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| <div class="subTitle">org.apache.drill.exec.physical.impl.scan.columns</div> |
| <h2 title="Class ColumnsScanFramework" class="title">Class ColumnsScanFramework</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html" title="class in org.apache.drill.exec.physical.impl.scan.framework">org.apache.drill.exec.physical.impl.scan.framework.ManagedScanFramework</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.html" title="class in org.apache.drill.exec.physical.impl.scan.file">org.apache.drill.exec.physical.impl.scan.file.FileScanFramework</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.drill.exec.physical.impl.scan.columns.ColumnsScanFramework</li> |
| </ul> |
| </li> |
| </ul> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/ScanOperatorEvents.html" title="interface in org.apache.drill.exec.physical.impl.scan">ScanOperatorEvents</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public class <span class="typeNameLabel">ColumnsScanFramework</span> |
| extends <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.html" title="class in org.apache.drill.exec.physical.impl.scan.file">FileScanFramework</a></pre> |
| <div class="block">Scan framework for a file that supports the special "columns" column. |
| <p> |
| The logic here is a bit tricky. The CSV (really, "compliant text") reader |
| operates in multiple modes. If a header is required, then the columns |
| array is not allowed. If the header is not loaded, then the columns |
| array must be used. |
| <p> |
| This class combines the above semantics with the projection list from the |
| query. It handles things like two appearances of the unadorned columns |
| identifier, the use of the columns identifier when it is not allowed, etc.</div> |
| </li> |
| </ul> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Class and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/columns/ColumnsScanFramework.ColumnsScanBuilder.html" title="class in org.apache.drill.exec.physical.impl.scan.columns">ColumnsScanFramework.ColumnsScanBuilder</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/columns/ColumnsScanFramework.ColumnsSchemaNegotiatorImpl.html" title="class in org.apache.drill.exec.physical.impl.scan.columns">ColumnsScanFramework.ColumnsSchemaNegotiatorImpl</a></span></code> |
| <div class="block">Implementation of the columns array schema negotiator.</div> |
| </td> |
| </tr> |
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| <h3>Nested classes/interfaces inherited from class org.apache.drill.exec.physical.impl.scan.file.<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.html" title="class in org.apache.drill.exec.physical.impl.scan.file">FileScanFramework</a></h3> |
| <code><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.FileReaderFactory.html" title="class in org.apache.drill.exec.physical.impl.scan.file">FileScanFramework.FileReaderFactory</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.FileRowSetContext.html" title="class in org.apache.drill.exec.physical.impl.scan.file">FileScanFramework.FileRowSetContext</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.FileScanBuilder.html" title="class in org.apache.drill.exec.physical.impl.scan.file">FileScanFramework.FileScanBuilder</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.FileSchemaNegotiator.html" title="interface in org.apache.drill.exec.physical.impl.scan.file">FileScanFramework.FileSchemaNegotiator</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.FileSchemaNegotiatorImpl.html" title="class in org.apache.drill.exec.physical.impl.scan.file">FileScanFramework.FileSchemaNegotiatorImpl</a></code></li> |
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| <h3>Nested classes/interfaces inherited from class org.apache.drill.exec.physical.impl.scan.framework.<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html" title="class in org.apache.drill.exec.physical.impl.scan.framework">ManagedScanFramework</a></h3> |
| <code><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.ReaderFactory.html" title="interface in org.apache.drill.exec.physical.impl.scan.framework">ManagedScanFramework.ReaderFactory</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.ScanFrameworkBuilder.html" title="class in org.apache.drill.exec.physical.impl.scan.framework">ManagedScanFramework.ScanFrameworkBuilder</a></code></li> |
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| <h3>Field Summary</h3> |
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| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/columns/ColumnsScanFramework.html#COLUMNS_COL">COLUMNS_COL</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/columns/ColumnsArrayManager.html" title="class in org.apache.drill.exec.physical.impl.scan.columns">ColumnsArrayManager</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/columns/ColumnsScanFramework.html#columnsArrayManager">columnsArrayManager</a></span></code> </td> |
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| <h3>Fields inherited from class org.apache.drill.exec.physical.impl.scan.framework.<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html" title="class in org.apache.drill.exec.physical.impl.scan.framework">ManagedScanFramework</a></h3> |
| <code><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html#builder">builder</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html#context">context</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html#readerFactory">readerFactory</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html#scanOrchestrator">scanOrchestrator</a></code></li> |
