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 <h1 title="程序包" class="title">程序包&nbsp;org.apache.calcite.util</h1>
 <div class="docSummary">
 <div class="block">Provides utility classes.</div>
 </div>
 <p>请参阅:&nbsp;<a href="#package.description">说明</a></p>
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 <tr>
 <th class="colFirst" scope="col">接口</th>
 <th class="colLast" scope="col">说明</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/CalciteParserException.html" title="org.apache.calcite.util中的接口">CalciteParserException</a></td>
 <td class="colLast">
 <div class="block">Tagging interface to allow a
  <a href="../../../../org/apache/calcite/sql/parser/SqlParseException.html" title="org.apache.calcite.sql.parser中的类"><code>SqlParseException</code></a>
  to be identified without adding a
  dependency on it from client-side code.</div>
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 <td class="colFirst"><a href="../../../../org/apache/calcite/util/CalciteValidatorException.html" title="org.apache.calcite.util中的接口">CalciteValidatorException</a></td>
 <td class="colLast">
 <div class="block">Tagging interface to allow a
  <a href="../../../../org/apache/calcite/sql/validate/SqlValidatorException.html" title="org.apache.calcite.sql.validate中的类"><code>SqlValidatorException</code></a>
  to be identified without
  adding a dependency on it from client-side code.</div>
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 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/Compatible.html" title="org.apache.calcite.util中的接口">Compatible</a></td>
 <td class="colLast">
 <div class="block">Compatibility layer.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/Glossary.html" title="org.apache.calcite.util中的接口">Glossary</a></td>
 <td class="colLast">
 <div class="block">A collection of terms.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/Litmus.html" title="org.apache.calcite.util中的接口">Litmus</a></td>
 <td class="colLast">
 <div class="block">Callback to be called when a test for validity succeeds or fails.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/PartiallyOrderedSet.Ordering.html" title="org.apache.calcite.util中的接口">PartiallyOrderedSet.Ordering</a>&lt;E&gt;</td>
 <td class="colLast">
 <div class="block">Ordering relation.</div>
 </td>
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 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/PrecedenceClimbingParser.Special.html" title="org.apache.calcite.util中的接口">PrecedenceClimbingParser.Special</a></td>
 <td class="colLast">
 <div class="block">Callback defining the behavior of a special function.</div>
 </td>
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 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/ReflectiveVisitDispatcher.html" title="org.apache.calcite.util中的接口">ReflectiveVisitDispatcher</a>&lt;R extends <a href="../../../../org/apache/calcite/util/ReflectiveVisitor.html" title="org.apache.calcite.util中的接口">ReflectiveVisitor</a>,E&gt;</td>
 <td class="colLast">
 <div class="block">Interface for looking up methods relating to reflective visitation.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/ReflectiveVisitor.html" title="org.apache.calcite.util中的接口">ReflectiveVisitor</a></td>
 <td class="colLast">
 <div class="block">Object which can be a target for a reflective visitation (see
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 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/ReflectUtil.MethodDispatcher.html" title="org.apache.calcite.util中的接口">ReflectUtil.MethodDispatcher</a>&lt;T&gt;</td>
 <td class="colLast">
 <div class="block">Can invoke a method on an object of type E with return type T.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/SaffronProperties.html" title="org.apache.calcite.util中的接口">SaffronProperties</a></td>
 <td class="colLast">已过时
 <div class="block"><span class="deprecationComment">As of release 1.19,
  replaced by <a href="../../../../org/apache/calcite/config/CalciteSystemProperty.html" title="org.apache.calcite.config中的类"><code>CalciteSystemProperty</code></a></span></div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/Source.html" title="org.apache.calcite.util中的接口">Source</a></td>
 <td class="colLast">
 <div class="block">Source of data.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/TryThreadLocal.Memo.html" title="org.apache.calcite.util中的接口">TryThreadLocal.Memo</a></td>
 <td class="colLast">
 <div class="block">Remembers to set the value back.</div>
 </td>
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 </li>
 <li class="blockList">
 <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="类概要表, 列表类和解释">
 <caption><span>类概要</span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">类</th>
 <th class="colLast" scope="col">说明</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/BarfingInvocationHandler.html" title="org.apache.calcite.util中的类">BarfingInvocationHandler</a></td>
 <td class="colLast">
 <div class="block">A class derived from <code>BarfingInvocationHandler</code> handles a method
  call by looking for a method in itself with identical parameters.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/Benchmark.html" title="org.apache.calcite.util中的类">Benchmark</a></td>
 <td class="colLast">
 <div class="block">Helps to run benchmarks by running the same task repeatedly and averaging
  the running times.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/Benchmark.Statistician.html" title="org.apache.calcite.util中的类">Benchmark.Statistician</a></td>
 <td class="colLast">
 <div class="block">Collects statistics for a test that is run multiple times.</div>
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 <td class="colFirst"><a href="../../../../org/apache/calcite/util/BitSets.html" title="org.apache.calcite.util中的类">BitSets</a></td>
