| <!DOCTYPE HTML> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc (17) --> |
| <title>SqlTypeTransforms (Apache Calcite API)</title> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <meta name="description" content="declaration: package: org.apache.calcite.sql.type, class: SqlTypeTransforms"> |
| <meta name="generator" content="javadoc/ClassWriterImpl"> |
| <link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style"> |
| <link rel="stylesheet" type="text/css" href="../../../../../script-dir/jquery-ui.min.css" title="Style"> |
| <link rel="stylesheet" type="text/css" href="../../../../../jquery-ui.overrides.css" title="Style"> |
| <script type="text/javascript" src="../../../../../script.js"></script> |
| <script type="text/javascript" src="../../../../../script-dir/jquery-3.5.1.min.js"></script> |
| <script type="text/javascript" src="../../../../../script-dir/jquery-ui.min.js"></script> |
| </head> |
| <body class="class-declaration-page"> |
| <script type="text/javascript">var pathtoroot = "../../../../../"; |
| loadScripts(document, 'script');</script> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| <div class="flex-box"> |
| <header role="banner" class="flex-header"> |
| <nav role="navigation"> |
| <!-- ========= START OF TOP NAVBAR ======= --> |
| <div class="top-nav" id="navbar-top"> |
| <div class="skip-nav"><a href="#skip-navbar-top" title="Skip navigation links">Skip navigation links</a></div> |
| <div class="about-language"><b>Apache Calcite</b></div> |
| <ul id="navbar-top-firstrow" class="nav-list" title="Navigation"> |
| <li><a href="../../../../../index.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="nav-bar-cell1-rev">Class</li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../help-doc.html#class">Help</a></li> |
| </ul> |
| </div> |
| <div class="sub-nav"> |
| <div> |
| <ul class="sub-nav-list"> |
| <li>Summary: </li> |
| <li>Nested | </li> |
| <li><a href="#field-summary">Field</a> | </li> |
| <li><a href="#constructor-summary">Constr</a> | </li> |
| <li><a href="#method-summary">Method</a></li> |
| </ul> |
| <ul class="sub-nav-list"> |
| <li>Detail: </li> |
| <li><a href="#field-detail">Field</a> | </li> |
| <li><a href="#constructor-detail">Constr</a> | </li> |
| <li>Method</li> |
| </ul> |
| </div> |
| <div class="nav-list-search"><label for="search-input">SEARCH:</label> |
| <input type="text" id="search-input" value="search" disabled="disabled"> |
| <input type="reset" id="reset-button" value="reset" disabled="disabled"> |
| </div> |
| </div> |
| <!-- ========= END OF TOP NAVBAR ========= --> |
| <span class="skip-nav" id="skip-navbar-top"></span></nav> |
| </header> |
| <div class="flex-content"> |
| <main role="main"> |
| <!-- ======== START OF CLASS DATA ======== --> |
| <div class="header"> |
| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.calcite.sql.type</a></div> |
| <h1 title="Class SqlTypeTransforms" class="title">Class SqlTypeTransforms</h1> |
| </div> |
| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a> |
| <div class="inheritance">org.apache.calcite.sql.type.SqlTypeTransforms</div> |
| </div> |
| <section class="class-description" id="class-description"> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public abstract class </span><span class="element-name type-name-label">SqlTypeTransforms</span> |
| <span class="extends-implements">extends <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></span></div> |
| <div class="block">SqlTypeTransforms defines a number of reusable instances of |
| <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type"><code>SqlTypeTransform</code></a>. |
| |
| <p>NOTE: avoid anonymous inner classes here except for unique, |
| non-generalizable strategies; anything else belongs in a reusable top-level |
| class. If you find yourself copying and pasting an existing strategy's |
| anonymous inner class, you're making a mistake.</div> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- =========== FIELD SUMMARY =========== --> |
| <li> |
| <section class="field-summary" id="field-summary"> |
| <h2>Field Summary</h2> |
| <div class="caption"><span>Fields</span></div> |
| <div class="summary-table three-column-summary"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Field</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second even-row-color"><code><a href="#FORCE_NULLABLE" class="member-name-link">FORCE_NULLABLE</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Parameter type-inference transform strategy where a derived type is |
| transformed into the same type with nulls allowed.</div> |
