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apache / shardingsphere-doc / 487ffd0f06c6ff46c6339e6850aa87dafea8ef53 / . / statistics / staging / xref / org / apache / shardingsphere / sharding / distsql / handler / update / AlterDefaultShardingStrategyExecutor.html
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<div id="overview"><a href="../../../../../../../../apidocs/org/apache/shardingsphere/sharding/distsql/handler/update/AlterDefaultShardingStrategyExecutor.html">View Javadoc</a></div><pre>
<a class="jxr_linenumber" name="L1" href="#L1">1</a> <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="L2" href="#L2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em>
<a class="jxr_linenumber" name="L3" href="#L3">3</a> <em class="jxr_comment"> * contributor license agreements. See the NOTICE file distributed with</em>
<a class="jxr_linenumber" name="L4" href="#L4">4</a> <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em>
<a class="jxr_linenumber" name="L5" href="#L5">5</a> <em class="jxr_comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em>
<a class="jxr_linenumber" name="L6" href="#L6">6</a> <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em>
<a class="jxr_linenumber" name="L7" href="#L7">7</a> <em class="jxr_comment"> * the License. You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="L8" href="#L8">8</a> <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="L9" href="#L9">9</a> <em class="jxr_comment"> * <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="L10" href="#L10">10</a> <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="L11" href="#L11">11</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="L12" href="#L12">12</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a class="jxr_linenumber" name="L13" href="#L13">13</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a class="jxr_linenumber" name="L14" href="#L14">14</a> <em class="jxr_comment"> * See the License for the specific language governing permissions and</em>
<a class="jxr_linenumber" name="L15" href="#L15">15</a> <em class="jxr_comment"> * limitations under the License.</em>
<a class="jxr_linenumber" name="L16" href="#L16">16</a> <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="L17" href="#L17">17</a>
<a class="jxr_linenumber" name="L18" href="#L18">18</a> <strong class="jxr_keyword">package</strong> org.apache.shardingsphere.sharding.distsql.handler.update;
<a class="jxr_linenumber" name="L19" href="#L19">19</a>
<a class="jxr_linenumber" name="L20" href="#L20">20</a> <strong class="jxr_keyword">import</strong> lombok.Setter;
<a class="jxr_linenumber" name="L21" href="#L21">21</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.distsql.handler.engine.update.rdl.rule.spi.database.DatabaseRuleAlterExecutor;
<a class="jxr_linenumber" name="L22" href="#L22">22</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.distsql.handler.required.DistSQLExecutorCurrentRuleRequired;
<a class="jxr_linenumber" name="L23" href="#L23">23</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.distsql.segment.AlgorithmSegment;
<a class="jxr_linenumber" name="L24" href="#L24">24</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.infra.algorithm.core.config.AlgorithmConfiguration;
<a class="jxr_linenumber" name="L25" href="#L25">25</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.infra.algorithm.core.exception.EmptyAlgorithmException;
<a class="jxr_linenumber" name="L26" href="#L26">26</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.infra.algorithm.core.exception.InvalidAlgorithmConfigurationException;
<a class="jxr_linenumber" name="L27" href="#L27">27</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.infra.exception.core.ShardingSpherePreconditions;
<a class="jxr_linenumber" name="L28" href="#L28">28</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.infra.exception.core.external.sql.identifier.SQLExceptionIdentifier;
<a class="jxr_linenumber" name="L29" href="#L29">29</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.infra.exception.kernel.metadata.rule.MissingRequiredRuleException;
