[GitHub] [flink] wuchong commented on a change in pull request #8867: [FLINK-12956][jdbc] Introduce upsert table sink for JDBC

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wuchong commented on a change in pull request #8867: [FLINK-12956][jdbc] Introduce upsert table sink for JDBC
URL: https://github.com/apache/flink/pull/8867#discussion_r298554776
 
 

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 File path: flink-connectors/flink-jdbc/src/main/java/org/apache/flink/api/java/io/jdbc/JDBCUpsertTableSink.java
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+/*
+ * 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.api.java.io.jdbc;
+
+import org.apache.flink.api.common.typeinfo.TypeInformation;
+import org.apache.flink.api.common.typeinfo.Types;
+import org.apache.flink.api.java.DataSet;
+import org.apache.flink.api.java.io.jdbc.upsert.QueryExecutor;
+import org.apache.flink.api.java.tuple.Tuple2;
+import org.apache.flink.api.java.typeutils.RowTypeInfo;
+import org.apache.flink.api.java.typeutils.TupleTypeInfo;
+import org.apache.flink.streaming.api.datastream.DataStream;
+import org.apache.flink.table.sinks.BatchTableSink;
+import org.apache.flink.table.sinks.TableSink;
+import org.apache.flink.table.sinks.UpsertStreamTableSink;
+import org.apache.flink.table.utils.TableConnectorUtils;
+import org.apache.flink.types.Row;
+
+import java.util.Arrays;
+import java.util.List;
+
+import static org.apache.flink.api.java.io.jdbc.AbstractJDBCOutputFormat.DEFAULT_BATCH_INTERVAL;
+import static org.apache.flink.api.java.io.jdbc.JDBCUpsertOutputFormat.DEFAULT_MAX_RETRY_TIMES;
+
+/**
+ * An upsert {@link UpsertStreamTableSink} for JDBC.
+ */
+public class JDBCUpsertTableSink implements UpsertStreamTableSink<Row>, BatchTableSink<Tuple2<Boolean, Row>> {
+
+	private final String tableName;
+	private final String username;
+	private final String password;
+	private final String drivername;
+	private final String dbURL;
+	private final QueryExecutor appendExec;
+	private final QueryExecutor replaceExec;
+	private final QueryExecutor deleteExec;
+	private final int batchInterval;
+	private final int maxRetryTime;
+
+	private String[] keyFields;
+	private String[] fieldNames;
+	private TypeInformation[] fieldTypes;
+
+	private JDBCUpsertTableSink(
+			String tableName, String username, String password, String drivername, String dbURL,
+			QueryExecutor appendExec, QueryExecutor replaceExec, QueryExecutor deleteExec,
+			int batchInterval, int maxRetryTime) {
 
 Review comment:
   We should also pass in sink's field types (they may come from DDL).

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