javadocAggregate/org/apache/calcite/adapter/druid/package-summary.html - calcite-site - Git at Google

 <!DOCTYPE HTML>
 <html lang="en">
 <head>
 <!-- Generated by javadoc (17) -->
 <title>org.apache.calcite.adapter.druid (Apache Calcite API)</title>
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <meta name="description" content="declaration: package: org.apache.calcite.adapter.druid">
 <meta name="generator" content="javadoc/PackageWriterImpl">
 <link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style">
 <link rel="stylesheet" type="text/css" href="../../../../../script-dir/jquery-ui.min.css" title="Style">
 <link rel="stylesheet" type="text/css" href="../../../../../jquery-ui.overrides.css" title="Style">
 <script type="text/javascript" src="../../../../../script.js"></script>
 <script type="text/javascript" src="../../../../../script-dir/jquery-3.5.1.min.js"></script>
 <script type="text/javascript" src="../../../../../script-dir/jquery-ui.min.js"></script>
 </head>
 <body class="package-declaration-page">
 <script type="text/javascript">var evenRowColor = "even-row-color";
 var oddRowColor = "odd-row-color";
 var tableTab = "table-tab";
 var activeTableTab = "active-table-tab";
 var pathtoroot = "../../../../../";
 loadScripts(document, 'script');</script>
 <noscript>
 <div>JavaScript is disabled on your browser.</div>
 </noscript>
 <div class="flex-box">
 <header role="banner" class="flex-header">
 <nav role="navigation">
 <!-- ========= START OF TOP NAVBAR ======= -->
 <div class="top-nav" id="navbar-top">
 <div class="skip-nav"><a href="#skip-navbar-top" title="Skip navigation links">Skip navigation links</a></div>
 <div class="about-language"><b>Apache Calcite</b></div>
 <ul id="navbar-top-firstrow" class="nav-list" title="Navigation">
 <li><a href="../../../../../index.html">Overview</a></li>
 <li class="nav-bar-cell1-rev">Package</li>
 <li>Class</li>
 <li><a href="package-tree.html">Tree</a></li>
 <li><a href="../../../../../deprecated-list.html">Deprecated</a></li>
 <li><a href="../../../../../index-all.html">Index</a></li>
 <li><a href="../../../../../help-doc.html#package">Help</a></li>
 </ul>
 </div>
 <div class="sub-nav">
 <div>
 <ul class="sub-nav-list">
 <li>Package:&nbsp;</li>
 <li><a href="#package-description">Description</a>&nbsp;|&nbsp;</li>
 <li>Related Packages&nbsp;|&nbsp;</li>
 <li><a href="#class-summary">Classes and Interfaces</a></li>
 </ul>
 </div>
 <div class="nav-list-search"><label for="search-input">SEARCH:</label>
 <input type="text" id="search-input" value="search" disabled="disabled">
 <input type="reset" id="reset-button" value="reset" disabled="disabled">
 </div>
 </div>
 <!-- ========= END OF TOP NAVBAR ========= -->
 <span class="skip-nav" id="skip-navbar-top"></span></nav>
 </header>
 <div class="flex-content">
 <main role="main">
 <div class="header">
 <h1 title="Package org.apache.calcite.adapter.druid" class="title">Package org.apache.calcite.adapter.druid</h1>
 </div>
 <hr>
 <div class="package-signature">package <span class="element-name">org.apache.calcite.adapter.druid</span></div>
 <section class="package-description" id="package-description">
 <div class="block">Query provider based on a Druid database.</div>
 </section>
 <section class="summary">
 <ul class="summary-list">
 <li>
 <div id="class-summary">
 <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="class-summary-tab0" role="tab" aria-selected="true" aria-controls="class-summary.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('class-summary', 'class-summary', 2)" class="active-table-tab">All Classes and Interfaces</button><button id="class-summary-tab1" role="tab" aria-selected="false" aria-controls="class-summary.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('class-summary', 'class-summary-tab1', 2)" class="table-tab">Interfaces</button><button id="class-summary-tab2" role="tab" aria-selected="false" aria-controls="class-summary.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('class-summary', 'class-summary-tab2', 2)" class="table-tab">Classes</button><button id="class-summary-tab3" role="tab" aria-selected="false" aria-controls="class-summary.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('class-summary', 'class-summary-tab3', 2)" class="table-tab">Enums</button></div>
 <div id="class-summary.tabpanel" role="tabpanel">
 <div class="summary-table two-column-summary" aria-labelledby="class-summary-tab0">
 <div class="table-header col-first">Class</div>
 <div class="table-header col-last">Description</div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="BinaryOperatorConversion.html" title="class in org.apache.calcite.adapter.druid">BinaryOperatorConversion</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Binary operator conversion utility class; used to convert expressions like
  <code>exp1 Operator exp2</code>.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="CeilOperatorConversion.html" title="class in org.apache.calcite.adapter.druid">CeilOperatorConversion</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">DruidSqlOperatorConverter implementation that handles Ceil operations
