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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.adapter.enumerable</a></div>
<h2 title="Class StrictAggImplementor" class="title">Class StrictAggImplementor</h2>
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<li>java.lang.Object</li>
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<li>org.apache.calcite.adapter.enumerable.StrictAggImplementor</li>
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<dt>All Implemented Interfaces:</dt>
<dd><code><a href="AggImplementor.html" title="interface in org.apache.calcite.adapter.enumerable">AggImplementor</a></code></dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><code><a href="RexImpTable.BitOpImplementor.html" title="class in org.apache.calcite.adapter.enumerable">RexImpTable.BitOpImplementor</a></code>, <code><a href="RexImpTable.CollectImplementor.html" title="class in org.apache.calcite.adapter.enumerable">RexImpTable.CollectImplementor</a></code>, <code><a href="RexImpTable.CountImplementor.html" title="class in org.apache.calcite.adapter.enumerable">RexImpTable.CountImplementor</a></code>, <code><a href="RexImpTable.FusionImplementor.html" title="class in org.apache.calcite.adapter.enumerable">RexImpTable.FusionImplementor</a></code>, <code><a href="RexImpTable.ListaggImplementor.html" title="class in org.apache.calcite.adapter.enumerable">RexImpTable.ListaggImplementor</a></code>, <code><a href="RexImpTable.MinMaxImplementor.html" title="class in org.apache.calcite.adapter.enumerable">RexImpTable.MinMaxImplementor</a></code>, <code><a href="RexImpTable.SumImplementor.html" title="class in org.apache.calcite.adapter.enumerable">RexImpTable.SumImplementor</a></code>, <code><a href="RexImpTable.UserDefinedAggReflectiveImplementor.html" title="class in org.apache.calcite.adapter.enumerable">RexImpTable.UserDefinedAggReflectiveImplementor</a></code>, <code><a href="StrictWinAggImplementor.html" title="class in org.apache.calcite.adapter.enumerable">StrictWinAggImplementor</a></code></dd>
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<hr>
<pre>public abstract class <span class="typeNameLabel">StrictAggImplementor</span>
extends java.lang.Object
implements <a href="AggImplementor.html" title="interface in org.apache.calcite.adapter.enumerable">AggImplementor</a></pre>
<div class="block">The base implementation of strict aggregate function.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="RexImpTable.CountImplementor.html" title="class in org.apache.calcite.adapter.enumerable"><code>RexImpTable.CountImplementor</code></a>,
<a href="RexImpTable.SumImplementor.html" title="class in org.apache.calcite.adapter.enumerable"><code>RexImpTable.SumImplementor</code></a></dd>
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<th class="colSecond" scope="col">Field</th>
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<td class="colFirst"><code>private boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#needTrackEmptySet">needTrackEmptySet</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>private int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#stateSize">stateSize</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#trackNullsPerRow">trackNullsPerRow</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<th class="colFirst" scope="col">Constructor</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">StrictAggImplementor</a></span>()</code></th>
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<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#accAdvance(org.apache.calcite.adapter.enumerable.AggAddContext,org.apache.calcite.linq4j.tree.Expression,org.apache.calcite.linq4j.tree.Expression)">accAdvance</a></span>&#8203;(<a href="AggAddContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggAddContext</a>&nbsp;add,
<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;acc,
<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;next)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>private boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#anyNullable(java.util.List)">anyNullable</a></span>&#8203;(java.util.List&lt;? extends <a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&gt;&nbsp;types)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>java.util.List&lt;java.lang.reflect.Type&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getNotNullState(org.apache.calcite.adapter.enumerable.AggContext)">getNotNullState</a></span>&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getStateSize()">getStateSize</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>java.util.List&lt;java.lang.reflect.Type&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getStateType(org.apache.calcite.adapter.enumerable.AggContext)">getStateType</a></span>&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info)</code></th>
<td class="colLast">
<div class="block">Returns the types of the intermediate variables used by the aggregate
implementation.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#implementAdd(org.apache.calcite.adapter.enumerable.AggContext,org.apache.calcite.adapter.enumerable.AggAddContext)">implementAdd</a></span>&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info,
<a href="AggAddContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggAddContext</a>&nbsp;add)</code></th>
<td class="colLast">
<div class="block">Updates intermediate values to account for the newly added value.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>protected abstract void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#implementNotNullAdd(org.apache.calcite.adapter.enumerable.AggContext,org.apache.calcite.adapter.enumerable.AggAddContext)">implementNotNullAdd</a></span>&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info,
