(arrow) branch main updated: GH-49417: [GLib] Add `garrow_map_data_type_is_keys_sorted()` (#49418)

[kou]

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The following commit(s) were added to refs/heads/main by this push:
     new aae49e8ba2 GH-49417: [GLib] Add 
`garrow_map_data_type_is_keys_sorted()` (#49418)
aae49e8ba2 is described below

commit aae49e8ba20a021d096288fef261c12d98d0a114
Author: Sutou Kouhei <k...@clear-code.com>
AuthorDate: Mon Mar 2 10:52:46 2026 +0900

    GH-49417: [GLib] Add `garrow_map_data_type_is_keys_sorted()` (#49418)
    
    ### Rationale for this change
    
    It's the bindings of `arrow::MapType::keys_sorted()`.
    
    ### What changes are included in this PR?
    
    Add `garrow_map_data_type_is_keys_sorted()`.
    
    ### Are these changes tested?
    
    Yes.
    
    ### Are there any user-facing changes?
    
    Yes.
    * GitHub Issue: #49417
    
    Authored-by: Sutou Kouhei <k...@clear-code.com>
    Signed-off-by: Sutou Kouhei <k...@clear-code.com>
---
 c_glib/arrow-glib/composite-data-type.cpp | 17 +++++++++++++++++
 c_glib/arrow-glib/composite-data-type.h   |  3 +++
 c_glib/test/test-map-data-type.rb         |  6 ++++++
 3 files changed, 26 insertions(+)

diff --git a/c_glib/arrow-glib/composite-data-type.cpp 
b/c_glib/arrow-glib/composite-data-type.cpp
index 3c216867da..abd1951581 100644
--- a/c_glib/arrow-glib/composite-data-type.cpp
+++ b/c_glib/arrow-glib/composite-data-type.cpp
@@ -422,6 +422,23 @@ garrow_map_data_type_get_item_type(GArrowMapDataType 
*map_data_type)
   return garrow_data_type_new_raw(&arrow_item_type);
 }
 
+/**
+ * garrow_map_data_type_is_keys_sorted:
+ * @map_data_type: A #GArrowMapDataType.
+ *
+ * Returns: Whether the keys in the map is sorted or not.
+ *
+ * Since: 24.0.0
+ */
+gboolean
+garrow_map_data_type_is_keys_sorted(GArrowMapDataType *map_data_type)
+{
+  auto data_type = GARROW_DATA_TYPE(map_data_type);
+  auto arrow_data_type = garrow_data_type_get_raw(data_type);
+  auto arrow_map_data_type = 
std::static_pointer_cast<arrow::MapType>(arrow_data_type);
+  return arrow_map_data_type->keys_sorted();
+}
+
 G_DEFINE_ABSTRACT_TYPE(GArrowUnionDataType, garrow_union_data_type, 
GARROW_TYPE_DATA_TYPE)
 
 static void
diff --git a/c_glib/arrow-glib/composite-data-type.h 
b/c_glib/arrow-glib/composite-data-type.h
index 207647bd46..e929fc91f6 100644
--- a/c_glib/arrow-glib/composite-data-type.h
+++ b/c_glib/arrow-glib/composite-data-type.h
@@ -142,6 +142,9 @@ garrow_map_data_type_get_key_type(GArrowMapDataType 
*map_data_type);
 GARROW_AVAILABLE_IN_0_17
 GArrowDataType *
 garrow_map_data_type_get_item_type(GArrowMapDataType *map_data_type);
+GARROW_AVAILABLE_IN_24_0
+gboolean
+garrow_map_data_type_is_keys_sorted(GArrowMapDataType *map_data_type);
 
 #define GARROW_TYPE_UNION_DATA_TYPE (garrow_union_data_type_get_type())
 GARROW_AVAILABLE_IN_ALL
diff --git a/c_glib/test/test-map-data-type.rb 
b/c_glib/test/test-map-data-type.rb
index c537c43d8b..9a3dd5dfb0 100644
--- a/c_glib/test/test-map-data-type.rb
+++ b/c_glib/test/test-map-data-type.rb
@@ -41,4 +41,10 @@ class TestMapDataType < Test::Unit::TestCase
   def test_item
     assert_equal(@item_type, @data_type.item_type)
   end
+
+  def test_keys_sorted?
+    assert do
+      not @data_type.keys_sorted?
+    end
+  end
 end