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<title>SqlTypeNameSpec (Apache Calcite API)</title>
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<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.sql</a></div>
<h1 title="Class SqlTypeNameSpec" class="title">Class SqlTypeNameSpec</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.SqlTypeNameSpec</div>
</div>
<section class="class-description" id="class-description">
<dl class="notes">
<dt>Direct Known Subclasses:</dt>
<dd><code><a href="SqlBasicTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlBasicTypeNameSpec</a></code>, <code><a href="SqlCollectionTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlCollectionTypeNameSpec</a></code>, <code><a href="SqlRowTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlRowTypeNameSpec</a></code>, <code><a href="SqlUserDefinedTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlUserDefinedTypeNameSpec</a></code></dd>
</dl>
<hr>
<div class="type-signature"><span class="modifiers">public abstract class </span><span class="element-name type-name-label">SqlTypeNameSpec</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">A <code>SqlTypeNameSpec</code> is a type name specification that allows user to
customize sql node unparsing and data type deriving.
<p>To customize sql node unparsing, override the method
<a href="#unparse(org.apache.calcite.sql.SqlWriter,int,int)"><code>unparse(SqlWriter, int, int)</code></a>.
<p>To customize data type deriving, override the method
<a href="#deriveType(org.apache.calcite.sql.validate.SqlValidator)"><code>deriveType(SqlValidator)</code></a>.</div>
</section>
<section class="summary">
<ul class="summary-list">
<!-- ======== 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 three-column-summary">
<div class="table-header col-first">Modifier</div>
<div class="table-header col-second">Constructor</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color"><code>protected </code></div>
<div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E(org.apache.calcite.sql.SqlIdentifier,org.apache.calcite.sql.parser.SqlParserPos)" class="member-name-link">SqlTypeNameSpec</a><wbr>(<a href="SqlIdentifier.html" title="class in org.apache.calcite.sql">SqlIdentifier</a>&nbsp;name,
<a href="parser/SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a>&nbsp;pos)</code></div>
<div class="col-last even-row-color">
<div class="block">Creates a <code>SqlTypeNameSpec</code>.</div>
</div>
</div>
</section>
</li>
<!-- ========== METHOD SUMMARY =========== -->
<li>
<section class="method-summary" id="method-summary">
<h2>Method Summary</h2>
<div id="method-summary-table">
<div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab3" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab3', 3)" class="table-tab">Abstract Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div>
<div id="method-summary-table.tabpanel" role="tabpanel">
<div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0">
<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Method</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>abstract <a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#deriveType(org.apache.calcite.sql.validate.SqlValidator)" class="member-name-link">deriveType</a><wbr>(<a href="validate/SqlValidator.html" title="interface in org.apache.calcite.sql.validate">SqlValidator</a>&nbsp;validator)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">
<div class="block">Derive type from this SqlTypeNameSpec.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>abstract boolean</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#equalsDeep(org.apache.calcite.sql.SqlTypeNameSpec,org.apache.calcite.util.Litmus)" class="member-name-link">equalsDeep</a><wbr>(<a href="SqlTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlTypeNameSpec</a>&nbsp;spec,
<a href="../util/Litmus.html" title="interface in org.apache.calcite.util">Litmus</a>&nbsp;litmus)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">
<div class="block">Returns whether this spec is structurally equivalent to another spec.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="parser/SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getParserPos()" class="member-name-link">getParserPos</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="SqlIdentifier.html" title="class in org.apache.calcite.sql">SqlIdentifier</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getTypeName()" class="member-name-link">getTypeName</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>abstract void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#unparse(org.apache.calcite.sql.SqlWriter,int,int)" class="member-name-link">unparse</a><wbr>(<a href="SqlWriter.html" title="interface in org.apache.calcite.sql">SqlWriter</a>&nbsp;writer,
int&nbsp;leftPrec,
int&nbsp;rightPrec)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">
<div class="block">Writes a SQL representation of this spec to a writer.</div>
</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;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">
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<li>
<section class="constructor-details" id="constructor-detail">
<h2>Constructor Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="&lt;init&gt;(org.apache.calcite.sql.SqlIdentifier,org.apache.calcite.sql.parser.SqlParserPos)">
<h3>SqlTypeNameSpec</h3>
<div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="element-name">SqlTypeNameSpec</span><wbr><span class="parameters">(<a href="SqlIdentifier.html" title="class in org.apache.calcite.sql">SqlIdentifier</a>&nbsp;name,
<a href="parser/SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a>&nbsp;pos)</span></div>
<div class="block">Creates a <code>SqlTypeNameSpec</code>.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>name</code> - Name of the type</dd>
<dd><code>pos</code> - Parser position, must not be null</dd>
</dl>
</section>
</li>
</ul>
</section>
</li>
<!-- ============ METHOD DETAIL ========== -->
<li>
<section class="method-details" id="method-detail">
<h2>Method Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="deriveType(org.apache.calcite.sql.validate.SqlValidator)">
<h3>deriveType</h3>
<div class="member-signature"><span class="modifiers">public abstract</span>&nbsp;<span class="return-type"><a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">deriveType</span><wbr><span class="parameters">(<a href="validate/SqlValidator.html" title="interface in org.apache.calcite.sql.validate">SqlValidator</a>&nbsp;validator)</span></div>
<div class="block">Derive type from this SqlTypeNameSpec.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>validator</code> - The sql validator</dd>
<dt>Returns:</dt>
<dd>the <code>RelDataType</code> instance, throws exception if we could not
deduce the type</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="unparse(org.apache.calcite.sql.SqlWriter,int,int)">
<h3>unparse</h3>
<div class="member-signature"><span class="modifiers">public abstract</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">unparse</span><wbr><span class="parameters">(<a href="SqlWriter.html" title="interface in org.apache.calcite.sql">SqlWriter</a>&nbsp;writer,
int&nbsp;leftPrec,
int&nbsp;rightPrec)</span></div>
<div class="block">Writes a SQL representation of this spec to a writer.</div>
</section>
</li>
<li>
<section class="detail" id="equalsDeep(org.apache.calcite.sql.SqlTypeNameSpec,org.apache.calcite.util.Litmus)">
<h3>equalsDeep</h3>
<div class="member-signature"><span class="modifiers">public abstract</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">equalsDeep</span><wbr><span class="parameters">(<a href="SqlTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlTypeNameSpec</a>&nbsp;spec,
<a href="../util/Litmus.html" title="interface in org.apache.calcite.util">Litmus</a>&nbsp;litmus)</span></div>
<div class="block">Returns whether this spec is structurally equivalent to another spec.</div>
</section>
</li>
<li>
<section class="detail" id="getParserPos()">
<h3>getParserPos</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="parser/SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a></span>&nbsp;<span class="element-name">getParserPos</span>()</div>
</section>
</li>
<li>
<section class="detail" id="getTypeName()">
<h3>getTypeName</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="SqlIdentifier.html" title="class in org.apache.calcite.sql">SqlIdentifier</a></span>&nbsp;<span class="element-name">getTypeName</span>()</div>
</section>
</li>
</ul>
</section>
</li>
</ul>
</section>
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