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| <ul class="subNavList"> |
| <li>概要: </li> |
| <li>嵌套 | </li> |
| <li><a href="#fields.inherited.from.class.org.apache.calcite.rel.SingleRel">字段</a> | </li> |
| <li><a href="#constructor.summary">构造器</a> | </li> |
| <li><a href="#method.summary">方法</a></li> |
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| <li><a href="#method.detail">方法</a></li> |
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| <div class="subTitle">org.apache.calcite.rel.core</div> |
| <h2 title="类 Snapshot" class="title">类 Snapshot</h2> |
| </div> |
| <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> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html" title="org.apache.calcite.rel中的类">org.apache.calcite.rel.AbstractRelNode</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../org/apache/calcite/rel/SingleRel.html" title="org.apache.calcite.rel中的类">org.apache.calcite.rel.SingleRel</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.calcite.rel.core.Snapshot</li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <dl> |
| <dt>所有已实现的接口:</dt> |
| <dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Cloneable.html?is-external=true" title="java.lang中的类或接口">Cloneable</a>, <a href="../../../../../org/apache/calcite/plan/RelOptNode.html" title="org.apache.calcite.plan中的接口">RelOptNode</a>, <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a></dd> |
| </dl> |
| <dl> |
| <dt>直接已知子类:</dt> |
| <dd><a href="../../../../../org/apache/calcite/rel/logical/LogicalSnapshot.html" title="org.apache.calcite.rel.logical中的类">LogicalSnapshot</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public abstract class <span class="typeNameLabel">Snapshot</span> |
| extends <a href="../../../../../org/apache/calcite/rel/SingleRel.html" title="org.apache.calcite.rel中的类">SingleRel</a></pre> |
| <div class="block">Relational expression that returns the contents of a relation expression as |
| it was at a given time in the past. |
| |
| <p>For example, if <code>Products</code> is a temporal table, and |
| <a href="../../../../../org/apache/calcite/rel/core/TableScan.html" title="org.apache.calcite.rel.core中的类"><code>TableScan</code></a>(Products) is a relational operator that returns all |
| versions of the contents of the table, then |
| <a href="../../../../../org/apache/calcite/rel/core/Snapshot.html" title="org.apache.calcite.rel.core中的类"><code>Snapshot</code></a>(TableScan(Products)) is a relational operator that only |
| returns the contents whose versions that overlap with the given specific |
| period (i.e. those that started before given period and ended after it).</div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
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| <!-- ======== NESTED CLASS SUMMARY ======== --> |
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| </a> |
| <h3>嵌套类概要</h3> |
| <ul class="blockList"> |
| <li class="blockList"><a name="nested.classes.inherited.from.class.org.apache.calcite.rel.RelNode"> |
| <!-- --> |
| </a> |
| <h3>从接口继承的嵌套类/接口 org.apache.calcite.rel.<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a></h3> |
| <code><a href="../../../../../org/apache/calcite/rel/RelNode.Context.html" title="org.apache.calcite.rel中的接口">RelNode.Context</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| <!-- =========== FIELD SUMMARY =========== --> |
| <ul class="blockList"> |
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| </a> |
| <h3>字段概要</h3> |
| <ul class="blockList"> |
| <li class="blockList"><a name="fields.inherited.from.class.org.apache.calcite.rel.SingleRel"> |
| <!-- --> |
| </a> |
| <h3>从类继承的字段 org.apache.calcite.rel.<a href="../../../../../org/apache/calcite/rel/SingleRel.html" title="org.apache.calcite.rel中的类">SingleRel</a></h3> |
| <code><a href="../../../../../org/apache/calcite/rel/SingleRel.html#input">input</a></code></li> |
| </ul> |
| <ul class="blockList"> |
| <li class="blockList"><a name="fields.inherited.from.class.org.apache.calcite.rel.AbstractRelNode"> |
| <!-- --> |
| </a> |
| <h3>从类继承的字段 org.apache.calcite.rel.<a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html" title="org.apache.calcite.rel中的类">AbstractRelNode</a></h3> |
| <code><a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#digest">digest</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#id">id</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#rowType">rowType</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#traitSet">traitSet</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.summary"> |
| <!-- --> |
| </a> |
| <h3>构造器概要</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="构造器概要表, 列表构造器和解释"> |
| <caption><span>构造器</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">限定符</th> |
| <th class="colLast" scope="col">构造器和说明</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/Snapshot.html#Snapshot-org.apache.calcite.plan.RelOptCluster-org.apache.calcite.plan.RelTraitSet-org.apache.calcite.rel.RelNode-org.apache.calcite.rex.RexNode-">Snapshot</a></span>(<a href="../../../../../org/apache/calcite/plan/RelOptCluster.html" title="org.apache.calcite.plan中的类">RelOptCluster</a> cluster, |
