Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1941#discussion_r62018227
--- Diff:
flink-batch-connectors/flink-jdbc/src/main/java/org/apache/flink/api/java/io/jdbc/JDBCInputFormat.java
---
@@ -21,57 +21,103 @@
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
+import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
-import java.sql.Statement;
-
-import org.apache.flink.api.common.io.NonParallelInput;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import java.util.Arrays;
import org.apache.flink.api.common.io.DefaultInputSplitAssigner;
import org.apache.flink.api.common.io.RichInputFormat;
import org.apache.flink.api.common.io.statistics.BaseStatistics;
+import org.apache.flink.api.java.io.QueryParamInputSplit;
+import org.apache.flink.api.java.io.jdbc.split.JDBCInputSplitsGenerator;
import org.apache.flink.api.java.tuple.Tuple;
+import org.apache.flink.api.table.Row;
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.types.NullValue;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
/**
* InputFormat to read data from a database and generate tuples.
* The InputFormat has to be configured using the supplied
InputFormatBuilder.
*
+ * Remark: split (if set) works only if the split column is numeric
+ *
* @param <OUT>
* @see Tuple
* @see DriverManager
*/
-public class JDBCInputFormat<OUT extends Tuple> extends
RichInputFormat<OUT, InputSplit> implements NonParallelInput {
- private static final long serialVersionUID = 1L;
+public class JDBCInputFormat extends RichInputFormat<Row, InputSplit> {
--- End diff --
Can you update the JavaDocs of this class and its methods?
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