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From GitBox <...@apache.org>
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 18:37:51 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_r219934197
 
 

 ##########
 File path: flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/batch/connectors/cassandra/CassandraPojoInputFormat.java
 ##########
 @@ -0,0 +1,78 @@
+/*
+ * 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;
+
+import org.apache.flink.core.io.InputSplit;
+import org.apache.flink.streaming.connectors.cassandra.ClusterBuilder;
+import org.apache.flink.streaming.connectors.cassandra.MapperOptions;
+import org.apache.flink.util.Preconditions;
+
+import com.datastax.driver.mapping.Mapper;
+import com.datastax.driver.mapping.MappingManager;
+import com.datastax.driver.mapping.Result;
+
+import java.io.IOException;
+
+/**
+ * InputFormat to read data from Apache Cassandra and generate a custom Cassandra annotated
object.
+ *
+ * @param <OUT> type of inputClass
+ */
+public class CassandraPojoInputFormat<OUT> extends CassandraInputFormatBase<OUT>
{
+
+	private static final long serialVersionUID = 1992091320180905115L;
+	private final MapperOptions mapperOptions;
+
+	private transient Result<OUT> resultSet;
+	private Class<OUT> inputClass;
+
+	public CassandraPojoInputFormat(String query, ClusterBuilder builder, Class<OUT> inputClass)
{
+		this(query, builder, inputClass, null);
+	}
+
+	public CassandraPojoInputFormat(String query, ClusterBuilder builder, Class<OUT> inputClass,
MapperOptions mapperOptions) {
+		super(query, builder);
+		this.mapperOptions = mapperOptions;
+		Preconditions.checkArgument(inputClass != null, "InputClass cannot be null");
 
 Review comment:
   `checkNotNull`

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