  conversions.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="ComplexMetric.html" title="class in org.apache.calcite.adapter.druid">ComplexMetric</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Stores information about available complex metrics in the Druid Adapter.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="DefaultDimensionSpec.html" title="class in org.apache.calcite.adapter.druid">DefaultDimensionSpec</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Default implementation of DimensionSpec.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab1"><a href="DimensionSpec.html" title="interface in org.apache.calcite.adapter.druid">DimensionSpec</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab1">
 <div class="block">Interface for Druid DimensionSpec.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="DirectOperatorConversion.html" title="class in org.apache.calcite.adapter.druid">DirectOperatorConversion</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Direct operator conversion for expression like Function(exp_1,...exp_n)</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab1"><a href="DruidConnection.html" title="interface in org.apache.calcite.adapter.druid">DruidConnection</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab1">
 <div class="block">Connection to Druid.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="DruidDateTimeUtils.html" title="class in org.apache.calcite.adapter.druid">DruidDateTimeUtils</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Utilities for generating intervals from RexNode.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="DruidExpressions.html" title="class in org.apache.calcite.adapter.druid">DruidExpressions</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Expression utility class to transform Calcite expressions to Druid expressions when possible.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="DruidJson.html" title="interface in org.apache.calcite.adapter.druid">DruidJson</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Object that knows how to write itself to a
  <code>JsonGenerator</code>.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="DruidQuery.html" title="class in org.apache.calcite.adapter.druid">DruidQuery</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression representing a scan of a Druid data set.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="DruidQuery.JsonPostAggregation.html" title="class in org.apache.calcite.adapter.druid">DruidQuery.JsonPostAggregation</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Post-aggregator abstract writer.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="DruidQuery.QuerySpec.html" title="class in org.apache.calcite.adapter.druid">DruidQuery.QuerySpec</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Druid query specification.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="DruidRules.html" title="class in org.apache.calcite.adapter.druid">DruidRules</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Rules and relational operators for <a href="DruidQuery.html" title="class in org.apache.calcite.adapter.druid"><code>DruidQuery</code></a>.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="DruidRules.DruidAggregateProjectRule.html" title="class in org.apache.calcite.adapter.druid">DruidRules.DruidAggregateProjectRule</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Rule to push an <a href="../../rel/core/Aggregate.html" title="class in org.apache.calcite.rel.core"><code>Aggregate</code></a> and
  <a href="../../rel/core/Project.html" title="class in org.apache.calcite.rel.core"><code>Project</code></a> into a <a href="DruidQuery.html" title="class in org.apache.calcite.adapter.druid"><code>DruidQuery</code></a>.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="DruidRules.DruidAggregateProjectRule.DruidAggregateProjectRuleConfig.html" title="interface in org.apache.calcite.adapter.druid">DruidRules.DruidAggregateProjectRule.DruidAggregateProjectRuleConfig</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Rule configuration.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="DruidRules.DruidAggregateRule.html" title="class in org.apache.calcite.adapter.druid">DruidRules.DruidAggregateRule</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Rule to push an <a href="../../rel/core/Aggregate.html" title="class in org.apache.calcite.rel.core"><code>Aggregate</code></a>
  into a <a href="DruidQuery.html" title="class in org.apache.calcite.adapter.druid"><code>DruidQuery</code></a>.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="DruidRules.DruidAggregateRule.DruidAggregateRuleConfig.html" title="interface in org.apache.calcite.adapter.druid">DruidRules.DruidAggregateRule.DruidAggregateRuleConfig</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Rule configuration.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="DruidRules.DruidFilterRule.html" title="class in org.apache.calcite.adapter.druid">DruidRules.DruidFilterRule</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Rule to push a <a href="../../rel/core/Filter.html" title="class in org.apache.calcite.rel.core"><code>Filter</code></a> into a
