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 <div class="subTitle">org.apache.calcite.util</div>
 <h2 title="类 ImmutableBitSet" class="title">类 ImmutableBitSet</h2>
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 <div class="contentContainer">
 <ul class="inheritance">
 <li><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">java.lang.Object</a></li>
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 <li>org.apache.calcite.util.ImmutableBitSet</li>
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 <dl>
 <dt>所有已实现的接口:</dt>
 <dd><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="java.io中的类或接口">Serializable</a>, <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;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<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">Integer</a>&gt;</dd>
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 <pre>public class <span class="typeNameLabel">ImmutableBitSet</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>
 implements <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<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">Integer</a>&gt;, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="java.io中的类或接口">Serializable</a>, <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;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;</pre>
 <div class="block">An immutable list of bits.</div>
 <dl>
 <dt><span class="seeLabel">另请参阅:</span></dt>
 <dd><a href="../../../../serialized-form.html#org.apache.calcite.util.ImmutableBitSet">序列化表格</a></dd>
 </dl>
 </li>
 </ul>
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 <h3>嵌套类概要</h3>
 <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="嵌套类概要表, 列表嵌套类和解释">
 <caption><span>嵌套类</span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">限定符和类型</th>
 <th class="colLast" scope="col">类和说明</th>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static class&nbsp;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.Builder.html" title="org.apache.calcite.util中的类">ImmutableBitSet.Builder</a></span></code>
 <div class="block">Builder.</div>
 </td>
 </tr>
 </table>
 </li>
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 <h3>字段概要</h3>
 <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="字段概要表, 列表字段和解释">
 <caption><span>字段</span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <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 <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true" title="java.util中的类或接口">Comparator</a>&lt;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#COMPARATOR">COMPARATOR</a></span></code>
 <div class="block">Compares bit sets topologically, so that enclosing bit sets come first,
  using natural ordering to break ties.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static com.google.common.base.Function&lt;? super <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">BitSet</a>,<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#FROM_BIT_SET">FROM_BIT_SET</a></span></code>
 <div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static com.google.common.collect.Ordering&lt;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#ORDERING">ORDERING</a></span></code>&nbsp;</td>
 </tr>
 </table>
 </li>
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 <h3>方法概要</h3>
 <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="方法概要表, 列表方法和解释">
 <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="t2" class="tableTab"><span><a href="javascript:show(2);">实例方法</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><span id="t6" class="tableTab"><span><a href="javascript:show(32);">已过时的方法</a></span><span class="tabEnd">&nbsp;</span></span></caption>
 <tr>
 <th class="colFirst" scope="col">限定符和类型</th>
 <th class="colLast" scope="col">方法和说明</th>
 </tr>
 <tr id="i0" class="altColor">
 <td class="colFirst"><code><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">List</a>&lt;<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">Integer</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#asList--">asList</a></span>()</code>
 <div class="block">Creates a view onto this bit set as a list of integers.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="java.util中的类或接口">Set</a>&lt;<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">Integer</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#asSet--">asSet</a></span>()</code>
 <div class="block">Creates a view onto this bit set as a set of integers.</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/calcite/util/ImmutableBitSet.Builder.html" title="org.apache.calcite.util中的类">ImmutableBitSet.Builder</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#builder--">builder</a></span>()</code>
 <div class="block">Creates an empty Builder.</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/calcite/util/ImmutableBitSet.Builder.html" title="org.apache.calcite.util中的类">ImmutableBitSet.Builder</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#builder-org.apache.calcite.util.ImmutableBitSet-">builder</a></span>(<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;bitSet)</code>
 <div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#cardinality--">cardinality</a></span>()</code>
 <div class="block">Returns the number of bits set to <code>true</code> in this
  <code>ImmutableBitSet</code>.</div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#clear-int-">clear</a></span>(int&nbsp;i)</code>
 <div class="block">Returns a bit set the same as this but with a given bit cleared.</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#clearIf-int-boolean-">clearIf</a></span>(int&nbsp;i,
        boolean&nbsp;condition)</code>
 <div class="block">Returns a bit set the same as this but with a given bit cleared if
  condition is true.</div>
 </td>
