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All Rights Reserved. + </body> +</html> \ No newline at end of file http://git-wip-us.apache.org/repos/asf/incubator-omid-site/blob/78ce5362/xref/org/apache/omid/examples/BasicExample.html ---------------------------------------------------------------------- diff --git a/xref/org/apache/omid/examples/BasicExample.html b/xref/org/apache/omid/examples/BasicExample.html new file mode 100644 index 0000000..d00eaba --- /dev/null +++ b/xref/org/apache/omid/examples/BasicExample.html @@ -0,0 +1,126 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";> +<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en"> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8" /> +<title>BasicExample xref</title> +<link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" /> +</head> +<body> +<div id="overview"><a href="../../../../../../target/site/apidocs/org/apache/omid/examples/BasicExample.html">View Javadoc</a></div><pre> + +<a class="jxr_linenumber" name="1" href="#1">1</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="2" href="#2">2</a> <em class="jxr_javadoccomment"> * Licensed to the Apache Software Foundation (ASF) under one</em> +<a class="jxr_linenumber" name="3" href="#3">3</a> <em class="jxr_javadoccomment"> * or more contributor license agreements. See the NOTICE file</em> +<a class="jxr_linenumber" name="4" href="#4">4</a> <em class="jxr_javadoccomment"> * distributed with this work for additional information</em> +<a class="jxr_linenumber" name="5" href="#5">5</a> <em class="jxr_javadoccomment"> * regarding copyright ownership. The ASF licenses this file</em> +<a class="jxr_linenumber" name="6" href="#6">6</a> <em class="jxr_javadoccomment"> * to you under the Apache License, Version 2.0 (the</em> +<a class="jxr_linenumber" name="7" href="#7">7</a> <em class="jxr_javadoccomment"> * "License"); you may not use this file except in compliance</em> +<a class="jxr_linenumber" name="8" href="#8">8</a> <em class="jxr_javadoccomment"> * with the License. You may obtain a copy of the License at</em> +<a class="jxr_linenumber" name="9" href="#9">9</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="10" href="#10">10</a> <em class="jxr_javadoccomment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0"; target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em> +<a class="jxr_linenumber" name="11" href="#11">11</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="12" href="#12">12</a> <em class="jxr_javadoccomment"> * Unless required by applicable law or agreed to in writing, software</em> +<a class="jxr_linenumber" name="13" href="#13">13</a> <em class="jxr_javadoccomment"> * distributed under the License is distributed on an "AS IS" BASIS,</em> +<a class="jxr_linenumber" name="14" href="#14">14</a> <em class="jxr_javadoccomment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em> +<a class="jxr_linenumber" name="15" href="#15">15</a> <em class="jxr_javadoccomment"> * See the License for the specific language governing permissions and</em> +<a class="jxr_linenumber" name="16" href="#16">16</a> <em class="jxr_javadoccomment"> * limitations under the License.</em> +<a class="jxr_linenumber" name="17" href="#17">17</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="18" href="#18">18</a> <strong class="jxr_keyword">package</strong> org.apache.omid.examples; +<a class="jxr_linenumber" name="19" href="#19">19</a> +<a class="jxr_linenumber" name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.HBaseTransactionManager; +<a class="jxr_linenumber" name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.TTable; +<a class="jxr_linenumber" name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.Transaction; +<a class="jxr_linenumber" name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.TransactionManager; +<a class="jxr_linenumber" name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> org.apache.commons.lang.StringUtils; +<a class="jxr_linenumber" name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Put; +<a class="jxr_linenumber" name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.Bytes; +<a class="jxr_linenumber" name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> org.slf4j.Logger; +<a class="jxr_linenumber" name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> org.slf4j.LoggerFactory; +<a class="jxr_linenumber" name="29" href="#29">29</a> +<a class="jxr_linenumber" name="30" href="#30">30</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="31" href="#31">31</a> <em class="jxr_javadoccomment"> * ****************************************************************************************************</em> +<a class="jxr_linenumber" name="32" href="#32">32</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * Example code which demonstrates an atomic write into two different rows in HBase</em> +<a class="jxr_linenumber" name="34" href="#34">34</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * ****************************************************************************************************</em> +<a class="jxr_linenumber" name="36" href="#36">36</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * After building the package with 'mvn clean package' find the resulting examples-<version>-bin.tar.gz file in the</em> +<a class="jxr_linenumber" name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * 'examples/target' folder. Copy it to the target host and expand with 'tar -zxvf examples-<version>-bin.tar.gz'.</em> +<a class="jxr_linenumber" name="39" href="#39">39</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * Make sure that 'hbase-site.xml' and 'core-site.xml' are either in classpath (see run.sh) or explicitly referenced in</em> +<a class="jxr_linenumber" name="41" href="#41">41</a> <em class="jxr_javadoccomment"> * configuration file. If a secure HBase deployment is needed, make sure to specify the principal (user) and keytab file.</em> +<a class="jxr_linenumber" name="42" href="#42">42</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="43" href="#43">43</a> <em class="jxr_javadoccomment"> * The example requires a user table to perform transactional read/write operations. A table is already specified in</em> +<a class="jxr_linenumber" name="44" href="#44">44</a> <em class="jxr_javadoccomment"> * the default configuration, and can be created with the following command using the 'hbase shell':</em> +<a class="jxr_linenumber" name="45" href="#45">45</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="46" href="#46">46</a> <em class="jxr_javadoccomment"> * <pre></em> +<a class="jxr_linenumber" name="47" href="#47">47</a> <em class="jxr_javadoccomment"> * create 'MY_TX_TABLE', {NAME => 'MY_CF', VERSIONS => '2147483647', TTL => '2147483647'}</em> +<a class="jxr_linenumber" name="48" href="#48">48</a> <em class="jxr_javadoccomment"> * </pre></em> +<a class="jxr_linenumber" name="49" href="#49">49</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="50" href="#50">50</a> <em class="jxr_javadoccomment"> * Make sure that the principal/user has RW permissions for the given table using also the 'hbase shell':</em> +<a class="jxr_linenumber" name="51" href="#51">51</a> <em class="jxr_javadoccomment"> * <pre></em> +<a class="jxr_linenumber" name="52" href="#52">52</a> <em class="jxr_javadoccomment"> * grant '<principal/user>', 'RW', 'MY_TX_TABLE'</em> +<a class="jxr_linenumber" name="53" href="#53">53</a> <em class="jxr_javadoccomment"> * </pre></em> +<a class="jxr_linenumber" name="54" href="#54">54</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="55" href="#55">55</a> <em class="jxr_javadoccomment"> * Alternatively, a table with a column family already created can be used by specifying the table name and column</em> +<a class="jxr_linenumber" name="56" href="#56">56</a> <em class="jxr_javadoccomment"> * family identifiers using the command line arguments (see details also in 'run.sh') If a table namespace is required,</em> +<a class="jxr_linenumber" name="57" href="#57">57</a> <em class="jxr_javadoccomment"> * specify it like this: 'namespace:table_name'</em> +<a class="jxr_linenumber" name="58" href="#58">58</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="59" href="#59">59</a> <em class="jxr_javadoccomment"> * Finally, run the example using the 'run.sh' script without arguments or specifying the necessary configuration</em> +<a class="jxr_linenumber" name="60" href="#60">60</a> <em class="jxr_javadoccomment"> * parameters.