Question

dataNucleus 5.1.1：dnSetid NoSuchMethodError

@MappedSuperclass
public class Foo {

    @Transient
    public Long getId() {
        ...
    }

    public void setId(Long id) {
        ...
    }
}

@Entity
public class Bar extends Foo {
    @Id
    @GeneratedValue(strategy=GenerationType.TABLE, generator="gen")
    @TableGenerator(name="gen", ...)
    public Long getId() {
       ...
    }
}

java.lang.NoSuchMethodError：com.example.Bar类中没有虚方法dnSetid（Long）

    at com.example.Bar.dnCopyKeyFieldsFromObjectId(Unknown Source:15)

    at com.example.Bar.dnNewInstance(Unknown Source:10)

    at org.datanucleus.enhancer.EnhancementHelper.newInstance(EnhancementHelper.java:178)

at org.datanucleus.state.StateManagerImpl.initialiseForHollow(StateManagerImpl.java:373)

at org.datanucleus.state.ObjectProviderFactoryImpl.newForHollow(ObjectProviderFactoryImpl.java:113)

    at org.datanucleus.ExecutionContextImpl.findObject(ExecutionContextImpl.java:3194)

    at org.datanucleus.store.rdbms.query.PersistentClassROF.findObjectWithIdAndLoadFields(PersistentClassROF.java:458)

    at org.datanucleus.store.rdbms.query.PersistentClassROF.getObject(PersistentClassROF.java:364)

    at org.datanucleus.store.rdbms.query.ForwardQueryResult.nextResultSetElement(ForwardQueryResult.java:180)

    at org.datanucleus.store.rdbms.query.ForwardQueryResult$QueryResultIterator.next(ForwardQueryResult.java:408)

    at org.datanucleus.store.rdbms.query.ForwardQueryResult.processNumberOfResults(ForwardQueryResult.java:136)

    at org.datanucleus.store.rdbms.query.ForwardQueryResult.advanceToEndOfResultSet(ForwardQueryResult.java:164)

    at org.datanucleus.store.rdbms.query.ForwardQueryResult.closingConnection(ForwardQueryResult.java:290)

    at org.datanucleus.store.query.AbstractQueryResult.disconnect(AbstractQueryResult.java:105)

    at org.datanucleus.store.rdbms.query.AbstractRDBMSQueryResult.disconnect(AbstractRDBMSQueryResult.java:251)

    at org.datanucleus.store.rdbms.query.JPQLQuery$2.managedConnectionPreClose(JPQLQuery.java:654)

    at org.datanucleus.store.rdbms.ConnectionFactoryImpl$ManagedConnectionImpl.close(ConnectionFactoryImpl.java:532)

    at org.datanucleus.store.connection.AbstractManagedConnection.release(AbstractManagedConnection.java:83)

    at org.datanucleus.store.rdbms.ConnectionFactoryImpl$ManagedConnectionImpl.release(ConnectionFactoryImpl.java:371)

    at org.datanucleus.store.rdbms.query.JPQLQuery.performExecute(JPQLQuery.java:730)

    at org.datanucleus.store.query.Query.executeQuery(Query.java:1966)

    at org.datanucleus.store.query.Query.executeWithMap(Query.java:1873)

应通过增强添加dnSetid。反编译的Bar.class：没有这样的方法。它包含dnGetid（）和其他方法dn ****。

Answer 1

覆盖的唯一方法是覆盖BOTH getter AND setter。可能增强器依赖于存在，无论是对于已定义的属性还是被覆盖的属性。

dataNucleus增强运行时错误：dnSetid NoSuchMethodError

1 个答案: