2.x/javadoc/log4j-core/org/apache/logging/log4j/core/lookup/Interpolator.html - logging-log4j-site - Git at Google

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 <div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.apache.logging.log4j.core.lookup</a></div>
 <h1 title="Class Interpolator" class="title">Class Interpolator</h1>
 </div>
 <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a>
 <div class="inheritance"><a href="AbstractLookup.html" title="class in org.apache.logging.log4j.core.lookup">org.apache.logging.log4j.core.lookup.AbstractLookup</a>
 <div class="inheritance"><a href="AbstractConfigurationAwareLookup.html" title="class in org.apache.logging.log4j.core.lookup">org.apache.logging.log4j.core.lookup.AbstractConfigurationAwareLookup</a>
 <div class="inheritance">org.apache.logging.log4j.core.lookup.Interpolator</div>
 </div>
 </div>
 </div>
 <section class="class-description" id="class-description">
 <dl class="notes">
 <dt>All Implemented Interfaces:</dt>
 <dd><code><a href="../config/ConfigurationAware.html" title="interface in org.apache.logging.log4j.core.config">ConfigurationAware</a></code>, <code><a href="../config/LoggerContextAware.html" title="interface in org.apache.logging.log4j.core.config">LoggerContextAware</a></code>, <code><a href="StrLookup.html" title="interface in org.apache.logging.log4j.core.lookup">StrLookup</a></code></dd>
 </dl>
 <hr>
 <div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">Interpolator</span>
 <span class="extends-implements">extends <a href="AbstractConfigurationAwareLookup.html" title="class in org.apache.logging.log4j.core.lookup">AbstractConfigurationAwareLookup</a>
 implements <a href="../config/LoggerContextAware.html" title="interface in org.apache.logging.log4j.core.config">LoggerContextAware</a></span></div>
 <div class="block">Proxies all the other <a href="StrLookup.html" title="interface in org.apache.logging.log4j.core.lookup"><code>StrLookup</code></a>s.</div>
 </section>
 <section class="summary">
 <ul class="summary-list">
 <!-- =========== FIELD SUMMARY =========== -->
 <li>
 <section class="field-summary" id="field-summary">
 <h2>Field Summary</h2>
 <div class="caption"><span>Fields</span></div>
 <div class="summary-table three-column-summary">
 <div class="table-header col-first">Modifier and Type</div>
 <div class="table-header col-second">Field</div>
 <div class="table-header col-last">Description</div>
 <div class="col-first even-row-color"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/ref/WeakReference.html" title="class or interface in java.lang.ref" class="external-link">WeakReference</a>&lt;<a href="../LoggerContext.html" title="class in org.apache.logging.log4j.core">LoggerContext</a>&gt;</code></div>
 <div class="col-second even-row-color"><code><a href="#loggerContext" class="member-name-link">loggerContext</a></code></div>
 <div class="col-last even-row-color">&nbsp;</div>
 <div class="col-first odd-row-color"><code>static final char</code></div>
 <div class="col-second odd-row-color"><code><a href="#PREFIX_SEPARATOR" class="member-name-link">PREFIX_SEPARATOR</a></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Constant for the prefix separator.</div>
 </div>
 </div>
 <div class="inherited-list">
 <h3 id="fields-inherited-from-class-org.apache.logging.log4j.core.lookup.AbstractConfigurationAwareLookup">Fields inherited from class&nbsp;org.apache.logging.log4j.core.lookup.<a href="AbstractConfigurationAwareLookup.html" title="class in org.apache.logging.log4j.core.lookup">AbstractConfigurationAwareLookup</a></h3>
 <code><a href="AbstractConfigurationAwareLookup.html#configuration">configuration</a></code></div>
 <div class="inherited-list">
 <h3 id="fields-inherited-from-class-org.apache.logging.log4j.core.lookup.StrLookup">Fields inherited from interface&nbsp;org.apache.logging.log4j.core.lookup.<a href="StrLookup.html" title="interface in org.apache.logging.log4j.core.lookup">StrLookup</a></h3>
 <code><a href="StrLookup.html#CATEGORY">CATEGORY</a></code></div>
 </section>
 </li>
 <!-- ======== CONSTRUCTOR SUMMARY ======== -->
 <li>
 <section class="constructor-summary" id="constructor-summary">
 <h2>Constructor Summary</h2>
 <div class="caption"><span>Constructors</span></div>
 <div class="summary-table two-column-summary">
 <div class="table-header col-first">Constructor</div>
 <div class="table-header col-last">Description</div>
 <div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E()" class="member-name-link">Interpolator</a>()</code></div>
 <div class="col-last even-row-color">
 <div class="block">Create the default Interpolator.</div>
 </div>
 <div class="col-constructor-name odd-row-color"><code><a href="#%3Cinit%3E(java.util.Map)" class="member-name-link">Interpolator</a><wbr>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&gt;&nbsp;properties)</code></div>
 <div class="col-last odd-row-color">
 <div class="block">Creates the default Interpolator with the provided properties.</div>
 </div>
