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 <div class="subTitle">org.apache.calcite.adapter.enumerable</div>
 <h2 title="Interface PhysType" class="title">Interface PhysType</h2>
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 <dl>
 <dt>All Known Implementing Classes:</dt>
 <dd><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysTypeImpl.html" title="class in org.apache.calcite.adapter.enumerable">PhysTypeImpl</a></dd>
 </dl>
 <hr>
 <br>
 <pre>public interface <span class="typeNameLabel">PhysType</span></pre>
 <div class="block">Physical type of a row.

  <p>Consists of the SQL row type (returned by <a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#getRowType--"><code>getRowType()</code></a>), the Java
  type of the row (returned by <a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#getJavaRowType--"><code>getJavaRowType()</code></a>), and methods to
  generate expressions to access fields, generate records, and so forth.
  Together, the records encapsulate how the logical type maps onto the physical
  type.</p></div>
 </li>
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 <h3>Method Summary</h3>
 <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
 <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t6" class="tableTab"><span><a href="javascript:show(32);">Deprecated Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
 <tr>
 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colLast" scope="col">Method and Description</th>
 </tr>
 <tr id="i0" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#accessors-org.apache.calcite.linq4j.tree.Expression-java.util.List-">accessors</a></span>(<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;parameter,
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 <tr id="i1" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#comparer--">comparer</a></span>()</code>
 <div class="block">Returns a expression that yields a comparer, or null if this type
  is comparable.</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#component-int-">component</a></span>(int&nbsp;field)</code>
 <div class="block">Returns the physical type of a given field's component type.</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#convertTo-org.apache.calcite.linq4j.tree.Expression-org.apache.calcite.adapter.enumerable.JavaRowFormat-">convertTo</a></span>(<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;expression,
          <a href="../../../../../org/apache/calcite/adapter/enumerable/JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a>&nbsp;targetFormat)</code>
 <div class="block">Converts an enumerable of this physical type to an enumerable that uses
  the <code>targetFormat</code> for representing its rows.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#convertTo-org.apache.calcite.linq4j.tree.Expression-org.apache.calcite.adapter.enumerable.PhysType-">convertTo</a></span>(<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;expression,
          <a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a>&nbsp;targetPhysType)</code>
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
 <div class="block"><span class="deprecationComment">Use <a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#convertTo-org.apache.calcite.linq4j.tree.Expression-org.apache.calcite.adapter.enumerable.JavaRowFormat-"><code>convertTo(Expression, JavaRowFormat)</code></a>.
  The use of PhysType as a second parameter is misleading since only the row
  format of the expression is affected by the conversion. Moreover it requires
  to have at hand a PhysType object which is not really necessary for achieving
  the desired result.</span></div>
 </div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#field-int-">field</a></span>(int&nbsp;ordinal)</code>
 <div class="block">Returns the physical type of a field.</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#fieldClass-int-">fieldClass</a></span>(int&nbsp;field)</code>
 <div class="block">Returns the Java class of the field with the given ordinal.</div>
 </td>
 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#fieldNullable-int-">fieldNullable</a></span>(int&nbsp;index)</code>
 <div class="block">Returns whether a given field allows null values.</div>
 </td>
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 <tr id="i8" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#fieldReference-org.apache.calcite.linq4j.tree.Expression-int-">fieldReference</a></span>(<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;expression,
               int&nbsp;field)</code>
 <div class="block">Generates a reference to a given field in an expression.</div>
 </td>
 </tr>
 <tr id="i9" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#fieldReference-org.apache.calcite.linq4j.tree.Expression-int-java.lang.reflect.Type-">fieldReference</a></span>(<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;expression,
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 <div class="block">Generates a reference to a given field in an expression.</div>
 </td>
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 <tr id="i10" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#generateAccessor-java.util.List-">generateAccessor</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;fields)</code>
 <div class="block">Generates an accessor function for a given list of fields.</div>
 </td>
 </tr>
