def _update_keywords(self, **update_props):
""" Update operation for ISO type-specific Keywords metadata: Theme or Place """
tree_to_update = update_props['tree_to_update']
prop = update_props['prop']
values = update_props['values']
keywords = []
if prop in [KEYWORDS_PLACE, KEYWORDS_THEME]:
xpath_root = self._data_map['_keywords_root']
xpath_map = self._data_structures[update_props['prop']]
xtype = xpath_map['keyword_type']
xroot = xpath_map['keyword_root']
xpath = xpath_map['keyword']
if prop == KEYWORDS_PLACE:
ktype = KEYWORD_TYPE_PLACE
elif prop == KEYWORDS_THEME:
ktype = KEYWORD_TYPE_THEME
# Remove descriptiveKeyword nodes according to type
for element in get_elements(tree_to_update, xpath_root):
if get_element_text(element, xtype).lower() == ktype.lower():
remove_element(tree_to_update, xpath_root)
element = insert_element(tree_to_update, 0, xpath_root)
insert_element(element, 0, xtype, ktype) # Add the type node
keywords.extend(update_property(element, xroot, xpath, prop, values))
return keywords
def _update_keywords(self, **update_props):
""" Update operation for ISO type-specific Keywords metadata: Theme or Place """
tree_to_update = update_props['tree_to_update']
prop = update_props['prop']
values = update_props['values']
keywords = []
if prop in KEYWORD_PROPS:
xpath_root = self._data_map['_keywords_root']
xpath_map = self._data_structures[prop]
xtype = xpath_map['keyword_type']
xroot = xpath_map['keyword_root']
xpath = xpath_map['keyword']
ktype = KEYWORD_TYPES[prop]
# Remove descriptiveKeyword nodes according to type
for element in get_elements(tree_to_update, xpath_root):
if get_element_text(element, xtype).lower() == ktype.lower():
remove_element(tree_to_update, xpath_root)
element = insert_element(tree_to_update, 0, xpath_root)
insert_element(element, 0, xtype, ktype) # Add the type node
keywords.extend(update_property(element, xroot, xpath, prop, values))
return keywords
def update_element(elem, idx, root, path, vals):
""" Internal helper function to encapsulate single item update """
has_root = bool(root and len(path) > len(root) and path.startswith(root))
path, attr = get_xpath_tuple(path) # 'path/@attr' to ('path', 'attr')
if attr:
removed = [get_element(elem, path)]
remove_element_attributes(removed[0], attr)
elif not has_root:
removed = wrap_value(remove_element(elem, path))
else:
path = get_xpath_branch(root, path)
removed = [] if idx != 0 else [remove_element(e, path, True) for e in get_elements(elem, root)]
if not vals:
return removed
items = []
for i, val in enumerate(wrap_value(vals)):
elem_to_update = elem
if has_root:
elem_to_update = insert_element(elem, (i + idx), root)
val = val.decode('utf-8') if not isinstance(val, string_types) else val
if not attr:
items.append(insert_element(elem_to_update, i, path, val))
else:
items.append(insert_element(elem_to_update, i, path, **{attr: val}))
return items
def test_arcgis_parser(self):
""" Tests behavior unique to the FGDC parser """
# Test dates structure defaults
# Remove multiple dates to ensure range is queried
arcgis_element = get_remote_element(self.arcgis_file)
remove_element(arcgis_element, "dataIdInfo/dataExt/tempEle/TempExtent/exTemp/TM_Instant", True)
# Assert that the backup dates are read in successfully
arcgis_parser = ArcGISParser(element_to_string(arcgis_element))
self.assertEqual(arcgis_parser.dates, {"type": "range", "values": ["Date Range Start", "Date Range End"]})
# Remove one of the date range values and assert that only the end date is read in as a single
remove_element(arcgis_element, "dataIdInfo/dataExt/tempEle/TempExtent/exTemp/TM_Period/tmBegin", True)
arcgis_parser = ArcGISParser(element_to_string(arcgis_element))
self.assertEqual(arcgis_parser.dates, {"type": "single", "values": ["Date Range End"]})
# Remove the last of the date range values and assert that no dates are read in
remove_element(arcgis_element, "dataIdInfo/dataExt/tempEle/TempExtent/exTemp/TM_Period", True)
arcgis_parser = ArcGISParser(element_to_string(arcgis_element))
self.assertEqual(arcgis_parser.dates, {})
# Insert a single date value and assert that only it is read in
single_path = "dataIdInfo/dataExt/tempEle/TempExtent/exTemp/TM_Instant/tmPosition"
single_text = "Single Date"
insert_element(arcgis_element, 0, single_path, single_text)
arcgis_parser = ArcGISParser(element_to_string(arcgis_element))
self.assertEqual(arcgis_parser.dates, {"type": "single", "values": [single_text]})
def _update_report_item(self, **update_props):
""" Update the text for each element at the configured path if attribute matches """
tree_to_update = update_props['tree_to_update']
prop = update_props['prop']
values = wrap_value(update_props['values'])
xroot = self._get_xroot_for(prop)
attr_key = 'type'
attr_val = u''
if prop == 'attribute_accuracy':
attr_val = 'DQQuanAttAcc'
elif prop == 'dataset_completeness':
attr_val = 'DQCompOm'
# Clear (make empty) all elements of the appropriate type
for elem in get_elements(tree_to_update, xroot):
if get_element_attributes(elem).get(attr_key) == attr_val:
clear_element(elem)
# Remove all empty elements, including those previously cleared
remove_empty_element(tree_to_update, xroot)
# Insert elements with correct attributes for each new value
attrs = {attr_key: attr_val}
updated = []
for idx, value in enumerate(values):
elem = insert_element(tree_to_update, idx, xroot, **attrs)
updated.append(insert_element(elem, idx, 'measDesc', value))
return updated
def _update_report_item(self, **update_props):
""" Update the text for each element at the configured path if attribute matches """
tree_to_update = update_props['tree_to_update']
prop = update_props['prop']
values = wrap_value(update_props['values'])
xroot = self._get_xroot_for(prop)
attr_key = 'type'
attr_val = u''
if prop == 'attribute_accuracy':
attr_val = 'DQQuanAttAcc'
elif prop == 'dataset_completeness':
attr_val = 'DQCompOm'
# Clear (make empty) all elements of the appropriate type
for elem in get_elements(tree_to_update, xroot):
if get_element_attributes(elem).get(attr_key) == attr_val:
clear_element(elem)
# Remove all empty elements, including those previously cleared
remove_empty_element(tree_to_update, xroot)
# Insert elements with correct attributes for each new value
attrs = {attr_key: attr_val}
updated = []
for idx, value in enumerate(values):
elem = insert_element(tree_to_update, idx, xroot, **attrs)
updated.append(insert_element(elem, idx, 'measDesc', value))
return updated
def update_complex_list(tree_to_update, xpath_root, xpath_map, prop, values):
"""
Updates and returns the list of updated complex Elements parsed from tree_to_update.
:param tree_to_update: the XML tree compatible with element_utils to be updated
:param xpath_root: the XPATH location of each complex Element
:param xpath_map: a Dictionary of XPATHs corresponding to the complex structure definition
:param prop: the property identifying the complex structure to be serialized
:param values: a List containing the updated complex structures as Dictionaries
"""
complex_list = []
remove_element(tree_to_update, xpath_root, True)
if not values:
# Returns the elements corresponding to property removed from the tree
complex_list.append(update_property(tree_to_update, xpath_root, xpath_root, prop, values))
else:
for idx, complex_struct in enumerate(wrap_value(values)):
# Insert a new complex element root for each dict in the list
complex_element = insert_element(tree_to_update, idx, xpath_root)
for subprop, value in iteritems(complex_struct):
xpath = get_xpath_branch(xpath_root, xpath_map[subprop])
value = get_default_for_complex_sub(prop, subprop, value, xpath)
complex_list.append(update_property(complex_element, None, xpath, subprop, value))
return complex_list
def update_complex_list(tree_to_update, xpath_root, xpath_map, prop, values):
"""
Updates and returns the list of updated complex Elements parsed from tree_to_update.
:param tree_to_update: the XML tree compatible with element_utils to be updated
:param xpath_root: the XPATH location of each complex Element
:param xpath_map: a Dictionary of XPATHs corresponding to the complex structure definition
:param prop: the property identifying the complex structure to be serialized
:param values: a List containing the updated complex structures as Dictionaries
"""
complex_list = []
remove_element(tree_to_update, xpath_root, True)
if not values:
# Returns the elements corresponding to property removed from the tree
complex_list.append(
update_property(tree_to_update, xpath_root, xpath_root, prop,
values))
else:
for idx, complex_struct in enumerate(wrap_value(values)):
# Insert a new complex element root for each dict in the list
complex_element = insert_element(tree_to_update, idx, xpath_root)
for subprop, value in iteritems(complex_struct):
xpath = get_xpath_branch(xpath_root, xpath_map[subprop])
value = get_default_for_complex_sub(prop, subprop, value,
xpath)
complex_list.append(
update_property(complex_element, None, xpath, subprop,
value))
return complex_list
def update_element(elem, idx, root, path, vals):
""" Internal helper function to encapsulate single item update """
has_root = bool(root and len(path) > len(root)
and path.startswith(root))
path, attr = get_xpath_tuple(path) # 'path/@attr' to ('path', 'attr')
if attr:
removed = [get_element(elem, path)]
remove_element_attributes(removed[0], attr)
elif not has_root:
removed = wrap_value(remove_element(elem, path))
else:
path = get_xpath_branch(root, path)
removed = [] if idx != 0 else [
remove_element(e, path, True)
for e in get_elements(elem, root)
]
if not vals:
return removed
items = []
for i, val in enumerate(wrap_value(vals)):
elem_to_update = elem
if has_root:
elem_to_update = insert_element(elem, (i + idx), root)
val = val.decode('utf-8') if not isinstance(val,
string_types) else val
if not attr:
items.append(insert_element(elem_to_update, i, path, val))
elif path:
items.append(
insert_element(elem_to_update, i, path, **{attr: val}))
else:
set_element_attributes(elem_to_update, **{attr: val})
items.append(elem_to_update)
return items
