[arrow] branch master updated: ARROW-10752: [GLib] Add garrow_schema_has_metadata()

[ko...@apache.org]

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The following commit(s) were added to refs/heads/master by this push:
     new a8bebed  ARROW-10752: [GLib] Add garrow_schema_has_metadata()
a8bebed is described below

commit a8bebed13df484aa9348f3ebaefebc5abd1a7a3a
Author: Sutou Kouhei <ko...@clear-code.com>
AuthorDate: Sun Nov 29 06:57:16 2020 +0900

    ARROW-10752: [GLib] Add garrow_schema_has_metadata()
    
    Closes #8787 from kou/glib-schema-has-metadata
    
    Authored-by: Sutou Kouhei <ko...@clear-code.com>
    Signed-off-by: Sutou Kouhei <ko...@clear-code.com>
---
 c_glib/arrow-glib/schema.cpp | 15 +++++++++++++++
 c_glib/arrow-glib/schema.h   |  3 +++
 c_glib/test/test-schema.rb   | 15 +++++++++++++++
 3 files changed, 33 insertions(+)

diff --git a/c_glib/arrow-glib/schema.cpp b/c_glib/arrow-glib/schema.cpp
index 62a36de..bf66f56 100644
--- a/c_glib/arrow-glib/schema.cpp
+++ b/c_glib/arrow-glib/schema.cpp
@@ -360,6 +360,21 @@ garrow_schema_replace_field(GArrowSchema *schema,
 }
 
 /**
+ * garrow_schema_has_metadata:
+ * @schema: A #GArrowSchema.
+ *
+ * Returns: %TRUE if the schema has metadata, %FALSE otherwise.
+ *
+ * Since: 3.0.0
+ */
+gboolean
+garrow_schema_has_metadata(GArrowSchema *schema)
+{
+  const auto arrow_schema = garrow_schema_get_raw(schema);
+  return arrow_schema->HasMetadata();
+}
+
+/**
  * garrow_schema_get_metadata:
  * @schema: A #GArrowSchema.
  *
diff --git a/c_glib/arrow-glib/schema.h b/c_glib/arrow-glib/schema.h
index f97f997..3a3252b 100644
--- a/c_glib/arrow-glib/schema.h
+++ b/c_glib/arrow-glib/schema.h
@@ -66,6 +66,9 @@ GArrowSchema    *garrow_schema_replace_field    (GArrowSchema *schema,
                                                  GArrowField *field,
                                                  GError **error);
 
+GARROW_AVAILABLE_IN_3_0
+gboolean
+garrow_schema_has_metadata(GArrowSchema *schema);
 GARROW_AVAILABLE_IN_0_17
 GHashTable *
 garrow_schema_get_metadata(GArrowSchema *schema);
diff --git a/c_glib/test/test-schema.rb b/c_glib/test/test-schema.rb
index 87a38ac..a82d3f9 100644
--- a/c_glib/test/test-schema.rb
+++ b/c_glib/test/test-schema.rb
@@ -164,6 +164,21 @@ new: bool
     SCHEMA
   end
 
+  def test_has_metadata
+    fields = [
+      Arrow::Field.new("enabled", Arrow::BooleanDataType.new),
+      Arrow::Field.new("required", Arrow::BooleanDataType.new),
+    ]
+    schema = Arrow::Schema.new(fields)
+    assert do
+      not schema.has_metadata?
+    end
+    schema_with_metadata = schema.with_metadata("key" => "value")
+    assert do
+      schema_with_metadata.has_metadata?
+    end
+  end
+
   sub_test_case("#metadata") do
     def setup
       require_gi_bindings(3, 4, 2)