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<div class="subTitle">org.apache.calcite.util.trace</div>
<h2 title="类 CalciteTrace" class="title">类 CalciteTrace</h2>
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<pre>public abstract class <span class="typeNameLabel">CalciteTrace</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a></pre>
<div class="block">Contains all of the <code>tracers</code> used within
org.apache.calcite class libraries.
<h2>Note to developers</h2>
<p>Please ensure that every tracer used in org.apache.calcite is added to
this class as a <em>public static final</em> member called <code>
<i>component</i>Tracer</code>. For example, <a href="../../../../../org/apache/calcite/util/trace/CalciteTrace.html#getPlannerTracer--"><code>getPlannerTracer()</code></a> is the
tracer used by all classes which take part in the query planning process.
<p>The javadoc in this file is the primary source of information on what
tracers are available, so the javadoc against each tracer member must be an
up-to-date description of what that tracer does.
<p>In the class where the tracer is used, create a <em>private</em> (or
perhaps <em>protected</em>) <em>static final</em> member called <code>
tracer</code>.</div>
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<h3>字段概要</h3>
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<caption><span>字段</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">限定符和类型</th>
<th class="colLast" scope="col">字段和说明</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/util/trace/CalciteTrace.html#PARSER_LOGGER">PARSER_LOGGER</a></span></code>
<div class="block">The "org.apache.calcite.sql.parser" tracer reports parser events in
<a href="../../../../../org/apache/calcite/sql/parser/SqlParser.html" title="org.apache.calcite.sql.parser中的类"><code>SqlParser</code></a> and other classes at DEBUG.</div>
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<th class="colOne" scope="col">构造器和说明</th>
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<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/util/trace/CalciteTrace.html#CalciteTrace--">CalciteTrace</a></span>()</code>&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>所有方法</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">静态方法</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">具体方法</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">限定符和类型</th>
<th class="colLast" scope="col">方法和说明</th>
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<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/ThreadLocal.html?is-external=true" title="java.lang中的类或接口">ThreadLocal</a>&lt;<a href="../../../../../org/apache/calcite/linq4j/function/Function2.html" title="org.apache.calcite.linq4j.function中的接口">Function2</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Void.html?is-external=true" title="java.lang中的类或接口">Void</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="java.io中的类或接口">File</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&gt;&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/util/trace/CalciteTrace.html#getDynamicHandler--">getDynamicHandler</a></span>()</code>
<div class="block">Thread-local handler that is called with dynamically generated Java code.</div>
</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/util/trace/CalciteTrace.html#getParserTracer--">getParserTracer</a></span>()</code>
<div class="block">The "org.apache.calcite.sql.parser" tracer reports parse events.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/util/trace/CalciteTrace.html#getPlannerTracer--">getPlannerTracer</a></span>()</code>
<div class="block">The "org.apache.calcite.plan.RelOptPlanner" tracer prints the query
optimization process.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/util/trace/CalciteTrace.html#getRelImplementorTracer--">getRelImplementorTracer</a></span>()</code>
<div class="block">The "org.apache.calcite.rel.RelImplementorImpl" tracer reports when
expressions are bound to variables (DEBUG, formerly FINE)</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/util/trace/CalciteTrace.html#getSqlTimingTracer--">getSqlTimingTracer</a></span>()</code>
<div class="block">The tracer "org.apache.calcite.sql.timing" traces timing for
various stages of query processing.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/util/trace/CalciteTrace.html#getSqlToRelTracer--">getSqlToRelTracer</a></span>()</code>
<div class="block">The "org.apache.calcite.sql2rel" tracer reports parse events.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/util/trace/CalciteTrace.html#getStatementTracer--">getStatementTracer</a></span>()</code>
<div class="block">The "org.apache.calcite.prepare.Prepare" tracer prints the generated
program at DEBUG (formerly, FINE) or higher.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/util/trace/CalciteTrace.html#getTestTracer-java.lang.Class-">getTestTracer</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="java.lang中的类或接口">Class</a>&lt;?&gt;&nbsp;testClass)</code>
<div class="block">The tracers report important/useful information related with the execution
of unit tests.</div>
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<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="java.lang中的类或接口">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="java.lang中的类或接口">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="java.lang中的类或接口">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="java.lang中的类或接口">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="java.lang中的类或接口">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="java.lang中的类或接口">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="java.lang中的类或接口">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="java.lang中的类或接口">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="java.lang中的类或接口">wait</a></code></li>
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<h4>PARSER_LOGGER</h4>
<pre>public static final&nbsp;org.slf4j.Logger PARSER_LOGGER</pre>
<div class="block">The "org.apache.calcite.sql.parser" tracer reports parser events in
<a href="../../../../../org/apache/calcite/sql/parser/SqlParser.html" title="org.apache.calcite.sql.parser中的类"><code>SqlParser</code></a> and other classes at DEBUG.</div>
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<pre>public&nbsp;CalciteTrace()</pre>
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<h4>getPlannerTracer</h4>
<pre>public static&nbsp;org.slf4j.Logger&nbsp;getPlannerTracer()</pre>
<div class="block">The "org.apache.calcite.plan.RelOptPlanner" tracer prints the query
optimization process.