| <a href="../../../../../org/apache/calcite/plan/RelTraitSet.html" title="org.apache.calcite.plan中的类">RelTraitSet</a> traitSet, |
| <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a> input, |
| <a href="../../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> period)</code> |
| <div class="block">Creates a Snapshot.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.summary"> |
| <!-- --> |
| </a> |
| <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="t4" class="tableTab"><span><a href="javascript:show(8);">具体方法</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><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/core/Snapshot.html#accept-org.apache.calcite.rex.RexShuttle-">accept</a></span>(<a href="../../../../../org/apache/calcite/rex/RexShuttle.html" title="org.apache.calcite.rex中的类">RexShuttle</a> shuttle)</code> |
| <div class="block">Accepts a visit from a shuttle.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><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/core/Snapshot.html#copy-org.apache.calcite.plan.RelTraitSet-java.util.List-">copy</a></span>(<a href="../../../../../org/apache/calcite/plan/RelTraitSet.html" title="org.apache.calcite.plan中的类">RelTraitSet</a> traitSet, |
| <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/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>> inputs)</code> |
| <div class="block">Creates a copy of this relational expression, perhaps changing traits and |
| inputs.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>abstract <a href="../../../../../org/apache/calcite/rel/core/Snapshot.html" title="org.apache.calcite.rel.core中的类">Snapshot</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/Snapshot.html#copy-org.apache.calcite.plan.RelTraitSet-org.apache.calcite.rel.RelNode-org.apache.calcite.rex.RexNode-">copy</a></span>(<a href="../../../../../org/apache/calcite/plan/RelTraitSet.html" title="org.apache.calcite.plan中的类">RelTraitSet</a> traitSet, |
| <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a> input, |
| <a href="../../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> period)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/rel/RelWriter.html" title="org.apache.calcite.rel中的接口">RelWriter</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/Snapshot.html#explainTerms-org.apache.calcite.rel.RelWriter-">explainTerms</a></span>(<a href="../../../../../org/apache/calcite/rel/RelWriter.html" title="org.apache.calcite.rel中的接口">RelWriter</a> pw)</code> |
| <div class="block">Describes the inputs and attributes of this relational expression.</div> |
| </td> |
| </tr> |
| <tr id="i4" 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><<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/Snapshot.html#getChildExps--">getChildExps</a></span>()</code> |
| <div class="block">Returns a list of this relational expression's child expressions.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/Snapshot.html#getPeriod--">getPeriod</a></span>()</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/Snapshot.html#isValid-org.apache.calcite.util.Litmus-org.apache.calcite.rel.RelNode.Context-">isValid</a></span>(<a href="../../../../../org/apache/calcite/util/Litmus.html" title="org.apache.calcite.util中的接口">Litmus</a> litmus, |
| <a href="../../../../../org/apache/calcite/rel/RelNode.Context.html" title="org.apache.calcite.rel中的接口">RelNode.Context</a> context)</code> |
| <div class="block">Returns whether this relational expression is valid.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.org.apache.calcite.rel.SingleRel"> |
| <!-- --> |
| </a> |
| <h3>从类继承的方法 org.apache.calcite.rel.<a href="../../../../../org/apache/calcite/rel/SingleRel.html" title="org.apache.calcite.rel中的类">SingleRel</a></h3> |
| <code><a href="../../../../../org/apache/calcite/rel/SingleRel.html#childrenAccept-org.apache.calcite.rel.RelVisitor-">childrenAccept</a>, <a href="../../../../../org/apache/calcite/rel/SingleRel.html#deriveRowType--">deriveRowType</a>, <a href="../../../../../org/apache/calcite/rel/SingleRel.html#estimateRowCount-org.apache.calcite.rel.metadata.RelMetadataQuery-">estimateRowCount</a>, <a href="../../../../../org/apache/calcite/rel/SingleRel.html#getInput--">getInput</a>, <a href="../../../../../org/apache/calcite/rel/SingleRel.html#getInputs--">getInputs</a>, <a href="../../../../../org/apache/calcite/rel/SingleRel.html#replaceInput-int-org.apache.calcite.rel.RelNode-">replaceInput</a></code></li> |
| </ul> |
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| <li class="blockList"><a name="methods.inherited.from.class.org.apache.calcite.rel.AbstractRelNode"> |
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| </a> |
