1 files changed, 135 insertions, 0 deletions
diff --git a/src/arrow/c_glib/arrow-glib/datum.h b/src/arrow/c_glib/arrow-glib/datum.h
new file mode 100644
index 000000000..bc7dda369
--- /dev/null
+++ b/src/arrow/c_glib/arrow-glib/datum.h
@@ -0,0 +1,135 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#pragma once
+
+#include <arrow-glib/array.h>
+#include <arrow-glib/chunked-array.h>
+#include <arrow-glib/record-batch.h>
+#include <arrow-glib/scalar.h>
+#include <arrow-glib/table.h>
+
+G_BEGIN_DECLS
+
+#define GARROW_TYPE_DATUM (garrow_datum_get_type())
+G_DECLARE_DERIVABLE_TYPE(GArrowDatum,
+                         garrow_datum,
+                         GARROW,
+                         DATUM,
+                         GObject)
+struct _GArrowDatumClass
+{
+  GObjectClass parent_class;
+};
+
+GARROW_AVAILABLE_IN_1_0
+gboolean garrow_datum_is_array(GArrowDatum *datum);
+GARROW_AVAILABLE_IN_1_0
+gboolean garrow_datum_is_array_like(GArrowDatum *datum);
+GARROW_AVAILABLE_IN_5_0
+gboolean garrow_datum_is_scalar(GArrowDatum *datum);
+GARROW_AVAILABLE_IN_5_0
+gboolean garrow_datum_is_value(GArrowDatum *datum);
+/*
+GARROW_AVAILABLE_IN_5_0
+gboolean garrow_datum_is_collection(GArrowDatum *datum);
+*/
+GARROW_AVAILABLE_IN_1_0
+gboolean garrow_datum_equal(GArrowDatum *datum,
+                            GArrowDatum *other_datum);
+GARROW_AVAILABLE_IN_1_0
+gchar *garrow_datum_to_string(GArrowDatum *datum);
+
+/* GARROW_TYPE_NONE_DATUM */
+
+#define GARROW_TYPE_SCALAR_DATUM (garrow_scalar_datum_get_type())
+G_DECLARE_DERIVABLE_TYPE(GArrowScalarDatum,
+                         garrow_scalar_datum,
+                         GARROW,
+                         SCALAR_DATUM,
+                         GArrowDatum)
+struct _GArrowScalarDatumClass
+{
+  GArrowDatumClass parent_class;
+};
+
+GARROW_AVAILABLE_IN_5_0
+GArrowScalarDatum *garrow_scalar_datum_new(GArrowScalar *value);
+
+#define GARROW_TYPE_ARRAY_DATUM (garrow_array_datum_get_type())
+G_DECLARE_DERIVABLE_TYPE(GArrowArrayDatum,
+                         garrow_array_datum,
+                         GARROW,
+                         ARRAY_DATUM,
+                         GArrowDatum)
+struct _GArrowArrayDatumClass
+{
+  GArrowDatumClass parent_class;
+};
+
+GARROW_AVAILABLE_IN_1_0
+GArrowArrayDatum *garrow_array_datum_new(GArrowArray *value);
+
+#define GARROW_TYPE_CHUNKED_ARRAY_DATUM (garrow_chunked_array_datum_get_type())
+G_DECLARE_DERIVABLE_TYPE(GArrowChunkedArrayDatum,
+                         garrow_chunked_array_datum,
+                         GARROW,
+                         CHUNKED_ARRAY_DATUM,
+                         GArrowDatum)
+struct _GArrowChunkedArrayDatumClass
+{
+  GArrowDatumClass parent_class;
+};
+
+GARROW_AVAILABLE_IN_1_0
+GArrowChunkedArrayDatum *
+garrow_chunked_array_datum_new(GArrowChunkedArray *value);
+
+#define GARROW_TYPE_RECORD_BATCH_DATUM (garrow_record_batch_datum_get_type())
+G_DECLARE_DERIVABLE_TYPE(GArrowRecordBatchDatum,
+                         garrow_record_batch_datum,
+                         GARROW,
+                         RECORD_BATCH_DATUM,
+                         GArrowDatum)
+struct _GArrowRecordBatchDatumClass
+{
+  GArrowDatumClass parent_class;
+};
+
+GARROW_AVAILABLE_IN_1_0
+GArrowRecordBatchDatum *
+garrow_record_batch_datum_new(GArrowRecordBatch *value);
+
+#define GARROW_TYPE_TABLE_DATUM (garrow_table_datum_get_type())
+G_DECLARE_DERIVABLE_TYPE(GArrowTableDatum,
+                         garrow_table_datum,
+                         GARROW,
+                         TABLE_DATUM,
+                         GArrowDatum)
+struct _GArrowTableDatumClass
+{
+  GArrowDatumClass parent_class;
+};
+
+GARROW_AVAILABLE_IN_1_0
+GArrowTableDatum *garrow_table_datum_new(GArrowTable *value);
+
+/* GARROW_TYPE_COLLECTION_DATUM */
+
+G_END_DECLS