import org.apache.hadoop.hdfs.server.namenode.INodeReference.DstReference; //导入依赖的package包/类
private INodeReference loadINodeReference(
    INodeReferenceSection.INodeReference r) throws IOException {
  long referredId = r.getReferredId();
  INode referred = fsDir.getInode(referredId);
  WithCount withCount = (WithCount) referred.getParentReference();
  if (withCount == null) {
    withCount = new INodeReference.WithCount(null, referred);
  }
  final INodeReference ref;
  if (r.hasDstSnapshotId()) { // DstReference
    ref = new INodeReference.DstReference(null, withCount,
        r.getDstSnapshotId());
  } else {
    ref = new INodeReference.WithName(null, withCount, r.getName()
        .toByteArray(), r.getLastSnapshotId());
  }
  return ref;
}
 

import org.apache.hadoop.hdfs.server.namenode.INodeReference.DstReference; //导入依赖的package包/类
private INodeReferenceSection.INodeReference.Builder buildINodeReference(
    INodeReference ref) throws IOException {
  INodeReferenceSection.INodeReference.Builder rb =
      INodeReferenceSection.INodeReference.newBuilder().
        setReferredId(ref.getId());
  if (ref instanceof WithName) {
    rb.setLastSnapshotId(((WithName) ref).getLastSnapshotId()).setName(
        ByteString.copyFrom(ref.getLocalNameBytes()));
  } else if (ref instanceof DstReference) {
    rb.setDstSnapshotId(ref.getDstSnapshotId());
  }
  return rb;
}
 

import org.apache.hadoop.hdfs.server.namenode.INodeReference.DstReference; //导入依赖的package包/类
private INodeReferenceSection.INodeReference.Builder buildINodeReference(
    INodeReference ref) throws IOException {
  INodeReferenceSection.INodeReference.Builder rb =
      INodeReferenceSection.INodeReference.newBuilder().
        setReferredId(ref.getId());
  if (ref instanceof WithName) {
    rb.setLastSnapshotId(((WithName) ref).getLastSnapshotId()).setName(
        ByteString.copyFrom(ref.getLocalNameBytes()));
  } else if (ref instanceof DstReference) {
    rb.setDstSnapshotId(((DstReference) ref).getDstSnapshotId());
  }
  return rb;
}