return ("coalesce(" + sign.join("(" + (t).to_python() + ")"
for t in self.terms) + ", " +
(self.default).to_python() + ")")
def with_var(var, expression, eval):
"""
:param var: NAME GIVEN TO expression
:param expression: THE EXPRESSION TO COMPUTE FIRST
:param eval: THE EXPRESSION TO COMPUTE SECOND, WITH var ASSIGNED
:return: PYTHON EXPRESSION
"""
return "[(" + eval + ") for " + var + " in [" + expression + "]][0]"
Python = Language("Python")
_python_operators = {
"add": (" + ", "0"), # (operator, zero-array default value) PAIR
"sum": (" + ", "0"),
"mul": (" * ", "1"),
"sub": (" - ", None),
"div": (" / ", None),
"exp": (" ** ", None),
"mod": (" % ", None),
"gt": (" > ", None),
"gte": (" >= ", None),
"lte": (" <= ", None),
"lt": (" < ", None),
}
for t in self.terms) + ", " +
BQLang[self.default].to_bq(schema) + ")")
def basic_multiop_to_bq(self,
schema,
not_null=False,
boolean=False,
many=False):
op, identity = _sql_operators[self.op.split("basic.")[1]]
sql = op.join(
sql_iso(BQLang[t].to_bq(schema)[0].sql.n) for t in self.terms)
return wrap([{"name": ".", "sql": {"n": sql}}])
BQLang = Language("BQLang")
_sql_operators = {
# (operator, zero-array default value) PAIR
"add": (SQL_PLUS, SQL_ZERO),
"sum": (SQL_PLUS, SQL_ZERO),
"mul": (SQL_STAR, SQL_ONE),
"sub": (SQL(" - "), None),
"div": (SQL(" / "), None),
"exp": (SQL(" ** "), None),
"mod": (SQL(" % "), None),
"gt": (SQL(" > "), None),
"gte": (SQL(" >= "), None),
"lte": (SQL(" <= "), None),
"lt": (SQL_LT, None),
}
all_paths = set(c.nested_path[0] for v in where_vars
for c in var_to_columns[v.var])
if len(all_paths) == 0:
output.setdefault(".", []).append(expr)
elif len(all_paths) == 1:
output.setdefault(first(all_paths), []).append(expr)
elif is_op(expr, AndOp_):
for w in expr.terms:
split_expression_by_path(w,
schema,
output,
var_to_columns,
lang=lang)
else:
Log.error("Can not handle complex expression clause")
return output
def get_type(var_name):
type_ = var_name.split(".$")[1:]
if not type_:
return "j"
return json_type_to_es_script_type.get(type_[0], "j")
json_type_to_es_script_type = {"string": "s", "boolean": "b", "number": "n"}
ES52 = Language("ES52")
schema=schema),
}).partial_eval().to_es_script(schema))
else:
calc = op.join("(" + NumberOp(t).to_es_script(schema).expr + ")"
for t in self.terms)
return (WhenOp(
OrOp([t.missing() for t in self.terms]), **{
"then": self.default,
"else": EsScript(type=NUMBER,
expr=calc,
frum=self,
schema=schema),
}).partial_eval().to_es_script(schema))
Painless = Language("Painless")
_count_template = (
"long count=0; for(v in {{expr}}) if (v!=null) count+=1; return count;")
_painless_operators = {
"add": (" + ", "0"), # (operator, zero-array default value) PAIR
"sum": (" + ", "0"),
"mul": (" * ", "1"),
"basic.add": (" + ", "0"),
"basic.mul": (" * ", "1"),
"sub": ("-", None),
"div": ("/", None),
"exp": ("**", None),
"mod": ("%", None),
"gt": (">", None),
return ConcatSQL(SQL("WITH x AS (SELECT ("), expression, SQL(") AS "), var,
SQL(") SELECT "), eval, SQL(" FROM x"))
def basic_multiop_to_sql(self,
schema,
not_null=False,
boolean=False,
many=False):
op, identity = _sql_operators[self.op.split("basic.")[1]]
sql = op.join(
sql_iso(SQLang[t].to_sql(schema)[0].sql.n) for t in self.terms)
return wrap([{"name": ".", "sql": {"n": sql}}])
SQLang = Language("SQLang")
_sql_operators = {
# (operator, zero-array default value) PAIR
"add": (SQL_PLUS, SQL_ZERO),
"sum": (SQL_PLUS, SQL_ZERO),
"mul": (SQL_STAR, SQL_ONE),
"sub": (SQL(" - "), None),
"div": (SQL(" / "), None),
"exp": (SQL(" ** "), None),
"mod": (SQL(" % "), None),
"gt": (SQL(" > "), None),
"gte": (SQL(" >= "), None),
"lte": (SQL(" <= "), None),
"lt": (SQL_LT, None),
}
return class_.define(expr)
# THIS LANGUAGE DOES NOT SUPPORT THIS OPERATOR, GOTO BASE LANGUAGE AND GET THE MACRO
class_ = language[op.get_id()]
output = class_.define(expr).partial_eval()
return _jx_expression(output, lang)
else:
if not items:
return NULL
raise Log.error("{{instruction|json}} is not known", instruction=expr)
except Exception as e:
Log.error("programmer error expr = {{value|quote}}", value=expr, cause=e)
language = Language(None)
_json_encoder = utf8_json_encoder
def value2json(value):
try:
scrubbed = scrub(value, scrub_number=float)
return text(_json_encoder(scrubbed))
except Exception as e:
e = Except.wrap(e)
Log.warning("problem serializing {{type}}", type=text(repr(value)), cause=e)
raise e