| <h3>从类继承的方法 org.apache.calcite.rel.<a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html" title="org.apache.calcite.rel中的类">AbstractRelNode</a></h3> |
| <code><a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#accept-org.apache.calcite.rel.RelShuttle-">accept</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#collectVariablesSet-java.util.Set-">collectVariablesSet</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#collectVariablesUsed-java.util.Set-">collectVariablesUsed</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#computeDigest--">computeDigest</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#computeSelfCost-org.apache.calcite.plan.RelOptPlanner-">computeSelfCost</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#computeSelfCost-org.apache.calcite.plan.RelOptPlanner-org.apache.calcite.rel.metadata.RelMetadataQuery-">computeSelfCost</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#equals-java.lang.Object-">equals</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#explain-org.apache.calcite.rel.RelWriter-">explain</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getCluster--">getCluster</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getCollationList--">getCollationList</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getConvention--">getConvention</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getCorrelVariable--">getCorrelVariable</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getDescription--">getDescription</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getDigest--">getDigest</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getExpectedInputRowType-int-">getExpectedInputRowType</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getId--">getId</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getInput-int-">getInput</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getQuery--">getQuery</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getRelTypeName--">getRelTypeName</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getRows--">getRows</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getRowType--">getRowType</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getTable--">getTable</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getTraitSet--">getTraitSet</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getVariablesSet--">getVariablesSet</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getVariablesStopped--">getVariablesStopped</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#hashCode--">hashCode</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#isDistinct--">isDistinct</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#isKey-org.apache.calcite.util.ImmutableBitSet-">isKey</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#isValid-boolean-">isValid</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#metadata-java.lang.Class-org.apache.calcite.rel.metadata.RelMetadataQuery-">metadata</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#onRegister-org.apache.calcite.plan.RelOptPlanner-">onRegister</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#recomputeDigest--">recomputeDigest</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#register-org.apache.calcite.plan.RelOptPlanner-">register</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#sole-java.util.List-">sole</a>, <a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#toString--">toString</a></code></li> |
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| <!-- --> |
| </a> |
| <h3>从类继承的方法 java.lang.<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></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="java.lang中的类或接口">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="java.lang中的类或接口">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="java.lang中的类或接口">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="java.lang中的类或接口">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="java.lang中的类或接口">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="java.lang中的类或接口">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| </a> |
| <h3>构造器详细资料</h3> |
| <a name="Snapshot-org.apache.calcite.plan.RelOptCluster-org.apache.calcite.plan.RelTraitSet-org.apache.calcite.rel.RelNode-org.apache.calcite.rex.RexNode-"> |
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| </a> |
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| <h4>Snapshot</h4> |
| <pre>protected Snapshot(<a href="../../../../../org/apache/calcite/plan/RelOptCluster.html" title="org.apache.calcite.plan中的类">RelOptCluster</a> cluster, |
| <a href="../../../../../org/apache/calcite/plan/RelTraitSet.html" title="org.apache.calcite.plan中的类">RelTraitSet</a> traitSet, |
| <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a> input, |
| <a href="../../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> period)</pre> |
| <div class="block">Creates a Snapshot.</div> |
| <dl> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>cluster</code> - Cluster that this relational expression belongs to</dd> |
