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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.adapter.java</a></div>
<h2 title="Class ReflectiveSchema" class="title">Class ReflectiveSchema</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<ul class="inheritance">
<li><a href="../../schema/impl/AbstractSchema.html" title="class in org.apache.calcite.schema.impl">org.apache.calcite.schema.impl.AbstractSchema</a></li>
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<li>org.apache.calcite.adapter.java.ReflectiveSchema</li>
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<dt>All Implemented Interfaces:</dt>
<dd><code><a href="../../schema/Schema.html" title="interface in org.apache.calcite.schema">Schema</a></code></dd>
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<pre>public class <span class="typeNameLabel">ReflectiveSchema</span>
extends <a href="../../schema/impl/AbstractSchema.html" title="class in org.apache.calcite.schema.impl">AbstractSchema</a></pre>
<div class="block">Implementation of <a href="../../schema/Schema.html" title="interface in org.apache.calcite.schema"><code>Schema</code></a> that exposes the
public fields and methods in a Java object.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Class</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="ReflectiveSchema.Factory.html" title="class in org.apache.calcite.adapter.java">ReflectiveSchema.Factory</a></span></code></th>
<td class="colLast">
<div class="block">Factory that creates a schema by instantiating an object and looking at
its public fields.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="ReflectiveSchema.FieldSelector.html" title="class in org.apache.calcite.adapter.java">ReflectiveSchema.FieldSelector</a></span></code></th>
<td class="colLast">
<div class="block">Function that returns an array of a given object's field values.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="ReflectiveSchema.FieldTable.html" title="class in org.apache.calcite.adapter.java">ReflectiveSchema.FieldTable</a>&lt;<a href="ReflectiveSchema.FieldTable.html" title="type parameter in ReflectiveSchema.FieldTable">T</a>&gt;</span></code></th>
<td class="colLast">
<div class="block">Table based on a Java field.</div>
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</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="ReflectiveSchema.MethodTableMacro.html" title="class in org.apache.calcite.adapter.java">ReflectiveSchema.MethodTableMacro</a></span></code></th>
<td class="colLast">
<div class="block">Table macro based on a Java method.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="ReflectiveSchema.ReflectiveTable.html" title="class in org.apache.calcite.adapter.java">ReflectiveSchema.ReflectiveTable</a></span></code></th>
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<div class="block">Table that is implemented by reading from a Java object.</div>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.apache.calcite.schema.<a href="../../schema/Schema.html" title="interface in org.apache.calcite.schema">Schema</a></h3>
<code><a href="../../schema/Schema.TableType.html" title="enum in org.apache.calcite.schema">Schema.TableType</a></code></li>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><code>private java.lang.Class</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#clazz">clazz</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>private com.google.common.collect.Multimap&lt;java.lang.String,&#8203;<a href="../../schema/Function.html" title="interface in org.apache.calcite.schema">Function</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#functionMap">functionMap</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private java.util.Map&lt;java.lang.String,&#8203;<a href="../../schema/Table.html" title="interface in org.apache.calcite.schema">Table</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#tableMap">tableMap</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>private java.lang.Object</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#target">target</a></span></code></th>
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<th class="colFirst" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(java.lang.Object)">ReflectiveSchema</a></span>&#8203;(java.lang.Object&nbsp;target)</code></th>
<td class="colLast">
<div class="block">Creates a ReflectiveSchema.</div>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
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<td class="colFirst"><code>private com.google.common.collect.Multimap&lt;java.lang.String,&#8203;<a href="../../schema/Function.html" title="interface in org.apache.calcite.schema">Function</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createFunctionMap()">createFunctionMap</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>private java.util.Map&lt;java.lang.String,&#8203;<a href="../../schema/Table.html" title="interface in org.apache.calcite.schema">Table</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createTableMap()">createTableMap</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>private &lt;T&gt;&nbsp;<a href="../../schema/Table.html" title="interface in org.apache.calcite.schema">Table</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#fieldRelation(java.lang.reflect.Field)">fieldRelation</a></span>&#8203;(java.lang.reflect.Field&nbsp;field)</code></th>