<p>Levels:
<ul>
<li><code>Logger.debug(String)</code> (formerly FINE) prints rules as they fire;
<li><code>Logger.trace(String)</code> (formerly FINER) prints and validates the whole expression
pool and rule queue as each rule fires;
<li><code>Logger.trace(String)</code> (formerly FINEST) also prints finer details like rule
importances.
</ul></div>
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<h4>getStatementTracer</h4>
<pre>public static&nbsp;org.slf4j.Logger&nbsp;getStatementTracer()</pre>
<div class="block">The "org.apache.calcite.prepare.Prepare" tracer prints the generated
program at DEBUG (formerly, FINE) or higher.</div>
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<h4>getRelImplementorTracer</h4>
<pre>public static&nbsp;org.slf4j.Logger&nbsp;getRelImplementorTracer()</pre>
<div class="block">The "org.apache.calcite.rel.RelImplementorImpl" tracer reports when
expressions are bound to variables (DEBUG, formerly FINE)</div>
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<h4>getSqlTimingTracer</h4>
<pre>public static&nbsp;org.slf4j.Logger&nbsp;getSqlTimingTracer()</pre>
<div class="block">The tracer "org.apache.calcite.sql.timing" traces timing for
various stages of query processing.</div>
<dl>
<dt><span class="seeLabel">另请参阅:</span></dt>
<dd><a href="../../../../../org/apache/calcite/util/trace/CalciteTimingTracer.html" title="org.apache.calcite.util.trace中的类"><code>CalciteTimingTracer</code></a></dd>
</dl>
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<pre>public static&nbsp;org.slf4j.Logger&nbsp;getParserTracer()</pre>
<div class="block">The "org.apache.calcite.sql.parser" tracer reports parse events.</div>
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<pre>public static&nbsp;org.slf4j.Logger&nbsp;getSqlToRelTracer()</pre>
<div class="block">The "org.apache.calcite.sql2rel" tracer reports parse events.</div>
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<h4>getTestTracer</h4>
<pre>public static&nbsp;org.slf4j.Logger&nbsp;getTestTracer(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="java.lang中的类或接口">Class</a>&lt;?&gt;&nbsp;testClass)</pre>
<div class="block">The tracers report important/useful information related with the execution
of unit tests.</div>
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<h4>getDynamicHandler</h4>
<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/ThreadLocal.html?is-external=true" title="java.lang中的类或接口">ThreadLocal</a>&lt;<a href="../../../../../org/apache/calcite/linq4j/function/Function2.html" title="org.apache.calcite.linq4j.function中的接口">Function2</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Void.html?is-external=true" title="java.lang中的类或接口">Void</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="java.io中的类或接口">File</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&gt;&gt;&nbsp;getDynamicHandler()</pre>
<div class="block">Thread-local handler that is called with dynamically generated Java code.
It exists for unit-testing.
The handler is never null; the default handler does nothing.</div>
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