example/flink-sql/src/main/java/org/apache/iotdb/example/CDCExample.java

/*
 * 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.iotdb.example;

import org.apache.flink.table.api.DataTypes;
import org.apache.flink.table.api.EnvironmentSettings;
import org.apache.flink.table.api.Schema;
import org.apache.flink.table.api.TableDescriptor;
import org.apache.flink.table.api.TableEnvironment;

public class CDCExample {
  public static void main(String[] args) {
    // setup environment
    EnvironmentSettings settings = EnvironmentSettings.newInstance().inStreamingMode().build();
    TableEnvironment tableEnv = TableEnvironment.create(settings);
    // setup schema
    Schema iotdbTableSchema =
        Schema.newBuilder()
            .column("Time_", DataTypes.BIGINT())
            .column("root.sg.d0.s0", DataTypes.FLOAT())
            .column("root.sg.d1.s0", DataTypes.FLOAT())
            .column("root.sg.d1.s1", DataTypes.FLOAT())
            .build();

    // register table
    TableDescriptor iotdbDescriptor =
        TableDescriptor.forConnector("IoTDB")
            .schema(iotdbTableSchema)
            .option("mode", "CDC")
            .option("cdc.task.name", "test")
            .option("cdc.pattern", "root.sg")
            .build();
    tableEnv.createTemporaryTable("iotdbTable", iotdbDescriptor);

    // output table
    tableEnv.from("iotdbTable").execute().print();
  }
}