</em> +<a class="jxr_linenumber" name="61" href="#61">61</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="62" href="#62">62</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/omid/examples/BasicExample.html">BasicExample</a> { +<a class="jxr_linenumber" name="63" href="#63">63</a> +<a class="jxr_linenumber" name="64" href="#64">64</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Logger LOG = LoggerFactory.getLogger(BasicExample.<strong class="jxr_keyword">class</strong>); +<a class="jxr_linenumber" name="65" href="#65">65</a> +<a class="jxr_linenumber" name="66" href="#66">66</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> main(String[] args) <strong class="jxr_keyword">throws</strong> Exception { +<a class="jxr_linenumber" name="67" href="#67">67</a> +<a class="jxr_linenumber" name="68" href="#68">68</a> LOG.info(<span class="jxr_string">"Parsing command line arguments"</span>); +<a class="jxr_linenumber" name="69" href="#69">69</a> String userTableName = <span class="jxr_string">"MY_TX_TABLE"</span>; +<a class="jxr_linenumber" name="70" href="#70">70</a> <strong class="jxr_keyword">if</strong> (args != <strong class="jxr_keyword">null</strong> && args.length > 0 && StringUtils.isNotEmpty(args[0])) { +<a class="jxr_linenumber" name="71" href="#71">71</a> userTableName = args[0]; +<a class="jxr_linenumber" name="72" href="#72">72</a> } +<a class="jxr_linenumber" name="73" href="#73">73</a> byte[] family = Bytes.toBytes(<span class="jxr_string">"MY_CF"</span>); +<a class="jxr_linenumber" name="74" href="#74">74</a> <strong class="jxr_keyword">if</strong> (args != <strong class="jxr_keyword">null</strong> && args.length > 1 && StringUtils.isNotEmpty(args[1])) { +<a class="jxr_linenumber" name="75" href="#75">75</a> family = Bytes.toBytes(args[1]); +<a class="jxr_linenumber" name="76" href="#76">76</a> } +<a class="jxr_linenumber" name="77" href="#77">77</a> LOG.info(<span class="jxr_string">"Table '{}', column family '{}'"</span>, userTableName, Bytes.toString(family)); +<a class="jxr_linenumber" name="78" href="#78">78</a> +<a class="jxr_linenumber" name="79" href="#79">79</a> byte[] exampleRow1 = Bytes.toBytes(<span class="jxr_string">"EXAMPLE_ROW1"</span>); +<a class="jxr_linenumber" name="80" href="#80">80</a> byte[] exampleRow2 = Bytes.toBytes(<span class="jxr_string">"EXAMPLE_ROW2"</span>); +<a class="jxr_linenumber" name="81" href="#81">81</a> byte[] qualifier = Bytes.toBytes(<span class="jxr_string">"MY_Q"</span>); +<a class="jxr_linenumber" name="82" href="#82">82</a> byte[] dataValue1 = Bytes.toBytes(<span class="jxr_string">"val1"</span>); +<a class="jxr_linenumber" name="83" href="#83">83</a> byte[] dataValue2 = Bytes.toBytes(<span class="jxr_string">"val2"</span>); +<a class="jxr_linenumber" name="84" href="#84">84</a> +<a class="jxr_linenumber" name="85" href="#85">85</a> LOG.info(<span class="jxr_string">"Creating access to Omid Transaction Manager & Transactional Table '{}'"</span>, userTableName); +<a class="jxr_linenumber" name="86" href="#86">86</a> <strong class="jxr_keyword">try</strong> (TransactionManager tm = HBaseTransactionManager.newInstance(); +<a class="jxr_linenumber" name="87" href="#87">87</a> <a href="../../../../org/apache/omid/transaction/TTable.html">TTable</a> txTable = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/transaction/TTable.html">TTable</a>(userTableName)) +<a class="jxr_linenumber" name="88" href="#88">88</a> { +<a class="jxr_linenumber" name="89" href="#89">89</a> <a href="../../../../org/apache/omid/transaction/Transaction.html">Transaction</a> tx = tm.begin(); +<a class="jxr_linenumber" name="90" href="#90">90</a> LOG.info(<span class="jxr_string">"Transaction {} STARTED"</span>, tx); +<a class="jxr_linenumber" name="91" href="#91">91</a> +<a class="jxr_linenumber" name="92" href="#92">92</a> Put row1 = <strong class="jxr_keyword">new</strong> Put(exampleRow1); +<a class="jxr_linenumber" name="93" href="#93">93</a> row1.add(family, qualifier, dataValue1); +<a class="jxr_linenumber" name="94" href="#94">94</a> txTable.put(tx, row1); +<a class="jxr_linenumber" name="95" href="#95">95</a> LOG.info(<span class="jxr_string">"Transaction {} trying to write a new value in [TABLE:ROW/CF/Q] => {}:{}/{}/{} = {} "</span>, +<a class="jxr_linenumber" name="96" href="#96">96</a> tx, userTableName, Bytes.toString(exampleRow1), Bytes.toString(family), +<a class="jxr_linenumber" name="97" href="#97">97</a> Bytes.toString(qualifier), Bytes.toString(dataValue1)); +<a class="jxr_linenumber" name="98" href="#98">98</a> +<a class="jxr_linenumber" name="99" href="#99">99</a> Put row2 = <strong class="jxr_keyword">new</strong> Put(exampleRow2); +<a class="jxr_linenumber" name="100" href="#100">100</a> row2.add(family, qualifier, dataValue2); +<a class="jxr_linenumber" name="101" href="#101">101</a> txTable.put(tx, row2); +<a class="jxr_linenumber" name="102" href="#102">102</a> LOG.info(<span class="jxr_string">"Transaction {} trying to write a new value in [TABLE:ROW/CF/Q] => {}:{}/{}/{} = {} "</span>, +<a class="jxr_linenumber" name="103" href="#103">103</a> tx, userTableName, Bytes.toString(exampleRow2), Bytes.toString(family), +<a class="jxr_linenumber" name="104" href="#104">104</a> Bytes.toString(qualifier), Bytes.toString(dataValue2)); +<a class="jxr_linenumber" name="105" href="#105">105</a> +<a class="jxr_linenumber" name="106" href="#106">106</a> tm.commit(tx); +<a class="jxr_linenumber" name="107" href="#107">107</a> LOG.info(<span class="jxr_string">"Transaction {} COMMITTED"</span>, tx); +<a class="jxr_linenumber" name="108" href="#108">108</a> } +<a class="jxr_linenumber" name="109" href="#109">109</a> +<a class="jxr_linenumber" name="110" href="#110">110</a> } +<a class="jxr_linenumber" name="111" href="#111">111</a> +<a class="jxr_linenumber" name="112" href="#112">112</a> } +</pre> +<hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/";>Maven</a></div></body> +</html> + http://git-wip-us.apache.org/repos/asf/incubator-omid-site/blob/78ce5362/xref/org/apache/omid/examples/ConfigurationExample.html ---------------------------------------------------------------------- diff --git a/xref/org/apache/omid/examples/ConfigurationExample.html b/xref/org/apache/omid/examples/ConfigurationExample.html new file mode 100644 index 0000000..5b856e4 --- /dev/null +++ b/xref/org/apache/omid/examples/ConfigurationExample.html @@ -0,0 +1,145 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";> +<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en"> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8" /> +<title>ConfigurationExample xref</title> +<link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" /> +</head> +<body> +<div id="overview"><a href="../../../../../../target/site/apidocs/org/apache/omid/examples/ConfigurationExample.html">View Javadoc</a></div><pre> + +<a class="jxr_linenumber" name="1" href="#1">1</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="2" href="#2">2</a> <em class="jxr_javadoccomment"> * Licensed to the Apache Software Foundation (ASF) under one</em> +<a class="jxr_linenumber" name="3" href="#3">3</a> <em class="jxr_javadoccomment"> * or more contributor license agreements. See the NOTICE file</em> +<a class="jxr_linenumber" name="4" href="#4">4</a> <em