Internal Exception: java.lang.NullPointerException: Cannot invoke "org.eclipse.persistence.internal.jpa.jpql.Declaration.getDescriptor ()" because the return value of "org.eclipse.persistence.internal ...
It doesn’t take much Java development experience to learn firsthand what the NullPointerException is about. In fact, one person has highlighted dealing with this as the number one mistake Java ...
The JPQL UPDATE query UPDATE Person SET firstName=:newFirstName WHERE id (this)=:ssn which optionally omits the entity identification variable (for consistency with JDQL) gets NullPointerException out ...
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