vertx-oracle-client PreparedStatement fails to retrieve RAW column

[mdemont-verimatrix]

Version

At least version 4.5.13 has this issue

Context

I encountered an exception which looks suspicious while using vertx-oracle stream API to fetch data from a RAW column.
There is no issue with the regular "Prepared queries" API
The stack trace is:

Caused by: java.sql.SQLException: ORA-17282: Class argument to getObject is null.
https://docs.oracle.com/error-help/db/ora-17282/
	at oracle.jdbc.driver.Accessor.getObject(Accessor.java:1043)
	at oracle.jdbc.driver.OracleStatement.getObject(OracleStatement.java:7407)
	at oracle.jdbc.driver.InsensitiveScrollableResultSet$RowPublisher$ExpiringRow.getObject(InsensitiveScrollableResultSet.java:1487)
	at io.vertx.oracleclient.impl.RowReader.transform(RowReader.java:182)
	at io.vertx.oracleclient.impl.RowReader.apply(RowReader.java:173)
	at io.vertx.oracleclient.impl.RowReader.apply(RowReader.java:38)
	at oracle.jdbc.driver.InsensitiveScrollableResultSet$RowPublisher.mapCurrentRow(InsensitiveScrollableResultSet.java:1361)
	at oracle.jdbc.driver.InsensitiveScrollableResultSet$RowPublisher.requestNext(InsensitiveScrollableResultSet.java:1319)
	at oracle.jdbc.driver.PhasedPublisher$PublishingPhaser.onAdvance(PhasedPublisher.java:233)
	at java.base/java.util.concurrent.Phaser.doArrive(Phaser.java:395)
	at java.base/java.util.concurrent.Phaser.arrive(Phaser.java:630)
	at oracle.jdbc.driver.PhasedPublisher$PhasedSubscription.arriveForNextPhase(PhasedPublisher.java:683)
	at oracle.jdbc.driver.PhasedPublisher$PhasedSubscription.request(PhasedPublisher.java:639)
	at io.vertx.oracleclient.impl.RowReader.lambda$read$1(RowReader.java:105)
	at io.vertx.oracleclient.impl.Helper$SQLBlockingTaskHandler.handle(Helper.java:321)
	at io.vertx.oracleclient.impl.Helper$SQLBlockingTaskHandler.handle(Helper.java:313)
	at io.vertx.core.impl.ContextImpl.lambda$executeBlocking$5(ContextImpl.java:205)
	at io.vertx.core.impl.ContextInternal.dispatch(ContextInternal.java:270)
	at io.vertx.core.impl.ContextImpl$1.execute(ContextImpl.java:221)
	at io.vertx.core.impl.WorkerTask.run(WorkerTask.java:56)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.base/java.lang.Thread.run(Thread.java:1583)

Do you have a reproducer?

I have a reproducer along with a "dumb" fix in my branch.
turakamou@e5f038e
If you comment out the small fix in RowReader.java, you'll get the exception when passing the new test testDecodeUsingStream

[mdemont-verimatrix]

I'm sorry to ask what may be a dumb question, I'm not used to contribute.
But do you need something from me to help on this bug and the fix?

[vietj]

@mdemont-verimatrix open a PR with the fix and make sure to sign the contributor agreement, the PR will shows the contributor agreement validation

[vietj]

that would be great you provide this fix :-)

[mdemont-verimatrix]

Here is a pull request.
#1498
I hope I was right to do it against master branch as it would also need to be cherry-picked for 4.x branch.

[tsegismont]

Fxied by #1500