<a class="jxr_linenumber" name="L30" href="#L30">30</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.infra.metadata.database.ShardingSphereDatabase;
<a class="jxr_linenumber" name="L31" href="#L31">31</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.sharding.api.config.ShardingRuleConfiguration;
<a class="jxr_linenumber" name="L32" href="#L32">32</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.sharding.api.config.strategy.sharding.NoneShardingStrategyConfiguration;
<a class="jxr_linenumber" name="L33" href="#L33">33</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.sharding.api.config.strategy.sharding.ShardingStrategyConfiguration;
<a class="jxr_linenumber" name="L34" href="#L34">34</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.sharding.distsql.handler.converter.ShardingTableRuleStatementConverter;
<a class="jxr_linenumber" name="L35" href="#L35">35</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.sharding.distsql.handler.enums.ShardingStrategyLevelType;
<a class="jxr_linenumber" name="L36" href="#L36">36</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.sharding.distsql.handler.enums.ShardingStrategyType;
<a class="jxr_linenumber" name="L37" href="#L37">37</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.sharding.distsql.statement.AlterDefaultShardingStrategyStatement;
<a class="jxr_linenumber" name="L38" href="#L38">38</a> <strong class="jxr_keyword">import</strong> org.apache.shardingsphere.sharding.rule.ShardingRule;
<a class="jxr_linenumber" name="L39" href="#L39">39</a>
<a class="jxr_linenumber" name="L40" href="#L40">40</a> <strong class="jxr_keyword">import</strong> java.util.Optional;
<a class="jxr_linenumber" name="L41" href="#L41">41</a>
<a class="jxr_linenumber" name="L42" href="#L42">42</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L43" href="#L43">43</a> <em class="jxr_javadoccomment"> * Alter default sharding strategy executor.</em>
<a class="jxr_linenumber" name="L44" href="#L44">44</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L45" href="#L45">45</a> @DistSQLExecutorCurrentRuleRequired(ShardingRule.<strong class="jxr_keyword">class</strong>)
<a class="jxr_linenumber" name="L46" href="#L46">46</a> @Setter
<a class="jxr_linenumber" name="L47" href="#L47">47</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a name="AlterDefaultShardingStrategyExecutor" href="../../../../../../../org/apache/shardingsphere/sharding/distsql/handler/update/AlterDefaultShardingStrategyExecutor.html#AlterDefaultShardingStrategyExecutor">AlterDefaultShardingStrategyExecutor</a> <strong class="jxr_keyword">implements</strong> DatabaseRuleAlterExecutor&lt;AlterDefaultShardingStrategyStatement, ShardingRule, ShardingRuleConfiguration&gt; {
<a class="jxr_linenumber" name="L48" href="#L48">48</a>
<a class="jxr_linenumber" name="L49" href="#L49">49</a> <strong class="jxr_keyword">private</strong> <a name="ShardingSphereDatabase" href="../../../../../../../org/apache/shardingsphere/infra/metadata/database/ShardingSphereDatabase.html#ShardingSphereDatabase">ShardingSphereDatabase</a> database;
<a class="jxr_linenumber" name="L50" href="#L50">50</a>
<a class="jxr_linenumber" name="L51" href="#L51">51</a> <strong class="jxr_keyword">private</strong> <a name="ShardingRule" href="../../../../../../../org/apache/shardingsphere/sharding/rule/ShardingRule.html#ShardingRule">ShardingRule</a> rule;
<a class="jxr_linenumber" name="L52" href="#L52">52</a>
<a class="jxr_linenumber" name="L53" href="#L53">53</a> @Override
<a class="jxr_linenumber" name="L54" href="#L54">54</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> checkBeforeUpdate(<strong class="jxr_keyword">final</strong> <a name="AlterDefaultShardingStrategyStatement" href="../../../../../../../org/apache/shardingsphere/sharding/distsql/statement/AlterDefaultShardingStrategyStatement.html#AlterDefaultShardingStrategyStatement">AlterDefaultShardingStrategyStatement</a> sqlStatement) {
<a class="jxr_linenumber" name="L55" href="#L55">55</a> <strong class="jxr_keyword">if</strong> (!<span class="jxr_string">"none"</span>.equalsIgnoreCase(sqlStatement.getStrategyType())) {
<a class="jxr_linenumber" name="L56" href="#L56">56</a> checkAlgorithm(sqlStatement);