| </div> |
| <div class="col-first odd-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second odd-row-color"><code><a href="#FROM_MEASURE" class="member-name-link">FROM_MEASURE</a></code></div> |
| <div class="col-last odd-row-color"> |
| <div class="block">Parameter type-inference transform that transforms <code>MEASURE<T></code> to |
| <code>T</code> for some type T.</div> |
| </div> |
| <div class="col-first even-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second even-row-color"><code><a href="#LEAST_NULLABLE" class="member-name-link">LEAST_NULLABLE</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Type-inference strategy whereby the result is NOT NULL if any of |
| the arguments is NOT NULL; otherwise the type is unchanged.</div> |
| </div> |
| <div class="col-first odd-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second odd-row-color"><code><a href="#ONLY_COLUMN" class="member-name-link">ONLY_COLUMN</a></code></div> |
| <div class="col-last odd-row-color"> |
| <div class="block">Parameter type-inference transform strategy where a derived type must be |
| a struct type with precisely one field and the returned type is the type |
| of that field.</div> |
| </div> |
| <div class="col-first even-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second even-row-color"><code><a href="#TO_ARRAY" class="member-name-link">TO_ARRAY</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Parameter type-inference transform strategy that wraps a given type |
| in a array.</div> |
| </div> |
| <div class="col-first odd-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second odd-row-color"><code><a href="#TO_ARRAY_QUERY" class="member-name-link">TO_ARRAY_QUERY</a></code></div> |
| <div class="col-last odd-row-color"> |
| <div class="block">Parameter type-inference transform strategy that wraps a given type in an array or |
| wraps a field of the given type in an array if the given type is struct with one field.</div> |
| </div> |
| <div class="col-first even-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second even-row-color"><code><a href="#TO_MAP" class="member-name-link">TO_MAP</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Parameter type-inference transform strategy that converts a two-field |
| record type to a MAP type.</div> |
| </div> |
| <div class="col-first odd-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second odd-row-color"><code><a href="#TO_MEASURE" class="member-name-link">TO_MEASURE</a></code></div> |
| <div class="col-last odd-row-color"> |
| <div class="block">Parameter type-inference transform that transforms <code>T</code> to |
| <code>MEASURE<T></code> for some type T.</div> |
| </div> |
| <div class="col-first even-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second even-row-color"><code><a href="#TO_MULTISET" class="member-name-link">TO_MULTISET</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Parameter type-inference transform strategy that wraps a given type |
| in a multiset.</div> |
| </div> |
| <div class="col-first odd-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second odd-row-color"><code><a href="#TO_MULTISET_ELEMENT_TYPE" class="member-name-link">TO_MULTISET_ELEMENT_TYPE</a></code></div> |
| <div class="col-last odd-row-color"> |
| <div class="block">Parameter type-inference transform strategy where a derived type must be |
| a multiset type and the returned type is the multiset's element type.</div> |
| </div> |
| <div class="col-first even-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second even-row-color"><code><a href="#TO_MULTISET_QUERY" class="member-name-link">TO_MULTISET_QUERY</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Parameter type-inference transform strategy that wraps a given type in a multiset or |
| wraps a field of the given type in a multiset if the given type is struct with one field.</div> |
| </div> |
| <div class="col-first odd-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second odd-row-color"><code><a href="#TO_NOT_NULLABLE" class="member-name-link">TO_NOT_NULLABLE</a></code></div> |
| <div class="col-last odd-row-color"> |
| <div class="block">Parameter type-inference transform strategy where a derived type is |
| transformed into the same type but not nullable.</div> |
| </div> |
| <div class="col-first even-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second even-row-color"><code><a href="#TO_NULLABLE" class="member-name-link">TO_NULLABLE</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Parameter type-inference transform strategy where a derived type is |
