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| <div class="subTitle">org.apache.drill.exec.vector.accessor.reader</div> |
| <h2 title="Class AbstractObjectReader" class="title">Class AbstractObjectReader</h2> |
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| <li>org.apache.drill.exec.vector.accessor.reader.AbstractObjectReader</li> |
| </ul> |
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| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ColumnReader.html" title="interface in org.apache.drill.exec.vector.accessor">ColumnReader</a>, <a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html" title="interface in org.apache.drill.exec.vector.accessor">ObjectReader</a></dd> |
| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/AbstractScalarReader.ScalarObjectReader.html" title="class in org.apache.drill.exec.vector.accessor.reader">AbstractScalarReader.ScalarObjectReader</a>, <a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/AbstractTupleReader.TupleObjectReader.html" title="class in org.apache.drill.exec.vector.accessor.reader">AbstractTupleReader.TupleObjectReader</a>, <a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/ArrayReaderImpl.ArrayObjectReader.html" title="class in org.apache.drill.exec.vector.accessor.reader">ArrayReaderImpl.ArrayObjectReader</a>, <a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/UnionReaderImpl.UnionObjectReader.html" title="class in org.apache.drill.exec.vector.accessor.reader">UnionReaderImpl.UnionObjectReader</a></dd> |
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| <pre>public abstract class <span class="typeNameLabel">AbstractObjectReader</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> |
| implements <a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html" title="interface in org.apache.drill.exec.vector.accessor">ObjectReader</a></pre> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/AbstractObjectReader.html#AbstractObjectReader--">AbstractObjectReader</a></span>()</code> </td> |
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| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ArrayReader.html" title="interface in org.apache.drill.exec.vector.accessor">ArrayReader</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/AbstractObjectReader.html#array--">array</a></span>()</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/DictReader.html" title="interface in org.apache.drill.exec.vector.accessor">DictReader</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/AbstractObjectReader.html#dict--">dict</a></span>()</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>abstract <a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/ReaderEvents.html" title="interface in org.apache.drill.exec.vector.accessor.reader">ReaderEvents</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/AbstractObjectReader.html#events--">events</a></span>()</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/AbstractObjectReader.html#isNull--">isNull</a></span>()</code> |
| <div class="block">Determine if this value is null.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>abstract <a href="../../../../../../../org/apache/drill/exec/vector/accessor/ColumnReader.html" title="interface in org.apache.drill.exec.vector.accessor">ColumnReader</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/AbstractObjectReader.html#reader--">reader</a></span>()</code> |
| <div class="block">Gets the reader as a generic type, for dynamic |
| programming.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ScalarReader.html" title="interface in org.apache.drill.exec.vector.accessor">ScalarReader</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/AbstractObjectReader.html#scalar--">scalar</a></span>()</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/AbstractObjectReader.html#schema--">schema</a></span>()</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/TupleReader.html" title="interface in org.apache.drill.exec.vector.accessor">TupleReader</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/AbstractObjectReader.html#tuple--">tuple</a></span>()</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectType.html" title="enum in org.apache.drill.exec.vector.accessor">ObjectType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/AbstractObjectReader.html#type--">type</a></span>()</code> |
| <div class="block">The type of this reader.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/VariantReader.html" title="interface in org.apache.drill.exec.vector.accessor">VariantReader</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/AbstractObjectReader.html#variant--">variant</a></span>()</code> </td> |
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| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
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| </a> |
| <h3>Methods inherited from interface org.apache.drill.exec.vector.accessor.<a href="../../../../../../../org/apache/drill/exec/vector/accessor/ColumnReader.html" title="interface in org.apache.drill.exec.vector.accessor">ColumnReader</a></h3> |
| <code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ColumnReader.html#getAsString--">getAsString</a>, <a href="../../../../../../../org/apache/drill/exec/vector/accessor/ColumnReader.html#getObject--">getObject</a></code></li> |
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| </ul> |
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| </ul> |
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| <div class="details"> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| <h3>Constructor Detail</h3> |
| <a name="AbstractObjectReader--"> |
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| <h4>AbstractObjectReader</h4> |
| <pre>public AbstractObjectReader()</pre> |
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| <h4>schema</h4> |
