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<h2 title="Class AbstractCursor" class="title">Class AbstractCursor</h2>
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<li>java.lang.Object</li>
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<li>org.apache.calcite.avatica.util.AbstractCursor</li>
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<dt>Direct Known Subclasses:</dt>
<dd><code><a href="PositionedCursor.html" title="class in org.apache.calcite.avatica.util">PositionedCursor</a></code></dd>
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<pre>public abstract class <span class="typeNameLabel">AbstractCursor</span>
extends java.lang.Object
implements <a href="Cursor.html" title="interface in org.apache.calcite.avatica.util">Cursor</a></pre>
<div class="block">Base class for implementing a cursor.
<p>Derived class needs to provide <a href="AbstractCursor.Getter.html" title="interface in org.apache.calcite.avatica.util"><code>AbstractCursor.Getter</code></a> and can override
<a href="Cursor.Accessor.html" title="interface in org.apache.calcite.avatica.util"><code>Cursor.Accessor</code></a> implementations if it
wishes.</p></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>protected class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="AbstractCursor.AbstractGetter.html" title="class in org.apache.calcite.avatica.util">AbstractCursor.AbstractGetter</a></span></code></th>
<td class="colLast">
<div class="block">Abstract implementation of <a href="AbstractCursor.Getter.html" title="interface in org.apache.calcite.avatica.util"><code>AbstractCursor.Getter</code></a>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="AbstractCursor.ArrayAccessor.html" title="class in org.apache.calcite.avatica.util">AbstractCursor.ArrayAccessor</a></span></code></th>
<td class="colLast">
<div class="block">Accessor that assumes that the underlying value is an ARRAY;
corresponds to <code>Types.ARRAY</code>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected static interface&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="AbstractCursor.Getter.html" title="interface in org.apache.calcite.avatica.util">AbstractCursor.Getter</a></span></code></th>
<td class="colLast">
<div class="block">Gets a value from a particular field of the current record of this
cursor.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="AbstractCursor.SlotGetter.html" title="class in org.apache.calcite.avatica.util">AbstractCursor.SlotGetter</a></span></code></th>
<td class="colLast">
<div class="block">Implementation of <a href="AbstractCursor.Getter.html" title="interface in org.apache.calcite.avatica.util"><code>AbstractCursor.Getter</code></a> that returns the current contents of
a mutable slot.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="AbstractCursor.StructGetter.html" title="class in org.apache.calcite.avatica.util">AbstractCursor.StructGetter</a></span></code></th>
<td class="colLast">
<div class="block">Implementation of <a href="AbstractCursor.Getter.html" title="interface in org.apache.calcite.avatica.util"><code>AbstractCursor.Getter</code></a> that returns the value of a given field
of the current contents of another getter.</div>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.apache.calcite.avatica.util.<a href="Cursor.html" title="interface in org.apache.calcite.avatica.util">Cursor</a></h3>
<code><a href="Cursor.Accessor.html" title="interface in org.apache.calcite.avatica.util">Cursor.Accessor</a></code></li>
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<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><code>protected boolean[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#wasNull">wasNull</a></span></code></th>
<td class="colLast">
<div class="block">Slot into which each accessor should write whether the
value returned was null.</div>
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<td class="colFirst"><code>protected </code></td>
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">AbstractCursor</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><code>protected <a href="Cursor.Accessor.html" title="interface in org.apache.calcite.avatica.util">Cursor.Accessor</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createAccessor(org.apache.calcite.avatica.ColumnMetaData,int,java.util.Calendar,org.apache.calcite.avatica.util.ArrayImpl.Factory)">createAccessor</a></span>&#8203;(<a href="../ColumnMetaData.html" title="class in org.apache.calcite.avatica">ColumnMetaData</a>&nbsp;columnMetaData,
int&nbsp;ordinal,
java.util.Calendar&nbsp;localCalendar,
<a href="ArrayImpl.Factory.html" title="interface in org.apache.calcite.avatica.util">ArrayImpl.Factory</a>&nbsp;factory)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>protected <a href="Cursor.Accessor.html" title="interface in org.apache.calcite.avatica.util">Cursor.Accessor</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createAccessor(org.apache.calcite.avatica.ColumnMetaData,org.apache.calcite.avatica.util.AbstractCursor.Getter,java.util.Calendar,org.apache.calcite.avatica.util.ArrayImpl.Factory)">createAccessor</a></span>&#8203;(<a href="../ColumnMetaData.html" title="class in org.apache.calcite.avatica">ColumnMetaData</a>&nbsp;columnMetaData,
<a href="AbstractCursor.Getter.html" title="interface in org.apache.calcite.avatica.util">AbstractCursor.Getter</a>&nbsp;getter,
java.util.Calendar&nbsp;localCalendar,
<a href="ArrayImpl.Factory.html" title="interface in org.apache.calcite.avatica.util">ArrayImpl.Factory</a>&nbsp;factory)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>java.util.List&lt;<a href="Cursor.Accessor.html" title="interface in org.apache.calcite.avatica.util">Cursor.Accessor</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createAccessors(java.util.List,java.util.Calendar,org.apache.calcite.avatica.util.ArrayImpl.Factory)">createAccessors</a></span>&#8203;(java.util.List&lt;<a href="../ColumnMetaData.html" title="class in org.apache.calcite.avatica">ColumnMetaData</a>&gt;&nbsp;types,
java.util.Calendar&nbsp;localCalendar,
