Fix PersistenceUnitReader to correctly read <exclude-unlisted-classes>
in both JPA 1.0 and 2.0 persistence.xml files.
Prior to this commit PersistenceUnitReader would set the value of
excludeUnlistedClasses to true when a <exclude-unlisted-classes> element
was present, regardless of its value.
The following rules are now used when parsing:
- If the <exclude-unlisted-classes> element is missing the appropriate
default value is set (based on the JPA version).
- If an empty <exclude-unlisted-classes/> element is found the
excludeUnlistedClasses property is set to true.
- Otherwise the value of the <exclude-unlisted-classes> element is used
to set the excludeUnlistedClasses property.
Issue: SPR-10767
(cherry picked from 7ad540d)
Conflicts:
spring-orm/src/main/java/org/springframework/orm/jpa/persistenceunit/PersistenceUnitReader.java
e608055021