 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/SortedMap.html?is-external=true" title="java.util中的类或接口">SortedMap</a>&lt;<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">Integer</a>,<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#closure-java.util.SortedMap-">closure</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/SortedMap.html?is-external=true" title="java.util中的类或接口">SortedMap</a>&lt;<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">Integer</a>,<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;&nbsp;equivalence)</code>
 <div class="block">Computes the closure of a map from integers to bits.</div>
 </td>
 </tr>
 <tr id="i8" class="altColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#compareTo-org.apache.calcite.util.ImmutableBitSet-">compareTo</a></span>(<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;o)</code>
 <div class="block">Compares this ImmutableBitSet with another, using a lexicographic
  ordering.</div>
 </td>
 </tr>
 <tr id="i9" class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#contains-org.apache.calcite.util.ImmutableBitSet-">contains</a></span>(<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;set1)</code>
 <div class="block">Returns true if all bits set in the second parameter are also set in the
  first.</div>
 </td>
 </tr>
 <tr id="i10" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#equals-java.lang.Object-">equals</a></span>(<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>&nbsp;obj)</code>
 <div class="block">Compares this object against the specified object.</div>
 </td>
 </tr>
 <tr id="i11" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#except-org.apache.calcite.util.ImmutableBitSet-">except</a></span>(<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;that)</code>
 <div class="block">Returns a bit set with all the bits in this set that are not in
  another.</div>
 </td>
 </tr>
 <tr id="i12" class="altColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#fromBitSet-java.util.BitSet-">fromBitSet</a></span>(<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">BitSet</a>&nbsp;input)</code>
 <div class="block">Returns a new immutable bit set containing all the bits in the given
  <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>
 </td>
 </tr>
 <tr id="i13" class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#get-int-">get</a></span>(int&nbsp;bitIndex)</code>
 <div class="block">Returns the value of the bit with the specified index.</div>
 </td>
 </tr>
 <tr id="i14" class="altColor">
 <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#get-int-int-">get</a></span>(int&nbsp;fromIndex,
    int&nbsp;toIndex)</code>
 <div class="block">Returns a new <code>ImmutableBitSet</code>
  composed of bits from this <code>ImmutableBitSet</code>
  from <code>fromIndex</code> (inclusive) to <code>toIndex</code> (exclusive).</div>
 </td>
 </tr>
 <tr id="i15" class="rowColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#hashCode--">hashCode</a></span>()</code>
 <div class="block">Returns the hash code value for this bit set.</div>
 </td>
 </tr>
 <tr id="i16" class="altColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#indexOf-int-">indexOf</a></span>(int&nbsp;bit)</code>
 <div class="block">The ordinal of a given bit, or -1 if it is not set.</div>
 </td>
 </tr>
 <tr id="i17" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#intersect-org.apache.calcite.util.ImmutableBitSet-">intersect</a></span>(<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;that)</code>
 <div class="block">Returns a bit set with all the bits set in both this set and in
  another.</div>
 </td>
 </tr>
 <tr id="i18" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#intersects-org.apache.calcite.util.ImmutableBitSet-">intersects</a></span>(<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;set)</code>
 <div class="block">Returns true if the specified <code>ImmutableBitSet</code> has any bits set to
  <code>true</code> that are also set to <code>true</code> in this
  <code>ImmutableBitSet</code>.</div>
 </td>
 </tr>
 <tr id="i19" class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#isEmpty--">isEmpty</a></span>()</code>
 <div class="block">Returns true if this <code>ImmutableBitSet</code> contains no bits that are set
  to <code>true</code>.</div>
 </td>
 </tr>
 <tr id="i20" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="java.util中的类或接口">Iterator</a>&lt;<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">Integer</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#iterator--">iterator</a></span>()</code>&nbsp;</td>
 </tr>
 <tr id="i21" class="rowColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#length--">length</a></span>()</code>
 <div class="block">Returns the "logical size" of this <code>ImmutableBitSet</code>: the index of
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 </td>
 </tr>
 <tr id="i22" class="altColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#nextClearBit-int-">nextClearBit</a></span>(int&nbsp;fromIndex)</code>
 <div class="block">Returns the index of the first bit that is set to <code>false</code>
  that occurs on or after the specified starting index.</div>
 </td>
 </tr>
 <tr id="i23" class="rowColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#nextSetBit-int-">nextSetBit</a></span>(int&nbsp;fromIndex)</code>
 <div class="block">Returns the index of the first bit that is set to <code>true</code>
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 </td>
 </tr>
 <tr id="i24" class="altColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#nth-int-">nth</a></span>(int&nbsp;n)</code>
 <div class="block">Returns the <code>n</code>th set bit.</div>
 </td>
 </tr>
 <tr id="i25" class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#of--">of</a></span>()</code>
 <div class="block">Creates an ImmutableBitSet with no bits.</div>
 </td>
 </tr>
 <tr id="i26" class="altColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#of-org.apache.calcite.util.ImmutableIntList-">of</a></span>(<a href="../../../../org/apache/calcite/util/ImmutableIntList.html" title="org.apache.calcite.util中的类">ImmutableIntList</a>&nbsp;bits)</code>
 <div class="block">Creates an ImmutableBitSet with given bits set.</div>
 </td>
 </tr>
