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| <dt>所有已知实现类:</dt> |
| <dd><a href="../../../../../org/apache/calcite/rel/core/Aggregate.html" title="org.apache.calcite.rel.core中的类">Aggregate</a>, <a href="../../../../../org/apache/calcite/interpreter/Bindables.BindableAggregate.html" title="org.apache.calcite.interpreter中的类">Bindables.BindableAggregate</a>, <a href="../../../../../org/apache/calcite/interpreter/Bindables.BindableJoin.html" title="org.apache.calcite.interpreter中的类">Bindables.BindableJoin</a>, <a href="../../../../../org/apache/calcite/interpreter/Bindables.BindableProject.html" title="org.apache.calcite.interpreter中的类">Bindables.BindableProject</a>, <a href="../../../../../org/apache/calcite/interpreter/Bindables.BindableTableScan.html" title="org.apache.calcite.interpreter中的类">Bindables.BindableTableScan</a>, <a href="../../../../../org/apache/calcite/rel/core/Calc.html" title="org.apache.calcite.rel.core中的类">Calc</a>, <a href="../../../../../org/apache/calcite/adapter/cassandra/CassandraProject.html" title="org.apache.calcite.adapter.cassandra中的类">CassandraProject</a>, <a href="../../../../../org/apache/calcite/adapter/cassandra/CassandraTableScan.html" title="org.apache.calcite.adapter.cassandra中的类">CassandraTableScan</a>, <a href="../../../../../org/apache/calcite/adapter/csv/CsvTableScan.html" title="org.apache.calcite.adapter.csv中的类">CsvTableScan</a>, <a href="../../../../../org/apache/calcite/adapter/elasticsearch/ElasticsearchAggregate.html" title="org.apache.calcite.adapter.elasticsearch中的类">ElasticsearchAggregate</a>, <a href="../../../../../org/apache/calcite/adapter/elasticsearch/ElasticsearchProject.html" title="org.apache.calcite.adapter.elasticsearch中的类">ElasticsearchProject</a>, <a href="../../../../../org/apache/calcite/adapter/elasticsearch/ElasticsearchTableScan.html" title="org.apache.calcite.adapter.elasticsearch中的类">ElasticsearchTableScan</a>, <a href="../../../../../org/apache/calcite/adapter/enumerable/EnumerableAggregate.html" title="org.apache.calcite.adapter.enumerable中的类">EnumerableAggregate</a>, <a href="../../../../../org/apache/calcite/adapter/enumerable/EnumerableBatchNestedLoopJoin.html" title="org.apache.calcite.adapter.enumerable中的类">EnumerableBatchNestedLoopJoin</a>, <a href="../../../../../org/apache/calcite/adapter/enumerable/EnumerableCalc.html" title="org.apache.calcite.adapter.enumerable中的类">EnumerableCalc</a>, <a href="../../../../../org/apache/calcite/adapter/enumerable/EnumerableHashJoin.html" title="org.apache.calcite.adapter.enumerable中的类">EnumerableHashJoin</a>, <a href="../../../../../org/apache/calcite/adapter/enumerable/EnumerableMergeJoin.html" title="org.apache.calcite.adapter.enumerable中的类">EnumerableMergeJoin</a>, <a href="../../../../../org/apache/calcite/adapter/enumerable/EnumerableNestedLoopJoin.html" title="org.apache.calcite.adapter.enumerable中的类">EnumerableNestedLoopJoin</a>, <a href="../../../../../org/apache/calcite/adapter/enumerable/EnumerableProject.html" title="org.apache.calcite.adapter.enumerable中的类">EnumerableProject</a>, <a href="../../../../../org/apache/calcite/adapter/enumerable/EnumerableTableScan.html" title="org.apache.calcite.adapter.enumerable中的类">EnumerableTableScan</a>, <a href="../../../../../org/apache/calcite/rel/core/EquiJoin.html" title="org.apache.calcite.rel.core中的类">EquiJoin</a>, <a href="../../../../../org/apache/calcite/rel/rules/EquiJoin.html" title="org.apache.calcite.rel.rules中的类">EquiJoin</a>, <a href="../../../../../org/apache/calcite/adapter/geode/rel/GeodeAggregate.html" title="org.apache.calcite.adapter.geode.rel中的类">GeodeAggregate</a>, <a href="../../../../../org/apache/calcite/adapter/geode/rel/GeodeProject.html" title="org.apache.calcite.adapter.geode.rel中的类">GeodeProject</a>, <a href="../../../../../org/apache/calcite/adapter/geode/rel/GeodeTableScan.html" title="org.apache.calcite.adapter.geode.rel中的类">GeodeTableScan</a>, <a href="../../../../../org/apache/calcite/adapter/jdbc/JdbcRules.JdbcAggregate.html" title="org.apache.calcite.adapter.jdbc中的类">JdbcRules.JdbcAggregate</a>, <a