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<pre><span class="sourceLineNo">001</span>package org.apache.archiva.metadata.repository.cassandra;<a name="line.1"></a>
<span class="sourceLineNo">002</span><a name="line.2"></a>
<span class="sourceLineNo">003</span>/*<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.4"></a>
<span class="sourceLineNo">005</span> * or more contributor license agreements. See the NOTICE file<a name="line.5"></a>
<span class="sourceLineNo">006</span> * distributed with this work for additional information<a name="line.6"></a>
<span class="sourceLineNo">007</span> * regarding copyright ownership. The ASF licenses this file<a name="line.7"></a>
<span class="sourceLineNo">008</span> * to you under the Apache License, Version 2.0 (the<a name="line.8"></a>
<span class="sourceLineNo">009</span> * "License"); you may not use this file except in compliance<a name="line.9"></a>
<span class="sourceLineNo">010</span> * with the License. You may obtain a copy of the License at<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.12"></a>
<span class="sourceLineNo">013</span> *<a name="line.13"></a>
<span class="sourceLineNo">014</span> * Unless required by applicable law or agreed to in writing,<a name="line.14"></a>
<span class="sourceLineNo">015</span> * software distributed under the License is distributed on an<a name="line.15"></a>
<span class="sourceLineNo">016</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.16"></a>
<span class="sourceLineNo">017</span> * KIND, either express or implied. See the License for the<a name="line.17"></a>
<span class="sourceLineNo">018</span> * specific language governing permissions and limitations<a name="line.18"></a>
<span class="sourceLineNo">019</span> * under the License.<a name="line.19"></a>
<span class="sourceLineNo">020</span> */<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>import me.prettyprint.cassandra.serializers.LongSerializer;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import me.prettyprint.cassandra.serializers.SerializerTypeInferer;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import me.prettyprint.cassandra.serializers.StringSerializer;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import me.prettyprint.cassandra.service.template.ColumnFamilyUpdater;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import me.prettyprint.hector.api.Serializer;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import me.prettyprint.hector.api.beans.ColumnSlice;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import me.prettyprint.hector.api.beans.HColumn;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import me.prettyprint.hector.api.factory.HFactory;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import me.prettyprint.hector.api.mutation.Mutator;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.apache.archiva.metadata.repository.cassandra.model.ColumnNames;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.apache.commons.lang3.StringUtils;<a name="line.32"></a>
<span class="sourceLineNo">033</span><a name="line.33"></a>
<span class="sourceLineNo">034</span>/**<a name="line.34"></a>
<span class="sourceLineNo">035</span> * @author Olivier Lamy<a name="line.35"></a>
<span class="sourceLineNo">036</span> * @since 2.0.0<a name="line.36"></a>
<span class="sourceLineNo">037</span> */<a name="line.37"></a>
<span class="sourceLineNo">038</span>public class CassandraUtils<a name="line.38"></a>
<span class="sourceLineNo">039</span>{<a name="line.39"></a>
<span class="sourceLineNo">040</span><a name="line.40"></a>
<span class="sourceLineNo">041</span> private static final String EMPTY_VALUE = "";<a name="line.41"></a>
<span class="sourceLineNo">042</span><a name="line.42"></a>
<span class="sourceLineNo">043</span> public static final String SEPARATOR = "-&gt;";<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span> public static String generateKey( final String... bases )<a name="line.45"></a>
<span class="sourceLineNo">046</span> {<a name="line.46"></a>
<span class="sourceLineNo">047</span> final StringBuilder builder = new StringBuilder();<a name="line.47"></a>
<span class="sourceLineNo">048</span> if ( bases == null || bases.length == 0 )<a name="line.48"></a>
<span class="sourceLineNo">049</span> {<a name="line.49"></a>
<span class="sourceLineNo">050</span> return builder.toString();<a name="line.50"></a>
<span class="sourceLineNo">051</span> }<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span> for ( final String s : bases )<a name="line.53"></a>