<a class="jxr_linenumber" name="L57" href="#L57">57</a> }
<a class="jxr_linenumber" name="L58" href="#L58">58</a> checkExist(sqlStatement);
<a class="jxr_linenumber" name="L59" href="#L59">59</a> }
<a class="jxr_linenumber" name="L60" href="#L60">60</a>
<a class="jxr_linenumber" name="L61" href="#L61">61</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> checkAlgorithm(<strong class="jxr_keyword">final</strong> <a name="AlterDefaultShardingStrategyStatement" href="../../../../../../../org/apache/shardingsphere/sharding/distsql/statement/AlterDefaultShardingStrategyStatement.html#AlterDefaultShardingStrategyStatement">AlterDefaultShardingStrategyStatement</a> sqlStatement) {
<a class="jxr_linenumber" name="L62" href="#L62">62</a> ShardingSpherePreconditions.checkState(ShardingStrategyType.isValidType(sqlStatement.getStrategyType()), () -&gt; <strong class="jxr_keyword">new</strong> <a name="InvalidAlgorithmConfigurationException" href="../../../../../../../org/apache/shardingsphere/infra/algorithm/core/exception/InvalidAlgorithmConfigurationException.html#InvalidAlgorithmConfigurationException">InvalidAlgorithmConfigurationException</a>(sqlStatement.getStrategyType()));
<a class="jxr_linenumber" name="L63" href="#L63">63</a> ShardingSpherePreconditions.checkState(ShardingStrategyType.getValueOf(sqlStatement.getStrategyType()).isValid(sqlStatement.getShardingColumn()),
<a class="jxr_linenumber" name="L64" href="#L64">64</a> () -&gt; <strong class="jxr_keyword">new</strong> <a name="InvalidAlgorithmConfigurationException" href="../../../../../../../org/apache/shardingsphere/infra/algorithm/core/exception/InvalidAlgorithmConfigurationException.html#InvalidAlgorithmConfigurationException">InvalidAlgorithmConfigurationException</a>(sqlStatement.getStrategyType()));
<a class="jxr_linenumber" name="L65" href="#L65">65</a> ShardingSpherePreconditions.checkState(isAlgorithmDefinitionExists(sqlStatement), () -&gt; <strong class="jxr_keyword">new</strong> <a name="EmptyAlgorithmException" href="../../../../../../../org/apache/shardingsphere/infra/algorithm/core/exception/EmptyAlgorithmException.html#EmptyAlgorithmException">EmptyAlgorithmException</a>(<span class="jxr_string">"Sharding"</span>, <strong class="jxr_keyword">new</strong> <a name="SQLExceptionIdentifier" href="../../../../../../../org/apache/shardingsphere/infra/exception/core/external/sql/identifier/SQLExceptionIdentifier.html#SQLExceptionIdentifier">SQLExceptionIdentifier</a>(<span class="jxr_string">""</span>)));
<a class="jxr_linenumber" name="L66" href="#L66">66</a> }
<a class="jxr_linenumber" name="L67" href="#L67">67</a>
<a class="jxr_linenumber" name="L68" href="#L68">68</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> isAlgorithmDefinitionExists(<strong class="jxr_keyword">final</strong> <a name="AlterDefaultShardingStrategyStatement" href="../../../../../../../org/apache/shardingsphere/sharding/distsql/statement/AlterDefaultShardingStrategyStatement.html#AlterDefaultShardingStrategyStatement">AlterDefaultShardingStrategyStatement</a> sqlStatement) {
<a class="jxr_linenumber" name="L69" href="#L69">69</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong> != sqlStatement.getAlgorithmSegment();
<a class="jxr_linenumber" name="L70" href="#L70">70</a> }
<a class="jxr_linenumber" name="L71" href="#L71">71</a>
<a class="jxr_linenumber" name="L72" href="#L72">72</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> checkExist(<strong class="jxr_keyword">final</strong> <a name="AlterDefaultShardingStrategyStatement" href="../../../../../../../org/apache/shardingsphere/sharding/distsql/statement/AlterDefaultShardingStrategyStatement.html#AlterDefaultShardingStrategyStatement">AlterDefaultShardingStrategyStatement</a> sqlStatement) {
<a class="jxr_linenumber" name="L73" href="#L73">73</a> Optional&lt;ShardingStrategyConfiguration&gt; strategyConfig = getStrategyConfiguration(sqlStatement.getDefaultType());
<a class="jxr_linenumber" name="L74" href="#L74">74</a> ShardingSpherePreconditions.checkState(strategyConfig.isPresent(),