<a href="AggAddContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggAddContext</a>&nbsp;add)</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#implementNotNullReset(org.apache.calcite.adapter.enumerable.AggContext,org.apache.calcite.adapter.enumerable.AggResetContext)">implementNotNullReset</a></span>&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info,
<a href="AggResetContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggResetContext</a>&nbsp;reset)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>protected <a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#implementNotNullResult(org.apache.calcite.adapter.enumerable.AggContext,org.apache.calcite.adapter.enumerable.AggResultContext)">implementNotNullResult</a></span>&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info,
<a href="AggResultContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggResultContext</a>&nbsp;result)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#implementReset(org.apache.calcite.adapter.enumerable.AggContext,org.apache.calcite.adapter.enumerable.AggResetContext)">implementReset</a></span>&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info,
<a href="AggResetContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggResetContext</a>&nbsp;reset)</code></th>
<td class="colLast">
<div class="block">Implements reset of the intermediate variables to the initial state.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code><a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#implementResult(org.apache.calcite.adapter.enumerable.AggContext,org.apache.calcite.adapter.enumerable.AggResultContext)">implementResult</a></span>&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info,
<a href="AggResultContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggResultContext</a>&nbsp;result)</code></th>
<td class="colLast">
<div class="block">Calculates the resulting value based on the intermediate variables.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>protected boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nonDefaultOnEmptySet(org.apache.calcite.adapter.enumerable.AggContext)">nonDefaultOnEmptySet</a></span>&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info)</code></th>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<pre>private&nbsp;boolean needTrackEmptySet</pre>
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<pre>private&nbsp;boolean trackNullsPerRow</pre>
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<h4>stateSize</h4>
<pre>private&nbsp;int stateSize</pre>
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<h4>StrictAggImplementor</h4>
<pre>public&nbsp;StrictAggImplementor()</pre>
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<pre class="methodSignature">protected&nbsp;boolean&nbsp;nonDefaultOnEmptySet&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info)</pre>
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<h4>getStateSize</h4>
<pre class="methodSignature">protected final&nbsp;int&nbsp;getStateSize()</pre>
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<a id="accAdvance(org.apache.calcite.adapter.enumerable.AggAddContext,org.apache.calcite.linq4j.tree.Expression,org.apache.calcite.linq4j.tree.Expression)">
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<pre class="methodSignature">protected final&nbsp;void&nbsp;accAdvance&#8203;(<a href="AggAddContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggAddContext</a>&nbsp;add,
<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;acc,
<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;next)</pre>
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<a id="getStateType(org.apache.calcite.adapter.enumerable.AggContext)">
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<h4>getStateType</h4>
<pre class="methodSignature">public final&nbsp;java.util.List&lt;java.lang.reflect.Type&gt;&nbsp;getStateType&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="AggImplementor.html#getStateType(org.apache.calcite.adapter.enumerable.AggContext)">AggImplementor</a></code></span></div>
<div class="block">Returns the types of the intermediate variables used by the aggregate
implementation.
<p>For instance, for "concatenate to string" this can be
<code>StringBuilder</code>.
Calcite calls this method before all other <code>implement*</code> methods.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="AggImplementor.html#getStateType(org.apache.calcite.adapter.enumerable.AggContext)">getStateType</a></code>&nbsp;in interface&nbsp;<code><a href="AggImplementor.html" title="interface in org.apache.calcite.adapter.enumerable">AggImplementor</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>info</code> - Aggregate context</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Types of the intermediate variables used by the aggregate
implementation</dd>
</dl>
</li>
</ul>
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<h4>anyNullable</h4>
<pre class="methodSignature">private&nbsp;boolean&nbsp;anyNullable&#8203;(java.util.List&lt;? extends <a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&gt;&nbsp;types)</pre>
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<h4>getNotNullState</h4>
<pre class="methodSignature">public&nbsp;java.util.List&lt;java.lang.reflect.Type&gt;&nbsp;getNotNullState&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info)</pre>
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<h4>implementReset</h4>
<pre class="methodSignature">public final&nbsp;void&nbsp;implementReset&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info,
<a href="AggResetContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggResetContext</a>&nbsp;reset)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="AggImplementor.html#implementReset(org.apache.calcite.adapter.enumerable.AggContext,org.apache.calcite.adapter.enumerable.AggResetContext)">AggImplementor</a></code></span></div>
<div class="block">Implements reset of the intermediate variables to the initial state.