 <tr id="i11" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/util/Pair.html" title="class in org.apache.calcite.util">Pair</a>&lt;<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>,<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#generateCollationKey-java.util.List-">generateCollationKey</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/calcite/rel/RelFieldCollation.html" title="class in org.apache.calcite.rel">RelFieldCollation</a>&gt;&nbsp;collations)</code>
 <div class="block">Returns a lambda to create a collation key and a comparator.</div>
 </td>
 </tr>
 <tr id="i12" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#generateComparator-org.apache.calcite.rel.RelCollation-">generateComparator</a></span>(<a href="../../../../../org/apache/calcite/rel/RelCollation.html" title="interface in org.apache.calcite.rel">RelCollation</a>&nbsp;collation)</code>
 <div class="block">Returns a comparator.</div>
 </td>
 </tr>
 <tr id="i13" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#generateSelector-org.apache.calcite.linq4j.tree.ParameterExpression-java.util.List-">generateSelector</a></span>(<a href="../../../../../org/apache/calcite/linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a>&nbsp;parameter,
                 <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;fields)</code>
 <div class="block">Generates a selector for the given fields from an expression, with the
  default row format.</div>
 </td>
 </tr>
 <tr id="i14" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#generateSelector-org.apache.calcite.linq4j.tree.ParameterExpression-java.util.List-org.apache.calcite.adapter.enumerable.JavaRowFormat-">generateSelector</a></span>(<a href="../../../../../org/apache/calcite/linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a>&nbsp;parameter,
                 <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;fields,
                 <a href="../../../../../org/apache/calcite/adapter/enumerable/JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a>&nbsp;targetFormat)</code>
 <div class="block">Generates a lambda expression that is a selector for the given fields from
  an expression.</div>
 </td>
 </tr>
 <tr id="i15" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td>
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                 <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;usedFields,
                 <a href="../../../../../org/apache/calcite/adapter/enumerable/JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a>&nbsp;targetFormat)</code>
 <div class="block">Generates a lambda expression that is a selector for the given fields from
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 </td>
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 <tr id="i16" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/adapter/enumerable/JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#getFormat--">getFormat</a></span>()</code>
 <div class="block">Returns the format.</div>
 </td>
 </tr>
 <tr id="i17" class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#getJavaFieldType-int-">getJavaFieldType</a></span>(int&nbsp;field)</code>
 <div class="block">Returns the Java class that is used to store the field with the given
  ordinal.</div>
 </td>
 </tr>
 <tr id="i18" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#getJavaRowType--">getJavaRowType</a></span>()</code>
 <div class="block">Returns the Java type (often a Class) that represents a row.</div>
 </td>
 </tr>
 <tr id="i19" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#getRowType--">getRowType</a></span>()</code>
 <div class="block">Returns the SQL row type.</div>
 </td>
 </tr>
 <tr id="i20" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a></code></td>
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 <tr id="i21" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a></code></td>
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 <tr id="i22" class="altColor">
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 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#record-java.util.List-">record</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&gt;&nbsp;expressions)</code>
 <div class="block">Generates an expression that creates a record for a row, initializing
  its fields with the given expressions.</div>
 </td>
 </tr>
 <tr id="i24" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/util/Pair.html" title="class in org.apache.calcite.util">Pair</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&gt;&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#selector-org.apache.calcite.linq4j.tree.ParameterExpression-java.util.List-org.apache.calcite.adapter.enumerable.JavaRowFormat-">selector</a></span>(<a href="../../../../../org/apache/calcite/linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a>&nbsp;parameter,
         <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;fields,
         <a href="../../../../../org/apache/calcite/adapter/enumerable/JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a>&nbsp;targetFormat)</code>
 <div class="block">Generates a selector for the given fields from an expression.</div>
 </td>
 </tr>
 </table>
 </li>
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 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a>&nbsp;getJavaRowType()</pre>
 <div class="block">Returns the Java type (often a Class) that represents a row. For
  example, in one row format, always returns <code>Object[].class</code>.</div>
 </li>
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 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a>&nbsp;getJavaFieldType(int&nbsp;field)</pre>
 <div class="block">Returns the Java class that is used to store the field with the given
  ordinal.

