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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.sql</a></div>
<h2 title="Class SqlCollectionTypeNameSpec" class="title">Class SqlCollectionTypeNameSpec</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<li><a href="SqlTypeNameSpec.html" title="class in org.apache.calcite.sql">org.apache.calcite.sql.SqlTypeNameSpec</a></li>
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<li>org.apache.calcite.sql.SqlCollectionTypeNameSpec</li>
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<pre>public class <span class="typeNameLabel">SqlCollectionTypeNameSpec</span>
extends <a href="SqlTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlTypeNameSpec</a></pre>
<div class="block">A sql type name specification of collection type.
<p>The grammar definition in SQL-2011 IWD 9075-2:201?(E)
6.1 &lt;collection type&gt; is as following:
<blockquote><pre>
&lt;collection type&gt; ::=
&lt;array type&gt;
| &lt;multiset type&gt;
&lt;array type&gt; ::=
&lt;data type&gt; ARRAY
[ &lt;left bracket or trigraph&gt;
&lt;maximum cardinality&gt;
&lt;right bracket or trigraph&gt; ]
&lt;maximum cardinality&gt; ::=
&lt;unsigned integer&gt;
&lt;multiset type&gt; ::=
&lt;data type&gt; MULTISET
</pre></blockquote>
<p>This class is intended to be used in nested collection type, it can be used as the
element type name of <a href="SqlDataTypeSpec.html" title="class in org.apache.calcite.sql"><code>SqlDataTypeSpec</code></a>. i.e. "int array array" or "int array multiset".
For simple collection type like "int array", <a href="SqlBasicTypeNameSpec.html" title="class in org.apache.calcite.sql"><code>SqlBasicTypeNameSpec</code></a> is descriptive enough.</div>
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<td class="colFirst"><code>private <a href="type/SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#collectionTypeName">collectionTypeName</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>private <a href="SqlTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlTypeNameSpec</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#elementTypeName">elementTypeName</a></span></code></th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.sql.SqlTypeNameSpec,org.apache.calcite.sql.type.SqlTypeName,org.apache.calcite.sql.parser.SqlParserPos)">SqlCollectionTypeNameSpec</a></span>&#8203;(<a href="SqlTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlTypeNameSpec</a>&nbsp;elementTypeName,
<a href="type/SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;collectionTypeName,
<a href="parser/SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a>&nbsp;pos)</code></th>
<td class="colLast">
<div class="block">Creates a <code>SqlCollectionTypeNameSpec</code>.</div>
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<td class="colFirst"><code>private <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="#createCollectionType(org.apache.calcite.rel.type.RelDataType,org.apache.calcite.rel.type.RelDataTypeFactory)">createCollectionType</a></span>&#8203;(<a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;elementType,
<a href="../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a>&nbsp;typeFactory)</code></th>
<td class="colLast">
<div class="block">Create collection data type.</div>
</td>
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<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="#deriveType(org.apache.calcite.sql.validate.SqlValidator)">deriveType</a></span>&#8203;(<a href="validate/SqlValidator.html" title="interface in org.apache.calcite.sql.validate">SqlValidator</a>&nbsp;validator)</code></th>
<td class="colLast">
<div class="block">Derive type from this SqlTypeNameSpec.</div>
</td>
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<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#equalsDeep(org.apache.calcite.sql.SqlTypeNameSpec,org.apache.calcite.util.Litmus)">equalsDeep</a></span>&#8203;(<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></th>
<td class="colLast">
<div class="block">Returns whether this spec is structurally equivalent to another spec.</div>
</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="SqlTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlTypeNameSpec</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getElementTypeName()">getElementTypeName</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#unparse(org.apache.calcite.sql.SqlWriter,int,int)">unparse</a></span>&#8203;(<a href="SqlWriter.html" title="interface in org.apache.calcite.sql">SqlWriter</a>&nbsp;writer,
int&nbsp;leftPrec,
int&nbsp;rightPrec)</code></th>
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<div class="block">Writes a SQL representation of this spec to a writer.</div>
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<h3>Methods inherited from class&nbsp;org.apache.calcite.sql.<a href="SqlTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlTypeNameSpec</a></h3>
