def __init__(self, filter_label=None, filter_attr_map={}):
"""
load an id-set of links
@param filter_label: link type filter
@param filter_attr_map: is a filter_key to filter_value_set map of
attributes to match link properties against
@return: a set of loaded link ids
"""
super(DBO_match_link_id_set, self).__init__()
q_arr = [
'match ()-[r{filter_label} {filter_attr}]->()', 'return id(r)'
]
q = ' '.join(q_arr)
q = cfmt(q,
filter_label="" if not filter_label else ":" + filter_label)
q = cfmt(
q,
filter_attr=db_util.gen_clause_attr_filter_from_filter_attr_map(
filter_attr_map))
q_params = {k: v[0]
for (k, v) in filter_attr_map.items()
} # pass on only first value from each value set
self.add_statement(q, q_params)
def __init__(self, filter_label=None, filter_attr_map={}):
"""
match a set of nodes by type / attr_map
@param filter_label: node type filter
@param filter_attr_map: is a filter_key to filter_value_set map of
possible attributes to match against, eg.:
{ 'id':[0,1], 'color: ['red','blue'] }
@return: a set of node DB id's
"""
super(DBO_match_node_id_set, self).__init__()
q = "match (n{filter_label}) {where_clause} return id(n)"
q = cfmt(q, filter_label="" if not filter_label else ":" + filter_label)
q = cfmt(q, where_clause=db_util.gen_clause_where_from_filter_attr_map(filter_attr_map))
q_params = filter_attr_map
self.add_statement(q, q_params)
def __init__(self, filter_label=None, filter_attr_map={}):
"""
load an id-set of links
@param filter_label: link type filter
@param filter_attr_map: is a filter_key to filter_value_set map of
attributes to match link properties against
@return: a set of loaded link ids
"""
super(DBO_match_link_id_set, self).__init__()
q_arr = ['match ()-[r{filter_label} {filter_attr}]->()',
'return id(r)'
]
q = ' '.join(q_arr)
q = cfmt(q, filter_label="" if not filter_label else ":" + filter_label)
q = cfmt(q, filter_attr=db_util.gen_clause_attr_filter_from_filter_attr_map(filter_attr_map))
q_params = {k: v[0] for (k, v) in filter_attr_map.items()} # pass on only first value from each value set
self.add_statement(q, q_params)
def __init__(self, filter_label=None, filter_attr_map={}):
"""
match a set of nodes by type / attr_map
@param filter_label: node type filter
@param filter_attr_map: is a filter_key to filter_value_set map of
possible attributes to match against, eg.:
{ 'id':[0,1], 'color: ['red','blue'] }
@return: a set of node DB id's
"""
super(DBO_match_node_id_set, self).__init__()
q = "match (n{filter_label}) {where_clause} return id(n)"
q = cfmt(q,
filter_label="" if not filter_label else ":" + filter_label)
q = cfmt(q,
where_clause=db_util.gen_clause_where_from_filter_attr_map(
filter_attr_map))
q_params = filter_attr_map
self.add_statement(q, q_params)