Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/3686#discussion_r110160658
--- Diff:
flink-connectors/flink-jdbc/src/test/java/org/apache/flink/api/java/io/jdbc/JDBCInputFormatTest.java
---
@@ -180,6 +180,52 @@ public void
testJDBCInputFormatWithParallelismAndNumericColumnSplitting() throws
jdbcInputFormat.closeInputFormat();
Assert.assertEquals(testData.length, recordCount);
}
+ @Test
+ public void
testJDBCInputFormatWithoutParallelismAndNumericColumnSplitting() throws
IOException, InstantiationException, IllegalAccessException {
+ final Long min = new Long(JDBCTestBase.testData[0][0] + "");
+ final Long max = new
Long(JDBCTestBase.testData[JDBCTestBase.testData.length - 1][0] + "");
+ final long fetchSize = max + 1;//generate a single split
+ ParameterValuesProvider pramProvider = new
NumericBetweenParametersProvider(fetchSize, min, max);
+ jdbcInputFormat = JDBCInputFormat.buildJDBCInputFormat()
+ .setDrivername(DRIVER_CLASS)
+ .setDBUrl(DB_URL)
+
.setQuery(JDBCTestBase.SELECT_ALL_BOOKS_SPLIT_BY_ID)
+ .setRowTypeInfo(rowTypeInfo)
+ .setParametersProvider(pramProvider)
+
.setResultSetType(ResultSet.TYPE_SCROLL_INSENSITIVE)
+ .finish();
+
+ jdbcInputFormat.openInputFormat();
+ InputSplit[] splits = jdbcInputFormat.createInputSplits(1);
+ //assert that a single split was generated
+ Assert.assertEquals(1, splits.length);
+ int recordCount = 0;
+ Row row = new Row(5);
+ for (int i = 0; i < splits.length; i++) {
+ jdbcInputFormat.open(splits[i]);
+ while (!jdbcInputFormat.reachedEnd()) {
+ Row next = jdbcInputFormat.nextRecord(row);
+ if (next == null) {
+ break;
+ }
+ if(next.getField(0)!=null) {
Assert.assertEquals("Field 0 should be int", Integer.class,
next.getField(0).getClass());}
+ if(next.getField(1)!=null) {
Assert.assertEquals("Field 1 should be String", String.class,
next.getField(1).getClass());}
+ if(next.getField(2)!=null) {
Assert.assertEquals("Field 2 should be String", String.class,
next.getField(2).getClass());}
+ if(next.getField(3)!=null) {
Assert.assertEquals("Field 3 should be float", Double.class,
next.getField(3).getClass());}
+ if(next.getField(4)!=null) {
Assert.assertEquals("Field 4 should be int", Integer.class,
next.getField(4).getClass());}
+
+ for (int x = 0; x < 5; x++) {
+ if(testData[recordCount][x]!=null) {
--- End diff --
use the Flink `Preconditions` class, specifically the `checkArgument()`.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