<a class="jxr_linenumber" name="L75" href="#L75">75</a> () -&gt; <strong class="jxr_keyword">new</strong> <a name="MissingRequiredRuleException" href="../../../../../../../org/apache/shardingsphere/infra/exception/kernel/metadata/rule/MissingRequiredRuleException.html#MissingRequiredRuleException">MissingRequiredRuleException</a>(String.format(<span class="jxr_string">"Default sharding %s strategy"</span>, sqlStatement.getDefaultType().toLowerCase()), database.getName()));
<a class="jxr_linenumber" name="L76" href="#L76">76</a> }
<a class="jxr_linenumber" name="L77" href="#L77">77</a>
<a class="jxr_linenumber" name="L78" href="#L78">78</a> <strong class="jxr_keyword">private</strong> Optional&lt;ShardingStrategyConfiguration&gt; getStrategyConfiguration(<strong class="jxr_keyword">final</strong> String type) {
<a class="jxr_linenumber" name="L79" href="#L79">79</a> <a name="ShardingStrategyConfiguration" href="../../../../../../../org/apache/shardingsphere/sharding/api/config/strategy/sharding/ShardingStrategyConfiguration.html#ShardingStrategyConfiguration">ShardingStrategyConfiguration</a> result = type.equalsIgnoreCase(ShardingStrategyLevelType.TABLE.name())
<a class="jxr_linenumber" name="L80" href="#L80">80</a> ? rule.getConfiguration().getDefaultTableShardingStrategy()
<a class="jxr_linenumber" name="L81" href="#L81">81</a> : rule.getConfiguration().getDefaultDatabaseShardingStrategy();
<a class="jxr_linenumber" name="L82" href="#L82">82</a> <strong class="jxr_keyword">return</strong> Optional.ofNullable(result);
<a class="jxr_linenumber" name="L83" href="#L83">83</a> }
<a class="jxr_linenumber" name="L84" href="#L84">84</a>
<a class="jxr_linenumber" name="L85" href="#L85">85</a> @Override
<a class="jxr_linenumber" name="L86" href="#L86">86</a> <strong class="jxr_keyword">public</strong> <a name="ShardingRuleConfiguration" href="../../../../../../../org/apache/shardingsphere/sharding/api/config/ShardingRuleConfiguration.html#ShardingRuleConfiguration">ShardingRuleConfiguration</a> buildToBeAlteredRuleConfiguration(<strong class="jxr_keyword">final</strong> <a name="AlterDefaultShardingStrategyStatement" href="../../../../../../../org/apache/shardingsphere/sharding/distsql/statement/AlterDefaultShardingStrategyStatement.html#AlterDefaultShardingStrategyStatement">AlterDefaultShardingStrategyStatement</a> sqlStatement) {
<a class="jxr_linenumber" name="L87" href="#L87">87</a> <a name="ShardingRuleConfiguration" href="../../../../../../../org/apache/shardingsphere/sharding/api/config/ShardingRuleConfiguration.html#ShardingRuleConfiguration">ShardingRuleConfiguration</a> result = <strong class="jxr_keyword">new</strong> <a name="ShardingRuleConfiguration" href="../../../../../../../org/apache/shardingsphere/sharding/api/config/ShardingRuleConfiguration.html#ShardingRuleConfiguration">ShardingRuleConfiguration</a>();
<a class="jxr_linenumber" name="L88" href="#L88">88</a> <strong class="jxr_keyword">if</strong> (<span class="jxr_string">"none"</span>.equalsIgnoreCase(sqlStatement.getStrategyType())) {
<a class="jxr_linenumber" name="L89" href="#L89">89</a> setStrategyConfiguration(result, sqlStatement.getDefaultType(), <strong class="jxr_keyword">new</strong> <a name="NoneShardingStrategyConfiguration" href="../../../../../../../org/apache/shardingsphere/sharding/api/config/strategy/sharding/NoneShardingStrategyConfiguration.html#NoneShardingStrategyConfiguration">NoneShardingStrategyConfiguration</a>());
<a class="jxr_linenumber" name="L90" href="#L90">90</a> } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="L91" href="#L91">91</a> String shardingAlgorithmName = getShardingAlgorithmName(sqlStatement, result);
<a class="jxr_linenumber" name="L92" href="#L92">92</a> <a name="ShardingStrategyConfiguration" href="../../../../../../../org/apache/shardingsphere/sharding/api/config/strategy/sharding/ShardingStrategyConfiguration.html#ShardingStrategyConfiguration">ShardingStrategyConfiguration</a> strategyConfig = ShardingTableRuleStatementConverter.createStrategyConfiguration(
<a class="jxr_linenumber" name="L93" href="#L93">93</a> sqlStatement.getStrategyType(), sqlStatement.getShardingColumn(), shardingAlgorithmName);
<a class="jxr_linenumber" name="L94" href="#L94">94</a> setStrategyConfiguration(result, sqlStatement.getDefaultType(), strategyConfig);