<span class="sourceLineNo">054</span> {<a name="line.54"></a>
<span class="sourceLineNo">055</span> if ( s != null )<a name="line.55"></a>
<span class="sourceLineNo">056</span> {<a name="line.56"></a>
<span class="sourceLineNo">057</span> builder.append( s );<a name="line.57"></a>
<span class="sourceLineNo">058</span> }<a name="line.58"></a>
<span class="sourceLineNo">059</span> else<a name="line.59"></a>
<span class="sourceLineNo">060</span> {<a name="line.60"></a>
<span class="sourceLineNo">061</span> builder.append( EMPTY_VALUE );<a name="line.61"></a>
<span class="sourceLineNo">062</span> }<a name="line.62"></a>
<span class="sourceLineNo">063</span> builder.append( SEPARATOR );<a name="line.63"></a>
<span class="sourceLineNo">064</span> }<a name="line.64"></a>
<span class="sourceLineNo">065</span> if ( builder.length() &gt; 0 )<a name="line.65"></a>
<span class="sourceLineNo">066</span> {<a name="line.66"></a>
<span class="sourceLineNo">067</span> builder.setLength( builder.length() - SEPARATOR.length() );<a name="line.67"></a>
<span class="sourceLineNo">068</span> }<a name="line.68"></a>
<span class="sourceLineNo">069</span> return builder.toString();<a name="line.69"></a>
<span class="sourceLineNo">070</span> }<a name="line.70"></a>
<span class="sourceLineNo">071</span><a name="line.71"></a>
<span class="sourceLineNo">072</span> public static &lt;A, B&gt; HColumn&lt;A, B&gt; column( final A name, final B value )<a name="line.72"></a>
<span class="sourceLineNo">073</span> {<a name="line.73"></a>
<span class="sourceLineNo">074</span><a name="line.74"></a>
<span class="sourceLineNo">075</span> return HFactory.createColumn( name, //<a name="line.75"></a>
<span class="sourceLineNo">076</span> value, //<a name="line.76"></a>
<span class="sourceLineNo">077</span> SerializerTypeInferer.getSerializer( name ), //<a name="line.77"></a>
<span class="sourceLineNo">078</span> SerializerTypeInferer.getSerializer( value ) );<a name="line.78"></a>
<span class="sourceLineNo">079</span> }<a name="line.79"></a>
<span class="sourceLineNo">080</span><a name="line.80"></a>
<span class="sourceLineNo">081</span> public static String getStringValue( ColumnSlice&lt;String, String&gt; columnSlice, ColumnNames columnName )<a name="line.81"></a>
<span class="sourceLineNo">082</span> {<a name="line.82"></a>
<span class="sourceLineNo">083</span> return getStringValue( columnSlice, columnName.toString() );<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> public static String getStringValue( ColumnSlice&lt;String, String&gt; columnSlice, String columnName )<a name="line.86"></a>
<span class="sourceLineNo">087</span> {<a name="line.87"></a>
<span class="sourceLineNo">088</span> if ( StringUtils.isEmpty( columnName ) )<a name="line.88"></a>
<span class="sourceLineNo">089</span> {<a name="line.89"></a>
<span class="sourceLineNo">090</span> return null;<a name="line.90"></a>
<span class="sourceLineNo">091</span> }<a name="line.91"></a>
<span class="sourceLineNo">092</span><a name="line.92"></a>
<span class="sourceLineNo">093</span> HColumn&lt;String, String&gt; hColumn = columnSlice.getColumnByName( columnName );<a name="line.93"></a>
<span class="sourceLineNo">094</span> return hColumn == null ? null : hColumn.getValue();<a name="line.94"></a>
<span class="sourceLineNo">095</span> }<a name="line.95"></a>
<span class="sourceLineNo">096</span><a name="line.96"></a>
<span class="sourceLineNo">097</span> public static Long getLongValue( ColumnSlice&lt;String, Long&gt; columnSlice, String columnName )<a name="line.97"></a>
<span class="sourceLineNo">098</span> {<a name="line.98"></a>
<span class="sourceLineNo">099</span> if ( StringUtils.isEmpty( columnName ) )<a name="line.99"></a>
<span class="sourceLineNo">100</span> {<a name="line.100"></a>
<span class="sourceLineNo">101</span> return null;<a name="line.101"></a>
<span class="sourceLineNo">102</span> }<a name="line.102"></a>
<span class="sourceLineNo">103</span><a name="line.103"></a>
<span class="sourceLineNo">104</span> HColumn&lt;String, Long&gt; hColumn = columnSlice.getColumnByName( columnName );<a name="line.104"></a>
<span class="sourceLineNo">105</span> return hColumn == null ? null : hColumn.getValue();<a name="line.105"></a>
<span class="sourceLineNo">106</span> }<a name="line.106"></a>
<span class="sourceLineNo">107</span><a name="line.107"></a>
<span class="sourceLineNo">108</span> public static &lt;T&gt; String getAsStringValue( ColumnSlice&lt;String, T&gt; columnSlice, String columnName )<a name="line.108"></a>
