[CAY-2631] Can no longer use "byte[]" as root of scalar SQLSelect

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.1.RC1
• Fix Version/s: 4.1.RC2, 4.2.M1
• Environment: Derby DB (this fails in a test), Cayenne 4.1.RC1
• Assignee: Nikita Timofeev
• Reporter: Andrus Adamchik
• Created: 16/Oct/19 15:47
• Updated: 18/Oct/19 09:07
• Resolved: 18/Oct/19 09:07

Description

Just switched from 4.0.x to 4.1.RC1. The following query that worked before started printing warnings and throwing an exception:

// "bytes" 
byte[] bytes = SQLSelect
	.scalarQuery(byte[].class, "SELECT bytes FROM sometable")
	.selectOne(context);

o.a.c.a.t.SerializableTypeFactory: Haven't found suitable ExtendedType for class 'byte[]'. Most likely you need to define a custom ExtendedType.
o.a.c.a.t.SerializableTypeFactory: SerializableType will be used for type conversion.
o.a.c.l.JdbcEventLogger: *** error.
java.io.StreamCorruptedException: invalid stream header: 79FC63D0
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:808)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:301)
at org.apache.cayenne.access.types.SerializableTypeFactory$SerializableType.toJavaObject(SerializableTypeFactory.java:106)
at org.apache.cayenne.access.types.SerializableTypeFactory$SerializableType.toJavaObject(SerializableTypeFactory.java:70)
at org.apache.cayenne.access.types.ExtendedTypeDecorator.materializeObject(ExtendedTypeDecorator.java:53)
at org.apache.cayenne.access.jdbc.reader.ScalarRowReader.readRow(ScalarRowReader.java:50)

The cause seems to related to the incorrect class name extraction for "byte[]" class, so extended type lookup is failing.