Github user rdblue commented on a diff in the pull request:
https://github.com/apache/spark/pull/21306#discussion_r237971288
--- Diff:
sql/catalyst/src/main/java/org/apache/spark/sql/catalog/v2/Table.java ---
@@ -0,0 +1,46 @@
+/*
+ * 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.
+ */
+
+package org.apache.spark.sql.catalog.v2;
+
+import org.apache.spark.sql.types.StructType;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Represents table metadata from a {@link TableCatalog} or other table
sources.
+ */
+public interface Table {
+ /**
+ * Return the table properties.
+ * @return this table's map of string properties
+ */
+ Map<String, String> properties();
+
+ /**
+ * Return the table schema.
+ * @return this table's schema as a struct type
+ */
+ StructType schema();
+
+ /**
+ * Return the table partitioning transforms.
+ * @return this table's partitioning transforms
+ */
+ List<PartitionTransform> partitioning();
--- End diff --
Sure
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