 <div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E(org.apache.logging.log4j.core.lookup.StrLookup)" class="member-name-link">Interpolator</a><wbr>(<a href="StrLookup.html" title="interface in org.apache.logging.log4j.core.lookup">StrLookup</a>&nbsp;defaultLookup)</code></div>
 <div class="col-last even-row-color">&nbsp;</div>
 <div class="col-constructor-name odd-row-color"><code><a href="#%3Cinit%3E(org.apache.logging.log4j.core.lookup.StrLookup,java.util.List)" class="member-name-link">Interpolator</a><wbr>(<a href="StrLookup.html" title="interface in org.apache.logging.log4j.core.lookup">StrLookup</a>&nbsp;defaultLookup,
  <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&gt;&nbsp;pluginPackages)</code></div>
 <div class="col-last odd-row-color">
 <div class="block">Constructs an Interpolator using a given StrLookup and a list of packages to find Lookup plugins in.</div>
 </div>
 </div>
 </section>
 </li>
 <!-- ========== METHOD SUMMARY =========== -->
 <li>
 <section class="method-summary" id="method-summary">
 <h2>Method Summary</h2>
 <div id="method-summary-table">
 <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div>
 <div id="method-summary-table.tabpanel" role="tabpanel">
 <div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0">
 <div class="table-header col-first">Modifier and Type</div>
 <div class="table-header col-second">Method</div>
 <div class="table-header col-last">Description</div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="LookupResult.html" title="interface in org.apache.logging.log4j.core.lookup">LookupResult</a></code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#evaluate(org.apache.logging.log4j.core.LogEvent,java.lang.String)" class="member-name-link">evaluate</a><wbr>(<a href="../LogEvent.html" title="interface in org.apache.logging.log4j.core">LogEvent</a>&nbsp;event,
  <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;var)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
 <div class="block">Resolves the specified variable.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="StrLookup.html" title="interface in org.apache.logging.log4j.core.lookup">StrLookup</a></code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getDefaultLookup()" class="member-name-link">getDefaultLookup</a>()</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="StrLookup.html" title="interface in org.apache.logging.log4j.core.lookup">StrLookup</a>&gt;</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getStrLookupMap()" class="member-name-link">getStrLookupMap</a>()</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#lookup(org.apache.logging.log4j.core.LogEvent,java.lang.String)" class="member-name-link">lookup</a><wbr>(<a href="../LogEvent.html" title="interface in org.apache.logging.log4j.core">LogEvent</a>&nbsp;event,
  <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;var)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
 <div class="block">Resolves the specified variable.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#setConfiguration(org.apache.logging.log4j.core.config.Configuration)" class="member-name-link">setConfiguration</a><wbr>(<a href="../config/Configuration.html" title="interface in org.apache.logging.log4j.core.config">Configuration</a>&nbsp;configuration)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
 <div class="block">Injects the current Configuration into this object.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#setLoggerContext(org.apache.logging.log4j.core.LoggerContext)" class="member-name-link">setLoggerContext</a><wbr>(<a href="../LoggerContext.html" title="class in org.apache.logging.log4j.core">LoggerContext</a>&nbsp;loggerContext)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
 <div class="block">Injects the current LoggerContext into this object.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#toString()" class="member-name-link">toString</a>()</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
 </div>
 </div>
 </div>
 <div class="inherited-list">
 <h3 id="methods-inherited-from-class-org.apache.logging.log4j.core.lookup.AbstractLookup">Methods inherited from class&nbsp;org.apache.logging.log4j.core.lookup.<a href="AbstractLookup.html" title="class in org.apache.logging.log4j.core.lookup">AbstractLookup</a></h3>
 <code><a href="AbstractLookup.html#evaluate(java.lang.String)">evaluate</a>, <a href="AbstractLookup.html#lookup(java.lang.String)">lookup</a></code></div>
 <div class="inherited-list">
 <h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
 <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#clone--" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#finalize--" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass--" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify--" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll--" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-" title="class or interface in java.lang" class="external-link">wait</a></code></div>
 </section>
 </li>
 </ul>
 </section>
 <section class="details">
 <ul class="details-list">
 <!-- ============ FIELD DETAIL =========== -->
 <li>
 <section class="field-details" id="field-detail">
