shubham-j-sde commented on code in PR #34417:
URL: https://github.com/apache/beam/pull/34417#discussion_r2016908794
##########
sdks/java/io/jdbc/src/main/java/org/apache/beam/sdk/io/jdbc/JdbcReadSchemaTransformProvider.java:
##########
@@ -213,25 +214,67 @@ protected JdbcIO.DataSourceConfiguration
dataSourceConfiguration() {
@Override
public PCollectionRowTuple expand(PCollectionRowTuple input) {
- String query = config.getReadQuery();
- if (query == null) {
- query = String.format("SELECT * FROM %s", config.getLocation());
- }
- JdbcIO.ReadRows readRows =
-
JdbcIO.readRows().withDataSourceConfiguration(dataSourceConfiguration()).withQuery(query);
- Integer fetchSize = config.getFetchSize();
- if (fetchSize != null && fetchSize > 0) {
- readRows = readRows.withFetchSize(fetchSize);
+
+ boolean readQueryPresent =
+ (config.getReadQuery() != null && !"".equals(config.getReadQuery()));
+ boolean locationPresent = (config.getLocation() != null &&
!"".equals(config.getLocation()));
+
+ if (readQueryPresent && locationPresent) {
+ throw new IllegalArgumentException("Query and Table are mutually
exclusive configurations");
}
- Boolean outputParallelization = config.getOutputParallelization();
- if (outputParallelization != null) {
- readRows = readRows.withOutputParallelization(outputParallelization);
+ if (!readQueryPresent && !locationPresent) {
+ throw new IllegalArgumentException("Either Query or Table must be
specified.");
}
- Boolean disableAutoCommit = config.getDisableAutoCommit();
- if (disableAutoCommit != null) {
- readRows = readRows.withDisableAutoCommit(disableAutoCommit);
+
+ @Nullable String partitionColumn = config.getPartitionColumn();
+ @Nullable String location = config.getLocation();
+ if (partitionColumn != null) {
+ JdbcIO.ReadWithPartitions<Row, ?> readRowsWithParitions =
+ JdbcIO.<Row>readWithPartitions()
+ .withDataSourceConfiguration(dataSourceConfiguration())
+ .withTable(location)
+ .withPartitionColumn(partitionColumn)
+ .withRowOutput();
+
+ @Nullable Integer partitions = config.getNumPartitions();
+ if (partitions != null) {
+ readRowsWithParitions =
readRowsWithParitions.withNumPartitions(partitions);
+ }
+
+ @Nullable Integer fetchSize = config.getFetchSize();
+ if (fetchSize != null && fetchSize > 0) {
+ readRowsWithParitions =
readRowsWithParitions.withFetchSize(fetchSize);
+ }
+
+ @Nullable Boolean disableAutoCommit = config.getDisableAutoCommit();
+ if (disableAutoCommit != null) {
+ readRowsWithParitions =
readRowsWithParitions.withDisableAutoCommit(disableAutoCommit);
+ }
+ return PCollectionRowTuple.of("output",
input.getPipeline().apply(readRowsWithParitions));
+ } else {
Review Comment:
right, done ✅
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