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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.sql.validate</a></div> |
| <h1 title="Interface SqlValidatorNamespace" class="title">Interface SqlValidatorNamespace</h1> |
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| <div class="contentContainer"> |
| <section class="description"> |
| <dl> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="AliasNamespace.html" title="class in org.apache.calcite.sql.validate">AliasNamespace</a></code>, <code><a href="CollectNamespace.html" title="class in org.apache.calcite.sql.validate">CollectNamespace</a></code>, <code><a href="DelegatingNamespace.html" title="class in org.apache.calcite.sql.validate">DelegatingNamespace</a></code>, <code><a href="IdentifierNamespace.html" title="class in org.apache.calcite.sql.validate">IdentifierNamespace</a></code>, <code><a href="MatchRecognizeNamespace.html" title="class in org.apache.calcite.sql.validate">MatchRecognizeNamespace</a></code>, <code><a href="PivotNamespace.html" title="class in org.apache.calcite.sql.validate">PivotNamespace</a></code>, <code><a href="ProcedureNamespace.html" title="class in org.apache.calcite.sql.validate">ProcedureNamespace</a></code>, <code><a href="SelectNamespace.html" title="class in org.apache.calcite.sql.validate">SelectNamespace</a></code>, <code><a href="SetopNamespace.html" title="class in org.apache.calcite.sql.validate">SetopNamespace</a></code>, <code><a href="SqlValidatorImpl.DmlNamespace.html" title="class in org.apache.calcite.sql.validate">SqlValidatorImpl.DmlNamespace</a></code>, <code><a href="TableConstructorNamespace.html" title="class in org.apache.calcite.sql.validate">TableConstructorNamespace</a></code>, <code><a href="WithNamespace.html" title="class in org.apache.calcite.sql.validate">WithNamespace</a></code></dd> |
| </dl> |
| <hr> |
| <pre>public interface <span class="typeNameLabel">SqlValidatorNamespace</span></pre> |
| <div class="block">A namespace describes the relation returned by a section of a SQL query. |
| |
| <p>For example, in the query <code>SELECT emp.deptno, age FROM emp, |
| dept</code>, the FROM clause forms a namespace consisting of two tables EMP |
| and DEPT, and a row type consisting of the combined columns of those tables. |
| |
| <p>Other examples of namespaces include a table in the from list (the |
| namespace contains the constituent columns) and a sub-query (the namespace |
| contains the columns in the SELECT clause of the sub-query). |
| |
| <p>These various kinds of namespace are implemented by classes |
| <a href="IdentifierNamespace.html" title="class in org.apache.calcite.sql.validate"><code>IdentifierNamespace</code></a> for table names, <a href="SelectNamespace.html" title="class in org.apache.calcite.sql.validate"><code>SelectNamespace</code></a> for |
| SELECT queries, <a href="SetopNamespace.html" title="class in org.apache.calcite.sql.validate"><code>SetopNamespace</code></a> for UNION, EXCEPT and INTERSECT, and |
| so forth. But if you are looking at a SELECT query and call |
| <a href="SqlValidator.html#getNamespace(org.apache.calcite.sql.SqlNode)"><code>SqlValidator.getNamespace(org.apache.calcite.sql.SqlNode)</code></a>, you may |
| not get a SelectNamespace. Why? Because the validator is allowed to wrap |
| namespaces in other objects which implement |
| <a href="SqlValidatorNamespace.html" title="interface in org.apache.calcite.sql.validate"><code>SqlValidatorNamespace</code></a>. Your SelectNamespace will be there somewhere, |
| but might be one or two levels deep. Don't try to cast the namespace or use |
| <code>instanceof</code>; use <a href="#unwrap(java.lang.Class)"><code>unwrap(Class)</code></a> and |
| <a href="#isWrapperFor(java.lang.Class)"><code>isWrapperFor(Class)</code></a> instead.</p></div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="SqlValidator.html" title="interface in org.apache.calcite.sql.validate"><code>SqlValidator</code></a>, |
| <a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate"><code>SqlValidatorScope</code></a></dd> |
| </dl> |
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| <h2>Method Summary</h2> |
| <div class="memberSummary"> |
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| <div id="memberSummary_tabpanel" role="tabpanel"> |
| <table aria-labelledby="t0"> |
| <thead> |
| <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> |
| </thead> |
| <tbody> |
| <tr class="altColor" id="i0"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#fieldExists(java.lang.String)">fieldExists</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> name)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether this namespace has a field of a given name.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i1"> |
| <td class="colFirst"><code><a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getEnclosingNode()">getEnclosingNode</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the parse tree node that at is at the root of this namespace and |
| includes all decorations.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i2"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a><<a href="../../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>,​<a href="SqlMonotonicity.html" title="enum in org.apache.calcite.sql.validate">SqlMonotonicity</a>>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMonotonicExprs()">getMonotonicExprs</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a list of expressions which are monotonic in this namespace.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i3"> |
