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/*
* 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.drill.exec.planner;
import org.apache.hadoop.fs.Path;
/**
* Class defines a single partition in a DFS table.
*/
public class DFSFilePartitionLocation extends SimplePartitionLocation {
private final String[] dirs;
private final String file;
public DFSFilePartitionLocation(int max, String selectionRoot, String file, boolean hasDirsOnly) {
this.file = file;
this.dirs = new String[max];
// strip the scheme and authority if they exist
selectionRoot = Path.getPathWithoutSchemeAndAuthority(new Path(selectionRoot)).toString();
int start = file.indexOf(selectionRoot) + selectionRoot.length();
String postPath = file.substring(start);
if (postPath.length() == 0) {
return;
}
if(postPath.charAt(0) == '/'){
postPath = postPath.substring(1);
}
String[] mostDirs = postPath.split("/");
int maxLoop = Math.min(max, hasDirsOnly ? mostDirs.length : mostDirs.length - 1);
for(int i =0; i < maxLoop; i++) {
this.dirs[i] = mostDirs[i];
}
}
/**
* Returns the value for a give partition key
* @param index - Index of the partition key whose value is to be returned
* @return The value for a partition.
*/
@Override
public String getPartitionValue(int index) {
assert index < dirs.length;
return dirs[index];
}
/**
* Return the full location of this partition
* @return The partition location.
*/
@Override
public String getEntirePartitionLocation() {
return file;
}
public String[] getDirs() {
return dirs;
}
}
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