 <tr id="i27" class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#of-int...-">of</a></span>(int...&nbsp;bits)</code>&nbsp;</td>
 </tr>
 <tr id="i28" class="altColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#of-java.lang.Iterable-">of</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<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">Integer</a>&gt;&nbsp;bits)</code>&nbsp;</td>
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 <tr id="i29" class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#permute-java.lang.Iterable-java.util.Map-">permute</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;&nbsp;bitSets,
        <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">Map</a>&lt;<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">Integer</a>,<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">Integer</a>&gt;&nbsp;map)</code>
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 </td>
 </tr>
 <tr id="i30" class="altColor">
 <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#permute-java.util.Map-">permute</a></span>(<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">Map</a>&lt;<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">Integer</a>,<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">Integer</a>&gt;&nbsp;map)</code>
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 <tr id="i31" class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#powerSet--">powerSet</a></span>()</code>
 <div class="block">Computes the power set (set of all sets) of this bit set.</div>
 </td>
 </tr>
 <tr id="i32" class="altColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#previousClearBit-int-">previousClearBit</a></span>(int&nbsp;fromIndex)</code>
 <div class="block">Returns the index of the nearest bit that is set to <code>false</code>
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 <tr id="i33" class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#range-int-">range</a></span>(int&nbsp;toIndex)</code>
 <div class="block">Creates an ImmutableBitSet with bits between 0 and <code>toIndex</code> set.</div>
 </td>
 </tr>
 <tr id="i34" class="altColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#range-int-int-">range</a></span>(int&nbsp;fromIndex,
      int&nbsp;toIndex)</code>
 <div class="block">Creates an ImmutableBitSet with bits from <code>fromIndex</code> (inclusive) to
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 </td>
 </tr>
 <tr id="i35" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/ImmutableBitSet.Builder.html" title="org.apache.calcite.util中的类">ImmutableBitSet.Builder</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#rebuild--">rebuild</a></span>()</code>
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 <tr id="i36" class="altColor">
 <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#set-int-">set</a></span>(int&nbsp;i)</code>
 <div class="block">Returns a bit set the same as this but with a given bit set.</div>
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 <tr id="i37" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
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 <div class="block">Returns a bit set the same as this but with a given bit set (if b is
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 <tr id="i38" class="altColor">
 <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#setIf-int-boolean-">setIf</a></span>(int&nbsp;bit,
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 <tr id="i39" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
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 <tr id="i40" class="altColor">
 <td class="colFirst"><code>int</code></td>
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 <tr id="i41" class="rowColor">
 <td class="colFirst"><code>int[]</code></td>
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 <div class="block">Converts this bit set to an array.</div>
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 <tr id="i42" class="altColor">
 <td class="colFirst"><code><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">BitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#toBitSet--">toBitSet</a></span>()</code>
 <div class="block">Returns a <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> that has the same contents as this
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 <td class="colFirst"><code><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">List</a>&lt;<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">Integer</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#toList--">toList</a></span>()</code>
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 <td class="colFirst"><code>long[]</code></td>
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 <tr id="i45" class="rowColor">
 <td class="colFirst"><code><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></code></td>
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 <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#union-java.util.BitSet-">union</a></span>(<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">BitSet</a>&nbsp;other)</code>
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 <tr id="i48" class="altColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
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 <tr id="i49" class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
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 </td>
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 <tr id="i50" class="altColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a></code></td>
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 <div class="block">Compares bit sets topologically, so that enclosing bit sets come first,
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 <pre>public static&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;of()</pre>
 <div class="block">Creates an ImmutableBitSet with no bits.</div>
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 <div class="block">Creates an ImmutableBitSet with given bits set.

