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| <li>Summary: </li> |
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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.adapter.enumerable</a></div> |
| <h2 title="Interface PhysType" class="title">Interface PhysType</h2> |
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| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="PhysTypeImpl.html" title="class in org.apache.calcite.adapter.enumerable">PhysTypeImpl</a></code></dd> |
| </dl> |
| <hr> |
| <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="#getRowType()"><code>getRowType()</code></a>), the Java |
| type of the row (returned by <a href="#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"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span><span id="t6" class="tableTab"><span><a href="javascript:show(32);">Deprecated Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>java.util.List<<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="#accessors(org.apache.calcite.linq4j.tree.Expression,java.util.List)">accessors</a></span>​(<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> parameter, |
| java.util.List<java.lang.Integer> argList)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <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="#comparer()">comparer</a></span>()</code></th> |
| <td class="colLast"> |
| <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="PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#component(int)">component</a></span>​(int field)</code></th> |
| <td class="colLast"> |
| <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="../../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="#convertTo(org.apache.calcite.linq4j.tree.Expression,org.apache.calcite.adapter.enumerable.JavaRowFormat)">convertTo</a></span>​(<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| <a href="JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a> targetFormat)</code></th> |
| <td class="colLast"> |
| <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="../../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="#convertTo(org.apache.calcite.linq4j.tree.Expression,org.apache.calcite.adapter.enumerable.PhysType)">convertTo</a></span>​(<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| <a href="PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a> targetPhysType)</code></th> |
| <td class="colLast"> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="deprecationComment">Use <a href="#convertTo(org.apache.calcite.linq4j.tree.Expression,org.apache.calcite.adapter.enumerable.JavaRowFormat)"><code>convertTo(Expression, JavaRowFormat)</code></a>.</div> |
| </div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#field(int)">field</a></span>​(int ordinal)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the physical type of a field.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>java.lang.Class</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#fieldClass(int)">fieldClass</a></span>​(int field)</code></th> |
| <td class="colLast"> |
| <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> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#fieldNullable(int)">fieldNullable</a></span>​(int index)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether a given field allows null values.</div> |
| </td> |
| </tr> |
| <tr id="i8" 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="#fieldReference(org.apache.calcite.linq4j.tree.Expression,int)">fieldReference</a></span>​(<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| int field)</code></th> |
| <td class="colLast"> |
| <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="../../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="#fieldReference(org.apache.calcite.linq4j.tree.Expression,int,java.lang.reflect.Type)">fieldReference</a></span>​(<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| int field, |
| java.lang.reflect.Type storageType)</code></th> |
| <td class="colLast"> |
| <div class="block">Generates a reference to a given field in an expression.</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="#generateAccessor(java.util.List)">generateAccessor</a></span>​(java.util.List<java.lang.Integer> fields)</code></th> |
| <td class="colLast"> |
| <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="../../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>,​<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="#generateCollationKey(java.util.List)">generateCollationKey</a></span>​(java.util.List<<a href="../../rel/RelFieldCollation.html" title="class in org.apache.calcite.rel">RelFieldCollation</a>> collations)</code></th> |
| <td class="colLast"> |
| <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="../../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="#generateComparator(org.apache.calcite.rel.RelCollation)">generateComparator</a></span>​(<a href="../../rel/RelCollation.html" title="interface in org.apache.calcite.rel">RelCollation</a> collation)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a comparator.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <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="#generateSelector(org.apache.calcite.linq4j.tree.ParameterExpression,java.util.List)">generateSelector</a></span>​(<a href="../../linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a> parameter, |
| java.util.List<java.lang.Integer> fields)</code></th> |
| <td class="colLast"> |