class="jxr_javadoccomment"> * distributed with this work for additional information</em> +<a class="jxr_linenumber" name="5" href="#5">5</a> <em class="jxr_javadoccomment"> * regarding copyright ownership. The ASF licenses this file</em> +<a class="jxr_linenumber" name="6" href="#6">6</a> <em class="jxr_javadoccomment"> * to you under the Apache License, Version 2.0 (the</em> +<a class="jxr_linenumber" name="7" href="#7">7</a> <em class="jxr_javadoccomment"> * "License"); you may not use this file except in compliance</em> +<a class="jxr_linenumber" name="8" href="#8">8</a> <em class="jxr_javadoccomment"> * with the License. You may obtain a copy of the License at</em> +<a class="jxr_linenumber" name="9" href="#9">9</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="10" href="#10">10</a> <em class="jxr_javadoccomment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0"; target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em> +<a class="jxr_linenumber" name="11" href="#11">11</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="12" href="#12">12</a> <em class="jxr_javadoccomment"> * Unless required by applicable law or agreed to in writing, software</em> +<a class="jxr_linenumber" name="13" href="#13">13</a> <em class="jxr_javadoccomment"> * distributed under the License is distributed on an "AS IS" BASIS,</em> +<a class="jxr_linenumber" name="14" href="#14">14</a> <em class="jxr_javadoccomment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em> +<a class="jxr_linenumber" name="15" href="#15">15</a> <em class="jxr_javadoccomment"> * See the License for the specific language governing permissions and</em> +<a class="jxr_linenumber" name="16" href="#16">16</a> <em class="jxr_javadoccomment"> * limitations under the License.</em> +<a class="jxr_linenumber" name="17" href="#17">17</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="18" href="#18">18</a> <strong class="jxr_keyword">package</strong> org.apache.omid.examples; +<a class="jxr_linenumber" name="19" href="#19">19</a> +<a class="jxr_linenumber" name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.HBaseOmidClientConfiguration; +<a class="jxr_linenumber" name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.HBaseTransactionManager; +<a class="jxr_linenumber" name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.RollbackException; +<a class="jxr_linenumber" name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.TTable; +<a class="jxr_linenumber" name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.Transaction; +<a class="jxr_linenumber" name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.TransactionException; +<a class="jxr_linenumber" name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.TransactionManager; +<a class="jxr_linenumber" name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> org.apache.commons.lang.StringUtils; +<a class="jxr_linenumber" name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Put; +<a class="jxr_linenumber" name="29" href="#29">29</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.Bytes; +<a class="jxr_linenumber" name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> org.slf4j.Logger; +<a class="jxr_linenumber" name="31" href="#31">31</a> <strong class="jxr_keyword">import</strong> org.slf4j.LoggerFactory; +<a class="jxr_linenumber" name="32" href="#32">32</a> +<a class="jxr_linenumber" name="33" href="#33">33</a> <strong class="jxr_keyword">import</strong> java.io.IOException; +<a class="jxr_linenumber" name="34" href="#34">34</a> +<a class="jxr_linenumber" name="35" href="#35">35</a> <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.apache.omid.tso.client.OmidClientConfiguration.ConnType.DIRECT; +<a class="jxr_linenumber" name="36" href="#36">36</a> +<a class="jxr_linenumber" name="37" href="#37">37</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * ****************************************************************************************************************</em> +<a class="jxr_linenumber" name="39" href="#39">39</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * This example code demonstrates different ways to configure the Omid client settings for HBase</em> +<a class="jxr_linenumber" name="41" href="#41">41</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="42" href="#42">42</a> <em class="jxr_javadoccomment"> * ****************************************************************************************************************</em> +<a class="jxr_linenumber" name="43" href="#43">43</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="44" href="#44">44</a> <em class="jxr_javadoccomment"> * Please @see{BasicExample} first on how to use with all default settings</em> +<a class="jxr_linenumber" name="45" href="#45">45</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="46" href="#46">46</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="47" href="#47">47</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/omid/examples/ConfigurationExample.html">ConfigurationExample</a> { +<a class="jxr_linenumber" name="48" href="#48">48</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Logger LOG = LoggerFactory.getLogger(ConfigurationExample.<strong class="jxr_keyword">class</strong>); +<a class="jxr_linenumber" name="49" href="#49">49</a> +<a class="jxr_linenumber" name="50" href="#50">50</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> main(String[] args) <strong class="jxr_keyword">throws</strong> Exception { +<a class="jxr_linenumber" name="51" href="#51">51</a> +<a class="jxr_linenumber" name="52" href="#52">52</a> LOG.info(<span class="jxr_string">"Parsing command line arguments"</span>); +<a class="jxr_linenumber" name="53" href="#53">53</a> String userTableName = <span class="jxr_string">"MY_TX_TABLE"</span>; +<a class="jxr_linenumber" name="54" href="#54">54</a> <strong class="jxr_keyword">if</strong> (args != <strong class="jxr_keyword">null</strong> && args.length > 0 && StringUtils.isNotEmpty(args[0])) { +<a class="jxr_linenumber" name="55" href="#55">55</a> userTableName = args[0]; +<a class="jxr_linenumber" name="56" href="#56">56</a> } +<a class="jxr_linenumber" name="57" href="#57">57</a> byte[] family = Bytes.toBytes(<span class="jxr_string">"MY_CF"</span>); +<a class="jxr_linenumber" name="58" href="#58">58</a> <strong class="jxr_keyword">if</strong> (args != <strong class="jxr_keyword">null</strong> && args.length > 1 && StringUtils.isNotEmpty(args[1])) { +<a class="jxr_linenumber" name="59" href="#59">59</a> family = Bytes.toBytes(args[1]); +<a class="jxr_linenumber" name="60" href="#60">60</a> } +<a class="jxr_linenumber" name="61" href="#61">61</a> LOG.info(<span class="jxr_string">"Table '{}', column family '{}'"</span>, userTableName, Bytes.toString(family)); +<a class="jxr_linenumber" name="62" href="#62">62</a> +<a class="jxr_linenumber" name="63" href="#63">63</a> <a href="../../../../org/apache/omid/examples/ConfigurationExample.html">ConfigurationExample</a> example = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/examples/ConfigurationExample.html">ConfigurationExample</a>(); +<a class="jxr_linenumber" name="64" href="#64">64</a> +<a class="jxr_linenumber" name="65" href="#65">65</a> <em class="jxr_comment">// -----------------------------------------------------------------------------------------------------------</em> +<a class="jxr_linenumber" name="66" href="#66">66</a> <em class="jxr_comment">// Omid client settings configuration through the 'hbase-omid-client-config.yml' configuration file</em> +<a class="jxr_linenumber" name="67" href="#67">67</a> <em class="jxr_comment">// -----------------------------------------------------------------------------------------------------------</em> +<a class="jxr_linenumber" name="68" href="#68">68</a> <em class="jxr_comment">// The HBaseOmidClientConfiguration loads defaults from 'default-hbase-omid-client-config.yml'</em> +<a class="jxr_linenumber" name="69" href="#69">69</a> <em class="jxr_comment">// and then also applies settings from 'hbase-omid-client-config.yml' if it's available in the classpath.