  <a href="DruidQuery.html" title="class in org.apache.calcite.adapter.druid"><code>DruidQuery</code></a>.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="DruidRules.DruidFilterRule.DruidFilterRuleConfig.html" title="interface in org.apache.calcite.adapter.druid">DruidRules.DruidFilterRule.DruidFilterRuleConfig</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Rule configuration.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="DruidRules.DruidHavingFilterRule.html" title="class in org.apache.calcite.adapter.druid">DruidRules.DruidHavingFilterRule</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Rule to Push a Having <a href="../../rel/core/Filter.html" title="class in org.apache.calcite.rel.core"><code>Filter</code></a> into a <a href="DruidQuery.html" title="class in org.apache.calcite.adapter.druid"><code>DruidQuery</code></a>.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="DruidRules.DruidHavingFilterRule.DruidHavingFilterRuleConfig.html" title="interface in org.apache.calcite.adapter.druid">DruidRules.DruidHavingFilterRule.DruidHavingFilterRuleConfig</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Rule configuration.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="DruidRules.DruidPostAggregationProjectRule.html" title="class in org.apache.calcite.adapter.druid">DruidRules.DruidPostAggregationProjectRule</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Rule to push a <a href="../../rel/core/Project.html" title="class in org.apache.calcite.rel.core"><code>Project</code></a> into a
  <a href="DruidQuery.html" title="class in org.apache.calcite.adapter.druid"><code>DruidQuery</code></a> as a Post aggregator.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="DruidRules.DruidPostAggregationProjectRule.DruidPostAggregationProjectRuleConfig.html" title="interface in org.apache.calcite.adapter.druid">DruidRules.DruidPostAggregationProjectRule.DruidPostAggregationProjectRuleConfig</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Rule configuration.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="DruidRules.DruidProjectRule.html" title="class in org.apache.calcite.adapter.druid">DruidRules.DruidProjectRule</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Rule to push a <a href="../../rel/core/Project.html" title="class in org.apache.calcite.rel.core"><code>Project</code></a> into a
  <a href="DruidQuery.html" title="class in org.apache.calcite.adapter.druid"><code>DruidQuery</code></a>.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="DruidRules.DruidProjectRule.DruidProjectRuleConfig.html" title="interface in org.apache.calcite.adapter.druid">DruidRules.DruidProjectRule.DruidProjectRuleConfig</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Rule configuration.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="DruidRules.DruidSortRule.html" title="class in org.apache.calcite.adapter.druid">DruidRules.DruidSortRule</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Rule to push a <a href="../../rel/core/Sort.html" title="class in org.apache.calcite.rel.core"><code>Sort</code></a>
  into a <a href="DruidQuery.html" title="class in org.apache.calcite.adapter.druid"><code>DruidQuery</code></a>.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="DruidRules.DruidSortRule.DruidSortRuleConfig.html" title="interface in org.apache.calcite.adapter.druid">DruidRules.DruidSortRule.DruidSortRuleConfig</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Rule configuration.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="DruidSchema.html" title="class in org.apache.calcite.adapter.druid">DruidSchema</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Schema mapped onto a Druid instance.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="DruidSchemaFactory.html" title="class in org.apache.calcite.adapter.druid">DruidSchemaFactory</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Schema factory that creates Druid schemas.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="DruidSqlCastConverter.html" title="class in org.apache.calcite.adapter.druid">DruidSqlCastConverter</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Druid cast converter operator; used to translates Calcite casts to Druid
  expression casts.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="DruidSqlOperatorConverter.html" title="interface in org.apache.calcite.adapter.druid">DruidSqlOperatorConverter</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Defines how to convert a <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex"><code>RexNode</code></a> with a given Calcite SQL operator to