<td class="colLast">
<div class="block">Returns a table based on a particular field of this schema.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>private static java.lang.reflect.Type</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getElementType(java.lang.Class)">getElementType</a></span>&#8203;(java.lang.Class&nbsp;clazz)</code></th>
<td class="colLast">
<div class="block">Deduces the element type of a collection;
same logic as <a href="#toEnumerable(java.lang.Object)"><code>toEnumerable(java.lang.Object)</code></a></div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>protected com.google.common.collect.Multimap&lt;java.lang.String,&#8203;<a href="../../schema/Function.html" title="interface in org.apache.calcite.schema">Function</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getFunctionMultimap()">getFunctionMultimap</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a multi-map of functions in this schema by name.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>protected java.util.Map&lt;java.lang.String,&#8203;<a href="../../schema/Table.html" title="interface in org.apache.calcite.schema">Table</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTableMap()">getTableMap</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a map of tables in this schema by name.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTarget()">getTarget</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the wrapped object.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>(package private) <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="#getTargetExpression(org.apache.calcite.schema.SchemaPlus,java.lang.String)">getTargetExpression</a></span>&#8203;(<a href="../../schema/SchemaPlus.html" title="interface in org.apache.calcite.schema">SchemaPlus</a>&nbsp;parentSchema,
java.lang.String&nbsp;name)</code></th>
<td class="colLast">
<div class="block">Returns an expression for the object wrapped by this schema (not the
schema itself).</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>private static <a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toEnumerable(java.lang.Object)">toEnumerable</a></span>&#8203;(java.lang.Object&nbsp;o)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString()">toString</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<h3>Methods inherited from class&nbsp;org.apache.calcite.schema.impl.<a href="../../schema/impl/AbstractSchema.html" title="class in org.apache.calcite.schema.impl">AbstractSchema</a></h3>
<code><a href="../../schema/impl/AbstractSchema.html#getExpression(org.apache.calcite.schema.SchemaPlus,java.lang.String)">getExpression</a>, <a href="../../schema/impl/AbstractSchema.html#getFunctionNames()">getFunctionNames</a>, <a href="../../schema/impl/AbstractSchema.html#getFunctions(java.lang.String)">getFunctions</a>, <a href="../../schema/impl/AbstractSchema.html#getSubSchema(java.lang.String)">getSubSchema</a>, <a href="../../schema/impl/AbstractSchema.html#getSubSchemaMap()">getSubSchemaMap</a>, <a href="../../schema/impl/AbstractSchema.html#getSubSchemaNames()">getSubSchemaNames</a>, <a href="../../schema/impl/AbstractSchema.html#getTable(java.lang.String)">getTable</a>, <a href="../../schema/impl/AbstractSchema.html#getTableNames()">getTableNames</a>, <a href="../../schema/impl/AbstractSchema.html#getType(java.lang.String)">getType</a>, <a href="../../schema/impl/AbstractSchema.html#getTypeMap()">getTypeMap</a>, <a href="../../schema/impl/AbstractSchema.html#getTypeNames()">getTypeNames</a>, <a href="../../schema/impl/AbstractSchema.html#isMutable()">isMutable</a>, <a href="../../schema/impl/AbstractSchema.html#snapshot(org.apache.calcite.schema.SchemaVersion)">snapshot</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li>
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<pre>private final&nbsp;java.lang.Class clazz</pre>
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<h4>target</h4>
<pre>private&nbsp;java.lang.Object target</pre>
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<h4>tableMap</h4>
<pre>private&nbsp;java.util.Map&lt;java.lang.String,&#8203;<a href="../../schema/Table.html" title="interface in org.apache.calcite.schema">Table</a>&gt; tableMap</pre>
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<h4>functionMap</h4>
<pre>private&nbsp;com.google.common.collect.Multimap&lt;java.lang.String,&#8203;<a href="../../schema/Function.html" title="interface in org.apache.calcite.schema">Function</a>&gt; functionMap</pre>
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<h4>ReflectiveSchema</h4>
<pre>public&nbsp;ReflectiveSchema&#8203;(java.lang.Object&nbsp;target)</pre>
<div class="block">Creates a ReflectiveSchema.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>target</code> - Object whose fields will be sub-objects of the schema</dd>
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<h4>toString</h4>
<pre class="methodSignature">public&nbsp;java.lang.String&nbsp;toString()</pre>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>toString</code>&nbsp;in class&nbsp;<code>java.lang.Object</code></dd>
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<pre class="methodSignature">public&nbsp;java.lang.Object&nbsp;getTarget()</pre>
<div class="block">Returns the wrapped object.
