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Subject [GitHub] azagrebin commented on a change in pull request #6735: [FLINK-9126] New CassandraPojoInputFormat to output data as a custom annotated Cassandra Pojo
Date Mon, 24 Sep 2018 18:37:52 GMT
azagrebin commented on a change in pull request #6735: [FLINK-9126] New CassandraPojoInputFormat
to output data as a custom annotated Cassandra Pojo
URL: https://github.com/apache/flink/pull/6735#discussion_r219942318
 
 

 ##########
 File path: flink-connectors/flink-connector-cassandra/src/test/java/org/apache/flink/batch/connectors/cassandra/example/BatchPojoExample.java
 ##########
 @@ -0,0 +1,82 @@
+/*
+ * 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.batch.connectors.cassandra.example;
+
+import org.apache.flink.api.java.DataSet;
+import org.apache.flink.api.java.ExecutionEnvironment;
+import org.apache.flink.api.java.tuple.Tuple2;
+import org.apache.flink.batch.connectors.cassandra.CassandraPojoInputFormat;
+import org.apache.flink.batch.connectors.cassandra.CassandraTupleOutputFormat;
+import org.apache.flink.batch.connectors.cassandra.CustomCassandraAnnotatedPojo;
+import org.apache.flink.streaming.connectors.cassandra.ClusterBuilder;
+
+import com.datastax.driver.core.Cluster;
+import com.datastax.driver.core.ConsistencyLevel;
+import com.datastax.driver.mapping.Mapper;
+
+import java.util.ArrayList;
+
+/**
+ * This is an example showing the to use the {@link CassandraPojoInputFormat}-/CassandraOutputFormats
in the Batch API.
+ *
+ * <p>The example assumes that a table exists in a local cassandra database, according
to the following queries:
+ * CREATE KEYSPACE IF NOT EXISTS test WITH replication = {'class': 'SimpleStrategy', 'replication_factor':
‘1’};
 
 Review comment:
   I think there is still some mismatch between queries, doc comments, tuples in `dataSet
` and fields of `CustomCassandraAnnotatedPojo`. `testCassandraBatchPojoFormat` looks better
from this side.

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