def __init__(self, where_pattern=None):
super(SPARQLUpdateQuery, self).__init__(where_pattern)
self._delete = GroupGraphPattern([])
self._insert = GroupGraphPattern([])
# delete() can be called without graph pattern (DELETE WHERE), so we have to distinguish
# between absent delete and delete without arguments (empty_delete)
self.empty_delete = False
def delete(self, pattern=None, return_clone=True): # Empty delete pattern means DELETE WHERE
clone = self._clone() if return_clone else self
if pattern is None:
clone.empty_delete = True
return clone
elif not isinstance(pattern, GroupGraphPattern):
pattern = GroupGraphPattern.from_obj(pattern)
clone._delete.pattern(pattern)
return clone
def delete(self, pattern=None): # Empty delete pattern means DELETE WHERE
clone = self._clone()
if pattern is None:
clone.empty_delete = True
return clone
elif not isinstance(pattern, GroupGraphPattern):
pattern = GroupGraphPattern.from_obj(pattern)
clone._delete.pattern(pattern)
return clone
def template(self, query):
yield '{'
template = query._template
if isinstance(template, basestring):
yield template
else:
if not isinstance(template, GraphPattern):
template = GroupGraphPattern.from_obj(template)
for token in self.graph_pattern(template, False):
yield token
yield '}'
def template(self, query):
yield '{'
template = query._template
if isinstance(template, basestring):
yield template
else:
if not isinstance(template, GraphPattern):
template = GroupGraphPattern.from_obj(template)
for token in self.graph_pattern(template, False):
yield token
yield '}'
def where(self, *patterns, **kwargs):
"""Return a new `Select` with the given patterns in the WHERE clause.
Each argument may be a triple (a 3-tuple or `Triple` instances) or a
`GraphPattern` instance. The patterns are added to the WHERE clause in
the order specified.
If the keyword-only `optional` argument is true, add all given patterns
to an OPTIONAL graph pattern.
"""
clone = self._clone()
if patterns:
graph_pattern = GroupGraphPattern.from_obj(patterns, **kwargs)
clone._where.pattern(graph_pattern)
return clone
def where(self, *patterns, **kwargs):
"""Return a new `Select` with the given patterns in the WHERE clause.
Each argument may be a triple (a 3-tuple or `Triple` instances) or a
`GraphPattern` instance. The patterns are added to the WHERE clause in
the order specified.
If the keyword-only `optional` argument is true, add all given patterns
to an OPTIONAL graph pattern.
"""
clone = self._clone()
if patterns:
graph_pattern = GroupGraphPattern.from_obj(patterns, **kwargs)
clone._where.pattern(graph_pattern)
return clone
def optional(*patterns):
from sparqlquery.sparql.patterns import GroupGraphPattern
return GroupGraphPattern(patterns, optional=True)
def insert(self, pattern, return_clone=True):
clone = self._clone() if return_clone else self
if not isinstance(pattern, GroupGraphPattern):
pattern = GroupGraphPattern.from_obj(pattern)
clone._insert.pattern(pattern)
return clone
def __init__(self, pattern=None):
if pattern is None:
pattern = GroupGraphPattern([])
elif not isinstance(pattern, GroupGraphPattern):
pattern = GroupGraphPattern.from_obj(pattern)
self._where = pattern
def insert(self, pattern):
clone = self._clone()
if not isinstance(pattern, GroupGraphPattern):
pattern = GroupGraphPattern.from_obj(pattern)
clone._insert.pattern(pattern)
return clone
def __init__(self, pattern=None):
if pattern is None:
pattern = GroupGraphPattern([])
elif not isinstance(pattern, GroupGraphPattern):
pattern = GroupGraphPattern.from_obj(pattern)
self._where = pattern