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 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>bits</code> - Collection of bits to set</dd>
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 <pre>public static&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;valueOf(long...&nbsp;longs)</pre>
 <div class="block">Returns a new immutable bit set containing all the bits in the given long
  array.

  <p>More precisely,

  <blockquote><code>ImmutableBitSet.valueOf(longs).get(n)
    == ((longs[n/64] &amp; (1L&lt;&lt;(n%64))) != 0)</code></blockquote>

  <p>for all <code>n &lt; 64 * longs.length</code>.

  <p>This method is equivalent to
  <code>ImmutableBitSet.valueOf(LongBuffer.wrap(longs))</code>.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>longs</code> - a long array containing a little-endian representation
         of a sequence of bits to be used as the initial bits of the
         new bit set</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>a <code>ImmutableBitSet</code> containing all the bits in the long
          array</dd>
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 <pre>public static&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;valueOf(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/LongBuffer.html?is-external=true" title="java.nio中的类或接口">LongBuffer</a>&nbsp;longs)</pre>
 <div class="block">Returns a new immutable bit set containing all the bits in the given long
  buffer.</div>
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 <pre>public static&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;fromBitSet(<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">BitSet</a>&nbsp;input)</pre>
 <div class="block">Returns a new immutable bit set containing all the bits in the given
  <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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 <pre>public static&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;range(int&nbsp;fromIndex,
                                     int&nbsp;toIndex)</pre>
 <div class="block">Creates an ImmutableBitSet with bits from <code>fromIndex</code> (inclusive) to
  specified <code>toIndex</code> (exclusive) set to <code>true</code>.

  <p>For example, <code>range(0, 3)</code> returns a bit set with bits
  {0, 1, 2} set.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>fromIndex</code> - Index of the first bit to be set.</dd>
 <dd><code>toIndex</code> - Index after the last bit to be set.</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>Bit set</dd>
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 <pre>public static&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;range(int&nbsp;toIndex)</pre>
 <div class="block">Creates an ImmutableBitSet with bits between 0 and <code>toIndex</code> set.</div>
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 <pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;&nbsp;powerSet()</pre>
 <div class="block">Computes the power set (set of all sets) of this bit set.</div>
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 <pre>public&nbsp;boolean&nbsp;get(int&nbsp;bitIndex)</pre>
 <div class="block">Returns the value of the bit with the specified index. The value
  is <code>true</code> if the bit with the index <code>bitIndex</code>
  is currently set in this <code>ImmutableBitSet</code>; otherwise, the result
  is <code>false</code>.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>bitIndex</code> - the bit index</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>the value of the bit with the specified index</dd>
 <dt><span class="throwsLabel">抛出:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="java.lang中的类或接口">IndexOutOfBoundsException</a></code> - if the specified index is negative</dd>
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 <pre>public&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;get(int&nbsp;fromIndex,
                            int&nbsp;toIndex)</pre>
 <div class="block">Returns a new <code>ImmutableBitSet</code>
  composed of bits from this <code>ImmutableBitSet</code>
  from <code>fromIndex</code> (inclusive) to <code>toIndex</code> (exclusive).</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>fromIndex</code> - index of the first bit to include</dd>
 <dd><code>toIndex</code> - index after the last bit to include</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>a new <code>ImmutableBitSet</code> from a range of
          this <code>ImmutableBitSet</code></dd>
 <dt><span class="throwsLabel">抛出:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="java.lang中的类或接口">IndexOutOfBoundsException</a></code> - if <code>fromIndex</code> is negative,
          or <code>toIndex</code> is negative, or <code>fromIndex</code> is
          larger than <code>toIndex</code></dd>
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 <pre>public&nbsp;<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>&nbsp;toString()</pre>
 <div class="block">Returns a string representation of this bit set. For every index
  for which this <code>BitSet</code> contains a bit in the set
  state, the decimal representation of that index is included in
  the result. Such indices are listed in order from lowest to
  highest, separated by ",&nbsp;" (a comma and a space) and
  surrounded by braces, resulting in the usual mathematical
  notation for a set of integers.