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| <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/physical/impl/scan/columns/ColumnsScanFramework.html#ColumnsScanFramework-org.apache.drill.exec.physical.impl.scan.columns.ColumnsScanFramework.ColumnsScanBuilder-">ColumnsScanFramework</a></span>(<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/columns/ColumnsScanFramework.ColumnsScanBuilder.html" title="class in org.apache.drill.exec.physical.impl.scan.columns">ColumnsScanFramework.ColumnsScanBuilder</a> builder)</code> </td> |
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| <h3>Method Summary</h3> |
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| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></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="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
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| <th class="colLast" scope="col">Method and Description</th> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../../../../org/apache/drill/exec/record/metadata/TupleMetadata.html" title="interface in org.apache.drill.exec.record.metadata">TupleMetadata</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/columns/ColumnsScanFramework.html#columnsSchema--">columnsSchema</a></span>()</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/columns/ColumnsScanFramework.html#configure--">configure</a></span>()</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/SchemaNegotiatorImpl.html" title="class in org.apache.drill.exec.physical.impl.scan.framework">SchemaNegotiatorImpl</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/columns/ColumnsScanFramework.html#newNegotiator--">newNegotiator</a></span>()</code> </td> |
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| <h3>Methods inherited from class org.apache.drill.exec.physical.impl.scan.file.<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.html" title="class in org.apache.drill.exec.physical.impl.scan.file">FileScanFramework</a></h3> |
| <code><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.html#fileSystem--">fileSystem</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.html#nextSplit--">nextSplit</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.html#open-org.apache.drill.exec.physical.impl.scan.framework.ShimBatchReader-">open</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.html#options--">options</a></code></li> |
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| <h3>Methods inherited from class org.apache.drill.exec.physical.impl.scan.framework.<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html" title="class in org.apache.drill.exec.physical.impl.scan.framework">ManagedScanFramework</a></h3> |
| <code><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html#bind-org.apache.drill.exec.ops.OperatorContext-">bind</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html#close--">close</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html#context--">context</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html#errorContext--">errorContext</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html#nextReader--">nextReader</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html#outputSchema--">outputSchema</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/framework/ManagedScanFramework.html#scanOrchestrator--">scanOrchestrator</a></code></li> |
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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> |
| </ul> |
| </li> |
| </ul> |
| </li> |
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| </div> |
| <div class="details"> |
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| <h3>Field Detail</h3> |
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| <h4>COLUMNS_COL</h4> |
| <pre>public static final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> COLUMNS_COL</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../../../constant-values.html#org.apache.drill.exec.physical.impl.scan.columns.ColumnsScanFramework.COLUMNS_COL">Constant Field Values</a></dd> |
| </dl> |
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| <a name="columnsArrayManager"> |
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| <h4>columnsArrayManager</h4> |
| <pre>protected <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/columns/ColumnsArrayManager.html" title="class in org.apache.drill.exec.physical.impl.scan.columns">ColumnsArrayManager</a> columnsArrayManager</pre> |
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| <h3>Constructor Detail</h3> |
| <a name="ColumnsScanFramework-org.apache.drill.exec.physical.impl.scan.columns.ColumnsScanFramework.ColumnsScanBuilder-"> |
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| <h4>ColumnsScanFramework</h4> |
| <pre>public ColumnsScanFramework(<a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/columns/ColumnsScanFramework.ColumnsScanBuilder.html" title="class in org.apache.drill.exec.physical.impl.scan.columns">ColumnsScanFramework.ColumnsScanBuilder</a> builder)</pre> |
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| <a name="configure--"> |
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| <h4>configure</h4> |
| <pre>protected void configure()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.html#configure--">configure</a></code> in class <code><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/file/FileScanFramework.html" title="class in org.apache.drill.exec.physical.impl.scan.file">FileScanFramework</a></code></dd> |
| </dl> |
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