</em> +<a class="jxr_linenumber" name="70" href="#70">70</a> <em class="jxr_comment">// In the code snippet below, the user settings are loaded from the 'hbase-omid-client-config.yml' file in</em> +<a class="jxr_linenumber" name="71" href="#71">71</a> <em class="jxr_comment">// the /conf directory that is included in the example classpath (See run.sh.) You can modify the Omid client</em> +<a class="jxr_linenumber" name="72" href="#72">72</a> <em class="jxr_comment">// settings there or you can place your own 'hbase-omid-client-config.yml' file with all your custom settings</em> +<a class="jxr_linenumber" name="73" href="#73">73</a> <em class="jxr_comment">// in the application classpath.</em> +<a class="jxr_linenumber" name="74" href="#74">74</a> +<a class="jxr_linenumber" name="75" href="#75">75</a> example.doWork(userTableName, family, <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/transaction/HBaseOmidClientConfiguration.html">HBaseOmidClientConfiguration</a>()); +<a class="jxr_linenumber" name="76" href="#76">76</a> +<a class="jxr_linenumber" name="77" href="#77">77</a> <em class="jxr_comment">// -----------------------------------------------------------------------------------------------------------</em> +<a class="jxr_linenumber" name="78" href="#78">78</a> <em class="jxr_comment">// Omid client settings configuration from application code</em> +<a class="jxr_linenumber" name="79" href="#79">79</a> <em class="jxr_comment">// -----------------------------------------------------------------------------------------------------------</em> +<a class="jxr_linenumber" name="80" href="#80">80</a> <em class="jxr_comment">// You can also configure Omid programmatically from your code. This is useful for example in unit tests.</em> +<a class="jxr_linenumber" name="81" href="#81">81</a> <em class="jxr_comment">// The HBaseOmidClientConfiguration still loads defaults from 'default-hbase-omid-client-config.yml' first,</em> +<a class="jxr_linenumber" name="82" href="#82">82</a> <em class="jxr_comment">// and then applies settings from 'hbase-omid-client-config.yml' if it's available and then use explicit</em> +<a class="jxr_linenumber" name="83" href="#83">83</a> <em class="jxr_comment">// settings in the code. An example of an explicit Omid client configuration in code is shown below.</em> +<a class="jxr_linenumber" name="84" href="#84">84</a> +<a class="jxr_linenumber" name="85" href="#85">85</a> <a href="../../../../org/apache/omid/transaction/HBaseOmidClientConfiguration.html">HBaseOmidClientConfiguration</a> omidClientConfiguration = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/transaction/HBaseOmidClientConfiguration.html">HBaseOmidClientConfiguration</a>(); +<a class="jxr_linenumber" name="86" href="#86">86</a> omidClientConfiguration.setConnectionType(DIRECT); +<a class="jxr_linenumber" name="87" href="#87">87</a> omidClientConfiguration.setConnectionString(<span class="jxr_string">"localhost:54758"</span>); +<a class="jxr_linenumber" name="88" href="#88">88</a> omidClientConfiguration.setRetryDelayInMs(3000); +<a class="jxr_linenumber" name="89" href="#89">89</a> +<a class="jxr_linenumber" name="90" href="#90">90</a> example.doWork(userTableName, family, omidClientConfiguration); +<a class="jxr_linenumber" name="91" href="#91">91</a> } +<a class="jxr_linenumber" name="92" href="#92">92</a> +<a class="jxr_linenumber" name="93" href="#93">93</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> doWork(String userTableName, byte[] family, <a href="../../../../org/apache/omid/transaction/HBaseOmidClientConfiguration.html">HBaseOmidClientConfiguration</a> configuration) +<a class="jxr_linenumber" name="94" href="#94">94</a> <strong class="jxr_keyword">throws</strong> IOException, TransactionException, RollbackException, InterruptedException { +<a class="jxr_linenumber" name="95" href="#95">95</a> +<a class="jxr_linenumber" name="96" href="#96">96</a> byte[] exampleRow1 = Bytes.toBytes(<span class="jxr_string">"EXAMPLE_ROW1"</span>); +<a class="jxr_linenumber" name="97" href="#97">97</a> byte[] exampleRow2 = Bytes.toBytes(<span class="jxr_string">"EXAMPLE_ROW2"</span>); +<a class="jxr_linenumber" name="98" href="#98">98</a> byte[] qualifier = Bytes.toBytes(<span class="jxr_string">"MY_Q"</span>); +<a class="jxr_linenumber" name="99" href="#99">99</a> byte[] dataValue1 = Bytes.toBytes(<span class="jxr_string">"val1"</span>); +<a class="jxr_linenumber" name="100" href="#100">100</a> byte[] dataValue2 = Bytes.toBytes(<span class="jxr_string">"val2"</span>); +<a class="jxr_linenumber" name="101" href="#101">101</a> +<a class="jxr_linenumber" name="102" href="#102">102</a> LOG.info(<span class="jxr_string">"Creating access to Omid Transaction Manager & Transactional Table '{}'"</span>, userTableName); +<a class="jxr_linenumber" name="103" href="#103">103</a> <strong class="jxr_keyword">try</strong> (TransactionManager tm = HBaseTransactionManager.newInstance(configuration); +<a class="jxr_linenumber" name="104" href="#104">104</a> <a href="../../../../org/apache/omid/transaction/TTable.html">TTable</a> txTable = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/transaction/TTable.html">TTable</a>(userTableName)) +<a class="jxr_linenumber" name="105" href="#105">105</a> { +<a class="jxr_linenumber" name="106" href="#106">106</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i < 100; i++) { +<a class="jxr_linenumber" name="107" href="#107">107</a> <a href="../../../../org/apache/omid/transaction/Transaction.html">Transaction</a> tx = tm.begin(); +<a class="jxr_linenumber" name="108" href="#108">108</a> LOG.info(<span class="jxr_string">"Transaction #{} {} STARTED"</span>, i, tx); +<a class="jxr_linenumber" name="109" href="#109">109</a> +<a class="jxr_linenumber" name="110" href="#110">110</a> Put row1 = <strong class="jxr_keyword">new</strong> Put(exampleRow1); +<a class="jxr_linenumber" name="111" href="#111">111</a> row1.add(family, qualifier, dataValue1); +<a class="jxr_linenumber" name="112" href="#112">112</a> txTable.put(tx, row1); +<a class="jxr_linenumber" name="113" href="#113">113</a> LOG.info(<span class="jxr_string">"Transaction {} trying to write a new value in [TABLE:ROW/CF/Q] => {}:{}/{}/{} = {} "</span>, +<a class="jxr_linenumber" name="114" href="#114">114</a> tx, userTableName, Bytes.toString(exampleRow1), Bytes.toString(family), +<a class="jxr_linenumber" name="115" href="#115">115</a> Bytes.toString(qualifier), Bytes.toString(dataValue1)); +<a class="jxr_linenumber" name="116" href="#116">116</a> +<a class="jxr_linenumber" name="117" href="#117">117</a> Put row2 = <strong class="jxr_keyword">new</strong> Put(exampleRow2); +<a class="jxr_linenumber" name="118" href="#118">118</a> row2.add(family, qualifier, dataValue2); +<a class="jxr_linenumber" name="119" href="#119">119</a> txTable.put(tx, row2); +<a class="jxr_linenumber" name="120" href="#120">120</a> LOG.info(<span class="jxr_string">"Transaction {} trying to write a new value in [TABLE:ROW/CF/Q] => {}:{}/{}/{} = {} "</span>, +<a class="jxr_linenumber" name="121" href="#121">121</a> tx, userTableName, Bytes.toString(exampleRow2), Bytes.toString(family), +<a class="jxr_linenumber" name="122" href="#122">122</a> Bytes.toString(qualifier), Bytes.toString(dataValue2)); +<a class="jxr_linenumber" name="123" href="#123">123</a> +<a class="jxr_linenumber" name="124" href="#124">124</a> tm.commit(tx); +<a class="jxr_linenumber" name="125" href="#125">125</a> LOG.info(<span class="jxr_string">"Transaction #{} {} COMMITTED"</span>, i, tx); +<a class="jxr_linenumber" name="126" href="#126">126</a> } +<a class="jxr_linenumber" name="127" href="#127">127</a> } +<a class="jxr_linenumber" name="128" href="#128">128</a> +<a