<a class="jxr_linenumber" name="L95" href="#L95">95</a> }
<a class="jxr_linenumber" name="L96" href="#L96">96</a> <strong class="jxr_keyword">return</strong> result;
<a class="jxr_linenumber" name="L97" href="#L97">97</a> }
<a class="jxr_linenumber" name="L98" href="#L98">98</a>
<a class="jxr_linenumber" name="L99" href="#L99">99</a> <strong class="jxr_keyword">private</strong> String getShardingAlgorithmName(<strong class="jxr_keyword">final</strong> <a name="AlterDefaultShardingStrategyStatement" href="../../../../../../../org/apache/shardingsphere/sharding/distsql/statement/AlterDefaultShardingStrategyStatement.html#AlterDefaultShardingStrategyStatement">AlterDefaultShardingStrategyStatement</a> sqlStatement, <strong class="jxr_keyword">final</strong> <a name="ShardingRuleConfiguration" href="../../../../../../../org/apache/shardingsphere/sharding/api/config/ShardingRuleConfiguration.html#ShardingRuleConfiguration">ShardingRuleConfiguration</a> shardingRuleConfig) {
<a class="jxr_linenumber" name="L100" href="#L100">100</a> <strong class="jxr_keyword">return</strong> createDefaultAlgorithm(sqlStatement, shardingRuleConfig);
<a class="jxr_linenumber" name="L101" href="#L101">101</a> }
<a class="jxr_linenumber" name="L102" href="#L102">102</a>
<a class="jxr_linenumber" name="L103" href="#L103">103</a> <strong class="jxr_keyword">private</strong> String createDefaultAlgorithm(<strong class="jxr_keyword">final</strong> <a name="AlterDefaultShardingStrategyStatement" href="../../../../../../../org/apache/shardingsphere/sharding/distsql/statement/AlterDefaultShardingStrategyStatement.html#AlterDefaultShardingStrategyStatement">AlterDefaultShardingStrategyStatement</a> sqlStatement, <strong class="jxr_keyword">final</strong> <a name="ShardingRuleConfiguration" href="../../../../../../../org/apache/shardingsphere/sharding/api/config/ShardingRuleConfiguration.html#ShardingRuleConfiguration">ShardingRuleConfiguration</a> shardingRuleConfig) {
<a class="jxr_linenumber" name="L104" href="#L104">104</a> String result = getDefaultShardingAlgorithmName(sqlStatement.getDefaultType(), sqlStatement.getAlgorithmSegment().getName());
<a class="jxr_linenumber" name="L105" href="#L105">105</a> shardingRuleConfig.getShardingAlgorithms().put(result, createAlgorithmConfiguration(sqlStatement.getAlgorithmSegment()));
<a class="jxr_linenumber" name="L106" href="#L106">106</a> <strong class="jxr_keyword">return</strong> result;
<a class="jxr_linenumber" name="L107" href="#L107">107</a> }
<a class="jxr_linenumber" name="L108" href="#L108">108</a>
<a class="jxr_linenumber" name="L109" href="#L109">109</a> <strong class="jxr_keyword">private</strong> <a name="AlgorithmConfiguration" href="../../../../../../../org/apache/shardingsphere/infra/algorithm/core/config/AlgorithmConfiguration.html#AlgorithmConfiguration">AlgorithmConfiguration</a> createAlgorithmConfiguration(<strong class="jxr_keyword">final</strong> <a name="AlgorithmSegment" href="../../../../../../../org/apache/shardingsphere/distsql/segment/AlgorithmSegment.html#AlgorithmSegment">AlgorithmSegment</a> segment) {
<a class="jxr_linenumber" name="L110" href="#L110">110</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a name="AlgorithmConfiguration" href="../../../../../../../org/apache/shardingsphere/infra/algorithm/core/config/AlgorithmConfiguration.html#AlgorithmConfiguration">AlgorithmConfiguration</a>(segment.getName(), segment.getProps());
<a class="jxr_linenumber" name="L111" href="#L111">111</a> }
<a class="jxr_linenumber" name="L112" href="#L112">112</a>
<a class="jxr_linenumber" name="L113" href="#L113">113</a> <strong class="jxr_keyword">private</strong> String getDefaultShardingAlgorithmName(<strong class="jxr_keyword">final</strong> String defaultType, <strong class="jxr_keyword">final</strong> String algorithmType) {
<a class="jxr_linenumber" name="L114" href="#L114">114</a> <strong class="jxr_keyword">return</strong> String.format(<span class="jxr_string">"default_%s_%s"</span>, defaultType, algorithmType).toLowerCase();
<a class="jxr_linenumber" name="L115" href="#L115">115</a> }
<a class="jxr_linenumber" name="L116" href="#L116">116</a>
