def __init__(self, internal_name, external_name, mappings):
VaporTable.__init__(self, external_name)
self.internal_name = internal_name.lower()
self.external_name = external_name.lower()
for key in mappings.keys():
val = mappings[key]
self.vqlsql_map[val] = key
self.sqlvql_map[key] = val
def _preflight_query(self, vql, parsed):
"""
_preflight_query( 'SELECT * FROM FOO' )
does "EXPLAIN" after using super version
"""
# TODO: the explain test
assert self.external_name == parsed.table_name, "External Name Mismatch... how'd you get routed here? %s %s" % (self.external_name, parsed.table_name)
VaporTable._preflight_query(self, vql, parsed)
return True
def __init__(self, internal_tables, external_name, join_columns, mappings):
"""
internal_tables - the list of actual DB tables to join
external_name - the alias for this view
join_columns - list of pairs of qualified columns to use in joining
"""
VaporTable.__init__(self, external_name)
self.internal_tables = [t.lower() for t in internal_tables]
self.external_name = external_name.lower()
self.join_columns = join_columns
for k in mappings.keys():
v = mappings[k]
assert k.find('.')>0, "SVV internal mappings must be qualified, %s %s" % (k,v)
assert k.split('.')[0] in internal_tables, "SVV mapping doesn't match a table %s %s" % ( internal_tables, mappings )
self.vqlsql_map[v] = k
self.sqlvql_map[k] = v
for pair in join_columns:
assert len(pair) == 2, "That's not a pair of columns! %s" % join_columns
assert pair[0].find('.')>0 and pair[1].find('.')>0, "mapping columns must be qualified, I'm not a genius %s" % pair
def _preflight_query(self, vql, parsed):
assert self.external_name == parsed.table_name, "SVV ExName wrong %s %s" % (self.external_name, parsed.table_name)
VaporTable._preflight_query( self, vql, parsed )
def _preflight_query(self, vql, parsed):
#todo
VaporTable._preflight_query( self, vql, parsed )
pass
