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https://issues.apache.org/jira/browse/FLINK-9523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16613249#comment-16613249
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ASF GitHub Bot commented on FLINK-9523:
---------------------------------------
SokolovMS commented on a change in pull request #6672: [FLINK-9523] [table] Add
Kafka examples for Flink Table/SQL API
URL: https://github.com/apache/flink/pull/6672#discussion_r217320397
##########
File path:
flink-examples/flink-examples-table/src/main/java/org/apache/flink/table/examples/java/kafka/Kafka010JsonConsumer.java
##########
@@ -0,0 +1,88 @@
+/*
+ * 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.examples.java.kafka;
+
+import org.apache.flink.api.common.typeinfo.Types;
+import org.apache.flink.api.java.utils.ParameterTool;
+import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
+import org.apache.flink.streaming.connectors.kafka.Kafka010JsonTableSink;
+import org.apache.flink.streaming.connectors.kafka.Kafka010JsonTableSource;
+import org.apache.flink.table.api.StreamTableEnvironment;
+import org.apache.flink.table.api.Table;
+import org.apache.flink.table.api.TableSchema;
+
+/**
+ * An example that shows how to read from and write to Kafka table rows as
JSON-encoded records.
+ *
+ * <p>This example shows how to:
+ * - Use Kafka JSON TableSource
+ * - Use SQL api and a group window to compute a result
+ *
+ * <p>Example usage:
+ * Run Consumer with the following arguments:
+ * --input-topic consumer-input --output-topic consumer-output
--bootstrap.servers localhost:9092 --zookeeper.connect localhost:2181
--group.id myconsumer
+ */
+public class Kafka010JsonConsumer {
+ private static final String TABLE_NAME = "tableName";
+
+ static final String WORD_COL = "word";
+ static final String FREQUENCY_COL = "frequency";
+ static final String TIMESTAMP_COL = "currentTimestamp";
+
+ public static void main(String[] args) throws Exception {
+ final ParameterTool parameterTool =
ParameterTool.fromArgs(args);
+
+ if (parameterTool.getNumberOfParameters() < 5) {
+ System.out.println("Missing parameters!\n" +
+ "Usage: Kafka --input-topic <topic>
--output-topic <topic> " +
+ "--bootstrap.servers <kafka brokers> " +
+ "--zookeeper.connect <zk quorum> --group.id
<some id>");
+ return;
+ }
+
+ StreamExecutionEnvironment env =
StreamExecutionEnvironment.getExecutionEnvironment();
+ StreamTableEnvironment tEnv =
StreamTableEnvironment.getTableEnvironment(env);
+
+ Kafka010JsonTableSource sensorSource =
Kafka010JsonTableSource.builder()
Review comment:
Done for Kafka source
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> Add Kafka examples for Flink Table/SQL API
> -------------------------------------------
>
> Key: FLINK-9523
> URL: https://issues.apache.org/jira/browse/FLINK-9523
> Project: Flink
> Issue Type: Task
> Components: Examples
> Reporter: Shuyi Chen
> Assignee: Mikhail Sokolov
> Priority: Major
> Labels: pull-request-available
>
> Given the popularity of Flink SQL and Kafka as streaming source, we want to
> add some examples of using Kafka JSON/Avro TableSource in
> flink-examples/flink-examples-table module.
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