  <p>Example:
  <pre>
  BitSet drPepper = new BitSet();</pre>
  Now <code>drPepper.toString()</code> returns "<code>{}</code>".
  <pre>
  drPepper.set(2);</pre>
  Now <code>drPepper.toString()</code> returns "<code>{2}</code>".
  <pre>
  drPepper.set(4);
  drPepper.set(10);</pre>
  Now <code>drPepper.toString()</code> returns "<code>{2, 4, 10}</code>".</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">覆盖:</span></dt>
 <dd><code><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></code>&nbsp;在类中&nbsp;<code><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></code></dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>a string representation of this bit set</dd>
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 <pre>public&nbsp;boolean&nbsp;intersects(<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;set)</pre>
 <div class="block">Returns true if the specified <code>ImmutableBitSet</code> has any bits set to
  <code>true</code> that are also set to <code>true</code> in this
  <code>ImmutableBitSet</code>.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>set</code> - <code>ImmutableBitSet</code> to intersect with</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>boolean indicating whether this <code>ImmutableBitSet</code> intersects
          the specified <code>ImmutableBitSet</code></dd>
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 <pre>public&nbsp;int&nbsp;cardinality()</pre>
 <div class="block">Returns the number of bits set to <code>true</code> in this
  <code>ImmutableBitSet</code>.</div>
 <dl>
 <dt><span class="seeLabel">另请参阅:</span></dt>
 <dd><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#size--"><code>size()</code></a></dd>
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 <pre>public&nbsp;int&nbsp;hashCode()</pre>
 <div class="block">Returns the hash code value for this bit set. The hash code
  depends only on which bits are set within this <code>ImmutableBitSet</code>.

  <p>The hash code is defined using the same calculation as
  <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true#hashCode--" title="java.util中的类或接口"><code>BitSet.hashCode()</code></a>.</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">覆盖:</span></dt>
 <dd><code><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></code>&nbsp;在类中&nbsp;<code><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></code></dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>the hash code value for this bit set</dd>
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 <pre>public&nbsp;int&nbsp;size()</pre>
 <div class="block">Returns the number of bits of space actually in use by this
  <code>ImmutableBitSet</code> to represent bit values.
  The maximum element in the set is the size - 1st element.</div>
 <dl>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>the number of bits currently in this bit set</dd>
 <dt><span class="seeLabel">另请参阅:</span></dt>
 <dd><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#cardinality--"><code>cardinality()</code></a></dd>
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 <pre>public&nbsp;boolean&nbsp;equals(<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>&nbsp;obj)</pre>
 <div class="block">Compares this object against the specified object.
  The result is <code>true</code> if and only if the argument is
  not <code>null</code> and is a <code>ImmutableBitSet</code> object that has
  exactly the same set of bits set to <code>true</code> as this bit
  set.</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">覆盖:</span></dt>
 <dd><code><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></code>&nbsp;在类中&nbsp;<code><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></code></dd>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>obj</code> - the object to compare with</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd><code>true</code> if the objects are the same;
          <code>false</code> otherwise</dd>
 <dt><span class="seeLabel">另请参阅:</span></dt>
 <dd><a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#size--"><code>size()</code></a></dd>
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 <pre>public&nbsp;int&nbsp;compareTo(<a href="https://docs.oracle.com/javase/8/docs/api/javax/annotation/Nonnull.html?is-external=true" title="javax.annotation中的类或接口">@Nonnull</a>
                      <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;o)</pre>
 <div class="block">Compares this ImmutableBitSet with another, using a lexicographic
  ordering.

  <p>Bit sets <code>(), (0), (0, 1), (0, 1, 3), (1), (2, 3)</code> are in sorted
  order.</p></div>
 <dl>
 <dt><span class="overrideSpecifyLabel">指定者:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true#compareTo-T-" title="java.lang中的类或接口">compareTo</a></code>&nbsp;在接口中&nbsp;<code><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;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;</code></dd>
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 <pre>public&nbsp;int&nbsp;nextSetBit(int&nbsp;fromIndex)</pre>
 <div class="block">Returns the index of the first bit that is set to <code>true</code>
  that occurs on or after the specified starting index. If no such
  bit exists then <code>-1</code> is returned.