 <td class="colLast">
 <div class="block">Utility functions for <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口"><code>BitSet</code></a>.</div>
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 <td class="colFirst"><a href="../../../../org/apache/calcite/util/BitString.html" title="org.apache.calcite.util中的类">BitString</a></td>
 <td class="colLast">
 <div class="block">String of bits.</div>
 </td>
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 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/Bug.html" title="org.apache.calcite.util中的类">Bug</a></td>
 <td class="colLast">
 <div class="block">Holder for a list of constants describing which bugs which have not been
  fixed.</div>
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 <td class="colFirst"><a href="../../../../org/apache/calcite/util/CancelFlag.html" title="org.apache.calcite.util中的类">CancelFlag</a></td>
 <td class="colLast">
 <div class="block">CancelFlag is used to post and check cancellation requests.</div>
 </td>
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 <td class="colFirst"><a href="../../../../org/apache/calcite/util/CastingList.html" title="org.apache.calcite.util中的类">CastingList</a>&lt;E&gt;</td>
 <td class="colLast">
 <div class="block">Converts a list whose members are automatically down-cast to a given type.</div>
 </td>
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 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/ChunkList.html" title="org.apache.calcite.util中的类">ChunkList</a>&lt;E&gt;</td>
 <td class="colLast">
 <div class="block">Implementation of list similar to <a href="https://docs.oracle.com/javase/8/docs/api/java/util/LinkedList.html?is-external=true" title="java.util中的类或接口"><code>LinkedList</code></a>, but stores elements
  in chunks of 32 elements.</div>
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 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/Closer.html" title="org.apache.calcite.util中的类">Closer</a></td>
 <td class="colLast">
 <div class="block">Helper that holds onto <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="java.lang中的类或接口"><code>AutoCloseable</code></a> resources and releases them
  when its <code>#close</code> method is called.</div>
 </td>
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 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/Compatible.Factory.html" title="org.apache.calcite.util中的类">Compatible.Factory</a></td>
 <td class="colLast">
 <div class="block">Creates the implementation of Compatible suitable for the
  current environment.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/CompositeList.html" title="org.apache.calcite.util中的类">CompositeList</a>&lt;T&gt;</td>
 <td class="colLast">
 <div class="block">Read-only list that is the concatenation of sub-lists.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/CompositeMap.html" title="org.apache.calcite.util中的类">CompositeMap</a>&lt;K,V&gt;</td>
 <td class="colLast">
 <div class="block">Unmodifiable view onto multiple backing maps.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/ConversionUtil.html" title="org.apache.calcite.util中的类">ConversionUtil</a></td>
 <td class="colLast">
 <div class="block">Utility functions for converting from one type to another</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/DateString.html" title="org.apache.calcite.util中的类">DateString</a></td>
 <td class="colLast">
 <div class="block">Date literal.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/DateTimeStringUtils.html" title="org.apache.calcite.util中的类">DateTimeStringUtils</a></td>
 <td class="colLast">
 <div class="block">Utility methods to manipulate String representation of DateTime values.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/DelegatingInvocationHandler.html" title="org.apache.calcite.util中的类">DelegatingInvocationHandler</a></td>
 <td class="colLast">
 <div class="block">A class derived from <code>DelegatingInvocationHandler</code> handles a
  method call by looking for a method in itself with identical parameters.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/EquivalenceSet.html" title="org.apache.calcite.util中的类">EquivalenceSet</a>&lt;E extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="java.lang中的类或接口">Comparable</a>&lt;E&gt;&gt;</td>
 <td class="colLast">
 <div class="block">Set of elements organized into equivalence classes.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/Filterator.html" title="org.apache.calcite.util中的类">Filterator</a>&lt;E&gt;</td>
 <td class="colLast">
 <div class="block">Filtered iterator class: an iterator that includes only elements that are
  instanceof a specified class.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/Holder.html" title="org.apache.calcite.util中的类">Holder</a>&lt;E&gt;</td>
 <td class="colLast">
 <div class="block">A mutable slot that can contain one object.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/ImmutableBeans.html" title="org.apache.calcite.util中的类">ImmutableBeans</a></td>
 <td class="colLast">
 <div class="block">Utilities for creating immutable beans.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></td>
 <td class="colLast">
 <div class="block">An immutable list of bits.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.Builder.html" title="org.apache.calcite.util中的类">ImmutableBitSet.Builder</a></td>
 <td class="colLast">
 <div class="block">Builder.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/ImmutableIntList.html" title="org.apache.calcite.util中的类">ImmutableIntList</a></td>
 <td class="colLast">
 <div class="block">An immutable list of <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口"><code>Integer</code></a> values backed by an array of