| <td class="colFirst"><code><a href="SqlMonotonicity.html" title="enum in org.apache.calcite.sql.validate">SqlMonotonicity</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMonotonicity(java.lang.String)">getMonotonicity</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> columnName)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether and how a given column is sorted.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i4"> |
| <td class="colFirst"><code><a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getNode()">getNode</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the parse tree node at the root of this namespace.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i5"> |
| <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 row type of this namespace, which comprises a list of names |
| and types of the output columns.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i6"> |
| <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="#getRowTypeSansSystemColumns()">getRowTypeSansSystemColumns</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the row type of this namespace, sans any system columns.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i7"> |
| <td class="colFirst"><code><a href="SqlValidatorTable.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorTable</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTable()">getTable</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the underlying table, or null if there is none.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i8"> |
| <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="#getType()">getType</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the type of this namespace.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i9"> |
| <td class="colFirst"><code><a href="SqlValidator.html" title="interface in org.apache.calcite.sql.validate">SqlValidator</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getValidator()">getValidator</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the validator.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i10"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isWrapperFor(java.lang.Class)">isWrapperFor</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> clazz)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether this namespace implements a given interface, or wraps a |
| class which does.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i11"> |
| <td class="colFirst"><code><a href="SqlValidatorNamespace.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorNamespace</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#lookupChild(java.lang.String)">lookupChild</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> name)</code></th> |
| <td class="colLast"> |
| <div class="block">Looks up a child namespace of a given name.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i12"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#makeNullable()">makeNullable</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span></div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i13"> |
| <td class="colFirst"><code><a href="SqlValidatorNamespace.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorNamespace</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#resolve()">resolve</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">If this namespace resolves to another namespace, returns that namespace, |
| following links to the end of the chain.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i14"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setType(org.apache.calcite.rel.type.RelDataType)">setType</a></span>​(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> type)</code></th> |
| <td class="colLast"> |
| <div class="block">Sets the type of this namespace.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i15"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#supportsModality(org.apache.calcite.sql.validate.SqlModality)">supportsModality</a></span>​(<a href="SqlModality.html" title="enum in org.apache.calcite.sql.validate">SqlModality</a> modality)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether this namespace is capable of giving results of the desired |
| modality.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i16"> |
| <td class="colFirst"><code><T> T</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#unwrap(java.lang.Class)">unwrap</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><T> clazz)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns this namespace, or a wrapped namespace, cast to a particular |
| class.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i17"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#validate(org.apache.calcite.rel.type.RelDataType)">validate</a></span>​(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> targetRowType)</code></th> |
| <td class="colLast"> |
| <div class="block">Validates this namespace.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="blockList"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li class="blockList"> |
| <section class="methodDetails"><a id="method.detail"> |
| <!-- --> |
| </a> |
