org.apache.flink.api.java.io.jdbc.split.GenericParameterValuesProvider Java Examples

The following examples show how to use org.apache.flink.api.java.io.jdbc.split.GenericParameterValuesProvider. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example #1

Source File: JDBCInputFormatTest.java From Flink-CEPplus with Apache License 2.0

6 votes

@Test
public void testJDBCInputFormatWithParallelismAndGenericSplitting() throws IOException {
	Serializable[][] queryParameters = new String[2][1];
	queryParameters[0] = new String[]{TEST_DATA[3].author};
	queryParameters[1] = new String[]{TEST_DATA[0].author};
	ParameterValuesProvider paramProvider = new GenericParameterValuesProvider(queryParameters);
	jdbcInputFormat = JDBCInputFormat.buildJDBCInputFormat()
			.setDrivername(DRIVER_CLASS)
			.setDBUrl(DB_URL)
			.setQuery(JDBCTestBase.SELECT_ALL_BOOKS_SPLIT_BY_AUTHOR)
			.setRowTypeInfo(ROW_TYPE_INFO)
			.setParametersProvider(paramProvider)
			.setResultSetType(ResultSet.TYPE_SCROLL_INSENSITIVE)
			.finish();

	jdbcInputFormat.openInputFormat();
	InputSplit[] splits = jdbcInputFormat.createInputSplits(1);
	//this query exploit parallelism (1 split for every queryParameters row)
	Assert.assertEquals(queryParameters.length, splits.length);

	verifySplit(splits[0], TEST_DATA[3].id);
	verifySplit(splits[1], TEST_DATA[0].id + TEST_DATA[1].id);

	jdbcInputFormat.closeInputFormat();
}

Example #2

Source File: JDBCInputFormatTest.java From flink with Apache License 2.0

6 votes

@Test
public void testJDBCInputFormatWithParallelismAndGenericSplitting() throws IOException {
	Serializable[][] queryParameters = new String[2][1];
	queryParameters[0] = new String[]{TEST_DATA[3].author};
	queryParameters[1] = new String[]{TEST_DATA[0].author};
	ParameterValuesProvider paramProvider = new GenericParameterValuesProvider(queryParameters);
	jdbcInputFormat = JDBCInputFormat.buildJDBCInputFormat()
			.setDrivername(DRIVER_CLASS)
			.setDBUrl(DB_URL)
			.setQuery(JDBCTestBase.SELECT_ALL_BOOKS_SPLIT_BY_AUTHOR)
			.setRowTypeInfo(ROW_TYPE_INFO)
			.setParametersProvider(paramProvider)
			.setResultSetType(ResultSet.TYPE_SCROLL_INSENSITIVE)
			.finish();

	jdbcInputFormat.openInputFormat();
	InputSplit[] splits = jdbcInputFormat.createInputSplits(1);
	//this query exploit parallelism (1 split for every queryParameters row)
	Assert.assertEquals(queryParameters.length, splits.length);

	verifySplit(splits[0], TEST_DATA[3].id);
	verifySplit(splits[1], TEST_DATA[0].id + TEST_DATA[1].id);

	jdbcInputFormat.closeInputFormat();
}

Example #3

Source File: JDBCInputFormatTest.java From flink with Apache License 2.0

6 votes

@Test
public void testJDBCInputFormatWithParallelismAndGenericSplitting() throws IOException {
	Serializable[][] queryParameters = new String[2][1];
	queryParameters[0] = new String[]{TEST_DATA[3].author};
	queryParameters[1] = new String[]{TEST_DATA[0].author};
	ParameterValuesProvider paramProvider = new GenericParameterValuesProvider(queryParameters);
	jdbcInputFormat = JDBCInputFormat.buildJDBCInputFormat()
			.setDrivername(DERBY_EBOOKSHOP_DB.getDriverClass())
			.setDBUrl(DERBY_EBOOKSHOP_DB.getUrl())
			.setQuery(SELECT_ALL_BOOKS_SPLIT_BY_AUTHOR)
			.setRowTypeInfo(ROW_TYPE_INFO)
			.setParametersProvider(paramProvider)
			.setResultSetType(ResultSet.TYPE_SCROLL_INSENSITIVE)
			.finish();

	jdbcInputFormat.openInputFormat();
	InputSplit[] splits = jdbcInputFormat.createInputSplits(1);
	//this query exploit parallelism (1 split for every queryParameters row)
	Assert.assertEquals(queryParameters.length, splits.length);

	verifySplit(splits[0], TEST_DATA[3].id);
	verifySplit(splits[1], TEST_DATA[0].id + TEST_DATA[1].id);

	jdbcInputFormat.closeInputFormat();
}