From 5ed59086caae266ffdca0e838d9ceb665a63e7a7 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Fri, 12 Dec 2025 22:54:22 +0000
Subject: [PATCH 1/2] Add to_ibis() method to DataFrame and Series

This commit adds a `to_ibis()` method to both `DataFrame` and `Series` classes. This method allows users to access the underlying Ibis expression (`_data`) for more advanced operations or interoperability with Ibis directly.

Tests were added in `tests/test_to_ibis.py` to verify the functionality.
---
 leanframe/core/frame.py  |  4 ++++
 leanframe/core/series.py |  4 ++++
 tests/test_to_ibis.py    | 34 ++++++++++++++++++++++++++++++++++
 3 files changed, 42 insertions(+)
 create mode 100644 tests/test_to_ibis.py

diff --git a/leanframe/core/frame.py b/leanframe/core/frame.py
index 10caf76..94ef66f 100644
--- a/leanframe/core/frame.py
+++ b/leanframe/core/frame.py
@@ -91,6 +91,10 @@ def to_pandas(self) -> pd.DataFrame:
             types_mapper=lambda type_: pd.ArrowDtype(type_)
         )
 
+    def to_ibis(self) -> ibis_types.Table:
+        """Return the underlying Ibis expression."""
+        return self._data
+
 
 """
 Dynamic Nested Data Handler for leanframe
diff --git a/leanframe/core/series.py b/leanframe/core/series.py
index e7cd0e8..c352caf 100644
--- a/leanframe/core/series.py
+++ b/leanframe/core/series.py
@@ -234,6 +234,10 @@ def to_pandas(self) -> pd.Series:
             types_mapper=lambda type_: pd.ArrowDtype(type_)
         )
 
+    def to_ibis(self) -> ibis_types.Column:
+        """Return the underlying Ibis expression."""
+        return self._data
+
     def to_numpy(self) -> np.ndarray:
         """Return a numpy representation of the Series."""
         return self.values
diff --git a/tests/test_to_ibis.py b/tests/test_to_ibis.py
new file mode 100644
index 0000000..5f3b0b7
--- /dev/null
+++ b/tests/test_to_ibis.py
@@ -0,0 +1,34 @@
+
+import pytest
+import pandas as pd
+import leanframe as lf
+import ibis
+import ibis.expr.types as ibis_types
+from leanframe.core.frame import DataFrame
+from leanframe.core.series import Series
+
+def test_dataframe_to_ibis():
+    # Setup
+    con = ibis.sqlite.connect()
+    t = con.create_table('test_df_ibis', schema=ibis.schema({'a': 'int64', 'b': 'string'}))
+    df = DataFrame(t)
+
+    # Execute
+    expr = df.to_ibis()
+
+    # Assert
+    assert isinstance(expr, ibis_types.Table)
+    assert expr.equals(t)
+
+def test_series_to_ibis():
+    # Setup
+    con = ibis.sqlite.connect()
+    t = con.create_table('test_series_ibis', schema=ibis.schema({'a': 'int64'}))
+    s = Series(t['a'])
+
+    # Execute
+    expr = s.to_ibis()
+
+    # Assert
+    assert isinstance(expr, ibis_types.Column)
+    assert expr.equals(t['a'])

From b2dcd452c92eec4ba6a1d43a8403205c2de41bd8 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Fri, 12 Dec 2025 23:04:50 +0000
Subject: [PATCH 2/2] Add to_ibis() method to DataFrame and Series

This commit adds a `to_ibis()` method to both `DataFrame` and `Series` classes. This method allows users to access the underlying Ibis expression (`_data`) for more advanced operations or interoperability with Ibis directly.

Tests were added in `tests/test_to_ibis.py` to verify the functionality.
---
 tests/test_to_ibis.py | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/tests/test_to_ibis.py b/tests/test_to_ibis.py
index 5f3b0b7..8e9bfe9 100644
--- a/tests/test_to_ibis.py
+++ b/tests/test_to_ibis.py
@@ -1,7 +1,4 @@
 
-import pytest
-import pandas as pd
-import leanframe as lf
 import ibis
 import ibis.expr.types as ibis_types
 from leanframe.core.frame import DataFrame