<span class="sourceLineNo">109</span> {<a name="line.109"></a>
<span class="sourceLineNo">110</span> StringSerializer ss = StringSerializer.get();<a name="line.110"></a>
<span class="sourceLineNo">111</span> if ( StringUtils.isEmpty( columnName ) )<a name="line.111"></a>
<span class="sourceLineNo">112</span> {<a name="line.112"></a>
<span class="sourceLineNo">113</span> return null;<a name="line.113"></a>
<span class="sourceLineNo">114</span> }<a name="line.114"></a>
<span class="sourceLineNo">115</span><a name="line.115"></a>
<span class="sourceLineNo">116</span> HColumn&lt;String, T&gt; hColumn = columnSlice.getColumnByName( columnName );<a name="line.116"></a>
<span class="sourceLineNo">117</span> return hColumn == null ? null : ss.fromByteBuffer( hColumn.getValueBytes() );<a name="line.117"></a>
<span class="sourceLineNo">118</span> }<a name="line.118"></a>
<span class="sourceLineNo">119</span><a name="line.119"></a>
<span class="sourceLineNo">120</span> public static Long getAsLongValue( ColumnSlice&lt;String, String&gt; columnSlice, String columnName )<a name="line.120"></a>
<span class="sourceLineNo">121</span> {<a name="line.121"></a>
<span class="sourceLineNo">122</span> LongSerializer ls = LongSerializer.get();<a name="line.122"></a>
<span class="sourceLineNo">123</span> if ( StringUtils.isEmpty( columnName ) )<a name="line.123"></a>
<span class="sourceLineNo">124</span> {<a name="line.124"></a>
<span class="sourceLineNo">125</span> return null;<a name="line.125"></a>
<span class="sourceLineNo">126</span> }<a name="line.126"></a>
<span class="sourceLineNo">127</span><a name="line.127"></a>
<span class="sourceLineNo">128</span> HColumn&lt;String, String&gt; hColumn = columnSlice.getColumnByName( columnName );<a name="line.128"></a>
<span class="sourceLineNo">129</span> return hColumn == null ? null : ls.fromByteBuffer( hColumn.getValueBytes() );<a name="line.129"></a>
<span class="sourceLineNo">130</span> }<a name="line.130"></a>
<span class="sourceLineNo">131</span><a name="line.131"></a>
<span class="sourceLineNo">132</span> public static void addInsertion( Mutator&lt;String&gt; mutator, String key, String columnFamily, String columnName,<a name="line.132"></a>
<span class="sourceLineNo">133</span> String value )<a name="line.133"></a>
<span class="sourceLineNo">134</span> {<a name="line.134"></a>
<span class="sourceLineNo">135</span> if ( value != null )<a name="line.135"></a>
<span class="sourceLineNo">136</span> {<a name="line.136"></a>
<span class="sourceLineNo">137</span> mutator.addInsertion( key, columnFamily, column( columnName, value ) );<a name="line.137"></a>
<span class="sourceLineNo">138</span> }<a name="line.138"></a>
<span class="sourceLineNo">139</span> }<a name="line.139"></a>
<span class="sourceLineNo">140</span><a name="line.140"></a>
<span class="sourceLineNo">141</span> /**<a name="line.141"></a>
<span class="sourceLineNo">142</span> * null check on the value to prevent {@link java.lang.IllegalArgumentException}<a name="line.142"></a>
<span class="sourceLineNo">143</span> * @param updater<a name="line.143"></a>
<span class="sourceLineNo">144</span> * @param columnName<a name="line.144"></a>
<span class="sourceLineNo">145</span> * @param value<a name="line.145"></a>
<span class="sourceLineNo">146</span> */<a name="line.146"></a>
<span class="sourceLineNo">147</span> public static void addUpdateStringValue(ColumnFamilyUpdater&lt;String,String&gt; updater, String columnName, String value )<a name="line.147"></a>
<span class="sourceLineNo">148</span> {<a name="line.148"></a>
<span class="sourceLineNo">149</span> if (value == null)<a name="line.149"></a>
<span class="sourceLineNo">150</span> {<a name="line.150"></a>
<span class="sourceLineNo">151</span> return;<a name="line.151"></a>
<span class="sourceLineNo">152</span> }<a name="line.152"></a>
<span class="sourceLineNo">153</span> updater.setString( columnName, value );<a name="line.153"></a>
<span class="sourceLineNo">154</span><a name="line.154"></a>
<span class="sourceLineNo">155</span> }<a name="line.155"></a>
<span class="sourceLineNo">156</span><a name="line.156"></a>
<span class="sourceLineNo">157</span> private CassandraUtils()<a name="line.157"></a>
<span class="sourceLineNo">158</span> {<a name="line.158"></a>
<span class="sourceLineNo">159</span> // no-op<a name="line.159"></a>
<span class="sourceLineNo">160</span> }<a name="line.160"></a>
<span class="sourceLineNo">161</span><a name="line.161"></a>
<span class="sourceLineNo">162</span>}<a name="line.162"></a>
</pre>
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