<p>May not appear to be used, but is used in generated code via
<a href="../../util/BuiltInMethod.html#REFLECTIVE_SCHEMA_GET_TARGET"><code>BuiltInMethod.REFLECTIVE_SCHEMA_GET_TARGET</code></a>.</div>
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<h4>getTableMap</h4>
<pre class="methodSignature">protected&nbsp;java.util.Map&lt;java.lang.String,&#8203;<a href="../../schema/Table.html" title="interface in org.apache.calcite.schema">Table</a>&gt;&nbsp;getTableMap()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../schema/impl/AbstractSchema.html#getTableMap()">AbstractSchema</a></code></span></div>
<div class="block">Returns a map of tables in this schema by name.
<p>The implementations of <a href="../../schema/impl/AbstractSchema.html#getTableNames()"><code>AbstractSchema.getTableNames()</code></a>
and <a href="../../schema/impl/AbstractSchema.html#getTable(java.lang.String)"><code>AbstractSchema.getTable(String)</code></a> depend on this map.
The default implementation of this method returns the empty map.
Override this method to change their behavior.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../schema/impl/AbstractSchema.html#getTableMap()">getTableMap</a></code>&nbsp;in class&nbsp;<code><a href="../../schema/impl/AbstractSchema.html" title="class in org.apache.calcite.schema.impl">AbstractSchema</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Map of tables in this schema by name</dd>
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<a id="createTableMap()">
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<h4>createTableMap</h4>
<pre class="methodSignature">private&nbsp;java.util.Map&lt;java.lang.String,&#8203;<a href="../../schema/Table.html" title="interface in org.apache.calcite.schema">Table</a>&gt;&nbsp;createTableMap()</pre>
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<h4>getFunctionMultimap</h4>
<pre class="methodSignature">protected&nbsp;com.google.common.collect.Multimap&lt;java.lang.String,&#8203;<a href="../../schema/Function.html" title="interface in org.apache.calcite.schema">Function</a>&gt;&nbsp;getFunctionMultimap()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../schema/impl/AbstractSchema.html#getFunctionMultimap()">AbstractSchema</a></code></span></div>
<div class="block">Returns a multi-map of functions in this schema by name.
It is a multi-map because functions are overloaded; there may be more than
one function in a schema with a given name (as long as they have different
parameter lists).
<p>The implementations of <a href="../../schema/impl/AbstractSchema.html#getFunctionNames()"><code>AbstractSchema.getFunctionNames()</code></a>
and <a href="../../schema/Schema.html#getFunctions(java.lang.String)"><code>Schema.getFunctions(String)</code></a> depend on this map.
The default implementation of this method returns the empty multi-map.
Override this method to change their behavior.</p></div>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../schema/impl/AbstractSchema.html#getFunctionMultimap()">getFunctionMultimap</a></code>&nbsp;in class&nbsp;<code><a href="../../schema/impl/AbstractSchema.html" title="class in org.apache.calcite.schema.impl">AbstractSchema</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Multi-map of functions in this schema by name</dd>
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<h4>createFunctionMap</h4>
<pre class="methodSignature">private&nbsp;com.google.common.collect.Multimap&lt;java.lang.String,&#8203;<a href="../../schema/Function.html" title="interface in org.apache.calcite.schema">Function</a>&gt;&nbsp;createFunctionMap()</pre>
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<h4>getTargetExpression</h4>
<pre class="methodSignature"><a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>&nbsp;getTargetExpression&#8203;(<a href="../../schema/SchemaPlus.html" title="interface in org.apache.calcite.schema">SchemaPlus</a>&nbsp;parentSchema,
java.lang.String&nbsp;name)</pre>
<div class="block">Returns an expression for the object wrapped by this schema (not the
schema itself).</div>
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<h4>fieldRelation</h4>
<pre class="methodSignature">private&nbsp;&lt;T&gt;&nbsp;<a href="../../schema/Table.html" title="interface in org.apache.calcite.schema">Table</a>&nbsp;fieldRelation&#8203;(java.lang.reflect.Field&nbsp;field)</pre>
<div class="block">Returns a table based on a particular field of this schema. If the
field is not of the right type to be a relation, returns null.</div>
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<h4>getElementType</h4>
<pre class="methodSignature">private static&nbsp;java.lang.reflect.Type&nbsp;getElementType&#8203;(java.lang.Class&nbsp;clazz)</pre>
<div class="block">Deduces the element type of a collection;
same logic as <a href="#toEnumerable(java.lang.Object)"><code>toEnumerable(java.lang.Object)</code></a></div>
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<h4>toEnumerable</h4>
<pre class="methodSignature">private static&nbsp;<a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a>&nbsp;toEnumerable&#8203;(java.lang.Object&nbsp;o)</pre>
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