节点setProperty由于违反约束而在Magnolia CMS中提供RepositoryException

Question

我需要为节点设置以下所有属性，并且我得到一个RepositoryException

'jcr:createdBy': 'admin'
'hideInNav': 'true'
'mgnl:template': 'something'
'jcr:created': '2020-01-09T14:14:13.555+01:00'
'mgnl:created': '2020-01-09T14:14:13.555+01:00'
'mgnl:createdBy': 'superuser'
'jcr:uuid': 'df7227a7-39e2-4e15-8d26-16b8b0657049'
'title': 'Sitemap'
'mgnl:lastModified': '2020-01-09T16:04:11.820+01:00'
'jcr:primaryType': 'mgnl:page'
'mgnl:lastModifiedBy': 'superuser'

这是我在循环中用于为节点设置以上属性的代码：

try {
     String value= (String)entry.getValue();
     node.setProperty(entry.getKey(), value);
           }

} catch (ItemNotFoundException e) {
                // TODO Auto-generated catch block
            e.printStackTrace();
} catch (RepositoryException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
}

并且RepositoryException的堆栈跟踪为：

javax.jcr.nodetype.ConstraintViolationException: Unable to perform operation. Node is protected.
        at org.apache.jackrabbit.core.ItemValidator.checkCondition(ItemValidator.java:276)
        at org.apache.jackrabbit.core.ItemValidator.checkModify(ItemValidator.java:248)
        at org.apache.jackrabbit.core.PropertyImpl.checkSetValue(PropertyImpl.java:278)
        at org.apache.jackrabbit.core.PropertyImpl.setValue(PropertyImpl.java:726)
        at org.apache.jackrabbit.core.NodeImpl$SetPropertyOperation.perform(NodeImpl.java:2058)
        at org.apache.jackrabbit.core.NodeImpl$SetPropertyOperation.perform(NodeImpl.java:2002)
        at org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:216)
        at org.apache.jackrabbit.core.NodeImpl.setProperty(NodeImpl.java:1924)
        at org.apache.jackrabbit.core.NodeImpl.setProperty(NodeImpl.java:1894)

有什么建议吗？您可以设置或不能设置哪些属性有任何限制？

Answer 1

简单的答案是：不要。您不应为jcr:或mgnl:任何属性设置值。如果您尝试设置提醒值，它将很好用。