simple fix of oracle stream API for RAW column

[turakamou]

Motivation:

At least version 4.5.13 has this issue

I encountered an exception 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)

Here is a simple fix along with a unit test to prove the fix work.

[vietj]

can you describe in your commit : what is the issue and how the commit fixes it

[turakamou]

PS: was I right to propose the commit for master as it will also be needed for 4.x

[turakamou]

And I fact I should have check the unitest on master, seems it doesn't compile.
I'm very sorry, let me check now.

[turakamou]

Should be ok on this test on master
Should I open a new PR with separated commits based on 4.x to merge into 4.x ?

[vietj]

let us run first CI and get @tsegismont to review the patch :-)

[tsegismont]

Thank you for looking into this @turakamou

Can you take care of the fix with my suggestions?

[tsegismont]

@turakamou thank you, this looks good to me!

[tsegismont]

@turakamou I'll wait for CI to complete before merging and will take care of backporting. Thanks again!

[tsegismont]

@turakamou I'll take care of backporting. Thanks again!

[turakamou]

Thanks a lot to you too for the quick help and merge.
And also thanks for backporting to 4.x
And always happy to help.