  <p>For instance, when the java row type is <code>Object[]</code>, the java
  field type is <code>Object</code> even if the field is not nullable.</p></div>
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 <pre><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a>&nbsp;field(int&nbsp;ordinal)</pre>
 <div class="block">Returns the physical type of a field.</div>
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 <pre><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a>&nbsp;component(int&nbsp;field)</pre>
 <div class="block">Returns the physical type of a given field's component type.</div>
 </li>
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 <pre><a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;getRowType()</pre>
 <div class="block">Returns the SQL row type.</div>
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 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&nbsp;fieldClass(int&nbsp;field)</pre>
 <div class="block">Returns the Java class of the field with the given ordinal.</div>
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 <pre>boolean&nbsp;fieldNullable(int&nbsp;index)</pre>
 <div class="block">Returns whether a given field allows null values.</div>
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 <pre><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;fieldReference(<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;expression,
                           int&nbsp;field)</pre>
 <div class="block">Generates a reference to a given field in an expression.

  <p>For example given <code>expression=employee</code> and <code>field=2</code>,
  generates

  <blockquote><pre><code> employee.deptno</code></pre></blockquote></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>expression</code> - Expression</dd>
 <dd><code>field</code> - Ordinal of field</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Expression to access the field of the expression</dd>
 </dl>
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                           int&nbsp;field,
                           <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a>&nbsp;storageType)</pre>
 <div class="block">Generates a reference to a given field in an expression.

  <p>This method optimizes for the target storage type (i.e. avoids
  casts).

  <p>For example given <code>expression=employee</code> and <code>field=2</code>,
  generates

  <blockquote><pre><code> employee.deptno</code></pre></blockquote></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>expression</code> - Expression</dd>
 <dd><code>field</code> - Ordinal of field</dd>
 <dd><code>storageType</code> - optional hint for storage class</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Expression to access the field of the expression</dd>
 </dl>
 </li>
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 <pre><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;generateAccessor(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;fields)</pre>
 <div class="block">Generates an accessor function for a given list of fields.  The resulting
  object is a <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util"><code>List</code></a> (implementing <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang"><code>Object.hashCode()</code></a> and
  <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang"><code>Object.equals(Object)</code></a> per that interface) and also implements
  <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang"><code>Comparable</code></a>.

  <p>For example:

  <blockquote><pre>
  new Function1&lt;Employee, Object[]&gt; {
     public Object[] apply(Employee v1) {
         return FlatLists.of(v1.&lt;fieldN&gt;, v1.&lt;fieldM&gt;);
     }
  }
  }</pre></blockquote></div>
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 <pre><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;generateSelector(<a href="../../../../../org/apache/calcite/linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a>&nbsp;parameter,
                             <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;fields)</pre>
 <div class="block">Generates a selector for the given fields from an expression, with the
  default row format.</div>
 </li>
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 <pre><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;generateSelector(<a href="../../../../../org/apache/calcite/linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a>&nbsp;parameter,
                             <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;fields,
                             <a href="../../../../../org/apache/calcite/adapter/enumerable/JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a>&nbsp;targetFormat)</pre>
 <div class="block">Generates a lambda expression that is a selector for the given fields from
  an expression.</div>
 </li>
 </ul>
 <a name="generateSelector-org.apache.calcite.linq4j.tree.ParameterExpression-java.util.List-java.util.List-org.apache.calcite.adapter.enumerable.JavaRowFormat-">
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 <h4>generateSelector</h4>
 <pre><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;generateSelector(<a href="../../../../../org/apache/calcite/linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a>&nbsp;parameter,
                             <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;fields,
                             <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;usedFields,
                             <a href="../../../../../org/apache/calcite/adapter/enumerable/JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a>&nbsp;targetFormat)</pre>
 <div class="block">Generates a lambda expression that is a selector for the given fields from
  an expression.

  <p><code>usedFields</code> must be a subset of <code>fields</code>.
  For each field, there is a corresponding indicator field.
  If a field is used, its value is assigned and its indicator is left
  <code>false</code>.
  If a field is not used, its value is not assigned and its indicator is
  set to <code>true</code>;
  This will become a value of 1 when <code>GROUPING(field)</code> is called.</div>
 </li>
 </ul>
 <a name="selector-org.apache.calcite.linq4j.tree.ParameterExpression-java.util.List-org.apache.calcite.adapter.enumerable.JavaRowFormat-">
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 <pre><a href="../../../../../org/apache/calcite/util/Pair.html" title="class in org.apache.calcite.util">Pair</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&gt;&gt;&nbsp;selector(<a href="../../../../../org/apache/calcite/linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a>&nbsp;parameter,
                                      <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;fields,
                                      <a href="../../../../../org/apache/calcite/adapter/enumerable/JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a>&nbsp;targetFormat)</pre>
 <div class="block">Generates a selector for the given fields from an expression.
  Only used by EnumerableWindow.</div>
 </li>
 </ul>
 <a name="project-java.util.List-org.apache.calcite.adapter.enumerable.JavaRowFormat-">
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 <h4>project</h4>
 <pre><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a>&nbsp;project(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;integers,
                  <a href="../../../../../org/apache/calcite/adapter/enumerable/JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a>&nbsp;format)</pre>
 <div class="block">Projects a given collection of fields from this input record, into
  a particular preferred output format. The output format is optimized
  if there are 0 or 1 fields.</div>
 </li>
 </ul>
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 <pre><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a>&nbsp;project(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;integers,
                  boolean&nbsp;indicator,
                  <a href="../../../../../org/apache/calcite/adapter/enumerable/JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a>&nbsp;format)</pre>
 <div class="block">Projects a given collection of fields from this input record, optionally
  with indicator fields, into a particular preferred output format.