| <dd><code>traitSet</code> - The traits of this relational expression</dd> |
| <dd><code>input</code> - Input relational expression</dd> |
| <dd><code>period</code> - Timestamp expression which as the table was at the given |
| time in the past</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
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| <h3>方法详细资料</h3> |
| <a name="copy-org.apache.calcite.plan.RelTraitSet-java.util.List-"> |
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| </a> |
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| <h4>copy</h4> |
| <pre>public final <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a> copy(<a href="../../../../../org/apache/calcite/plan/RelTraitSet.html" title="org.apache.calcite.plan中的类">RelTraitSet</a> traitSet, |
| <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/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>> inputs)</pre> |
| <div class="block"><span class="descfrmTypeLabel">从接口复制的说明: <code><a href="../../../../../org/apache/calcite/rel/RelNode.html#copy-org.apache.calcite.plan.RelTraitSet-java.util.List-">RelNode</a></code></span></div> |
| <div class="block">Creates a copy of this relational expression, perhaps changing traits and |
| inputs. |
| |
| <p>Sub-classes with other important attributes are encouraged to create |
| variants of this method with more parameters.</p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/rel/RelNode.html#copy-org.apache.calcite.plan.RelTraitSet-java.util.List-">copy</a></code> 在接口中 <code><a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#copy-org.apache.calcite.plan.RelTraitSet-java.util.List-">copy</a></code> 在类中 <code><a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html" title="org.apache.calcite.rel中的类">AbstractRelNode</a></code></dd> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>traitSet</code> - Trait set</dd> |
| <dd><code>inputs</code> - Inputs</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Copy of this relational expression, substituting traits and |
| inputs</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="copy-org.apache.calcite.plan.RelTraitSet-org.apache.calcite.rel.RelNode-org.apache.calcite.rex.RexNode-"> |
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| </a> |
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| <h4>copy</h4> |
| <pre>public abstract <a href="../../../../../org/apache/calcite/rel/core/Snapshot.html" title="org.apache.calcite.rel.core中的类">Snapshot</a> copy(<a href="../../../../../org/apache/calcite/plan/RelTraitSet.html" title="org.apache.calcite.plan中的类">RelTraitSet</a> traitSet, |
| <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a> input, |
| <a href="../../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> period)</pre> |
| </li> |
| </ul> |
| <a name="getChildExps--"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>getChildExps</h4> |
| <pre>public <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/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>> getChildExps()</pre> |
| <div class="block"><span class="descfrmTypeLabel">从接口复制的说明: <code><a href="../../../../../org/apache/calcite/rel/RelNode.html#getChildExps--">RelNode</a></code></span></div> |
| <div class="block">Returns a list of this relational expression's child expressions. |
| (These are scalar expressions, and so do not include the relational |
| inputs that are returned by <a href="../../../../../org/apache/calcite/rel/RelNode.html#getInputs--"><code>RelNode.getInputs()</code></a>. |
| |
| <p>The caller should treat the list as unmodifiable; typical |
| implementations will return an immutable list. If there are no |
| child expressions, returns an empty list, not <code>null</code>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/rel/RelNode.html#getChildExps--">getChildExps</a></code> 在接口中 <code><a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#getChildExps--">getChildExps</a></code> 在类中 <code><a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html" title="org.apache.calcite.rel中的类">AbstractRelNode</a></code></dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>List of this relational expression's child expressions</dd> |
| <dt><span class="seeLabel">另请参阅:</span></dt> |
| <dd><a href="../../../../../org/apache/calcite/rel/RelNode.html#accept-org.apache.calcite.rex.RexShuttle-"><code>RelNode.accept(org.apache.calcite.rex.RexShuttle)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="accept-org.apache.calcite.rex.RexShuttle-"> |
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| <h4>accept</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a> accept(<a href="../../../../../org/apache/calcite/rex/RexShuttle.html" title="org.apache.calcite.rex中的类">RexShuttle</a> shuttle)</pre> |
| <div class="block"><span class="descfrmTypeLabel">从接口复制的说明: <code><a href="../../../../../org/apache/calcite/rel/RelNode.html#accept-org.apache.calcite.rex.RexShuttle-">RelNode</a></code></span></div> |