<code><a href="SqlTypeNameSpec.html#getParserPos()">getParserPos</a>, <a href="SqlTypeNameSpec.html#getTypeName()">getTypeName</a></code></li>
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<h4>elementTypeName</h4>
<pre>private final&nbsp;<a href="SqlTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlTypeNameSpec</a> elementTypeName</pre>
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<h4>collectionTypeName</h4>
<pre>private final&nbsp;<a href="type/SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a> collectionTypeName</pre>
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<h4>SqlCollectionTypeNameSpec</h4>
<pre>public&nbsp;SqlCollectionTypeNameSpec&#8203;(<a href="SqlTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlTypeNameSpec</a>&nbsp;elementTypeName,
<a href="type/SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;collectionTypeName,
<a href="parser/SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a>&nbsp;pos)</pre>
<div class="block">Creates a <code>SqlCollectionTypeNameSpec</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>elementTypeName</code> - Type of the collection element.</dd>
<dd><code>collectionTypeName</code> - Collection type name.</dd>
<dd><code>pos</code> - Parser position, must not be null.</dd>
</dl>
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<h4>getElementTypeName</h4>
<pre class="methodSignature">public&nbsp;<a href="SqlTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlTypeNameSpec</a>&nbsp;getElementTypeName()</pre>
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<h4>deriveType</h4>
<pre class="methodSignature">public&nbsp;<a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;deriveType&#8203;(<a href="validate/SqlValidator.html" title="interface in org.apache.calcite.sql.validate">SqlValidator</a>&nbsp;validator)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="SqlTypeNameSpec.html#deriveType(org.apache.calcite.sql.validate.SqlValidator)">SqlTypeNameSpec</a></code></span></div>
<div class="block">Derive type from this SqlTypeNameSpec.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="SqlTypeNameSpec.html#deriveType(org.apache.calcite.sql.validate.SqlValidator)">deriveType</a></code>&nbsp;in class&nbsp;<code><a href="SqlTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlTypeNameSpec</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>validator</code> - The sql validator.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the <code>RelDataType</code> instance, throws exception if we could not
deduce the type.</dd>
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<h4>unparse</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;unparse&#8203;(<a href="SqlWriter.html" title="interface in org.apache.calcite.sql">SqlWriter</a>&nbsp;writer,
int&nbsp;leftPrec,
int&nbsp;rightPrec)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="SqlTypeNameSpec.html#unparse(org.apache.calcite.sql.SqlWriter,int,int)">SqlTypeNameSpec</a></code></span></div>
<div class="block">Writes a SQL representation of this spec to a writer.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="SqlTypeNameSpec.html#unparse(org.apache.calcite.sql.SqlWriter,int,int)">unparse</a></code>&nbsp;in class&nbsp;<code><a href="SqlTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlTypeNameSpec</a></code></dd>
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<h4>equalsDeep</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;equalsDeep&#8203;(<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)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="SqlTypeNameSpec.html#equalsDeep(org.apache.calcite.sql.SqlTypeNameSpec,org.apache.calcite.util.Litmus)">SqlTypeNameSpec</a></code></span></div>
<div class="block">Returns whether this spec is structurally equivalent to another spec.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="SqlTypeNameSpec.html#equalsDeep(org.apache.calcite.sql.SqlTypeNameSpec,org.apache.calcite.util.Litmus)">equalsDeep</a></code>&nbsp;in class&nbsp;<code><a href="SqlTypeNameSpec.html" title="class in org.apache.calcite.sql">SqlTypeNameSpec</a></code></dd>
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<h4>createCollectionType</h4>
<pre class="methodSignature">private&nbsp;<a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;createCollectionType&#8203;(<a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;elementType,
<a href="../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a>&nbsp;typeFactory)</pre>
<div class="block">Create collection data type.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>elementType</code> - Type of the collection element.</dd>
<dd><code>typeFactory</code> - Type factory.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The collection data type, or throw exception if the collection
type name does not belong to <code>SqlTypeName</code> enumerations.</dd>
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