def __init__(self, rzdoc):
"""
Rhizi version control - initialize meta namespace block chain
"""
super(DBO_block_chain__init, self).__init__()
#
# setup meta rzdoc NS
#
meta_ns_label_q = quote__backtick(rzdoc__meta_ns_label(rzdoc))
q_arr = ['create (n:%s:%s:%s {commit_attr})' % (meta_ns_label_q,
neo4j_schema.META_LABEL__VC_HEAD,
neo4j_schema.META_LABEL__VC_COMMIT,
),
'set n.ts_created=timestamp()', ]
hash_value = neo4j_schema.META_LABEL__VC_EMPTY_RZDOC_HASH
param_set = {'commit_attr': {
'blob': '',
'hash': hash_value,
'id': hash_value,
'name': 'root-commit'},
}
db_q = DB_Query(q_arr, param_set)
self.add_db_query(db_q)
def __init__(self, rzdoc):
"""
Rhizi version control - initialize meta namespace block chain
"""
super(DBO_block_chain__init, self).__init__()
#
# setup meta rzdoc NS
#
meta_ns_label_q = quote__backtick(rzdoc__meta_ns_label(rzdoc))
q_arr = [
'create (n:%s:%s:%s {commit_attr})' % (
meta_ns_label_q,
neo4j_schema.META_LABEL__VC_HEAD,
neo4j_schema.META_LABEL__VC_COMMIT,
),
'set n.ts_created=timestamp()',
]
hash_value = neo4j_schema.META_LABEL__VC_EMPTY_RZDOC_HASH
param_set = {
'commit_attr': {
'blob': '',
'hash': hash_value,
'id': hash_value,
'name': 'root-commit'
},
}
db_q = DB_Query(q_arr, param_set)
self.add_db_query(db_q)
def __init__(self, rzdoc):
"""
delete a rhizi doc
"""
super(DBO_rzdoc__delete, self).__init__()
rzdoc_label_q = quote__backtick(rzdoc__ns_label(rzdoc))
rzdoc_id_q = quote__singlequote(rzdoc.id)
# delete doc nodes & links
q_arr = [
'match (n:%s)' % (rzdoc_label_q),
'optional match (n:%s)-[r]-()' % (rzdoc_label_q), 'delete r,n'
]
db_q = DB_Query(q_arr)
self.add_db_query(db_q)
# delete doc meta node
q_arr = [
'match (n:%s {id: %s})' %
(neo4j_schema.META_LABEL__RZDOC_TYPE, rzdoc_id_q),
'optional match (n)-[r]-()', 'delete r,n'
]
db_q = DB_Query(q_arr)
self.add_db_query(db_q)
def add_link_rename_statements(self, id_attr, new_label):
# TODO - where do we sanitize the label name? any better way of doing this?
# XXX - the return here is a bit verbose? maybe better built on python side?
# NONGOALS: doing this on the client.
# Should assert the following returns 1
# match n-[l:new_label]->m return count(l)
# Not doing so to avoid roundtrip - the following doesn't require knowing
# the replaced label.
q_create_new = ["match (n)-[l_old {id: {id}}]->(m)",
"create (n)-[l_new:%s]->(m) set l_new=l_old" % db_util.quote__backtick(new_label),
"return l_new.id, {id: l_new.id, name: type(l_new)}", # currently unused
]
q_delete_old = ["match (n)-[l_old {id: {id}}]->(m)",
"where type(l_old)<>'%s' delete l_old" % new_label,
]
q_param_set = {'id': id_attr}
self.add_statement(q_create_new, q_param_set)
self.add_statement(q_delete_old, q_param_set)
def __init__(self, rzdoc):
"""
delete a rhizi doc
"""
super(DBO_rzdoc__delete, self).__init__()
rzdoc_label_q = quote__backtick(rzdoc__ns_label(rzdoc))
rzdoc_id_q = quote__singlequote(rzdoc.id)
# delete doc nodes & links
q_arr = ['match (n:%s)' % (rzdoc_label_q),
'optional match (n:%s)-[r]-()' % (rzdoc_label_q),
'delete r,n']
db_q = DB_Query(q_arr)
self.add_db_query(db_q)
# delete doc meta node
q_arr = ['match (n:%s {id: %s})' % (neo4j_schema.META_LABEL__RZDOC_TYPE,
rzdoc_id_q),
'optional match (n)-[r]-()',
'delete r,n']
db_q = DB_Query(q_arr)
self.add_db_query(db_q)
def add_link_rename_statements(self, id_attr, new_label):
# TODO - where do we sanitize the label name? any better way of doing this?
# XXX - the return here is a bit verbose? maybe better built on python side?
# NONGOALS: doing this on the client.
# Should assert the following returns 1
# match n-[l:new_label]->m return count(l)
# Not doing so to avoid roundtrip - the following doesn't require knowing
# the replaced label.
q_create_new = [
"match (n)-[l_old {id: {id}}]->(m)",
"create (n)-[l_new:%s]->(m) set l_new=l_old" %
db_util.quote__backtick(new_label),
"return l_new.id, {id: l_new.id, name: type(l_new)}", # currently unused
]
q_delete_old = [
"match (n)-[l_old {id: {id}}]->(m)",
"where type(l_old)<>'%s' delete l_old" % new_label,
]
q_param_set = {'id': id_attr}
self.add_statement(q_create_new, q_param_set)
self.add_statement(q_delete_old, q_param_set)