  <p>Based upon <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true#nextSetBit-int-" title="java.util中的类或接口"><code>BitSet.nextSetBit(int)</code></a>.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>fromIndex</code> - the index to start checking from (inclusive)</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>the index of the next set bit, or <code>-1</code> if there
          is no such bit</dd>
 <dt><span class="throwsLabel">抛出:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="java.lang中的类或接口">IndexOutOfBoundsException</a></code> - if the specified index is negative</dd>
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 <pre>public&nbsp;int&nbsp;nextClearBit(int&nbsp;fromIndex)</pre>
 <div class="block">Returns the index of the first bit that is set to <code>false</code>
  that occurs on or after the specified starting index.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>fromIndex</code> - the index to start checking from (inclusive)</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>the index of the next clear bit</dd>
 <dt><span class="throwsLabel">抛出:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="java.lang中的类或接口">IndexOutOfBoundsException</a></code> - if the specified index is negative</dd>
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 <pre>public&nbsp;int&nbsp;previousClearBit(int&nbsp;fromIndex)</pre>
 <div class="block">Returns the index of the nearest bit that is set to <code>false</code>
  that occurs on or before the specified starting index.
  If no such bit exists, or if <code>-1</code> is given as the
  starting index, then <code>-1</code> is returned.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>fromIndex</code> - the index to start checking from (inclusive)</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>the index of the previous clear bit, or <code>-1</code> if there
          is no such bit</dd>
 <dt><span class="throwsLabel">抛出:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="java.lang中的类或接口">IndexOutOfBoundsException</a></code> - if the specified index is less
          than <code>-1</code></dd>
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 <pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="java.util中的类或接口">Iterator</a>&lt;<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">Integer</a>&gt;&nbsp;iterator()</pre>
 <dl>
 <dt><span class="overrideSpecifyLabel">指定者:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#iterator--" title="java.lang中的类或接口">iterator</a></code>&nbsp;在接口中&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<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">Integer</a>&gt;</code></dd>
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 <h4>toList</h4>
 <pre>public&nbsp;<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">List</a>&lt;<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">Integer</a>&gt;&nbsp;toList()</pre>
 <div class="block">Converts this bit set to a list.</div>
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 <h4>asList</h4>
 <pre>public&nbsp;<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">List</a>&lt;<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">Integer</a>&gt;&nbsp;asList()</pre>
 <div class="block">Creates a view onto this bit set as a list of integers.

  <p>The <code>cardinality</code> and <code>get</code> methods are both O(n), but
  the iterator is efficient. The list is memory efficient, and the CPU cost
  breaks even (versus <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html#toList--"><code>toList()</code></a>) if you intend to scan it only once.</div>
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 <pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="java.util中的类或接口">Set</a>&lt;<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">Integer</a>&gt;&nbsp;asSet()</pre>
 <div class="block">Creates a view onto this bit set as a set of integers.

  <p>The <code>size</code> and <code>contains</code> methods are both O(n), but the
  iterator is efficient.</div>
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 <pre>public&nbsp;int[]&nbsp;toArray()</pre>
 <div class="block">Converts this bit set to an array.