| <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="../../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="#generateSelector(org.apache.calcite.linq4j.tree.ParameterExpression,java.util.List,java.util.List,org.apache.calcite.adapter.enumerable.JavaRowFormat)">generateSelector</a></span>​(<a href="../../linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a> parameter, |
| java.util.List<java.lang.Integer> fields, |
| java.util.List<java.lang.Integer> usedFields, |
| <a href="JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a> targetFormat)</code></th> |
| <td class="colLast"> |
| <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="../../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="#generateSelector(org.apache.calcite.linq4j.tree.ParameterExpression,java.util.List,org.apache.calcite.adapter.enumerable.JavaRowFormat)">generateSelector</a></span>​(<a href="../../linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a> parameter, |
| java.util.List<java.lang.Integer> fields, |
| <a href="JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a> targetFormat)</code></th> |
| <td class="colLast"> |
| <div class="block">Generates a lambda expression that is a selector for the given fields from |
| an expression.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code><a href="JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getFormat()">getFormat</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the format.</div> |
| </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>java.lang.reflect.Type</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getJavaFieldType(int)">getJavaFieldType</a></span>​(int field)</code></th> |
| <td class="colLast"> |
| <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>java.lang.reflect.Type</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getJavaRowType()">getJavaRowType</a></span>()</code></th> |
| <td class="colLast"> |
| <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="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRowType()">getRowType</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the SQL row type.</div> |
| </td> |
| </tr> |
| <tr id="i20" class="altColor"> |
| <td class="colFirst"><code><a href="PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#makeNullable(boolean)">makeNullable</a></span>​(boolean nullable)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a copy of this type that allows nulls if <code>nullable</code> is |
| true.</div> |
| </td> |
| </tr> |
| <tr id="i21" class="rowColor"> |
| <td class="colFirst"><code><a href="PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#project(java.util.List,boolean,org.apache.calcite.adapter.enumerable.JavaRowFormat)">project</a></span>​(java.util.List<java.lang.Integer> integers, |
| boolean indicator, |
| <a href="JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a> format)</code></th> |
| <td class="colLast"> |
| <div class="block">Projects a given collection of fields from this input record, optionally |
| with indicator fields, into a particular preferred output format.</div> |
| </td> |
| </tr> |
| <tr id="i22" class="altColor"> |
| <td class="colFirst"><code><a href="PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#project(java.util.List,org.apache.calcite.adapter.enumerable.JavaRowFormat)">project</a></span>​(java.util.List<java.lang.Integer> integers, |
| <a href="JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a> format)</code></th> |
| <td class="colLast"> |
| <div class="block">Projects a given collection of fields from this input record, into |
| a particular preferred output format.</div> |
| </td> |
| </tr> |
| <tr id="i23" class="rowColor"> |
| <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="#record(java.util.List)">record</a></span>​(java.util.List<<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>> expressions)</code></th> |
| <td class="colLast"> |
| <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="../../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><java.lang.reflect.Type,​java.util.List<<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="#selector(org.apache.calcite.linq4j.tree.ParameterExpression,java.util.List,org.apache.calcite.adapter.enumerable.JavaRowFormat)">selector</a></span>​(<a href="../../linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a> parameter, |
| java.util.List<java.lang.Integer> fields, |
| <a href="JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a> targetFormat)</code></th> |
| <td class="colLast"> |
| <div class="block">Generates a selector for the given fields from an expression.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
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| <!-- ============ METHOD DETAIL ========== --> |
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| </a> |
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| <a id="getJavaRowType()"> |
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| <h4>getJavaRowType</h4> |
| <pre class="methodSignature">java.lang.reflect.Type 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> |
| </ul> |
| <a id="getJavaFieldType(int)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getJavaFieldType</h4> |
| <pre class="methodSignature">java.lang.reflect.Type getJavaFieldType​(int 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> |
| </li> |
| </ul> |
| <a id="field(int)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>field</h4> |
