %s was not found in the document %s" % (uri.node_selector, uri.doc_selector)
raise errors.ResourceNotFound(msg)
return StatusResponse(200, response.etag, result)
def _cb_delete_element(self, response, uri, check_etag):
if response.code == 404:
raise errors.ResourceNotFound("The requested document %s was not found on this server" % uri.doc_selector)
new_document = element.delete(response.data, uri.node_selector.element_selector)
if not new_document:
raise errors.ResourceNotFound
get_result = element.find(new_document, uri.node_selector.element_selector)
if get_result:
raise errors.CannotDeleteError('DELETE request failed GET(DELETE(x))==404 invariant')
return self.put_document(uri, new_document, check_etag)
def _cb_delete_attribute(self, response, uri, check_etag):
if response.code == 404:
raise errors.ResourceNotFound
document = response.data
xml_doc = etree.parse(StringIO(document))
application = getApplicationForURI(uri)
ns_dict = uri.node_selector.get_ns_bindings(application.default_ns)
try:
elem = xml_doc.xpath(uri.node_selector.replace_default_prefix(append_terminal=False),namespaces=ns_dict)
except Exception, ex:
ex.http_error = errors.ResourceNotFound()
raise
def _cb_get_ns_bindings(self, response, uri):
"""This is called when the document that relates to the element is retrieved."""
if response.code == 404:
raise errors.ResourceNotFound
document = response.data
xml_doc = etree.parse(StringIO(document))
application = getApplicationForURI(uri)
ns_dict = uri.node_selector.get_ns_bindings(application.default_ns)
try:
elem = xml_doc.xpath(uri.node_selector.replace_default_prefix(append_terminal=False),namespaces=ns_dict)
except Exception, ex:
ex.http_error = errors.ResourceNotFound()
raise
def put_document(self, uri, document, check_etag):
raise errors.ResourceNotFound("This application does not support PUT method")
def _not_implemented(self, context):
raise errors.ResourceNotFound("Application %s does not implement %s context" % (self.id, context))
if response.code == 404:
raise errors.ResourceNotFound
document = response.data
xml_doc = etree.parse(StringIO(document))
application = getApplicationForURI(uri)
ns_dict = uri.node_selector.get_ns_bindings(application.default_ns)
try:
xpath = uri.node_selector.replace_default_prefix()
attribute = xml_doc.xpath(xpath, namespaces = ns_dict)
except Exception, ex:
ex.http_error = errors.ResourceNotFound()
raise
if not attribute:
raise errors.ResourceNotFound
elif len(attribute) != 1:
raise errors.ResourceNotFound('XPATH expression is ambiguous')
# TODO
# The server MUST NOT add namespace bindings representing namespaces
# used by the element or its children, but declared in ancestor elements
return StatusResponse(200, response.etag, attribute[0])
def get_attribute(self, uri, check_etag):
d = self.get_document(uri, check_etag)
return d.addCallbacks(self._cb_get_attribute, callbackArgs=(uri, ))
def _cb_delete_attribute(self, response, uri, check_etag):
if response.code == 404:
raise errors.ResourceNotFound
document = response.data
xml_doc = etree.parse(StringIO(document))
application = getApplicationForURI(uri)
def delete_document(self, uri, document, check_etag):
raise errors.ResourceNotFound(
"This application does not support DELETE method")