  <code>int</code>s.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/ImmutableNullableList.html" title="org.apache.calcite.util中的类">ImmutableNullableList</a>&lt;E&gt;</td>
 <td class="colLast">
 <div class="block">An immutable list that may contain null values.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/ImmutableNullableList.Builder.html" title="org.apache.calcite.util中的类">ImmutableNullableList.Builder</a>&lt;E&gt;</td>
 <td class="colLast">
 <div class="block">A builder for creating immutable nullable list instances.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/IntegerIntervalSet.html" title="org.apache.calcite.util中的类">IntegerIntervalSet</a></td>
 <td class="colLast">
 <div class="block">A set of non-negative integers defined by a sequence of points, intervals,
  and exclusions.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/IntList.html" title="org.apache.calcite.util中的类">IntList</a></td>
 <td class="colLast">已过时</td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/JsonBuilder.html" title="org.apache.calcite.util中的类">JsonBuilder</a></td>
 <td class="colLast">
 <div class="block">Builder for JSON documents (represented as <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="java.util中的类或接口"><code>List</code></a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="java.util中的类或接口"><code>Map</code></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"><code>String</code></a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="java.lang中的类或接口"><code>Boolean</code></a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="java.lang中的类或接口"><code>Long</code></a>).</div>
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 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/NameMap.html" title="org.apache.calcite.util中的类">NameMap</a>&lt;V&gt;</td>
 <td class="colLast">
 <div class="block">Map whose keys are names and can be accessed with and without case
  sensitivity.</div>
 </td>
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 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/NameMultimap.html" title="org.apache.calcite.util中的类">NameMultimap</a>&lt;V&gt;</td>
 <td class="colLast">
 <div class="block">Multimap whose keys are names and can be accessed with and without case
  sensitivity.</div>
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 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/NameSet.html" title="org.apache.calcite.util中的类">NameSet</a></td>
 <td class="colLast">
 <div class="block">Set of names that can be accessed with and without case sensitivity.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/NlsString.html" title="org.apache.calcite.util中的类">NlsString</a></td>
 <td class="colLast">
 <div class="block">A string, optionally with <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/Charset.html?is-external=true" title="java.nio.charset中的类或接口"><code>character set</code></a> and
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 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/NumberUtil.html" title="org.apache.calcite.util中的类">NumberUtil</a></td>
 <td class="colLast">
 <div class="block">Utility functions for working with numbers.</div>
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 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/Pair.html" title="org.apache.calcite.util中的类">Pair</a>&lt;T1,T2&gt;</td>
 <td class="colLast">
 <div class="block">Pair of objects.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/PartiallyOrderedSet.html" title="org.apache.calcite.util中的类">PartiallyOrderedSet</a>&lt;E&gt;</td>
 <td class="colLast">
 <div class="block">Partially-ordered set.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/Permutation.html" title="org.apache.calcite.util中的类">Permutation</a></td>
 <td class="colLast">
 <div class="block">Represents a mapping which reorders elements in an array.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/PrecedenceClimbingParser.html" title="org.apache.calcite.util中的类">PrecedenceClimbingParser</a></td>
 <td class="colLast">
 <div class="block">Parser that takes a collection of tokens (atoms and operators)
  and groups them together according to the operators' precedence
  and associativity.</div>
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 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/PrecedenceClimbingParser.Builder.html" title="org.apache.calcite.util中的类">PrecedenceClimbingParser.Builder</a></td>
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 <div class="block">Fluent helper to build a parser containing a list of tokens.</div>
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 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/PrecedenceClimbingParser.Call.html" title="org.apache.calcite.util中的类">PrecedenceClimbingParser.Call</a></td>
 <td class="colLast">
 <div class="block">A token that is a call to an operator with arguments.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/PrecedenceClimbingParser.Op.html" title="org.apache.calcite.util中的类">PrecedenceClimbingParser.Op</a></td>
 <td class="colLast">
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 <tr class="rowColor">
 <td class="colFirst"><a href="../../../../org/apache/calcite/util/PrecedenceClimbingParser.Result.html" title="org.apache.calcite.util中的类">PrecedenceClimbingParser.Result</a></td>
 <td class="colLast">
 <div class="block">Result of a call to <a href="../../../../org/apache/calcite/util/PrecedenceClimbingParser.Special.html#apply-org.apache.calcite.util.PrecedenceClimbingParser-org.apache.calcite.util.PrecedenceClimbingParser.SpecialOp-"><code>PrecedenceClimbingParser.Special.apply(org.apache.calcite.util.PrecedenceClimbingParser, org.apache.calcite.util.PrecedenceClimbingParser.SpecialOp)</code></a>.</div>
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