class="jxr_linenumber" name="129" href="#129">129</a> } +<a class="jxr_linenumber" name="130" href="#130">130</a> +<a class="jxr_linenumber" name="131" href="#131">131</a> } +</pre> +<hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/";>Maven</a></div></body> +</html> + http://git-wip-us.apache.org/repos/asf/incubator-omid-site/blob/78ce5362/xref/org/apache/omid/examples/SnapshotIsolationExample.html ---------------------------------------------------------------------- diff --git a/xref/org/apache/omid/examples/SnapshotIsolationExample.html b/xref/org/apache/omid/examples/SnapshotIsolationExample.html new file mode 100644 index 0000000..1ae2833 --- /dev/null +++ b/xref/org/apache/omid/examples/SnapshotIsolationExample.html @@ -0,0 +1,188 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";> +<html xmlns="http://www.w3.org/1999/xhtml"; 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See the NOTICE file</em> +<a class="jxr_linenumber" name="4" href="#4">4</a> <em class="jxr_javadoccomment"> * distributed with this work for additional information</em> +<a class="jxr_linenumber" name="5" href="#5">5</a> <em class="jxr_javadoccomment"> * regarding copyright ownership. The ASF licenses this file</em> +<a class="jxr_linenumber" name="6" href="#6">6</a> <em class="jxr_javadoccomment"> * to you under the Apache License, Version 2.0 (the</em> +<a class="jxr_linenumber" name="7" href="#7">7</a> <em class="jxr_javadoccomment"> * "License"); you may not use this file except in compliance</em> +<a class="jxr_linenumber" name="8" href="#8">8</a> <em class="jxr_javadoccomment"> * with the License. You may obtain a copy of the License at</em> +<a class="jxr_linenumber" name="9" href="#9">9</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="10" href="#10">10</a> <em class="jxr_javadoccomment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0"; target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em> +<a class="jxr_linenumber" name="11" href="#11">11</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="12" href="#12">12</a> <em class="jxr_javadoccomment"> * Unless required by applicable law or agreed to in writing, software</em> +<a class="jxr_linenumber" name="13" href="#13">13</a> <em class="jxr_javadoccomment"> * distributed under the License is distributed on an "AS IS" BASIS,</em> +<a class="jxr_linenumber" name="14" href="#14">14</a> <em class="jxr_javadoccomment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em> +<a class="jxr_linenumber" name="15" href="#15">15</a> <em class="jxr_javadoccomment"> * See the License for the specific language governing permissions and</em> +<a class="jxr_linenumber" name="16" href="#16">16</a> <em class="jxr_javadoccomment"> * limitations under the License.</em> +<a class="jxr_linenumber" name="17" href="#17">17</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="18" href="#18">18</a> <strong class="jxr_keyword">package</strong> org.apache.omid.examples; +<a class="jxr_linenumber" name="19" href="#19">19</a> +<a class="jxr_linenumber" name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.HBaseTransactionManager; +<a class="jxr_linenumber" name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.RollbackException; +<a class="jxr_linenumber" name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.TTable; +<a class="jxr_linenumber" name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.Transaction; +<a class="jxr_linenumber" name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.TransactionManager; +<a class="jxr_linenumber" name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> org.apache.commons.lang.StringUtils; +<a class="jxr_linenumber" name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Get; +<a class="jxr_linenumber" name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Put; +<a class="jxr_linenumber" name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Result; +<a class="jxr_linenumber" name="29" href="#29">29</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.Bytes; +<a class="jxr_linenumber" name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> org.slf4j.Logger; +<a class="jxr_linenumber" name="31" href="#31">31</a> <strong class="jxr_keyword">import</strong> org.slf4j.LoggerFactory; +<a class="jxr_linenumber" name="32" href="#32">32</a> +<a class="jxr_linenumber" name="33" href="#33">33</a> <strong class="jxr_keyword">import</strong> java.util.Arrays; +<a class="jxr_linenumber" name="34" href="#34">34</a> +<a class="jxr_linenumber" name="35" href="#35">35</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * ****************************************************************************************************************</em> +<a class="jxr_linenumber" name="37" href="#37">37</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * Example code which demonstrates the preservation of Snapshot Isolation when writing shared data concurrently</em> +<a class="jxr_linenumber" name="39" href="#39">39</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * ****************************************************************************************************************</em> +<a class="jxr_linenumber" name="41" href="#41">41</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="42" href="#42">42</a> <em class="jxr_javadoccomment"> * Please @see{BasicExample} first</em> +<a class="jxr_linenumber" name="43" href="#43">43</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="44" href="#44">44</a> <em class="jxr_javadoccomment"> * In the code below, two concurrent transactions (Tx1 & Tx2), try to update the same column in HBase. This will result</em> +<a class="jxr_linenumber" name="45" href="#45">45</a> <em class="jxr_javadoccomment"> * in the rollback of Tx2 -the last one trying to commit- due to conflicts in the writeset with the previously</em> +<a class="jxr_linenumber" name="46" href="#46">46</a> <em class="jxr_javadoccomment"> * committed transaction Tx1. Also shows how Tx2 reads the right values from its own snapshot in HBase data.</em> +<a class="jxr_linenumber" name="47" href="#47">47</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="48" href="#48">48</a> <em class="jxr_javadoccomment"> * After building the package with 'mvn clean package' find the resulting examples-<version>-bin.tar.gz file in the</em> +<a class="jxr_linenumber" name="49" href="#49">49</a> <em class="jxr_javadoccomment"> * 'examples/target' folder. Copy it to the target host and expand with 'tar -zxvf examples-<version>-bin.tar.gz'.</em> +<a class="jxr_linenumber" name="50" href="#50">50</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="51" href="#51">51</a> <em class="jxr_javadoccomment"> * Make sure that 'hbase-site.xml' and 'core-site.xml' are either in classpath (see run.sh) or explicitly referenced via</em> +<a class="jxr_linenumber" name="52" href="#52">52</a> <em class="jxr_javadoccomment"> * command line arguments. If a secure HBase deployment is needed, use also command line arguments to specify the</em> +<a class="jxr_linenumber" name="53" href="#53">53</a> <em class="jxr_javadoccomment"> * principal (user) and keytab file.