hadoop EntryStatus 源码
haddop EntryStatus 代码
文件路径：/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/committer/manifest/files/EntryStatus.java
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.mapreduce.lib.output.committer.manifest.files;
import javax.annotation.Nullable;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.FileStatus;
/**
* Status of a file or dir entry, designed to be marshalled as
* an integer -the ordinal value of the enum is the
* wire value.
*/
@InterfaceAudience.Private
@InterfaceStability.Unstable
public enum EntryStatus {
unknown,
not_found,
file,
dir,
created_dir;
/**
* Go from a marshalled type to a status value.
* Any out of range value is converted to unknown.
* @param type type
* @return the status value.
*/
public static EntryStatus toEntryStatus(int type) {
switch (type) {
case 1:
return not_found;
case 2:
return file;
case 3:
return dir;
case 4:
return created_dir;
case 0:
default:
return unknown;
}
}
/**
* Go from the result of a getFileStatus call or
* listing entry to a status.
* A null argument is mapped to {@link #not_found}
* @param st file status
* @return the status enum.
*/
public static EntryStatus toEntryStatus(@Nullable FileStatus st) {
if (st == null) {
return not_found;
}
if (st.isDirectory()) {
return dir;
}
if (st.isFile()) {
return file;
}
return unknown;
}
}
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