| transformed into the same type but nullable if any of a calls operands is |
| nullable.</div> |
| </div> |
| <div class="col-first odd-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second odd-row-color"><code><a href="#TO_NULLABLE_ALL" class="member-name-link">TO_NULLABLE_ALL</a></code></div> |
| <div class="col-last odd-row-color"> |
| <div class="block">Parameter type-inference transform strategy where a derived type is |
| transformed into the same type, but nullable if and only if all of a call's |
| operands are nullable.</div> |
| </div> |
| <div class="col-first even-row-color"><code>static final <a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></code></div> |
| <div class="col-second even-row-color"><code><a href="#TO_VARYING" class="member-name-link">TO_VARYING</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Type-inference strategy whereby the result type of a call is VARYING the |
| type given.</div> |
| </div> |
| </div> |
| </section> |
| </li> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <li> |
| <section class="constructor-summary" id="constructor-summary"> |
| <h2>Constructor Summary</h2> |
| <div class="caption"><span>Constructors</span></div> |
| <div class="summary-table two-column-summary"> |
| <div class="table-header col-first">Constructor</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E()" class="member-name-link">SqlTypeTransforms</a>()</code></div> |
| <div class="col-last even-row-color"> </div> |
| </div> |
| </section> |
| </li> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <li> |
| <section class="method-summary" id="method-summary"> |
| <h2>Method Summary</h2> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class java.lang.<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <li> |
| <section class="field-details" id="field-detail"> |
| <h2>Field Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="TO_NULLABLE"> |
| <h3>TO_NULLABLE</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">TO_NULLABLE</span></div> |
| <div class="block">Parameter type-inference transform strategy where a derived type is |
| transformed into the same type but nullable if any of a calls operands is |
| nullable.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="TO_NULLABLE_ALL"> |
| <h3>TO_NULLABLE_ALL</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">TO_NULLABLE_ALL</span></div> |
| <div class="block">Parameter type-inference transform strategy where a derived type is |
| transformed into the same type, but nullable if and only if all of a call's |
| operands are nullable.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="TO_NOT_NULLABLE"> |
| <h3>TO_NOT_NULLABLE</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">TO_NOT_NULLABLE</span></div> |
| <div class="block">Parameter type-inference transform strategy where a derived type is |
| transformed into the same type but not nullable.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="FORCE_NULLABLE"> |
| <h3>FORCE_NULLABLE</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">FORCE_NULLABLE</span></div> |
| <div class="block">Parameter type-inference transform strategy where a derived type is |
| transformed into the same type with nulls allowed.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="LEAST_NULLABLE"> |
| <h3>LEAST_NULLABLE</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">LEAST_NULLABLE</span></div> |
| <div class="block">Type-inference strategy whereby the result is NOT NULL if any of |
| the arguments is NOT NULL; otherwise the type is unchanged.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="TO_VARYING"> |
| <h3>TO_VARYING</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">TO_VARYING</span></div> |
| <div class="block">Type-inference strategy whereby the result type of a call is VARYING the |
| type given. The length returned is the same as length of the first |
| argument. Return type will have same nullability as input type |
| nullability. First Arg must be of string type.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="TO_MULTISET_ELEMENT_TYPE"> |
| <h3>TO_MULTISET_ELEMENT_TYPE</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">TO_MULTISET_ELEMENT_TYPE</span></div> |
| <div class="block">Parameter type-inference transform strategy where a derived type must be |
| a multiset type and the returned type is the multiset's element type.</div> |
| <dl class="notes"> |
| <dt>See Also:</dt> |
| <dd> |
| <ul class="see-list-long"> |
| <li><a href="MultisetSqlType.html#getComponentType()"><code>MultisetSqlType.getComponentType()</code></a></li> |
