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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 Tue, 25 Sep 2018 12:16:36 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_r220164741
 
 

 ##########
 File path: flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/batch/connectors/cassandra/CassandraInputFormatBase.java
 ##########
 @@ -0,0 +1,102 @@
+/*
+ * 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.api.common.io.DefaultInputSplitAssigner;
+import org.apache.flink.api.common.io.NonParallelInput;
+import org.apache.flink.api.common.io.RichInputFormat;
+import org.apache.flink.api.common.io.statistics.BaseStatistics;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.core.io.GenericInputSplit;
+import org.apache.flink.core.io.InputSplit;
+import org.apache.flink.core.io.InputSplitAssigner;
+import org.apache.flink.streaming.connectors.cassandra.ClusterBuilder;
+import org.apache.flink.util.Preconditions;
+
+import org.apache.flink.shaded.guava18.com.google.common.base.Strings;
+
+import com.datastax.driver.core.Cluster;
+import com.datastax.driver.core.Session;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Base class for {@link RichInputFormat} read data from Apache Cassandra and generate a
custom Cassandra annotated object.
+ * @param <OUT> type of inputClass
+ */
+abstract class CassandraInputFormatBase<OUT> extends RichInputFormat<OUT, InputSplit>
implements NonParallelInput {
+	private static final Logger LOG = LoggerFactory.getLogger(CassandraInputFormatBase.class);
+	private static final long serialVersionUID = -1519372881115104601L;
+
+	final String query;
+	final ClusterBuilder builder;
 
 Review comment:
   can be private

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