| <pre class="methodSignature"><a href="PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a> field​(int ordinal)</pre> |
| <div class="block">Returns the physical type of a field.</div> |
| </li> |
| </ul> |
| <a id="component(int)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>component</h4> |
| <pre class="methodSignature"><a href="PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a> component​(int field)</pre> |
| <div class="block">Returns the physical type of a given field's component type.</div> |
| </li> |
| </ul> |
| <a id="getRowType()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getRowType</h4> |
| <pre class="methodSignature"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> getRowType()</pre> |
| <div class="block">Returns the SQL row type.</div> |
| </li> |
| </ul> |
| <a id="fieldClass(int)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>fieldClass</h4> |
| <pre class="methodSignature">java.lang.Class fieldClass​(int field)</pre> |
| <div class="block">Returns the Java class of the field with the given ordinal.</div> |
| </li> |
| </ul> |
| <a id="fieldNullable(int)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>fieldNullable</h4> |
| <pre class="methodSignature">boolean fieldNullable​(int index)</pre> |
| <div class="block">Returns whether a given field allows null values.</div> |
| </li> |
| </ul> |
| <a id="fieldReference(org.apache.calcite.linq4j.tree.Expression,int)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>fieldReference</h4> |
| <pre class="methodSignature"><a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> fieldReference​(<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| int 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> |
| </li> |
| </ul> |
| <a id="fieldReference(org.apache.calcite.linq4j.tree.Expression,int,java.lang.reflect.Type)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>fieldReference</h4> |
| <pre class="methodSignature"><a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> fieldReference​(<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| int field, |
| java.lang.reflect.Type 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> |
| </ul> |
| <a id="generateAccessor(java.util.List)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>generateAccessor</h4> |
| <pre class="methodSignature"><a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> generateAccessor​(java.util.List<java.lang.Integer> fields)</pre> |
| <div class="block">Generates an accessor function for a given list of fields. The resulting |
| object is a <code>List</code> (implementing <code>Object.hashCode()</code> and |
| <code>Object.equals(Object)</code> per that interface) and also implements |
| <code>Comparable</code>. |
| |
| <p>For example: |
| |
| <blockquote><pre> |
| new Function1<Employee, Object[]> { |
| public Object[] apply(Employee v1) { |
| return FlatLists.of(v1.<fieldN>, v1.<fieldM>); |
| } |
| } |
| }</pre></blockquote></div> |
| </li> |
| </ul> |
| <a id="generateSelector(org.apache.calcite.linq4j.tree.ParameterExpression,java.util.List)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>generateSelector</h4> |
| <pre class="methodSignature"><a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> generateSelector​(<a href="../../linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a> parameter, |
| java.util.List<java.lang.Integer> fields)</pre> |
| <div class="block">Generates a selector for the given fields from an expression, with the |
| default row format.</div> |
| </li> |
| </ul> |
| <a id="generateSelector(org.apache.calcite.linq4j.tree.ParameterExpression,java.util.List,org.apache.calcite.adapter.enumerable.JavaRowFormat)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>generateSelector</h4> |
| <pre class="methodSignature"><a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> generateSelector​(<a href="../../linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a> parameter, |
| java.util.List<java.lang.Integer> fields, |
| <a href="JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a> targetFormat)</pre> |
| <div class="block">Generates a lambda expression that is a selector for the given fields from |
| an expression.</div> |
| </li> |
| </ul> |
| <a id="generateSelector(org.apache.calcite.linq4j.tree.ParameterExpression,java.util.List,java.util.List,org.apache.calcite.adapter.enumerable.JavaRowFormat)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>generateSelector</h4> |
| <pre class="methodSignature"><a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> generateSelector​(<a href="../../linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a> parameter, |
| java.util.List<java.lang.Integer> fields, |
| java.util.List<java.lang.Integer> usedFields, |
| <a href="JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a> 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 id="selector(org.apache.calcite.linq4j.tree.ParameterExpression,java.util.List,org.apache.calcite.adapter.enumerable.JavaRowFormat)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>selector</h4> |
| <pre class="methodSignature"><a href="../../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><java.lang.reflect.Type,​java.util.List<<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>>> selector​(<a href="../../linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a> parameter, |
| java.util.List<java.lang.Integer> fields, |
| <a href="JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a> targetFormat)</pre> |