  a Druid expression.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="DruidTable.html" title="class in org.apache.calcite.adapter.druid">DruidTable</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Table mapped onto a Druid table.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="DruidTableFactory.html" title="class in org.apache.calcite.adapter.druid">DruidTableFactory</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Implementation of <a href="../../schema/TableFactory.html" title="interface in org.apache.calcite.schema"><code>TableFactory</code></a> for Druid.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab3"><a href="DruidType.html" title="enum in org.apache.calcite.adapter.druid">DruidType</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab3">
 <div class="block">Druid type.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="ExtractionDimensionSpec.html" title="class in org.apache.calcite.adapter.druid">ExtractionDimensionSpec</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Implementation of extraction function DimensionSpec.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab1"><a href="ExtractionFunction.html" title="interface in org.apache.calcite.adapter.druid">ExtractionFunction</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab1">
 <div class="block">Interface for Druid extraction functions.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="ExtractOperatorConversion.html" title="class in org.apache.calcite.adapter.druid">ExtractOperatorConversion</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Time extract operator conversion for expressions like
  <code>EXTRACT(timeUnit FROM arg)</code>.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="FloorOperatorConversion.html" title="class in org.apache.calcite.adapter.druid">FloorOperatorConversion</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">DruidSqlOperatorConverter implementation that handles Floor operations
  conversions.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="Granularities.html" title="class in org.apache.calcite.adapter.druid">Granularities</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Factory methods and helpers for <a href="Granularity.html" title="interface in org.apache.calcite.adapter.druid"><code>Granularity</code></a>.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab1"><a href="Granularity.html" title="interface in org.apache.calcite.adapter.druid">Granularity</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab1">
 <div class="block">A strategy by which Druid rolls up rows into sub-totals based on their
  timestamp values.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab3"><a href="Granularity.Type.html" title="enum in org.apache.calcite.adapter.druid">Granularity.Type</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab3">
 <div class="block">Type of supported periods for granularity.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="NaryOperatorConverter.html" title="class in org.apache.calcite.adapter.druid">NaryOperatorConverter</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Converts Calcite n-ary operators to Druid expressions, for example
  <code>arg1 Op arg2 Op arg3</code>.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab3"><a href="QueryType.html" title="enum in org.apache.calcite.adapter.druid">QueryType</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab3">
 <div class="block">Type of Druid query.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="SubstringOperatorConversion.html" title="class in org.apache.calcite.adapter.druid">SubstringOperatorConversion</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Converts Calcite SUBSTRING call to Druid Expression when possible.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="TimeExtractionFunction.html" title="class in org.apache.calcite.adapter.druid">TimeExtractionFunction</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Implementation of Druid time format extraction function.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="UnaryPrefixOperatorConversion.html" title="class in org.apache.calcite.adapter.druid">UnaryPrefixOperatorConversion</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Unary prefix Operator conversion class; used to convert expressions like
  Unary NOT and Minus.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="UnarySuffixOperatorConversion.html" title="class in org.apache.calcite.adapter.druid">UnarySuffixOperatorConversion</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Unary suffix operator conversion; used to convert function likes expression
  Unary_Operator.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="VirtualColumn.html" title="class in org.apache.calcite.adapter.druid">VirtualColumn</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Druid Json Expression based Virtual Column.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="VirtualColumn.Builder.html" title="class in org.apache.calcite.adapter.druid">VirtualColumn.Builder</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Virtual Column builder.</div>
 </div>
 </div>
 </div>
 </div>
 </li>
 </ul>
 </section>
 </main>
 <footer role="contentinfo">
 <hr>
 <p class="legal-copy"><small>Copyright &copy; 2012-2023 Apache Software Foundation. All Rights Reserved.</small></p>
 </footer>
 </div>
 </div>
 </body>
 </html>