126 lines
3.3 KiB
Python
126 lines
3.3 KiB
Python
from datetime import datetime, time, timedelta
|
|
from typing import Any
|
|
|
|
from pypika.dialects import SQLLiteValueWrapper
|
|
from pypika.queries import QueryBuilder
|
|
from pypika.terms import Criterion, Function, ValueWrapper
|
|
from pypika.utils import format_alias_sql
|
|
|
|
import frappe
|
|
from frappe.utils.data import format_time, format_timedelta
|
|
|
|
|
|
class NamedParameterWrapper:
|
|
"""Utility class to hold parameter values and keys"""
|
|
|
|
__slots__ = ("parameters",)
|
|
|
|
def __init__(self) -> None:
|
|
self.parameters = {}
|
|
|
|
def get_sql(self, param_value: Any, **kwargs) -> str:
|
|
"""Return SQL for a parameter, while adding the real value in a dict.
|
|
|
|
Args:
|
|
param_value (Any): Value of the parameter
|
|
|
|
Return:
|
|
str: parameter used in the SQL query
|
|
"""
|
|
param_key = f"%(param{len(self.parameters) + 1})s"
|
|
self.parameters[param_key[2:-2]] = param_value
|
|
return param_key
|
|
|
|
def get_parameters(self) -> dict[str, Any]:
|
|
"""Get dict with parameters and values."""
|
|
return self.parameters
|
|
|
|
|
|
class ParameterizedValueWrapper(ValueWrapper):
|
|
"""
|
|
Class to monkey patch ValueWrapper
|
|
|
|
Adds functionality to parameterize queries when a `param wrapper` is passed in get_sql()
|
|
"""
|
|
|
|
def get_sql(
|
|
self,
|
|
quote_char: str | None = None,
|
|
secondary_quote_char: str = "'",
|
|
param_wrapper: NamedParameterWrapper | None = None,
|
|
**kwargs: Any,
|
|
) -> str:
|
|
if param_wrapper and isinstance(self.value, str):
|
|
# add quotes if it's a string value
|
|
value_sql = self.get_value_sql(quote_char=quote_char, **kwargs)
|
|
sql = param_wrapper.get_sql(param_value=value_sql, **kwargs)
|
|
else:
|
|
# * BUG: pypika doesen't parse timedeltas and datetime.time
|
|
if isinstance(self.value, timedelta):
|
|
self.value = format_timedelta(self.value)
|
|
elif isinstance(self.value, time):
|
|
self.value = format_time(self.value)
|
|
elif isinstance(self.value, datetime):
|
|
self.value = frappe.db.format_datetime(self.value)
|
|
|
|
sql = self.get_value_sql(
|
|
quote_char=quote_char,
|
|
secondary_quote_char=secondary_quote_char,
|
|
param_wrapper=param_wrapper,
|
|
**kwargs,
|
|
)
|
|
return format_alias_sql(sql, self.alias, quote_char=quote_char, **kwargs)
|
|
|
|
|
|
class SQLiteParameterizedValueWrapper(ParameterizedValueWrapper, SQLLiteValueWrapper):
|
|
pass
|
|
|
|
|
|
class ParameterizedFunction(Function):
|
|
"""
|
|
Class to monkey patch pypika.terms.Functions
|
|
|
|
Only to pass `param_wrapper` in `get_function_sql`.
|
|
"""
|
|
|
|
def get_sql(self, **kwargs: Any) -> str:
|
|
with_alias = kwargs.pop("with_alias", False)
|
|
with_namespace = kwargs.pop("with_namespace", False)
|
|
quote_char = kwargs.pop("quote_char", None)
|
|
dialect = kwargs.pop("dialect", None)
|
|
param_wrapper = kwargs.pop("param_wrapper", None)
|
|
|
|
function_sql = self.get_function_sql(
|
|
with_namespace=with_namespace,
|
|
quote_char=quote_char,
|
|
param_wrapper=param_wrapper,
|
|
dialect=dialect,
|
|
)
|
|
|
|
if self.schema is not None:
|
|
function_sql = "{schema}.{function}".format(
|
|
schema=self.schema.get_sql(quote_char=quote_char, dialect=dialect, **kwargs),
|
|
function=function_sql,
|
|
)
|
|
|
|
if with_alias:
|
|
return format_alias_sql(function_sql, self.alias, quote_char=quote_char, **kwargs)
|
|
|
|
return function_sql
|
|
|
|
|
|
class SubQuery(Criterion):
|
|
def __init__(
|
|
self,
|
|
subq: QueryBuilder,
|
|
alias: str | None = None,
|
|
) -> None:
|
|
super().__init__(alias)
|
|
self.subq = subq
|
|
|
|
def get_sql(self, **kwg: Any) -> str:
|
|
kwg["subquery"] = True
|
|
return self.subq.get_sql(**kwg)
|
|
|
|
|
|
subqry = SubQuery
|