| <div class="block">Generates a selector for the given fields from an expression. |
| Only used by EnumerableWindow.</div> |
| </li> |
| </ul> |
| <a id="project(java.util.List,org.apache.calcite.adapter.enumerable.JavaRowFormat)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>project</h4> |
| <pre class="methodSignature"><a href="PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a> project​(java.util.List<java.lang.Integer> integers, |
| <a href="JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a> 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> |
| <a id="project(java.util.List,boolean,org.apache.calcite.adapter.enumerable.JavaRowFormat)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>project</h4> |
| <pre class="methodSignature"><a href="PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a> project​(java.util.List<java.lang.Integer> integers, |
| boolean indicator, |
| <a href="JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a> 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 id="generateCollationKey(java.util.List)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>generateCollationKey</h4> |
| <pre class="methodSignature"><a href="../../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>,​<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>> generateCollationKey​(java.util.List<<a href="../../rel/RelFieldCollation.html" title="class in org.apache.calcite.rel">RelFieldCollation</a>> collations)</pre> |
| <div class="block">Returns a lambda to create a collation key and a comparator. The |
| comparator is sometimes null.</div> |
| </li> |
| </ul> |
| <a id="generateComparator(org.apache.calcite.rel.RelCollation)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>generateComparator</h4> |
| <pre class="methodSignature"><a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> generateComparator​(<a href="../../rel/RelCollation.html" title="interface in org.apache.calcite.rel">RelCollation</a> collation)</pre> |
| <div class="block">Returns a comparator. Unlike the comparator returned by |
| <a href="#generateCollationKey(java.util.List)"><code>generateCollationKey(java.util.List)</code></a>, this comparator acts on the |
| whole element.</div> |
| </li> |
| </ul> |
| <a id="comparer()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>comparer</h4> |
| <pre class="methodSignature"><a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> comparer()</pre> |
| <div class="block">Returns a expression that yields a comparer, or null if this type |
| is comparable.</div> |
| </li> |
| </ul> |
| <a id="record(java.util.List)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>record</h4> |
| <pre class="methodSignature"><a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> record​(java.util.List<<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>> 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> |
| </ul> |
| <a id="getFormat()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getFormat</h4> |
| <pre class="methodSignature"><a href="JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a> getFormat()</pre> |
| <div class="block">Returns the format.</div> |
| </li> |
| </ul> |
| <a id="accessors(org.apache.calcite.linq4j.tree.Expression,java.util.List)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>accessors</h4> |
| <pre class="methodSignature">java.util.List<<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>> accessors​(<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> parameter, |
| java.util.List<java.lang.Integer> argList)</pre> |
| </li> |
| </ul> |
| <a id="makeNullable(boolean)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>makeNullable</h4> |
| <pre class="methodSignature"><a href="PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a> makeNullable​(boolean nullable)</pre> |
| <div class="block">Returns a copy of this type that allows nulls if <code>nullable</code> is |
| true.</div> |
| </li> |
| </ul> |
| <a id="convertTo(org.apache.calcite.linq4j.tree.Expression,org.apache.calcite.adapter.enumerable.PhysType)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>convertTo</h4> |
| <pre class="methodSignature">@Deprecated |
| <a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> convertTo​(<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| <a href="PhysType.html" title="interface in org.apache.calcite.adapter.enumerable">PhysType</a> targetPhysType)</pre> |
| <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="deprecationComment">Use <a href="#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.</div> |
| </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> |
| </ul> |
| <a id="convertTo(org.apache.calcite.linq4j.tree.Expression,org.apache.calcite.adapter.enumerable.JavaRowFormat)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>convertTo</h4> |
| <pre class="methodSignature"><a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> convertTo​(<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> expression, |
| <a href="JavaRowFormat.html" title="enum in org.apache.calcite.adapter.enumerable">JavaRowFormat</a> 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> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
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| </main> |
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| </a> |
| <div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> |
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