| <div class="block">Accepts a visit from a shuttle. If the shuttle updates expression, then |
| a copy of the relation should be created. This new relation might have |
| a different row-type.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/rel/RelNode.html#accept-org.apache.calcite.rex.RexShuttle-">accept</a></code> 在接口中 <code><a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#accept-org.apache.calcite.rex.RexShuttle-">accept</a></code> 在类中 <code><a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html" title="org.apache.calcite.rel中的类">AbstractRelNode</a></code></dd> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>shuttle</code> - Shuttle</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>A copy of this node incorporating changes made by the shuttle to |
| this node's children</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="explainTerms-org.apache.calcite.rel.RelWriter-"> |
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| </a> |
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| <h4>explainTerms</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/rel/RelWriter.html" title="org.apache.calcite.rel中的接口">RelWriter</a> explainTerms(<a href="../../../../../org/apache/calcite/rel/RelWriter.html" title="org.apache.calcite.rel中的接口">RelWriter</a> pw)</pre> |
| <div class="block"><span class="descfrmTypeLabel">从类复制的说明: <code><a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#explainTerms-org.apache.calcite.rel.RelWriter-">AbstractRelNode</a></code></span></div> |
| <div class="block">Describes the inputs and attributes of this relational expression. |
| Each node should call <code>super.explainTerms</code>, then call the |
| <a href="../../../../../org/apache/calcite/rel/RelWriter.html#input-java.lang.String-org.apache.calcite.rel.RelNode-"><code>RelWriter.input(String, RelNode)</code></a> |
| and |
| <a href="../../../../../org/apache/calcite/rel/externalize/RelWriterImpl.html#item-java.lang.String-java.lang.Object-"><code>RelWriterImpl.item(String, Object)</code></a> |
| methods for each input and attribute.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/rel/SingleRel.html#explainTerms-org.apache.calcite.rel.RelWriter-">explainTerms</a></code> 在类中 <code><a href="../../../../../org/apache/calcite/rel/SingleRel.html" title="org.apache.calcite.rel中的类">SingleRel</a></code></dd> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>pw</code> - Plan writer</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Plan writer for fluent-explain pattern</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getPeriod--"> |
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| </a> |
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| <h4>getPeriod</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> getPeriod()</pre> |
| </li> |
| </ul> |
| <a name="isValid-org.apache.calcite.util.Litmus-org.apache.calcite.rel.RelNode.Context-"> |
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| </a> |
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| <h4>isValid</h4> |
| <pre>public boolean isValid(<a href="../../../../../org/apache/calcite/util/Litmus.html" title="org.apache.calcite.util中的接口">Litmus</a> litmus, |
| <a href="../../../../../org/apache/calcite/rel/RelNode.Context.html" title="org.apache.calcite.rel中的接口">RelNode.Context</a> context)</pre> |
| <div class="block"><span class="descfrmTypeLabel">从接口复制的说明: <code><a href="../../../../../org/apache/calcite/rel/RelNode.html#isValid-org.apache.calcite.util.Litmus-org.apache.calcite.rel.RelNode.Context-">RelNode</a></code></span></div> |
| <div class="block">Returns whether this relational expression is valid. |
| |
| <p>If assertions are enabled, this method is typically called with <code> |
| litmus</code> = <code>THROW</code>, as follows: |
| |
| <blockquote> |
| <pre>assert rel.isValid(Litmus.THROW)</pre> |
| </blockquote> |
| |
| <p>This signals that the method can throw an <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AssertionError.html?is-external=true" title="java.lang中的类或接口"><code>AssertionError</code></a> if it |
| is not valid.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/rel/RelNode.html#isValid-org.apache.calcite.util.Litmus-org.apache.calcite.rel.RelNode.Context-">isValid</a></code> 在接口中 <code><a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html#isValid-org.apache.calcite.util.Litmus-org.apache.calcite.rel.RelNode.Context-">isValid</a></code> 在类中 <code><a href="../../../../../org/apache/calcite/rel/AbstractRelNode.html" title="org.apache.calcite.rel中的类">AbstractRelNode</a></code></dd> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>litmus</code> - What to do if invalid</dd> |
| <dd><code>context</code> - Context for validity checking</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Whether relational expression is valid</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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