 <h2>Field Details</h2>
 <ul class="member-list">
 <li>
 <section class="detail" id="PREFIX_SEPARATOR">
 <h3>PREFIX_SEPARATOR</h3>
 <div class="member-signature"><span class="modifiers">public static final</span>&nbsp;<span class="return-type">char</span>&nbsp;<span class="element-name">PREFIX_SEPARATOR</span></div>
 <div class="block">Constant for the prefix separator.</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd>
 <ul class="see-list">
 <li><a href="../../../../../../constant-values.html#org.apache.logging.log4j.core.lookup.Interpolator.PREFIX_SEPARATOR">Constant Field Values</a></li>
 </ul>
 </dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="loggerContext">
 <h3>loggerContext</h3>
 <div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/ref/WeakReference.html" title="class or interface in java.lang.ref" class="external-link">WeakReference</a>&lt;<a href="../LoggerContext.html" title="class in org.apache.logging.log4j.core">LoggerContext</a>&gt;</span>&nbsp;<span class="element-name">loggerContext</span></div>
 </section>
 </li>
 </ul>
 </section>
 </li>
 <!-- ========= CONSTRUCTOR DETAIL ======== -->
 <li>
 <section class="constructor-details" id="constructor-detail">
 <h2>Constructor Details</h2>
 <ul class="member-list">
 <li>
 <section class="detail" id="&lt;init&gt;(org.apache.logging.log4j.core.lookup.StrLookup)">
 <h3>Interpolator</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="element-name">Interpolator</span><wbr><span class="parameters">(<a href="StrLookup.html" title="interface in org.apache.logging.log4j.core.lookup">StrLookup</a>&nbsp;defaultLookup)</span></div>
 </section>
 </li>
 <li>
 <section class="detail" id="&lt;init&gt;(org.apache.logging.log4j.core.lookup.StrLookup,java.util.List)">
 <h3>Interpolator</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="element-name">Interpolator</span><wbr><span class="parameters">(<a href="StrLookup.html" title="interface in org.apache.logging.log4j.core.lookup">StrLookup</a>&nbsp;defaultLookup,
  <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&gt;&nbsp;pluginPackages)</span></div>
 <div class="block">Constructs an Interpolator using a given StrLookup and a list of packages to find Lookup plugins in.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>defaultLookup</code> - the default StrLookup to use as a fallback</dd>
 <dd><code>pluginPackages</code> - a list of packages to scan for Lookup plugins</dd>
 <dt>Since:</dt>
 <dd>2.1</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="&lt;init&gt;()">
 <h3>Interpolator</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="element-name">Interpolator</span>()</div>
 <div class="block">Create the default Interpolator.</div>
 </section>
 </li>
 <li>
 <section class="detail" id="&lt;init&gt;(java.util.Map)">
 <h3>Interpolator</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="element-name">Interpolator</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&gt;&nbsp;properties)</span></div>
 <div class="block">Creates the default Interpolator with the provided properties.</div>
 </section>
 </li>
 </ul>
 </section>
 </li>
 <!-- ============ METHOD DETAIL ========== -->
 <li>
 <section class="method-details" id="method-detail">
 <h2>Method Details</h2>
 <ul class="member-list">
 <li>
 <section class="detail" id="getDefaultLookup()">
 <h3>getDefaultLookup</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="StrLookup.html" title="interface in org.apache.logging.log4j.core.lookup">StrLookup</a></span>&nbsp;<span class="element-name">getDefaultLookup</span>()</div>
 </section>
 </li>
 <li>
 <section class="detail" id="getStrLookupMap()">
 <h3>getStrLookupMap</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="StrLookup.html" title="interface in org.apache.logging.log4j.core.lookup">StrLookup</a>&gt;</span>&nbsp;<span class="element-name">getStrLookupMap</span>()</div>
 </section>
 </li>
 <li>
 <section class="detail" id="lookup(org.apache.logging.log4j.core.LogEvent,java.lang.String)">
 <h3>lookup</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></span>&nbsp;<span class="element-name">lookup</span><wbr><span class="parameters">(<a href="../LogEvent.html" title="interface in org.apache.logging.log4j.core">LogEvent</a>&nbsp;event,
  <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;var)</span></div>
 <div class="block">Resolves the specified variable. This implementation will try to extract
  a variable prefix from the given variable name (the first colon (':') is
  used as prefix separator). It then passes the name of the variable with
  the prefix stripped to the lookup object registered for this prefix. If
  no prefix can be found or if the associated lookup object cannot resolve
  this variable, the default lookup object will be used.</div>
 <dl class="notes">
 <dt>Specified by:</dt>
 <dd><code><a href="StrLookup.html#lookup(org.apache.logging.log4j.core.LogEvent,java.lang.String)">lookup</a></code>&nbsp;in interface&nbsp;<code><a href="StrLookup.html" title="interface in org.apache.logging.log4j.core.lookup">StrLookup</a></code></dd>
