Pg Client might convert a query param to NULL if it has the wrong type

[tsegismont]

Originally reported in #1281

As an example, if the query has a parameter of type interval, mapped by io.vertx.pgclient.data.Interval, and the user puts a java.time.Duration, then PgClient will set the value to NULL.

It happens here:

vertx-sql-client/vertx-pg-client/src/main/java/io/vertx/pgclient/impl/codec/PgParamDesc.java

Lines 53 to 62 in cc9803f

	Object val;
	try {
	if (extractor != null) {
	val = extractor.get(values, i);
	} else {
	val = values.get(paramDataType.encodingType, i);
	}
	} catch (Exception e) {
	return ErrorMessageFactory.buildWhenArgumentsTypeNotMatched(paramDataType.decodingType, i, values.getValue(i));
	}

We would expect the client to reject the query using a message generated by buildWhenArgumentsTypeNotMatched.

But the INTERVAL data type is defined without a type extractor:

INTERVAL(1186, true, Interval.class, JDBCType.DATE),

So the client invokes values.get(paramDataType.encodingType, i);

And there the returned value is null because Interval is not assignable from Duration:

vertx-sql-client/vertx-sql-client/src/main/java/io/vertx/sqlclient/Tuple.java

Lines 1716 to 1719 in 2de7f0d

	if (value != null && type.isAssignableFrom(value.getClass())) {
	return type.cast(value);
	}
	return null;

[tsegismont]

Fixed by #1464