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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.client;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.util.Collections;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.Map;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.Set;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.TreeMap;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.TreeSet;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span><a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span><a name="line.29"></a> |
| <span class="sourceLineNo">030</span>@InterfaceAudience.Public<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>public final class TableDescriptorUtils {<a name="line.31"></a> |
| <span class="sourceLineNo">032</span> public final static class TableDescriptorDelta {<a name="line.32"></a> |
| <span class="sourceLineNo">033</span> private final Set<byte[]> columnsAdded;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> private final Set<byte[]> columnsDeleted;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> private final Set<byte[]> columnsModified;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span><a name="line.36"></a> |
| <span class="sourceLineNo">037</span> private TableDescriptorDelta(TableDescriptor oldTD, TableDescriptor newTD) {<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> Preconditions.checkNotNull(oldTD);<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> Preconditions.checkNotNull(newTD);<a name="line.39"></a> |
| <span class="sourceLineNo">040</span><a name="line.40"></a> |
| <span class="sourceLineNo">041</span> Map<byte[], ColumnFamilyDescriptor> oldCFs = new TreeMap<>(Bytes.BYTES_COMPARATOR);<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> Set<byte[]> newCFs = new TreeSet<>(Bytes.BYTES_COMPARATOR);<a name="line.42"></a> |
| <span class="sourceLineNo">043</span><a name="line.43"></a> |
| <span class="sourceLineNo">044</span> // CFD -> (name, CFD)<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> for (ColumnFamilyDescriptor cfd : oldTD.getColumnFamilies()) {<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> oldCFs.put(cfd.getName(), cfd);<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> }<a name="line.47"></a> |
| <span class="sourceLineNo">048</span><a name="line.48"></a> |
| <span class="sourceLineNo">049</span> Set<byte[]> added = new TreeSet<>(Bytes.BYTES_COMPARATOR);<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> Set<byte[]> modified = new TreeSet<>(Bytes.BYTES_COMPARATOR);<a name="line.50"></a> |
| <span class="sourceLineNo">051</span><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> for (ColumnFamilyDescriptor cfd : newTD.getColumnFamilies()) {<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> byte[] cfName = cfd.getName();<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> newCFs.add(cfName);<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> if (!oldCFs.containsKey(cfName)) {<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> // If column family is in newTD but not oldTD, then it was added<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> added.add(cfName);<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> } else if (!cfd.equals(oldCFs.get(cfName))) {<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> // If column family is in both, but not equal, then it was modified<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> modified.add(cfName);<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> }<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> }<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> // If column family is in oldTD, but not in newTD, then it got deleted.<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> Set<byte[]> deleted = oldCFs.keySet();<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> deleted.removeAll(newCFs);<a name="line.67"></a> |
| <span class="sourceLineNo">068</span><a name="line.68"></a> |
| <span class="sourceLineNo">069</span> columnsAdded = Collections.unmodifiableSet(added);<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> columnsDeleted = Collections.unmodifiableSet(deleted);<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> columnsModified = Collections.unmodifiableSet(modified);<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> }<a name="line.72"></a> |
| <span class="sourceLineNo">073</span><a name="line.73"></a> |
| <span class="sourceLineNo">074</span> public Set<byte[]> getColumnsAdded() {<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> return columnsAdded;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> }<a name="line.76"></a> |
| <span class="sourceLineNo">077</span><a name="line.77"></a> |
| <span class="sourceLineNo">078</span> public Set<byte[]> getColumnsDeleted() {<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> return columnsDeleted;<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> }<a name="line.80"></a> |
| <span class="sourceLineNo">081</span><a name="line.81"></a> |
| <span class="sourceLineNo">082</span> public Set<byte[]> getColumnsModified() {<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> return columnsModified;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> }<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> }<a name="line.85"></a> |
| <span class="sourceLineNo">086</span><a name="line.86"></a> |
| <span class="sourceLineNo">087</span> private TableDescriptorUtils() {<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> }<a name="line.88"></a> |
| <span class="sourceLineNo">089</span><a name="line.89"></a> |
| <span class="sourceLineNo">090</span> /**<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * Compares two {@link TableDescriptor} and indicate which columns were added, deleted, or<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> * modified from oldTD to newTD<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> * @return a TableDescriptorDelta that contains the added/deleted/modified column names<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> */<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> public static TableDescriptorDelta computeDelta(TableDescriptor oldTD, TableDescriptor newTD) {<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> return new TableDescriptorDelta(oldTD, newTD);<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> }<a name="line.97"></a> |
| <span class="sourceLineNo">098</span>}<a name="line.98"></a> |
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