 <dt>Parameters:</dt>
 <dd><code>event</code> - The current LogEvent or null.</dd>
 <dd><code>var</code> - the name of the variable whose value is to be looked up</dd>
 <dt>Returns:</dt>
 <dd>the value of this variable or <b>null</b> if it cannot be
  resolved</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="evaluate(org.apache.logging.log4j.core.LogEvent,java.lang.String)">
 <h3>evaluate</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="LookupResult.html" title="interface in org.apache.logging.log4j.core.lookup">LookupResult</a></span>&nbsp;<span class="element-name">evaluate</span><wbr><span class="parameters">(<a href="../LogEvent.html" title="interface in org.apache.logging.log4j.core">LogEvent</a>&nbsp;event,
  <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;var)</span></div>
 <div class="block">Resolves the specified variable. This implementation will try to extract
  a variable prefix from the given variable name (the first colon (':') is
  used as prefix separator). It then passes the name of the variable with
  the prefix stripped to the lookup object registered for this prefix. If
  no prefix can be found or if the associated lookup object cannot resolve
  this variable, the default lookup object will be used.</div>
 <dl class="notes">
 <dt>Specified by:</dt>
 <dd><code><a href="StrLookup.html#evaluate(org.apache.logging.log4j.core.LogEvent,java.lang.String)">evaluate</a></code>&nbsp;in interface&nbsp;<code><a href="StrLookup.html" title="interface in org.apache.logging.log4j.core.lookup">StrLookup</a></code></dd>
 <dt>Parameters:</dt>
 <dd><code>event</code> - The current LogEvent or null.</dd>
 <dd><code>var</code> - the name of the variable whose value is to be looked up</dd>
 <dt>Returns:</dt>
 <dd>the value of this variable or <b>null</b> if it cannot be
  resolved</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="setConfiguration(org.apache.logging.log4j.core.config.Configuration)">
 <h3>setConfiguration</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">setConfiguration</span><wbr><span class="parameters">(<a href="../config/Configuration.html" title="interface in org.apache.logging.log4j.core.config">Configuration</a>&nbsp;configuration)</span></div>
 <div class="block"><span class="descfrm-type-label">Description copied from interface:&nbsp;<code><a href="../config/ConfigurationAware.html#setConfiguration(org.apache.logging.log4j.core.config.Configuration)">ConfigurationAware</a></code></span></div>
 <div class="block">Injects the current Configuration into this object.</div>
 <dl class="notes">
 <dt>Specified by:</dt>
 <dd><code><a href="../config/ConfigurationAware.html#setConfiguration(org.apache.logging.log4j.core.config.Configuration)">setConfiguration</a></code>&nbsp;in interface&nbsp;<code><a href="../config/ConfigurationAware.html" title="interface in org.apache.logging.log4j.core.config">ConfigurationAware</a></code></dd>
 <dt>Overrides:</dt>
 <dd><code><a href="AbstractConfigurationAwareLookup.html#setConfiguration(org.apache.logging.log4j.core.config.Configuration)">setConfiguration</a></code>&nbsp;in class&nbsp;<code><a href="AbstractConfigurationAwareLookup.html" title="class in org.apache.logging.log4j.core.lookup">AbstractConfigurationAwareLookup</a></code></dd>
 <dt>Parameters:</dt>
 <dd><code>configuration</code> - the current Configuration</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="setLoggerContext(org.apache.logging.log4j.core.LoggerContext)">
 <h3>setLoggerContext</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">setLoggerContext</span><wbr><span class="parameters">(<a href="../LoggerContext.html" title="class in org.apache.logging.log4j.core">LoggerContext</a>&nbsp;loggerContext)</span></div>
 <div class="block"><span class="descfrm-type-label">Description copied from interface:&nbsp;<code><a href="../config/LoggerContextAware.html#setLoggerContext(org.apache.logging.log4j.core.LoggerContext)">LoggerContextAware</a></code></span></div>
 <div class="block">Injects the current LoggerContext into this object.</div>
 <dl class="notes">
 <dt>Specified by:</dt>
 <dd><code><a href="../config/LoggerContextAware.html#setLoggerContext(org.apache.logging.log4j.core.LoggerContext)">setLoggerContext</a></code>&nbsp;in interface&nbsp;<code><a href="../config/LoggerContextAware.html" title="interface in org.apache.logging.log4j.core.config">LoggerContextAware</a></code></dd>
 <dt>Parameters:</dt>
 <dd><code>loggerContext</code> - the current LoggerContext</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="toString()">
 <h3>toString</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></span>&nbsp;<span class="element-name">toString</span>()</div>
 <dl class="notes">
 <dt>Overrides:</dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--" title="class or interface in java.lang" class="external-link">toString</a></code>&nbsp;in class&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></code></dd>
 </dl>
 </section>
 </li>
 </ul>
 </section>
 </li>
 </ul>
 </section>
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