href="../../../../../org/apache/calcite/adapter/jdbc/JdbcRules.JdbcJoin.html" title="org.apache.calcite.adapter.jdbc中的类">JdbcRules.JdbcJoin</a>, <a href="../../../../../org/apache/calcite/adapter/jdbc/JdbcRules.JdbcProject.html" title="org.apache.calcite.adapter.jdbc中的类">JdbcRules.JdbcProject</a>, <a href="../../../../../org/apache/calcite/adapter/jdbc/JdbcTableScan.html" title="org.apache.calcite.adapter.jdbc中的类">JdbcTableScan</a>, <a href="../../../../../org/apache/calcite/rel/core/Join.html" title="org.apache.calcite.rel.core中的类">Join</a>, <a href="../../../../../org/apache/calcite/rel/logical/LogicalAggregate.html" title="org.apache.calcite.rel.logical中的类">LogicalAggregate</a>, <a href="../../../../../org/apache/calcite/rel/logical/LogicalCalc.html" title="org.apache.calcite.rel.logical中的类">LogicalCalc</a>, <a href="../../../../../org/apache/calcite/rel/logical/LogicalJoin.html" title="org.apache.calcite.rel.logical中的类">LogicalJoin</a>, <a href="../../../../../org/apache/calcite/rel/logical/LogicalProject.html" title="org.apache.calcite.rel.logical中的类">LogicalProject</a>, <a href="../../../../../org/apache/calcite/rel/logical/LogicalTableScan.html" title="org.apache.calcite.rel.logical中的类">LogicalTableScan</a>, <a href="../../../../../org/apache/calcite/adapter/mongodb/MongoAggregate.html" title="org.apache.calcite.adapter.mongodb中的类">MongoAggregate</a>, <a href="../../../../../org/apache/calcite/adapter/mongodb/MongoProject.html" title="org.apache.calcite.adapter.mongodb中的类">MongoProject</a>, <a href="../../../../../org/apache/calcite/adapter/mongodb/MongoTableScan.html" title="org.apache.calcite.adapter.mongodb中的类">MongoTableScan</a>, <a href="../../../../../org/apache/calcite/adapter/pig/PigAggregate.html" title="org.apache.calcite.adapter.pig中的类">PigAggregate</a>, <a href="../../../../../org/apache/calcite/adapter/pig/PigJoin.html" title="org.apache.calcite.adapter.pig中的类">PigJoin</a>, <a href="../../../../../org/apache/calcite/adapter/pig/PigProject.html" title="org.apache.calcite.adapter.pig中的类">PigProject</a>, <a href="../../../../../org/apache/calcite/adapter/pig/PigTableScan.html" title="org.apache.calcite.adapter.pig中的类">PigTableScan</a>, <a href="../../../../../org/apache/calcite/rel/core/Project.html" title="org.apache.calcite.rel.core中的类">Project</a>, <a href="../../../../../org/apache/calcite/adapter/splunk/SplunkTableScan.html" title="org.apache.calcite.adapter.splunk中的类">SplunkTableScan</a>, <a href="../../../../../org/apache/calcite/schema/impl/StarTable.StarTableScan.html" title="org.apache.calcite.schema.impl中的类">StarTable.StarTableScan</a>, <a href="../../../../../org/apache/calcite/rel/core/TableScan.html" title="org.apache.calcite.rel.core中的类">TableScan</a></dd> |
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| <hr> |
| <br> |
| <pre>public interface <span class="typeNameLabel">Hintable</span></pre> |
| <div class="block"><a href="../../../../../org/apache/calcite/rel/hint/Hintable.html" title="org.apache.calcite.rel.hint中的接口"><code>Hintable</code></a> is a kind of <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口"><code>RelNode</code></a> that can attach <a href="../../../../../org/apache/calcite/rel/hint/RelHint.html" title="org.apache.calcite.rel.hint中的类"><code>RelHint</code></a>s. |
| |
| <p>This interface is experimental, <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口"><code>RelNode</code></a>s that implement it |
| have a constructor parameter named "hints" used to construct relational expression |
| with given hints. |
| |
| <p>Current design is not that elegant and mature, because we have to |
| copy the hints whenever these relational expressions are copied or used to |
| derive new relational expressions. |
| Even though we have implemented the mechanism to propagate the hints, for large queries, |
| there would be many cases where the hints are not copied to the right RelNode, |
| and the effort/memory is wasted if we are copying the hint to a RelNode |
| but the hint is not used.</div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