</em> +<a class="jxr_linenumber" name="54" href="#54">54</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="55" href="#55">55</a> <em class="jxr_javadoccomment"> * The example requires a user table to perform transactional read/write operations. A table is already specified in</em> +<a class="jxr_linenumber" name="56" href="#56">56</a> <em class="jxr_javadoccomment"> * the default configuration, and can be created with the following command using the 'hbase shell':</em> +<a class="jxr_linenumber" name="57" href="#57">57</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="58" href="#58">58</a> <em class="jxr_javadoccomment"> * <pre></em> +<a class="jxr_linenumber" name="59" href="#59">59</a> <em class="jxr_javadoccomment"> * create 'MY_TX_TABLE', {NAME => 'MY_CF', VERSIONS => '2147483647', TTL => '2147483647'}</em> +<a class="jxr_linenumber" name="60" href="#60">60</a> <em class="jxr_javadoccomment"> * </pre></em> +<a class="jxr_linenumber" name="61" href="#61">61</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="62" href="#62">62</a> <em class="jxr_javadoccomment"> * Make sure that the principal/user has RW permissions for the given table using also the 'hbase shell':</em> +<a class="jxr_linenumber" name="63" href="#63">63</a> <em class="jxr_javadoccomment"> * <pre></em> +<a class="jxr_linenumber" name="64" href="#64">64</a> <em class="jxr_javadoccomment"> * grant '<principal/user>', 'RW', 'MY_TX_TABLE'</em> +<a class="jxr_linenumber" name="65" href="#65">65</a> <em class="jxr_javadoccomment"> * </pre></em> +<a class="jxr_linenumber" name="66" href="#66">66</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="67" href="#67">67</a> <em class="jxr_javadoccomment"> * Alternatively, a table with a column family already created can be used by specifying the table name and column</em> +<a class="jxr_linenumber" name="68" href="#68">68</a> <em class="jxr_javadoccomment"> * family identifiers using the command line arguments (see details also in 'run.sh') If a table namespace is required,</em> +<a class="jxr_linenumber" name="69" href="#69">69</a> <em class="jxr_javadoccomment"> * specify it like this: 'namespace:table_name'</em> +<a class="jxr_linenumber" name="70" href="#70">70</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="71" href="#71">71</a> <em class="jxr_javadoccomment"> * Finally, run the example using the 'run.sh' script without arguments or specifying the necessary configuration</em> +<a class="jxr_linenumber" name="72" href="#72">72</a> <em class="jxr_javadoccomment"> * parameters if required.</em> +<a class="jxr_linenumber" name="73" href="#73">73</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="74" href="#74">74</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/omid/examples/SnapshotIsolationExample.html">SnapshotIsolationExample</a> { +<a class="jxr_linenumber" name="75" href="#75">75</a> +<a class="jxr_linenumber" name="76" href="#76">76</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Logger LOG = LoggerFactory.getLogger(SnapshotIsolationExample.<strong class="jxr_keyword">class</strong>); +<a class="jxr_linenumber" name="77" href="#77">77</a> +<a class="jxr_linenumber" name="78" href="#78">78</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> main(String[] args) <strong class="jxr_keyword">throws</strong> Exception { +<a class="jxr_linenumber" name="79" href="#79">79</a> +<a class="jxr_linenumber" name="80" href="#80">80</a> LOG.info(<span class="jxr_string">"Parsing the command line arguments"</span>); +<a class="jxr_linenumber" name="81" href="#81">81</a> String userTableName = <span class="jxr_string">"MY_TX_TABLE"</span>; +<a class="jxr_linenumber" name="82" href="#82">82</a> <strong class="jxr_keyword">if</strong> (args != <strong class="jxr_keyword">null</strong> && args.length > 0 && StringUtils.isNotEmpty(args[0])) { +<a class="jxr_linenumber" name="83" href="#83">83</a> userTableName = args[0]; +<a class="jxr_linenumber" name="84" href="#84">84</a> } +<a class="jxr_linenumber" name="85" href="#85">85</a> byte[] family = Bytes.toBytes(<span class="jxr_string">"MY_CF"</span>); +<a class="jxr_linenumber" name="86" href="#86">86</a> <strong class="jxr_keyword">if</strong> (args != <strong class="jxr_keyword">null</strong> && args.length > 1 && StringUtils.isNotEmpty(args[1])) { +<a class="jxr_linenumber" name="87" href="#87">87</a> family = Bytes.toBytes(args[1]); +<a class="jxr_linenumber" name="88" href="#88">88</a> } +<a class="jxr_linenumber" name="89" href="#89">89</a> LOG.info(<span class="jxr_string">"Table '{}', column family '{}'"</span>, userTableName, Bytes.toString(family)); +<a class="jxr_linenumber" name="90" href="#90">90</a> +<a class="jxr_linenumber" name="91" href="#91">91</a> byte[] exampleRow = Bytes.toBytes(<span class="jxr_string">"EXAMPLE_ROW"</span>); +<a class="jxr_linenumber" name="92" href="#92">92</a> byte[] qualifier = Bytes.toBytes(<span class="jxr_string">"MY_Q"</span>); +<a class="jxr_linenumber" name="93" href="#93">93</a> byte[] initialData = Bytes.toBytes(<span class="jxr_string">"initialVal"</span>); +<a class="jxr_linenumber" name="94" href="#94">94</a> byte[] dataValue1 = Bytes.toBytes(<span class="jxr_string">"val1"</span>); +<a class="jxr_linenumber" name="95" href="#95">95</a> byte[] dataValue2 = Bytes.toBytes(<span class="jxr_string">"val2"</span>); +<a class="jxr_linenumber" name="96" href="#96">96</a> +<a class="jxr_linenumber" name="97" href="#97">97</a> LOG.info(<span class="jxr_string">"--------------------------------------------------------------------------------------------------"</span>); +<a class="jxr_linenumber" name="98" href="#98">98</a> LOG.info(<span class="jxr_string">"NOTE: All Transactions in the Example access column {}:{}/{}/{} [TABLE:ROW/CF/Q]"</span>, +<a class="jxr_linenumber" name="99" href="#99">99</a> userTableName, Bytes.toString(exampleRow), Bytes.toString(family), Bytes.toString(qualifier)); +<a class="jxr_linenumber" name="100" href="#100">100</a> LOG.info(<span class="jxr_string">"--------------------------------------------------------------------------------------------------"</span>); +<a class="jxr_linenumber" name="101" href="#101">101</a> +<a class="jxr_linenumber" name="102" href="#102">102</a> LOG.info(<span class="jxr_string">"Creating access to Omid Transaction Manager & Transactional Table '{}'"</span>, userTableName); +<a class="jxr_linenumber" name="103" href="#103">103</a> <strong class="jxr_keyword">try</strong> (TransactionManager tm = HBaseTransactionManager.newInstance(); +<a class="jxr_linenumber" name="104" href="#104">104</a> <a href="../../../../org/apache/omid/transaction/TTable.html">TTable</a> txTable = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/transaction/TTable.html">TTable</a>(userTableName)) +<a class="jxr_linenumber" name="105" href="#105">105</a> { +<a class="jxr_linenumber" name="106" href="#106">106</a> +<a class="jxr_linenumber" name="107" href="#107">107</a> <em class="jxr_comment">// A transaction Tx0 sets an initial value to a particular column in an specific row</em> +<a class="jxr_linenumber" name="108" href="#108">108</a> <a href="../../../../org/apache/omid/transaction/Transaction.html">Transaction</a> tx0 = tm.begin(); +<a class="jxr_linenumber" name="109" href="#109">109</a> Put initialPut = <strong class="jxr_keyword">new</strong> Put(exampleRow); +<a class="jxr_linenumber" name="110" href="#110">110</a> initialPut.add(family, qualifier, initialData); +<a class="jxr_linenumber" name="111" href="#111">111</a> txTable.put(tx0, initialPut); +<a class="jxr_linenumber" name="112" href="#112">112</a> tm.commit(tx0); +<a class="jxr_linenumber" name="113" href="#113">113</a> LOG.info(<span class="jxr_string">"Initial Transaction {} COMMITTED. Base value written in {}:{}/{}/{} = {}"</span>, +<a class="jxr_linenumber" name="114" href="#114">114</a> tx0, userTableName, Bytes.toString(exampleRow), Bytes.toString(family), +<a class="jxr_linenumber" name="115" href="#115">115</a> Bytes.toString(qualifier), Bytes.toString(initialData)); +<a class="jxr_linenumber" name="116" href="#116">116</a> +<a class="jxr_linenumber" name="117" href="#117">117</a> <em class="jxr_comment">// Transaction Tx1 starts, creates its own snapshot of the current data in HBase and writes new data</em> +<a class="jxr_linenumber" name="118" href="#118">118</a> <a href="../../../../org/apache/omid/transaction/Transaction.html">Transaction</a> tx1 = tm.begin(); +<a class="jxr_linenumber" name="119" href="#119">119</a> LOG.info(<span class="jxr_string">"Transaction {} STARTED"</span>, tx1); +<a class="jxr_linenumber" name="120" href="#120">120</a> Put