| <h2>Method Details</h2> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getValidator()">getValidator</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="SqlValidator.html" title="interface in org.apache.calcite.sql.validate">SqlValidator</a></span> <span class="memberName">getValidator</span>()</div> |
| <div class="block">Returns the validator.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>validator</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getTable()">getTable</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="SqlValidatorTable.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorTable</a></span> <span class="memberName">getTable</span>()</div> |
| <div class="block">Returns the underlying table, or null if there is none.</div> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getRowType()">getRowType</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span> <span class="memberName">getRowType</span>()</div> |
| <div class="block">Returns the row type of this namespace, which comprises a list of names |
| and types of the output columns. If the scope's type has not yet been |
| derived, derives it.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Row type of this namespace, never null, always a struct</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getType()">getType</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span> <span class="memberName">getType</span>()</div> |
| <div class="block">Returns the type of this namespace.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Row type converted to struct</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="setType(org.apache.calcite.rel.type.RelDataType)">setType</a></h3> |
| <div class="memberSignature"><span class="returnType">void</span> <span class="memberName">setType</span>​(<span class="arguments"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> type)</span></div> |
| <div class="block">Sets the type of this namespace. |
| |
| <p>Allows the type for the namespace to be explicitly set, but usually is |
| called during <a href="#validate(org.apache.calcite.rel.type.RelDataType)"><code>validate(RelDataType)</code></a>.</p> |
| |
| <p>Implicitly also sets the row type. If the type is not a struct, then |
| the row type is the type wrapped as a struct with a single column, |
| otherwise the type and row type are the same.</p></div> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getRowTypeSansSystemColumns()">getRowTypeSansSystemColumns</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span> <span class="memberName">getRowTypeSansSystemColumns</span>()</div> |
| <div class="block">Returns the row type of this namespace, sans any system columns.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Row type sans system columns</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="validate(org.apache.calcite.rel.type.RelDataType)">validate</a></h3> |
| <div class="memberSignature"><span class="returnType">void</span> <span class="memberName">validate</span>​(<span class="arguments"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> targetRowType)</span></div> |
| <div class="block">Validates this namespace. |
| |
| <p>If the scope has already been validated, does nothing.</p> |
| |
| <p>Please call <a href="SqlValidatorImpl.html#validateNamespace(org.apache.calcite.sql.validate.SqlValidatorNamespace,org.apache.calcite.rel.type.RelDataType)"><code>SqlValidatorImpl.validateNamespace(org.apache.calcite.sql.validate.SqlValidatorNamespace, org.apache.calcite.rel.type.RelDataType)</code></a> rather than |
| calling this method directly.</p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>targetRowType</code> - Desired row type, must not be null, may be the data |
| type 'unknown'.</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getNode()">getNode</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></span> <span class="memberName">getNode</span>()</div> |
| <div class="block">Returns the parse tree node at the root of this namespace.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>parse tree node; null for <code>TableNamespace</code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getEnclosingNode()">getEnclosingNode</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></span> <span class="memberName">getEnclosingNode</span>()</div> |
| <div class="block">Returns the parse tree node that at is at the root of this namespace and |
| includes all decorations. If there are no decorations, returns the same |
| as <a href="#getNode()"><code>getNode()</code></a>.</div> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="lookupChild(java.lang.String)">lookupChild</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="SqlValidatorNamespace.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorNamespace</a></span> <span class="memberName">lookupChild</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> name)</span></div> |
| <div class="block">Looks up a child namespace of a given name. |
| |
| <p>For example, in the query <code>select e.name from emps as e</code>, |
| <code>e</code> is an <a href="IdentifierNamespace.html" title="class in org.apache.calcite.sql.validate"><code>IdentifierNamespace</code></a> which has a child <code> |
| name</code> which is a <code>FieldNamespace</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - Name of namespace</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Namespace</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="fieldExists(java.lang.String)">fieldExists</a></h3> |