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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"> </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><span id="t5" class="tableTab"><span><a href="javascript:show(16);">默认方法</a></span><span class="tabEnd"> </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>default <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/hint/Hintable.html#attachHints-java.util.List-">attachHints</a></span>(<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/rel/hint/RelHint.html" title="org.apache.calcite.rel.hint中的类">RelHint</a>> hintList)</code> |
| <div class="block">Attaches list of hints to this relational expression.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>com.google.common.collect.ImmutableList<<a href="../../../../../org/apache/calcite/rel/hint/RelHint.html" title="org.apache.calcite.rel.hint中的类">RelHint</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/hint/Hintable.html#getHints--">getHints</a></span>()</code> |
| <div class="block">Returns the hints of this relational expressions as an immutable list.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>default <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/hint/Hintable.html#withHints-java.util.List-">withHints</a></span>(<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/rel/hint/RelHint.html" title="org.apache.calcite.rel.hint中的类">RelHint</a>> hintList)</code> |
| <div class="block">Returns a new relational expression with the specified hints <code>hintList</code>.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
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| <!-- ============ METHOD DETAIL ========== --> |
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| <!-- --> |
| </a> |
| <h3>方法详细资料</h3> |
| <a name="attachHints-java.util.List-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>attachHints</h4> |
| <pre>default <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a> attachHints(<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/rel/hint/RelHint.html" title="org.apache.calcite.rel.hint中的类">RelHint</a>> hintList)</pre> |
| <div class="block">Attaches list of hints to this relational expression. |
| |
| <p>This method is only for internal use during sql-to-rel conversion. |
| |
| <p>Sub-class should return a new copy of the relational expression. |
| |
| <p>The default implementation merges the given hints with existing ones, |
| put them in one list and eliminate the duplicates; then |
| returns a new copy of this relational expression with the merged hints.</div> |
| <dl> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>hintList</code> - The hints to attach to this relational expression</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Relational expression with the hints <code>hintList</code> attached</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="withHints-java.util.List-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>withHints</h4> |
| <pre>default <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a> withHints(<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/rel/hint/RelHint.html" title="org.apache.calcite.rel.hint中的类">RelHint</a>> hintList)</pre> |
| <div class="block">Returns a new relational expression with the specified hints <code>hintList</code>. |
| |
| <p>This method should be overridden by every logical node that supports hint. |
| It is only for internal use during decorrelation. |
| |
| <p>Sub-class should return a new copy of the relational expression. |
| |
| <p>The default implementation returns the relational expression directly |
| only because not every kind of relational expression supports hints.</div> |
| <dl> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Relational expression with set up hints</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getHints--"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>getHints</h4> |
| <pre>com.google.common.collect.ImmutableList<<a href="../../../../../org/apache/calcite/rel/hint/RelHint.html" title="org.apache.calcite.rel.hint中的类">RelHint</a>> getHints()</pre> |
| <div class="block">Returns the hints of this relational expressions as an immutable list.</div> |
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