<a class="jxr_linenumber" name="L117" href="#L117">117</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> setStrategyConfiguration(<strong class="jxr_keyword">final</strong> <a name="ShardingRuleConfiguration" href="../../../../../../../org/apache/shardingsphere/sharding/api/config/ShardingRuleConfiguration.html#ShardingRuleConfiguration">ShardingRuleConfiguration</a> ruleConfig, <strong class="jxr_keyword">final</strong> String type, <strong class="jxr_keyword">final</strong> <a name="ShardingStrategyConfiguration" href="../../../../../../../org/apache/shardingsphere/sharding/api/config/strategy/sharding/ShardingStrategyConfiguration.html#ShardingStrategyConfiguration">ShardingStrategyConfiguration</a> shardingStrategyConfig) {
<a class="jxr_linenumber" name="L118" href="#L118">118</a> <strong class="jxr_keyword">if</strong> (type.equalsIgnoreCase(ShardingStrategyLevelType.TABLE.name())) {
<a class="jxr_linenumber" name="L119" href="#L119">119</a> ruleConfig.setDefaultTableShardingStrategy(shardingStrategyConfig);
<a class="jxr_linenumber" name="L120" href="#L120">120</a> } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="L121" href="#L121">121</a> ruleConfig.setDefaultDatabaseShardingStrategy(shardingStrategyConfig);
<a class="jxr_linenumber" name="L122" href="#L122">122</a> }
<a class="jxr_linenumber" name="L123" href="#L123">123</a> }
<a class="jxr_linenumber" name="L124" href="#L124">124</a>
<a class="jxr_linenumber" name="L125" href="#L125">125</a> @Override
<a class="jxr_linenumber" name="L126" href="#L126">126</a> <strong class="jxr_keyword">public</strong> <a name="ShardingRuleConfiguration" href="../../../../../../../org/apache/shardingsphere/sharding/api/config/ShardingRuleConfiguration.html#ShardingRuleConfiguration">ShardingRuleConfiguration</a> buildToBeDroppedRuleConfiguration(<strong class="jxr_keyword">final</strong> <a name="ShardingRuleConfiguration" href="../../../../../../../org/apache/shardingsphere/sharding/api/config/ShardingRuleConfiguration.html#ShardingRuleConfiguration">ShardingRuleConfiguration</a> toBeAlteredRuleConfig) {
<a class="jxr_linenumber" name="L127" href="#L127">127</a> <a name="ShardingRuleConfiguration" href="../../../../../../../org/apache/shardingsphere/sharding/api/config/ShardingRuleConfiguration.html#ShardingRuleConfiguration">ShardingRuleConfiguration</a> result = <strong class="jxr_keyword">new</strong> <a name="ShardingRuleConfiguration" href="../../../../../../../org/apache/shardingsphere/sharding/api/config/ShardingRuleConfiguration.html#ShardingRuleConfiguration">ShardingRuleConfiguration</a>();
<a class="jxr_linenumber" name="L128" href="#L128">128</a> UnusedAlgorithmFinder.findUnusedShardingAlgorithm(rule.getConfiguration()).forEach(each -&gt; result.getShardingAlgorithms().put(each, rule.getConfiguration().getShardingAlgorithms().get(each)));
<a class="jxr_linenumber" name="L129" href="#L129">129</a> <strong class="jxr_keyword">return</strong> result;
<a class="jxr_linenumber" name="L130" href="#L130">130</a> }
<a class="jxr_linenumber" name="L131" href="#L131">131</a>
<a class="jxr_linenumber" name="L132" href="#L132">132</a> @Override
<a class="jxr_linenumber" name="L133" href="#L133">133</a> <strong class="jxr_keyword">public</strong> Class&lt;ShardingRule&gt; getRuleClass() {
<a class="jxr_linenumber" name="L134" href="#L134">134</a> <strong class="jxr_keyword">return</strong> ShardingRule.<strong class="jxr_keyword">class</strong>;
<a class="jxr_linenumber" name="L135" href="#L135">135</a> }
<a class="jxr_linenumber" name="L136" href="#L136">136</a>
<a class="jxr_linenumber" name="L137" href="#L137">137</a> @Override
<a class="jxr_linenumber" name="L138" href="#L138">138</a> <strong class="jxr_keyword">public</strong> Class&lt;AlterDefaultShardingStrategyStatement&gt; getType() {
<a class="jxr_linenumber" name="L139" href="#L139">139</a> <strong class="jxr_keyword">return</strong> AlterDefaultShardingStrategyStatement.<strong class="jxr_keyword">class</strong>;
<a class="jxr_linenumber" name="L140" href="#L140">140</a> }
<a class="jxr_linenumber" name="L141" href="#L141">141</a> }
</pre>
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