| <div class="memberSignature"><span class="returnType">boolean</span> <span class="memberName">fieldExists</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> name)</span></div> |
| <div class="block">Returns whether this namespace has a field of a given name.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - Field name</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Whether field exists</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getMonotonicExprs()">getMonotonicExprs</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a><<a href="../../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>,​<a href="SqlMonotonicity.html" title="enum in org.apache.calcite.sql.validate">SqlMonotonicity</a>>></span> <span class="memberName">getMonotonicExprs</span>()</div> |
| <div class="block">Returns a list of expressions which are monotonic in this namespace. For |
| example, if the namespace represents a relation ordered by a column |
| called "TIMESTAMP", then the list would contain a |
| <a href="../SqlIdentifier.html" title="class in org.apache.calcite.sql"><code>SqlIdentifier</code></a> called "TIMESTAMP".</div> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getMonotonicity(java.lang.String)">getMonotonicity</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="SqlMonotonicity.html" title="enum in org.apache.calcite.sql.validate">SqlMonotonicity</a></span> <span class="memberName">getMonotonicity</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> columnName)</span></div> |
| <div class="block">Returns whether and how a given column is sorted.</div> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="makeNullable()">makeNullable</a></h3> |
| <div class="memberSignature"><span class="annotations"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang" class="externalLink">@Deprecated</a> |
| </span><span class="returnType">void</span> <span class="memberName">makeNullable</span>()</div> |
| <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div> |
| </section> |
| </li> |
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| <section class="detail"> |
| <h3><a id="unwrap(java.lang.Class)">unwrap</a></h3> |
| <div class="memberSignature"><span class="typeParameters"><T></span> <span class="returnType">T</span> <span class="memberName">unwrap</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><T> clazz)</span></div> |
| <div class="block">Returns this namespace, or a wrapped namespace, cast to a particular |
| class.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>clazz</code> - Desired type</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>This namespace cast to desired type</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/ClassCastException.html?is-external=true" title="class or interface in java.lang" class="externalLink">ClassCastException</a></code> - if no such interface is available</dd> |
| </dl> |
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| <section class="detail"> |
| <h3><a id="isWrapperFor(java.lang.Class)">isWrapperFor</a></h3> |
| <div class="memberSignature"><span class="returnType">boolean</span> <span class="memberName">isWrapperFor</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> clazz)</span></div> |
| <div class="block">Returns whether this namespace implements a given interface, or wraps a |
| class which does.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>clazz</code> - Interface</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Whether namespace implements given interface</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="resolve()">resolve</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="SqlValidatorNamespace.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorNamespace</a></span> <span class="memberName">resolve</span>()</div> |
| <div class="block">If this namespace resolves to another namespace, returns that namespace, |
| following links to the end of the chain. |
| |
| <p>A <code>WITH</code>) clause defines table names that resolve to queries |
| (the body of the with-item). An <a href="IdentifierNamespace.html" title="class in org.apache.calcite.sql.validate"><code>IdentifierNamespace</code></a> typically |
| resolves to a <code>TableNamespace</code>.</p> |
| |
| <p>You must not call this method before <a href="#validate(org.apache.calcite.rel.type.RelDataType)"><code>validate(RelDataType)</code></a> has |
| completed.</p></div> |
| </section> |
| </li> |
| <li class="blockList"> |
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| <h3><a id="supportsModality(org.apache.calcite.sql.validate.SqlModality)">supportsModality</a></h3> |
| <div class="memberSignature"><span class="returnType">boolean</span> <span class="memberName">supportsModality</span>​(<span class="arguments"><a href="SqlModality.html" title="enum in org.apache.calcite.sql.validate">SqlModality</a> modality)</span></div> |
| <div class="block">Returns whether this namespace is capable of giving results of the desired |
| modality. <code>true</code> means streaming, <code>false</code> means relational.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>modality</code> - Modality</dd> |
| </dl> |
| </section> |
| </li> |
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