org.apache.hadoop.hbase.client.MultiAction Maven / Gradle / Ivy
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*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
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* 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,
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* See the License for the specific language governing permissions and
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*/
package org.apache.hadoop.hbase.client;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.hbase.util.Bytes;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
/**
* Container for Actions (i.e. Get, Delete, or Put), which are grouped by
* regionName. Intended to be used with HConnectionManager.processBatch()
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
public final class MultiAction {
// TODO: This class should not be visible outside of the client package.
// map of regions to lists of puts/gets/deletes for that region.
public Map>> actions =
new TreeMap>>(Bytes.BYTES_COMPARATOR);
public MultiAction() {
super();
}
/**
* Get the total number of Actions
*
* @return total number of Actions for all groups in this container.
*/
public int size() {
int size = 0;
for (List l : actions.values()) {
size += l.size();
}
return size;
}
/**
* Add an Action to this container based on it's regionName. If the regionName
* is wrong, the initial execution will fail, but will be automatically
* retried after looking up the correct region.
*
* @param regionName
* @param a
*/
public void add(byte[] regionName, Action a) {
List> rsActions = actions.get(regionName);
if (rsActions == null) {
rsActions = new ArrayList>();
actions.put(regionName, rsActions);
}
rsActions.add(a);
}
public Set getRegions() {
return actions.keySet();
}
/**
* @return All actions from all regions in this container
*/
public List> allActions() {
List> res = new ArrayList>();
for (List> lst : actions.values()) {
res.addAll(lst);
}
return res;
}
}