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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.adapter.clone</a></div>
<h2 title="Class ColumnLoader" class="title">Class ColumnLoader&lt;T&gt;</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<li>org.apache.calcite.adapter.clone.ColumnLoader&lt;T&gt;</li>
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<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>T</code> - Element type of source table</dd>
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<pre>class <span class="typeNameLabel">ColumnLoader&lt;T&gt;</span>
extends java.lang.Object</pre>
<div class="block">Column loader.</div>
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<td class="colFirst"><code>private static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="ColumnLoader.Kev.html" title="class in org.apache.calcite.adapter.clone">ColumnLoader.Kev</a></span></code></th>
<td class="colLast">
<div class="block">Key-value pair.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="ColumnLoader.ValueSet.html" title="class in org.apache.calcite.adapter.clone">ColumnLoader.ValueSet</a></span></code></th>
<td class="colLast">
<div class="block">Set of values of a column, created during the load process, and converted
to a serializable (and more compact) form before load completes.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
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<tr class="altColor">
<td class="colFirst"><code>(package private) static int[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#INT_B">INT_B</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) static int[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#INT_S">INT_S</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.util.List&lt;<a href="ColumnLoader.html" title="type parameter in ColumnLoader">T</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#list">list</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>(package private) static long[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#LONG_B">LONG_B</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) static int[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#LONG_S">LONG_S</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.util.List&lt;<a href="ArrayTable.Column.html" title="class in org.apache.calcite.adapter.clone">ArrayTable.Column</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#representationValues">representationValues</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#sortField">sortField</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="../java/JavaTypeFactory.html" title="interface in org.apache.calcite.adapter.java">JavaTypeFactory</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#typeFactory">typeFactory</a></span></code></th>
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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(org.apache.calcite.adapter.java.JavaTypeFactory,org.apache.calcite.linq4j.Enumerable,org.apache.calcite.rel.type.RelProtoDataType,java.util.List)">ColumnLoader</a></span>&#8203;(<a href="../java/JavaTypeFactory.html" title="interface in org.apache.calcite.adapter.java">JavaTypeFactory</a>&nbsp;typeFactory,
<a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a>&lt;<a href="ColumnLoader.html" title="type parameter in ColumnLoader">T</a>&gt;&nbsp;sourceTable,
<a href="../../rel/type/RelProtoDataType.html" title="interface in org.apache.calcite.rel.type">RelProtoDataType</a>&nbsp;protoRowType,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;repList)</code></th>
<td class="colLast">
<div class="block">Creates a column loader, and performs the load.</div>
</td>
</tr>
</table>
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<td class="colFirst"><code>(package private) static int[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#invert(int%5B%5D)">invert</a></span>&#8203;(int[]&nbsp;targets)</code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>(package private) static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isIdentity(int%5B%5D)">isIdentity</a></span>&#8203;(int[]&nbsp;sources)</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#load(org.apache.calcite.rel.type.RelDataType,java.util.List,int%5B%5D)">load</a></span>&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;elementType,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;repList,
int[]&nbsp;sort)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>(package private) static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#log2(int)">log2</a></span>&#8203;(int&nbsp;v)</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>(package private) static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#log2(long)">log2</a></span>&#8203;(long&nbsp;v)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>(package private) static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nextPowerOf2(int)">nextPowerOf2</a></span>&#8203;(int&nbsp;v)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>(package private) static long</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nextPowerOf2(long)">nextPowerOf2</a></span>&#8203;(long&nbsp;v)</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#size()">size</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>private static java.util.List</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#wrap(org.apache.calcite.avatica.ColumnMetaData.Rep,java.util.List,org.apache.calcite.rel.type.RelDataType)">wrap</a></span>&#8203;(org.apache.calcite.avatica.ColumnMetaData.Rep&nbsp;rep,