| <pre>public <a href="../../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a> schema()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ColumnReader.html#schema--">schema</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ColumnReader.html" title="interface in org.apache.drill.exec.vector.accessor">ColumnReader</a></code></dd> |
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| <h4>scalar</h4> |
| <pre>public <a href="../../../../../../../org/apache/drill/exec/vector/accessor/ScalarReader.html" title="interface in org.apache.drill.exec.vector.accessor">ScalarReader</a> scalar()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html#scalar--">scalar</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html" title="interface in org.apache.drill.exec.vector.accessor">ObjectReader</a></code></dd> |
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| <a name="tuple--"> |
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| <h4>tuple</h4> |
| <pre>public <a href="../../../../../../../org/apache/drill/exec/vector/accessor/TupleReader.html" title="interface in org.apache.drill.exec.vector.accessor">TupleReader</a> tuple()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html#tuple--">tuple</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html" title="interface in org.apache.drill.exec.vector.accessor">ObjectReader</a></code></dd> |
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| <h4>array</h4> |
| <pre>public <a href="../../../../../../../org/apache/drill/exec/vector/accessor/ArrayReader.html" title="interface in org.apache.drill.exec.vector.accessor">ArrayReader</a> array()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html#array--">array</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html" title="interface in org.apache.drill.exec.vector.accessor">ObjectReader</a></code></dd> |
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| <h4>dict</h4> |
| <pre>public <a href="../../../../../../../org/apache/drill/exec/vector/accessor/DictReader.html" title="interface in org.apache.drill.exec.vector.accessor">DictReader</a> dict()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html#dict--">dict</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html" title="interface in org.apache.drill.exec.vector.accessor">ObjectReader</a></code></dd> |
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| <h4>events</h4> |
| <pre>public abstract <a href="../../../../../../../org/apache/drill/exec/vector/accessor/reader/ReaderEvents.html" title="interface in org.apache.drill.exec.vector.accessor.reader">ReaderEvents</a> events()</pre> |
| </li> |
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| <a name="reader--"> |
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| <h4>reader</h4> |
| <pre>public abstract <a href="../../../../../../../org/apache/drill/exec/vector/accessor/ColumnReader.html" title="interface in org.apache.drill.exec.vector.accessor">ColumnReader</a> reader()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html#reader--">ObjectReader</a></code></span></div> |
| <div class="block">Gets the reader as a generic type, for dynamic |
| programming.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html#reader--">reader</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html" title="interface in org.apache.drill.exec.vector.accessor">ObjectReader</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the untyped reader</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>variant</h4> |
| <pre>public <a href="../../../../../../../org/apache/drill/exec/vector/accessor/VariantReader.html" title="interface in org.apache.drill.exec.vector.accessor">VariantReader</a> variant()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html#variant--">variant</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectReader.html" title="interface in org.apache.drill.exec.vector.accessor">ObjectReader</a></code></dd> |
| </dl> |
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| <h4>isNull</h4> |
| <pre>public boolean isNull()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ColumnReader.html#isNull--">ColumnReader</a></code></span></div> |
| <div class="block">Determine if this value is null. |
| <ul> |
| <li>Nullable scalar: determine if the value is null.</li> |
| <li>Non-nullable scalar: always returns <tt>false</tt>.</li> |
| <li>Arrays: always returns </tt>false</tt.></li> |
| <li>Lists: determine if the list for the current row is null. |
| In a list, an array entry can be null, empty, or can contain |
| items. In repeated types, the array itself is never null. |
| If the array is null, then it implicitly has no entries.</li> |
| <li>Map or Repeated Map: Always returns <tt>false</tt>.</li> |
| <li>Map inside a union, or in a list that contains a union, |
| the tuple itself can be null.</li> |
| <li>Union: Determine if the current value is null. Null values have no type |
| and no associated reader.</li> |
| </ul></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ColumnReader.html#isNull--">isNull</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ColumnReader.html" title="interface in org.apache.drill.exec.vector.accessor">ColumnReader</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><tt>true</tt> if this value is null; <tt>false</tt> otherwise</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="type--"> |
| <!-- --> |
| </a> |
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| <h4>type</h4> |
| <pre>public <a href="../../../../../../../org/apache/drill/exec/vector/accessor/ObjectType.html" title="enum in org.apache.drill.exec.vector.accessor">ObjectType</a> type()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ColumnReader.html#type--">ColumnReader</a></code></span></div> |
| <div class="block">The type of this reader.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ColumnReader.html#type--">type</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/vector/accessor/ColumnReader.html" title="interface in org.apache.drill.exec.vector.accessor">ColumnReader</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>type of reader</dd> |
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