<a href="ArrayImpl.Factory.html" title="interface in org.apache.calcite.avatica.util">ArrayImpl.Factory</a>&nbsp;factory)</code></th>
<td class="colLast">
<div class="block">Creates a list of accessors, one per column.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected abstract <a href="AbstractCursor.Getter.html" title="interface in org.apache.calcite.avatica.util">AbstractCursor.Getter</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createGetter(int)">createGetter</a></span>&#8203;(int&nbsp;ordinal)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>abstract boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#next()">next</a></span>()</code></th>
<td class="colLast">
<div class="block">Moves to the next row.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#wasNull()">wasNull</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns whether the last value returned was null.</div>
</td>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h3>Methods inherited from interface&nbsp;org.apache.calcite.avatica.util.<a href="Cursor.html" title="interface in org.apache.calcite.avatica.util">Cursor</a></h3>
<code><a href="Cursor.html#close()">close</a></code></li>
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<h3>Field Detail</h3>
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<h4>wasNull</h4>
<pre>protected final&nbsp;boolean[] wasNull</pre>
<div class="block">Slot into which each accessor should write whether the
value returned was null.</div>
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<h4>AbstractCursor</h4>
<pre>protected&nbsp;AbstractCursor()</pre>
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<h4>wasNull</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;wasNull()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="Cursor.html#wasNull()">Cursor</a></code></span></div>
<div class="block">Returns whether the last value returned was null.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="Cursor.html#wasNull()">wasNull</a></code>&nbsp;in interface&nbsp;<code><a href="Cursor.html" title="interface in org.apache.calcite.avatica.util">Cursor</a></code></dd>
</dl>
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<h4>createAccessors</h4>
<pre class="methodSignature">public&nbsp;java.util.List&lt;<a href="Cursor.Accessor.html" title="interface in org.apache.calcite.avatica.util">Cursor.Accessor</a>&gt;&nbsp;createAccessors&#8203;(java.util.List&lt;<a href="../ColumnMetaData.html" title="class in org.apache.calcite.avatica">ColumnMetaData</a>&gt;&nbsp;types,
java.util.Calendar&nbsp;localCalendar,
<a href="ArrayImpl.Factory.html" title="interface in org.apache.calcite.avatica.util">ArrayImpl.Factory</a>&nbsp;factory)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="Cursor.html#createAccessors(java.util.List,java.util.Calendar,org.apache.calcite.avatica.util.ArrayImpl.Factory)">Cursor</a></code></span></div>
<div class="block">Creates a list of accessors, one per column.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="Cursor.html#createAccessors(java.util.List,java.util.Calendar,org.apache.calcite.avatica.util.ArrayImpl.Factory)">createAccessors</a></code>&nbsp;in interface&nbsp;<code><a href="Cursor.html" title="interface in org.apache.calcite.avatica.util">Cursor</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>types</code> - List of column types, per <code>Types</code>.</dd>
<dd><code>localCalendar</code> - Calendar in local time zone</dd>
<dd><code>factory</code> - Factory that creates sub-ResultSets when needed</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>List of column accessors</dd>
</dl>
</li>
</ul>
<a id="createAccessor(org.apache.calcite.avatica.ColumnMetaData,int,java.util.Calendar,org.apache.calcite.avatica.util.ArrayImpl.Factory)">
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<h4>createAccessor</h4>
<pre class="methodSignature">protected&nbsp;<a href="Cursor.Accessor.html" title="interface in org.apache.calcite.avatica.util">Cursor.Accessor</a>&nbsp;createAccessor&#8203;(<a href="../ColumnMetaData.html" title="class in org.apache.calcite.avatica">ColumnMetaData</a>&nbsp;columnMetaData,
int&nbsp;ordinal,
java.util.Calendar&nbsp;localCalendar,
<a href="ArrayImpl.Factory.html" title="interface in org.apache.calcite.avatica.util">ArrayImpl.Factory</a>&nbsp;factory)</pre>
</li>
</ul>
<a id="createAccessor(org.apache.calcite.avatica.ColumnMetaData,org.apache.calcite.avatica.util.AbstractCursor.Getter,java.util.Calendar,org.apache.calcite.avatica.util.ArrayImpl.Factory)">
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<h4>createAccessor</h4>
<pre class="methodSignature">protected&nbsp;<a href="Cursor.Accessor.html" title="interface in org.apache.calcite.avatica.util">Cursor.Accessor</a>&nbsp;createAccessor&#8203;(<a href="../ColumnMetaData.html" title="class in org.apache.calcite.avatica">ColumnMetaData</a>&nbsp;columnMetaData,
<a href="AbstractCursor.Getter.html" title="interface in org.apache.calcite.avatica.util">AbstractCursor.Getter</a>&nbsp;getter,
java.util.Calendar&nbsp;localCalendar,
<a href="ArrayImpl.Factory.html" title="interface in org.apache.calcite.avatica.util">ArrayImpl.Factory</a>&nbsp;factory)</pre>
</li>
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<a id="createGetter(int)">
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<h4>createGetter</h4>
<pre class="methodSignature">protected abstract&nbsp;<a href="AbstractCursor.Getter.html" title="interface in org.apache.calcite.avatica.util">AbstractCursor.Getter</a>&nbsp;createGetter&#8203;(int&nbsp;ordinal)</pre>
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<h4>next</h4>
<pre class="methodSignature">public abstract&nbsp;boolean&nbsp;next()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="Cursor.html#next()">Cursor</a></code></span></div>
<div class="block">Moves to the next row.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="Cursor.html#next()">next</a></code>&nbsp;in interface&nbsp;<code><a href="Cursor.html" title="interface in org.apache.calcite.avatica.util">Cursor</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Whether moved</dd>
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