| </ul> |
| </dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="TO_MULTISET"> |
| <h3>TO_MULTISET</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">TO_MULTISET</span></div> |
| <div class="block">Parameter type-inference transform strategy that wraps a given type |
| in a multiset.</div> |
| <dl class="notes"> |
| <dt>See Also:</dt> |
| <dd> |
| <ul class="see-list-long"> |
| <li><a href="../../rel/type/RelDataTypeFactory.html#createMultisetType(org.apache.calcite.rel.type.RelDataType,long)"><code>RelDataTypeFactory.createMultisetType(RelDataType, long)</code></a></li> |
| </ul> |
| </dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="TO_MULTISET_QUERY"> |
| <h3>TO_MULTISET_QUERY</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">TO_MULTISET_QUERY</span></div> |
| <div class="block">Parameter type-inference transform strategy that wraps a given type in a multiset or |
| wraps a field of the given type in a multiset if the given type is struct with one field. |
| It is used when a multiset input is a sub-query.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="TO_ARRAY"> |
| <h3>TO_ARRAY</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">TO_ARRAY</span></div> |
| <div class="block">Parameter type-inference transform strategy that wraps a given type |
| in a array.</div> |
| <dl class="notes"> |
| <dt>See Also:</dt> |
| <dd> |
| <ul class="see-list-long"> |
| <li><a href="../../rel/type/RelDataTypeFactory.html#createArrayType(org.apache.calcite.rel.type.RelDataType,long)"><code>RelDataTypeFactory.createArrayType(RelDataType, long)</code></a></li> |
| </ul> |
| </dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="TO_MEASURE"> |
| <h3>TO_MEASURE</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">TO_MEASURE</span></div> |
| <div class="block">Parameter type-inference transform that transforms <code>T</code> to |
| <code>MEASURE<T></code> for some type T.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="FROM_MEASURE"> |
| <h3>FROM_MEASURE</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">FROM_MEASURE</span></div> |
| <div class="block">Parameter type-inference transform that transforms <code>MEASURE<T></code> to |
| <code>T</code> for some type T. Inverse of <a href="#TO_MEASURE"><code>TO_MEASURE</code></a>.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="TO_ARRAY_QUERY"> |
| <h3>TO_ARRAY_QUERY</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">TO_ARRAY_QUERY</span></div> |
| <div class="block">Parameter type-inference transform strategy that wraps a given type in an array or |
| wraps a field of the given type in an array if the given type is struct with one field. |
| It is used when an array input is a sub-query.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="TO_MAP"> |
| <h3>TO_MAP</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">TO_MAP</span></div> |
| <div class="block">Parameter type-inference transform strategy that converts a two-field |
| record type to a MAP type.</div> |
| <dl class="notes"> |
| <dt>See Also:</dt> |
| <dd> |
| <ul class="see-list-long"> |
| <li><a href="../../rel/type/RelDataTypeFactory.html#createMapType(org.apache.calcite.rel.type.RelDataType,org.apache.calcite.rel.type.RelDataType)"><code>RelDataTypeFactory.createMapType(org.apache.calcite.rel.type.RelDataType, org.apache.calcite.rel.type.RelDataType)</code></a></li> |
| </ul> |
| </dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="ONLY_COLUMN"> |
| <h3>ONLY_COLUMN</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlTypeTransform.html" title="interface in org.apache.calcite.sql.type">SqlTypeTransform</a></span> <span class="element-name">ONLY_COLUMN</span></div> |
| <div class="block">Parameter type-inference transform strategy where a derived type must be |
| a struct type with precisely one field and the returned type is the type |
| of that field.</div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <li> |
| <section class="constructor-details" id="constructor-detail"> |
| <h2>Constructor Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="<init>()"> |
| <h3>SqlTypeTransforms</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="element-name">SqlTypeTransforms</span>()</div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <!-- ========= END OF CLASS DATA ========= --> |
| </main> |
| <footer role="contentinfo"> |
| <hr> |
| <p class="legal-copy"><small>Copyright © 2012-2023 Apache Software Foundation. All Rights Reserved.</small></p> |
| </footer> |
| </div> |
| </div> |
| </body> |
| </html> |