  <p>Each entry of the array is the ordinal of a set bit. The array is
  sorted.</div>
 <dl>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>Array of set bits</dd>
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 <pre>public&nbsp;long[]&nbsp;toLongArray()</pre>
 <div class="block">Converts this bit set to an array of little-endian words.</div>
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 <div class="block">Returns the union of this immutable bit set with a <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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 <pre>public&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;union(<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;other)</pre>
 <div class="block">Returns the union of this bit set with another.</div>
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 <pre>public static&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;union(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;? extends <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;&nbsp;sets)</pre>
 <div class="block">Returns the union of a number of bit sets.</div>
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 <pre>public&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;except(<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;that)</pre>
 <div class="block">Returns a bit set with all the bits in this set that are not in
  another.</div>
 <dl>
 <dt><span class="seeLabel">另请参阅:</span></dt>
 <dd><a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true#andNot-java.util.BitSet-" title="java.util中的类或接口"><code>BitSet.andNot(java.util.BitSet)</code></a></dd>
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 <pre>public&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;intersect(<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;that)</pre>
 <div class="block">Returns a bit set with all the bits set in both this set and in
  another.</div>
 <dl>
 <dt><span class="seeLabel">另请参阅:</span></dt>
 <dd><a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true#and-java.util.BitSet-" title="java.util中的类或接口"><code>BitSet.and(java.util.BitSet)</code></a></dd>
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 <div class="block">Returns true if all bits set in the second parameter are also set in the
  first. In other words, whether x is a super-set of y.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>set1</code> - Bitmap to be checked</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>Whether all bits in set1 are set in set0</dd>
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 <div class="block">The ordinal of a given bit, or -1 if it is not set.</div>
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 <pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/SortedMap.html?is-external=true" title="java.util中的类或接口">SortedMap</a>&lt;<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">Integer</a>,<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;&nbsp;closure(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/SortedMap.html?is-external=true" title="java.util中的类或接口">SortedMap</a>&lt;<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">Integer</a>,<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;&nbsp;equivalence)</pre>
 <div class="block">Computes the closure of a map from integers to bits.

  <p>The input must have an entry for each position.

  <p>Does not modify the input map or its bit sets.</div>
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 <pre>public&nbsp;int&nbsp;length()</pre>
 <div class="block">Returns the "logical size" of this <code>ImmutableBitSet</code>: the index of
  the highest set bit in the <code>ImmutableBitSet</code> plus one. Returns zero
  if the <code>ImmutableBitSet</code> contains no set bits.</div>
 <dl>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>the logical size of this <code>ImmutableBitSet</code></dd>
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 <pre>public&nbsp;boolean&nbsp;isEmpty()</pre>
 <div class="block">Returns true if this <code>ImmutableBitSet</code> contains no bits that are set
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 <div class="block">Creates an empty Builder.</div>
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 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="java.lang中的类或接口">@Deprecated</a>
 public static&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.Builder.html" title="org.apache.calcite.util中的类">ImmutableBitSet.Builder</a>&nbsp;builder(<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;bitSet)</pre>
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 <div class="block">Creates a Builder whose initial contents are the same as this
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 <pre>public&nbsp;int&nbsp;nth(int&nbsp;n)</pre>
 <div class="block">Returns the <code>n</code>th set bit.</div>
 <dl>
 <dt><span class="throwsLabel">抛出:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="java.lang中的类或接口">IndexOutOfBoundsException</a></code> - if n is less than 0 or greater
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 <div class="block">Returns a bit set the same as this but with a given bit set.</div>
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 <pre>public&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;set(int&nbsp;i,
                            boolean&nbsp;b)</pre>
 <div class="block">Returns a bit set the same as this but with a given bit set (if b is
  true) or unset (if b is false).</div>
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                              boolean&nbsp;condition)</pre>
 <div class="block">Returns a bit set the same as this but with a given bit set if condition
  is true.</div>
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 <pre>public&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;clear(int&nbsp;i)</pre>
 <div class="block">Returns a bit set the same as this but with a given bit cleared.</div>
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 <pre>public&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;clearIf(int&nbsp;i,
                                boolean&nbsp;condition)</pre>
 <div class="block">Returns a bit set the same as this but with a given bit cleared if
  condition is true.</div>
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 <pre>public&nbsp;<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">BitSet</a>&nbsp;toBitSet()</pre>
 <div class="block">Returns a <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> that has the same contents as this
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 <pre>public&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;permute(<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">Map</a>&lt;<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">Integer</a>,<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">Integer</a>&gt;&nbsp;map)</pre>
 <div class="block">Permutes a bit set according to a given mapping.</div>
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 <pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;&nbsp;permute(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&gt;&nbsp;bitSets,
                                                 <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">Map</a>&lt;<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">Integer</a>,<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">Integer</a>&gt;&nbsp;map)</pre>
 <div class="block">Permutes a collection of bit sets according to a given mapping.</div>
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 <pre>public&nbsp;<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;shift(int&nbsp;offset)</pre>
 <div class="block">Returns a bit set with every bit moved up <code>offset</code> positions.
  Offset may be negative, but throws if any bit ends up negative.</div>
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