tx1Put = <strong class="jxr_keyword">new</strong> Put(exampleRow); +<a class="jxr_linenumber" name="121" href="#121">121</a> tx1Put.add(family, qualifier, dataValue1); +<a class="jxr_linenumber" name="122" href="#122">122</a> txTable.put(tx1, tx1Put); +<a class="jxr_linenumber" name="123" href="#123">123</a> LOG.info(<span class="jxr_string">"Transaction {} updates base value in {}:{}/{}/{} = {} in its own Snapshot"</span>, +<a class="jxr_linenumber" name="124" href="#124">124</a> tx1, userTableName, Bytes.toString(exampleRow), Bytes.toString(family), +<a class="jxr_linenumber" name="125" href="#125">125</a> Bytes.toString(qualifier), Bytes.toString(dataValue1)); +<a class="jxr_linenumber" name="126" href="#126">126</a> +<a class="jxr_linenumber" name="127" href="#127">127</a> <em class="jxr_comment">// A concurrent transaction Tx2 starts, creates its own snapshot and reads the column value</em> +<a class="jxr_linenumber" name="128" href="#128">128</a> <a href="../../../../org/apache/omid/transaction/Transaction.html">Transaction</a> tx2 = tm.begin(); +<a class="jxr_linenumber" name="129" href="#129">129</a> LOG.info(<span class="jxr_string">"Concurrent Transaction {} STARTED"</span>, tx2); +<a class="jxr_linenumber" name="130" href="#130">130</a> Get tx2Get = <strong class="jxr_keyword">new</strong> Get(exampleRow); +<a class="jxr_linenumber" name="131" href="#131">131</a> tx2Get.addColumn(family, qualifier); +<a class="jxr_linenumber" name="132" href="#132">132</a> <em class="jxr_comment">// As Tx1 is not yet committed, it should read the value set by Tx0 not the value written by Tx1</em> +<a class="jxr_linenumber" name="133" href="#133">133</a> Result tx2GetResult = txTable.get(tx2, tx2Get); +<a class="jxr_linenumber" name="134" href="#134">134</a> assert Arrays.equals(tx2GetResult.value(), initialData); +<a class="jxr_linenumber" name="135" href="#135">135</a> LOG.info(<span class="jxr_string">"Concurrent Transaction {} should read base value in {}:{}/{}/{} from its Snapshot | Value read = {}"</span>, +<a class="jxr_linenumber" name="136" href="#136">136</a> tx2, userTableName, Bytes.toString(exampleRow), Bytes.toString(family), +<a class="jxr_linenumber" name="137" href="#137">137</a> Bytes.toString(qualifier), Bytes.toString(tx2GetResult.value())); +<a class="jxr_linenumber" name="138" href="#138">138</a> +<a class="jxr_linenumber" name="139" href="#139">139</a> <em class="jxr_comment">// Transaction Tx1 tries to commit and as there're no conflicting changes, persists the new value in HBase</em> +<a class="jxr_linenumber" name="140" href="#140">140</a> tm.commit(tx1); +<a class="jxr_linenumber" name="141" href="#141">141</a> LOG.info(<span class="jxr_string">"Transaction {} COMMITTED. New column value {}:{}/{}/{} = {}"</span>, +<a class="jxr_linenumber" name="142" href="#142">142</a> tx1, userTableName, Bytes.toString(exampleRow), Bytes.toString(family), +<a class="jxr_linenumber" name="143" href="#143">143</a> Bytes.toString(qualifier), Bytes.toString(dataValue1)); +<a class="jxr_linenumber" name="144" href="#144">144</a> +<a class="jxr_linenumber" name="145" href="#145">145</a> <em class="jxr_comment">// Tx2 reading again after Tx1 commit must read data from its snapshot...</em> +<a class="jxr_linenumber" name="146" href="#146">146</a> tx2Get = <strong class="jxr_keyword">new</strong> Get(exampleRow); +<a class="jxr_linenumber" name="147" href="#147">147</a> tx2Get.addColumn(family, qualifier); +<a class="jxr_linenumber" name="148" href="#148">148</a> tx2GetResult = txTable.get(tx2, tx2Get); +<a class="jxr_linenumber" name="149" href="#149">149</a> <em class="jxr_comment">// ...so it must read the initial value written by Tx0</em> +<a class="jxr_linenumber" name="150" href="#150">150</a> LOG.info(<span class="jxr_string">"Concurrent Transaction {} should read again base value in {}:{}/{}/{} from its Snapshot | Value read = {}"</span>, +<a class="jxr_linenumber" name="151" href="#151">151</a> tx2, userTableName, Bytes.toString(exampleRow), Bytes.toString(family), +<a class="jxr_linenumber" name="152" href="#152">152</a> Bytes.toString(qualifier), Bytes.toString(tx2GetResult.value())); +<a class="jxr_linenumber" name="153" href="#153">153</a> +<a class="jxr_linenumber" name="154" href="#154">154</a> <em class="jxr_comment">// Tx2 tries to write the column written by the committed concurrent transaction Tx1...</em> +<a class="jxr_linenumber" name="155" href="#155">155</a> Put tx2Put = <strong class="jxr_keyword">new</strong> Put(exampleRow); +<a class="jxr_linenumber" name="156" href="#156">156</a> tx2Put.add(family, qualifier, dataValue2); +<a class="jxr_linenumber" name="157" href="#157">157</a> txTable.put(tx2, tx2Put); +<a class="jxr_linenumber" name="158" href="#158">158</a> LOG.info(<span class="jxr_string">"Concurrent Transaction {} updates {}:{}/{}/{} = {} in its own Snapshot (Will conflict with {} at commit time)"</span>, +<a class="jxr_linenumber" name="159" href="#159">159</a> tx2, userTableName, Bytes.toString(exampleRow), Bytes.toString(family), +<a class="jxr_linenumber" name="160" href="#160">160</a> Bytes.toString(qualifier), Bytes.toString(dataValue1), tx1); +<a class="jxr_linenumber" name="161" href="#161">161</a> +<a class="jxr_linenumber" name="162" href="#162">162</a> <em class="jxr_comment">// ... and when committing, Tx2 has to abort due to concurrent conflicts with committed transaction Tx1</em> +<a class="jxr_linenumber" name="163" href="#163">163</a> <strong class="jxr_keyword">try</strong> { +<a class="jxr_linenumber" name="164" href="#164">164</a> LOG.info(<span class="jxr_string">"Concurrent Transaction {} TRYING TO COMMIT"</span>, tx2); +<a class="jxr_linenumber" name="165" href="#165">165</a> tm.commit(tx2); +<a class="jxr_linenumber" name="166" href="#166">166</a> } <strong class="jxr_keyword">catch</strong> (RollbackException e) { +<a class="jxr_linenumber" name="167" href="#167">167</a> LOG.error(<span class="jxr_string">"Concurrent Transaction {} ROLLED-BACK!!! : {}"</span>, tx2, e.getMessage()); +<a class="jxr_linenumber" name="168" href="#168">168</a> } +<a class="jxr_linenumber" name="169" href="#169">169</a> +<a class="jxr_linenumber" name="170" href="#170">170</a> } +<a class="jxr_linenumber" name="171" href="#171">171</a> +<a class="jxr_linenumber" name="172" href="#172">172</a> } +<a class="jxr_linenumber" name="173" href="#173">173</a> +<a class="jxr_linenumber" name="174" href="#174">174</a> } +</pre> +<hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/";>Maven</a></div></body> +</html> + http://git-wip-us.apache.org/repos/asf/incubator-omid-site/blob/78ce5362/xref/org/apache/omid/examples/package-frame.html ---------------------------------------------------------------------- diff --git a/xref/org/apache/omid/examples/package-frame.html b/xref/org/apache/omid/examples/package-frame.html new file mode 100644 index 0000000..31fbb74 --- /dev/null +++ b/xref/org/apache/omid/examples/package-frame.html @@ -0,0 +1,30 @@ + +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd"> +<html xml:lang="en" lang="en"> + <head> + <meta http-equiv="content-type" content="text/html; charset=UTF-8" /> + <title>Omid 0.8.1.38-SNAPSHOT Reference Package org.apache.omid.examples</title> + <link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="style" /> + </head> + <body> + + <h3> + <a href="package-summary.html" target="classFrame">org.apache.omid.examples</a> + </h3> + + <h3>Classes</h3> + + <ul> + <li> + <a href="BasicExample.html" target="classFrame">BasicExample</a> + </li> + <li> + <a href="ConfigurationExample.html" target="classFrame">ConfigurationExample</a> + </li> + <li> + <a href="SnapshotIsolationExample.html" target="classFrame">SnapshotIsolationExample</a> + </li> + </ul> + + </body> +</html> \ No newline at end of file http://git-wip-us.apache.org/repos/asf/incubator-omid-site/blob/78ce5362/xref/org/apache/omid/examples/package-summary.html ---------------------------------------------------------------------- diff --git a/xref/org/apache/omid/examples/package-summary.html b/xref/org/apache/omid/examples/package-summary.html new file mode 100644 index 0000000..4f43ded --- /dev/null +++ b/xref/org/apache/omid/examples/package-summary.html @@ -0,0 +1,77 @@ + +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd"> +<html xml:lang="en" lang="en"> + <head> + <meta http-equiv="content-type" content="text/html; charset=UTF-8" /> + <title>Omid 0.8.1.38-SNAPSHOT Reference Package org.apache.omid.examples</title> + <link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="style" /> + </head> + <body> + <div class="overview"> + <ul> + <li> + <a href="../../../../overview-summary.html">Overview</a> + </li> + <li class="selected">Package</li> + </ul> + </div> + <div class="framenoframe"> + <ul> + <li> + <a href="../../../../index.html" target="_top">FRAMES</a> + </li> + <li> + <a href="package-summary.html" target="_top">NO FRAMES</a> + </li> + </ul> + </div> + + <h2>Package org.apache.omid.examples</h2> + + <table class="summary"> + <thead> + <tr> + <th>Class Summary</th> + </tr> + </thead> + <tbody> + <tr> + <td> + <a href="BasicExample.html" target="classFrame">BasicExample</a> + </td> + </tr> + <tr> + <td> + <a href="ConfigurationExample.html" target="classFrame">ConfigurationExample</a> + </td> + </tr> + <tr> + <td> + <a href="SnapshotIsolationExample.html" target="classFrame">SnapshotIsolationExample</a> + </td> + </tr> + </tbody> + </table> + + <div class="overview"> + <ul> + <li> + <a href="../../../../overview-summary.html">Overview</a> + </li> + <li class="selected">Package</li> + </ul> + </div> + <div class="framenoframe"> + <ul> + <li> + <a href="../../../../index.html" target="_top">FRAMES</a> + </li> + <li> + <a href="package-summary.html" target="_top">NO FRAMES</a> + </li> + </ul> + </div> + <hr /> + Copyright © 2011-2016 Apache Software Foundation. All Rights Reserved. + </body> +</html> \ No newline at end of file http://git-wip-us.apache.org/repos/asf/incubator-omid-site/blob/78ce5362/xref/org/apache/omid/metrics/AbstractMetricsConfig.html ---------------------------------------------------------------------- diff --git a/xref/org/apache/omid/metrics/AbstractMetricsConfig.html b/xref/org/apache/omid/metrics/AbstractMetricsConfig.html new file mode 100644 index 0000000..397beb9 --- /dev/null +++ b/xref/org/apache/omid/metrics/AbstractMetricsConfig.html @@ -0,0 +1,57 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";> +<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en"> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8" /> +<title>AbstractMetricsConfig xref</title> +<link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" /> +</head> +<body> +<div id="overview"><a href="../../../../../../target/site/apidocs/org/apache/omid/metrics/AbstractMetricsConfig.html">View Javadoc</a></div><pre> + +<a class="jxr_linenumber" name="1" href="#1">1</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="2" href="#2">2</a> <em class="jxr_javadoccomment"> * Licensed to the Apache Software Foundation (ASF) under one</em> +<a class="jxr_linenumber" name="3" href="#3">3</a> <em class="jxr_javadoccomment"> * or more contributor license agreements. See the NOTICE file</em> +<a class="jxr_linenumber" name="4" href="#4">4</a> <em class="jxr_javadoccomment"> * distributed with this work for additional information</em> +<a class="jxr_linenumber" name="5" href="#5">5</a> <em class="jxr_javadoccomment"> * regarding copyright ownership. The ASF licenses this file</em> +<a class="jxr_linenumber" name="6" href="#6">6</a> <em class="jxr_javadoccomment"> * to you under the Apache License, Version 2.0 (the</em> +<a class="jxr_linenumber" name="7" href="#7">7</a> <em class="jxr_javadoccomment"> * "License"); you may not use this file except in compliance</em> +<a class="jxr_linenumber" name="8" href="#8">8</a> <em class="jxr_javadoccomment"> * with the License. You may obtain a copy of the License at</em> +<a class="jxr_linenumber" name="9" href="#9">9</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="10" href="#10">10</a> <em class="jxr_javadoccomment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0"; target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em> +<a class="jxr_linenumber" name="11" href="#11">11</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="12" href="#12">12</a> <em class="jxr_javadoccomment"> * Unless required by applicable law or agreed to in writing, software</em> +<a class="jxr_linenumber" name="13" href="#13">13</a> <em class="jxr_javadoccomment"> * distributed under the License is distributed on an "AS IS" BASIS,</em> +<a class="jxr_linenumber" name="14" href="#14">14</a> <em class="jxr_javadoccomment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em> +<a class="jxr_linenumber" name="15" href="#15">15</a> <em class="jxr_javadoccomment"> * See the License for the specific language governing permissions and</em> +<a class="jxr_linenumber" name="16" href="#16">16</a> <em class="jxr_javadoccomment"> * limitations under the License.</em> +<a class="jxr_linenumber" name="17" href="#17">17</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="18" href="#18">18</a> <strong class="jxr_keyword">package</strong> org.apache.omid.metrics; +<a class="jxr_linenumber" name="19" href="#19">19</a> +<a class="jxr_linenumber" name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> com.google.inject.Inject; +<a class="jxr_linenumber" name="21" href="#21">21</a> +<a class="jxr_linenumber" name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> javax.inject.Named; +<a class="jxr_linenumber" name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> javax.inject.Singleton; +<a class="jxr_linenumber" name="24" href="#24">24</a> +<a class="jxr_linenumber" name="25" href="#25">25</a> @Singleton +<a class="jxr_linenumber" name="26" href="#26">26</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/omid/metrics/AbstractMetricsConfig.html">AbstractMetricsConfig</a> { +<a class="jxr_linenumber" name="27" href="#27">27</a> +<a class="jxr_linenumber" name="28" href="#28">28</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> DEFAULT_OUTPUT_FREQ_IN_SECS = 60; +<a class="jxr_linenumber" name="29" href="#29">29</a> +<a class="jxr_linenumber" name="30" href="#30">30</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String OUTPUT_FREQ_IN_SECS_KEY = <span class="jxr_string">"metrics.output.frequency.secs"</span>; +<a class="jxr_linenumber" name="31" href="#31">31</a> +<a class="jxr_linenumber" name="32" href="#32">32</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> outputFreqInSecs = DEFAULT_OUTPUT_FREQ_IN_SECS; +<a class="jxr_linenumber" name="33" href="#33">33</a> +<a class="jxr_linenumber" name="34" href="#34">34</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getOutputFreqInSecs() { +<a class="jxr_linenumber" name="35" href="#35">35</a> <strong class="jxr_keyword">return</strong> outputFreqInSecs; +<a class="jxr_linenumber" name="36" href="#36">36</a> } +<a class="jxr_linenumber" name="37" href="#37">37</a> +<a class="jxr_linenumber" name="38" href="#38">38</a> @Inject(optional = <strong class="jxr_keyword">true</strong>) +<a class="jxr_linenumber" name="39" href="#39">39</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setOutputFreqInSecs(@Named(OUTPUT_FREQ_IN_SECS_KEY) <strong class="jxr_keyword">int</strong> outputFreqInSecs) { +<a class="jxr_linenumber" name="40" href="#40">40</a> <strong class="jxr_keyword">this</strong>.outputFreqInSecs = outputFreqInSecs; +<a class="jxr_linenumber" name="41" href="#41">41</a> } +<a class="jxr_linenumber" name="42" href="#42">42</a> +<a class="jxr_linenumber" name="43" href="#43">43</a> } +</pre> +<hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/";>Maven</a></div></body> +</html> +
