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| <div class="subTitle">org.apache.calcite.profile</div> |
| <h2 title="接口 Profiler" class="title">接口 Profiler</h2> |
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| <dt>所有已知实现类:</dt> |
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| <pre>public interface <span class="typeNameLabel">Profiler</span></pre> |
| <div class="block">Analyzes data sets.</div> |
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| <th class="colFirst" scope="col">限定符和类型</th> |
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| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/profile/Profiler.Column.html" title="org.apache.calcite.profile中的类">Profiler.Column</a></span></code> |
| <div class="block">Column.</div> |
| </td> |
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| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/profile/Profiler.Distribution.html" title="org.apache.calcite.profile中的类">Profiler.Distribution</a></span></code> |
| <div class="block">Value distribution, including cardinality and optionally values, of a |
| column or set of columns.</div> |
| </td> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/profile/Profiler.FunctionalDependency.html" title="org.apache.calcite.profile中的类">Profiler.FunctionalDependency</a></span></code> |
| <div class="block">Functional dependency.</div> |
| </td> |
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| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/profile/Profiler.Profile.html" title="org.apache.calcite.profile中的类">Profiler.Profile</a></span></code> |
| <div class="block">The result of profiling, contains various statistics about the |
| data in a table.</div> |
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| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/profile/Profiler.RowCount.html" title="org.apache.calcite.profile中的类">Profiler.RowCount</a></span></code> |
| <div class="block">Whole data set.</div> |
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| <td class="colFirst"><code>static interface </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/profile/Profiler.Statistic.html" title="org.apache.calcite.profile中的接口">Profiler.Statistic</a></span></code> |
| <div class="block">Statistic produced by the profiler.</div> |
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| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/profile/Profiler.Unique.html" title="org.apache.calcite.profile中的类">Profiler.Unique</a></span></code> |
| <div class="block">Unique key.</div> |
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| <caption><span id="t0" class="activeTableTab"><span>所有方法</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">实例方法</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">抽象方法</a></span><span class="tabEnd"> </span></span></caption> |
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| <th class="colFirst" scope="col">限定符和类型</th> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/calcite/profile/Profiler.Profile.html" title="org.apache.calcite.profile中的类">Profiler.Profile</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/profile/Profiler.html#profile-java.lang.Iterable-java.util.List-java.util.Collection-">profile</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><<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><<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>>> rows, |
| <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><<a href="../../../../org/apache/calcite/profile/Profiler.Column.html" title="org.apache.calcite.profile中的类">Profiler.Column</a>> columns, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="java.util中的类或接口">Collection</a><<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>> initialGroups)</code> |
| <div class="block">Creates a profile of a data set.</div> |
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| <h4>profile</h4> |
| <pre><a href="../../../../org/apache/calcite/profile/Profiler.Profile.html" title="org.apache.calcite.profile中的类">Profiler.Profile</a> profile(<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><<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><<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>>> rows, |
| <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><<a href="../../../../org/apache/calcite/profile/Profiler.Column.html" title="org.apache.calcite.profile中的类">Profiler.Column</a>> columns, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="java.util中的类或接口">Collection</a><<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>> initialGroups)</pre> |
| <div class="block">Creates a profile of a data set.</div> |
| <dl> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>rows</code> - List of rows. Can be iterated over more than once (maybe not |
| cheaply)</dd> |
| <dd><code>columns</code> - Column definitions</dd> |
| <dd><code>initialGroups</code> - List of combinations of columns that should be |
| profiled early, because they may be interesting</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>A profile describing relationships within the data set</dd> |
| </dl> |
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