Fokko commented on code in PR #6127:
URL: https://github.com/apache/iceberg/pull/6127#discussion_r1015073328
##########
python/pyiceberg/expressions/visitors.py:
##########
@@ -417,6 +422,75 @@ def visit_bound_predicate(self, predicate) ->
BooleanExpression:
return predicate
+def expression_evaluator(schema: Schema, unbound: BooleanExpression,
case_sensitive=True) -> Callable[[StructProtocol], bool]:
Review Comment:
```suggestion
def expression_evaluator(schema: Schema, unbound: BooleanExpression,
case_sensitive: bool = True) -> Callable[[StructProtocol], bool]:
```
##########
python/pyiceberg/expressions/visitors.py:
##########
@@ -417,6 +422,75 @@ def visit_bound_predicate(self, predicate) ->
BooleanExpression:
return predicate
+def expression_evaluator(schema: Schema, unbound: BooleanExpression,
case_sensitive=True) -> Callable[[StructProtocol], bool]:
+ return _ExpressionEvaluator(schema, unbound, case_sensitive).eval
+
+
+class _ExpressionEvaluator(BoundBooleanExpressionVisitor[bool]):
+ bound: BooleanExpression
+ struct: StructProtocol
+
+ def __init__(self, schema: Schema, unbound: BooleanExpression,
case_sensitive=True):
Review Comment:
```suggestion
def __init__(self, schema: Schema, unbound: BooleanExpression,
case_sensitive: bool = True):
```
##########
python/pyiceberg/expressions/visitors.py:
##########
@@ -417,6 +422,75 @@ def visit_bound_predicate(self, predicate) ->
BooleanExpression:
return predicate
+def expression_evaluator(schema: Schema, unbound: BooleanExpression,
case_sensitive=True) -> Callable[[StructProtocol], bool]:
+ return _ExpressionEvaluator(schema, unbound, case_sensitive).eval
+
+
+class _ExpressionEvaluator(BoundBooleanExpressionVisitor[bool]):
+ bound: BooleanExpression
+ struct: StructProtocol
+
+ def __init__(self, schema: Schema, unbound: BooleanExpression,
case_sensitive=True):
+ self.bound = bind(schema, unbound, case_sensitive)
+
+ def eval(self, struct: StructProtocol):
Review Comment:
```suggestion
def eval(self, struct: StructProtocol) -> bool:
```
##########
python/pyiceberg/expressions/__init__.py:
##########
@@ -281,6 +289,30 @@ def __invert__(self) -> BoundIsNull:
return BoundIsNull(self.term)
+def coerce_unary_arguments(data_class: Union[type, None]) -> Union[type,
Callable[[type], type]]:
Review Comment:
I'm not sold on this, mostly because it adds another layer of complexity.
These things should normally just happen in the init. I've created a PR
https://github.com/apache/iceberg/pull/6127 That does exactly this, well tested
👍🏻
##########
python/pyiceberg/expressions/__init__.py:
##########
@@ -351,17 +386,56 @@ def bind(self, schema: Schema, case_sensitive: bool =
True) -> BooleanExpression
@dataclass(frozen=True)
-class BoundSetPredicate(BoundPredicate[T]):
- literals: set[Literal[T]]
+class BoundSetPredicate(BoundPredicate[C]):
+ literals: set[Literal[C]]
+
+ @property
Review Comment:
```suggestion
@cached_property
```
This way we don't have to build the caching mechanism ourselves.
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