<a href="AggResetContext.html#accumulator()"><code>AggResetContext.accumulator()</code></a> should be used to reference
the state variables.
For instance, to zero the count, use the following code:
<blockquote><code>reset.currentBlock().add(<br>
Expressions.statement(<br>
Expressions.assign(reset.accumulator().get(0),<br>
Expressions.constant(0)));</code></blockquote></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="AggImplementor.html#implementReset(org.apache.calcite.adapter.enumerable.AggContext,org.apache.calcite.adapter.enumerable.AggResetContext)">implementReset</a></code>&nbsp;in interface&nbsp;<code><a href="AggImplementor.html" title="interface in org.apache.calcite.adapter.enumerable">AggImplementor</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>info</code> - Aggregate context</dd>
<dd><code>reset</code> - Reset context</dd>
</dl>
</li>
</ul>
<a id="implementNotNullReset(org.apache.calcite.adapter.enumerable.AggContext,org.apache.calcite.adapter.enumerable.AggResetContext)">
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<h4>implementNotNullReset</h4>
<pre class="methodSignature">protected&nbsp;void&nbsp;implementNotNullReset&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info,
<a href="AggResetContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggResetContext</a>&nbsp;reset)</pre>
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<h4>implementAdd</h4>
<pre class="methodSignature">public final&nbsp;void&nbsp;implementAdd&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info,
<a href="AggAddContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggAddContext</a>&nbsp;add)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="AggImplementor.html#implementAdd(org.apache.calcite.adapter.enumerable.AggContext,org.apache.calcite.adapter.enumerable.AggAddContext)">AggImplementor</a></code></span></div>
<div class="block">Updates intermediate values to account for the newly added value.
<a href="AggResetContext.html#accumulator()"><code>AggResetContext.accumulator()</code></a> should be used to reference
the state variables.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="AggImplementor.html#implementAdd(org.apache.calcite.adapter.enumerable.AggContext,org.apache.calcite.adapter.enumerable.AggAddContext)">implementAdd</a></code>&nbsp;in interface&nbsp;<code><a href="AggImplementor.html" title="interface in org.apache.calcite.adapter.enumerable">AggImplementor</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>info</code> - Aggregate context</dd>
<dd><code>add</code> - Add context</dd>
</dl>
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<h4>implementNotNullAdd</h4>
<pre class="methodSignature">protected abstract&nbsp;void&nbsp;implementNotNullAdd&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info,
<a href="AggAddContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggAddContext</a>&nbsp;add)</pre>
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<h4>implementResult</h4>
<pre class="methodSignature">public final&nbsp;<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;implementResult&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info,
<a href="AggResultContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggResultContext</a>&nbsp;result)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="AggImplementor.html#implementResult(org.apache.calcite.adapter.enumerable.AggContext,org.apache.calcite.adapter.enumerable.AggResultContext)">AggImplementor</a></code></span></div>
<div class="block">Calculates the resulting value based on the intermediate variables.
Note: this method must NOT destroy the intermediate variables as
calcite might reuse the state when calculating sliding aggregates.
<a href="AggResetContext.html#accumulator()"><code>AggResetContext.accumulator()</code></a> should be used to reference
the state variables.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="AggImplementor.html#implementResult(org.apache.calcite.adapter.enumerable.AggContext,org.apache.calcite.adapter.enumerable.AggResultContext)">implementResult</a></code>&nbsp;in interface&nbsp;<code><a href="AggImplementor.html" title="interface in org.apache.calcite.adapter.enumerable">AggImplementor</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>info</code> - Aggregate context</dd>
<dd><code>result</code> - Result context</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Expression that is a result of calculating final value of
the aggregate being implemented</dd>
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<h4>implementNotNullResult</h4>
<pre class="methodSignature">protected&nbsp;<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;implementNotNullResult&#8203;(<a href="AggContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggContext</a>&nbsp;info,
<a href="AggResultContext.html" title="interface in org.apache.calcite.adapter.enumerable">AggResultContext</a>&nbsp;result)</pre>
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