[flink] 02/03: [FLINK-12808][table-api] Introduce OverwritableTableSink for supporting insert overwrite

[ja...@apache.org]

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commit fb111ef22b8f87dd25e61160678fc8857dffcfe0
Author: 云邪 <wu...@alibaba-inc.com>
AuthorDate: Wed Jun 12 11:01:20 2019 +0800

    [FLINK-12808][table-api] Introduce OverwritableTableSink for supporting insert overwrite
---
 .../flink/table/sinks/OverwritableTableSink.java   | 36 ++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/flink-table/flink-table-common/src/main/java/org/apache/flink/table/sinks/OverwritableTableSink.java b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/sinks/OverwritableTableSink.java
new file mode 100644
index 0000000..6b46ef2
--- /dev/null
+++ b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/sinks/OverwritableTableSink.java
@@ -0,0 +1,36 @@
+/*
+ * 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.flink.table.sinks;
+
+import org.apache.flink.annotation.Experimental;
+
+/**
+ * A {@link TableSink} that supports INSERT OVERWRITE should implement this trait.
+ * INSERT OVERWRITE will overwrite any existing data in the table or partition.
+ *
+ * @see PartitionableTableSink for the definition of partition.
+ */
+@Experimental
+public interface OverwritableTableSink {
+
+	/**
+	 * Configures whether the insert should overwrite existing data or not.
+	 */
+	void setOverwrite(boolean overwrite);
+}