  <p>The output format is optimized if there are 0 or 1 fields
  and indicators are disabled.</div>
 </li>
 </ul>
 <a name="generateCollationKey-java.util.List-">
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 <h4>generateCollationKey</h4>
 <pre><a href="../../../../../org/apache/calcite/util/Pair.html" title="class in org.apache.calcite.util">Pair</a>&lt;<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>,<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&gt;&nbsp;generateCollationKey(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/calcite/rel/RelFieldCollation.html" title="class in org.apache.calcite.rel">RelFieldCollation</a>&gt;&nbsp;collations)</pre>
 <div class="block">Returns a lambda to create a collation key and a comparator. The
  comparator is sometimes null.</div>
 </li>
 </ul>
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 <pre><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;generateComparator(<a href="../../../../../org/apache/calcite/rel/RelCollation.html" title="interface in org.apache.calcite.rel">RelCollation</a>&nbsp;collation)</pre>
 <div class="block">Returns a comparator. Unlike the comparator returned by
  <a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#generateCollationKey-java.util.List-"><code>generateCollationKey(java.util.List)</code></a>, this comparator acts on the
  whole element.</div>
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 <pre><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;comparer()</pre>
 <div class="block">Returns a expression that yields a comparer, or null if this type
  is comparable.</div>
 </li>
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 <pre><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;record(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&gt;&nbsp;expressions)</pre>
 <div class="block">Generates an expression that creates a record for a row, initializing
  its fields with the given expressions. There must be one expression per
  field.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>expressions</code> - Expression to initialize each field</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Expression to create a row</dd>
 </dl>
 </li>
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 <h4>getFormat</h4>
 <pre><a href="../../../../../org/apache/calcite/adapter/enumerable/JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a>&nbsp;getFormat()</pre>
 <div class="block">Returns the format.</div>
 </li>
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 <h4>accessors</h4>
 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&gt;&nbsp;accessors(<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;parameter,
                            <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;argList)</pre>
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 <pre><a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a>&nbsp;makeNullable(boolean&nbsp;nullable)</pre>
 <div class="block">Returns a copy of this type that allows nulls if <code>nullable</code> is
  true.</div>
 </li>
 </ul>
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 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
 <a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;convertTo(<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;expression,
                                  <a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a>&nbsp;targetPhysType)</pre>
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Use <a href="../../../../../org/apache/calcite/adapter/enumerable/PhysType.html#convertTo-org.apache.calcite.linq4j.tree.Expression-org.apache.calcite.adapter.enumerable.JavaRowFormat-"><code>convertTo(Expression, JavaRowFormat)</code></a>.
  The use of PhysType as a second parameter is misleading since only the row
  format of the expression is affected by the conversion. Moreover it requires
  to have at hand a PhysType object which is not really necessary for achieving
  the desired result.</span></div>
 <div class="block">Converts an enumerable of this physical type to an enumerable that uses a
  given physical type for its rows.</div>
 </li>
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 <a name="convertTo-org.apache.calcite.linq4j.tree.Expression-org.apache.calcite.adapter.enumerable.JavaRowFormat-">
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 <h4>convertTo</h4>
 <pre><a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;convertTo(<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;expression,
                      <a href="../../../../../org/apache/calcite/adapter/enumerable/JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a>&nbsp;targetFormat)</pre>
 <div class="block">Converts an enumerable of this physical type to an enumerable that uses
  the <code>targetFormat</code> for representing its rows.</div>
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