java.util.List&nbsp;list,
<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type)</code></th>
<td class="colLast">
<div class="block">Adapt for some types that we represent differently internally than their
JDBC types.</div>
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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>static final&nbsp;int[] INT_B</pre>
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<pre>static final&nbsp;int[] INT_S</pre>
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<pre>static final&nbsp;long[] LONG_B</pre>
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<pre>static final&nbsp;int[] LONG_S</pre>
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<h4>list</h4>
<pre>public final&nbsp;java.util.List&lt;<a href="ColumnLoader.html" title="type parameter in ColumnLoader">T</a>&gt; list</pre>
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<h4>representationValues</h4>
<pre>public final&nbsp;java.util.List&lt;<a href="ArrayTable.Column.html" title="class in org.apache.calcite.adapter.clone">ArrayTable.Column</a>&gt; representationValues</pre>
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<h4>typeFactory</h4>
<pre>private final&nbsp;<a href="../java/JavaTypeFactory.html" title="interface in org.apache.calcite.adapter.java">JavaTypeFactory</a> typeFactory</pre>
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<h4>sortField</h4>
<pre>public final&nbsp;int sortField</pre>
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<h4>ColumnLoader</h4>
<pre>ColumnLoader&#8203;(<a href="../java/JavaTypeFactory.html" title="interface in org.apache.calcite.adapter.java">JavaTypeFactory</a>&nbsp;typeFactory,
<a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a>&lt;<a href="ColumnLoader.html" title="type parameter in ColumnLoader">T</a>&gt;&nbsp;sourceTable,
<a href="../../rel/type/RelProtoDataType.html" title="interface in org.apache.calcite.rel.type">RelProtoDataType</a>&nbsp;protoRowType,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;repList)</pre>
<div class="block">Creates a column loader, and performs the load.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>typeFactory</code> - Type factory</dd>
<dd><code>sourceTable</code> - Source data</dd>
<dd><code>protoRowType</code> - Logical row type</dd>
<dd><code>repList</code> - Physical row types, or null if not known</dd>
</dl>
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</li>
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<h4>nextPowerOf2</h4>
<pre class="methodSignature">static&nbsp;int&nbsp;nextPowerOf2&#8203;(int&nbsp;v)</pre>
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<h4>nextPowerOf2</h4>
<pre class="methodSignature">static&nbsp;long&nbsp;nextPowerOf2&#8203;(long&nbsp;v)</pre>
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<h4>log2</h4>
<pre class="methodSignature">static&nbsp;int&nbsp;log2&#8203;(int&nbsp;v)</pre>
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<pre class="methodSignature">static&nbsp;int&nbsp;log2&#8203;(long&nbsp;v)</pre>
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<h4>invert</h4>
<pre class="methodSignature">static&nbsp;int[]&nbsp;invert&#8203;(int[]&nbsp;targets)</pre>
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<h4>isIdentity</h4>
<pre class="methodSignature">static&nbsp;boolean&nbsp;isIdentity&#8203;(int[]&nbsp;sources)</pre>
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<a id="size()">
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<h4>size</h4>
<pre class="methodSignature">public&nbsp;int&nbsp;size()</pre>
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<a id="load(org.apache.calcite.rel.type.RelDataType,java.util.List,int[])">
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<h4>load</h4>
<pre class="methodSignature">private&nbsp;void&nbsp;load&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;elementType,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;repList,
int[]&nbsp;sort)</pre>
</li>
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<a id="wrap(org.apache.calcite.avatica.ColumnMetaData.Rep,java.util.List,org.apache.calcite.rel.type.RelDataType)">
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<h4>wrap</h4>
<pre class="methodSignature">private static&nbsp;java.util.List&nbsp;wrap&#8203;(org.apache.calcite.avatica.ColumnMetaData.Rep&nbsp;rep,
java.util.List&nbsp;list,
<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type)</pre>
<div class="block">Adapt for some types that we represent differently internally than their
JDBC types. <code>Timestamp</code> values that are not null are
converted to <code>long</code>, but nullable timestamps are acquired using
<code>ResultSet.getObject(int)</code> and therefore the Timestamp
value needs to be converted to a <code>Long</code>. Similarly
<code>Date</code> and <code>Time</code> values to
<code>Integer</code>.</div>
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