- def add_node_network(self, nodenetwork, commit = True):
- """
- Add node network to this node.
- """
-
- assert 'node_id' in self
- assert isinstance(nodenetwork, NodeNetwork)
- assert 'nodenetwork_id' in nodenetwork
-
- nodenetwork_id = nodenetwork['nodenetwork_id']
- nodenetwork['node_id'] = self['node_id']
-
- self.api.db.do("INSERT INTO node_nodenetwork (node_id, nodenetwork_id, is_primary)" \
- " VALUES(%(node_id)d, %(nodenetwork_id)d, False)",
- nodenetwork)
-
- if commit:
- self.api.db.commit()
-
- if 'nodenetwork_ids' in self and nodenetwork_id not in self['nodenetwork_ids']:
- self['nodenetwork_ids'].append(nodenetwork_id)
-
- def set_primary_node_network(self, nodenetwork, commit = True):
- """
- Remove node network from this node.
- """
-
- assert 'node_id' in self
- assert isinstance(nodenetwork, NodeNetwork)
- assert 'nodenetwork_id' in nodenetwork
-
- node_id = self['node_id']
- nodenetwork_id = nodenetwork['nodenetwork_id']
-
- self.api.db.do("UPDATE node_nodenetwork SET is_primary = False" \
- " WHERE node_id = %(node_id)d",
- locals())
-
- self.api.db.do("UPDATE node_nodenetwork SET is_primary = True" \
- " WHERE node_id = %(node_id)d" \
- " AND nodenetwork_id = %(nodenetwork_id)d",
- locals())
-
- if commit:
- self.api.db.commit()
-
- nodenetwork['is_primary'] = True
-
- def sync(self, commit = True):
- """
- Flush changes back to the database.
- """
-
- self.validate()
-
- # Fetch a new node_id if necessary
- if 'node_id' not in self:
- rows = self.api.db.selectall("SELECT NEXTVAL('nodes_node_id_seq') AS node_id")
- if not rows:
- raise PLCDBError, "Unable to fetch new node_id"
- self['node_id'] = rows[0]['node_id']
- insert = True
- else:
- insert = False
-
- # Filter out fields that cannot be set or updated directly
- nodes_fields = self.api.db.fields('nodes')
- fields = dict(filter(lambda (key, value): key in nodes_fields,
- self.items()))
-
- # Parameterize for safety
- keys = fields.keys()
- values = [self.api.db.param(key, value) for (key, value) in fields.items()]
-
- if insert:
- # Insert new row in nodes table
- sql = "INSERT INTO nodes (%s) VALUES (%s)" % \
- (", ".join(keys), ", ".join(values))
- else:
- # Update existing row in nodes table
- columns = ["%s = %s" % (key, value) for (key, value) in zip(keys, values)]
- sql = "UPDATE nodes SET " + \
- ", ".join(columns) + \
- " WHERE node_id = %(node_id)d"
-
- self.api.db.do(sql, fields)
-
- if commit:
- self.api.db.commit()