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| <div class="subTitle">org.apache.drill.exec.physical.impl.scan.project</div> |
| <h2 title="Class AbstractUnresolvedColumn" class="title">Class AbstractUnresolvedColumn</h2> |
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| <li> |
| <ul class="inheritance"> |
| <li>org.apache.drill.exec.physical.impl.scan.project.AbstractUnresolvedColumn</li> |
| </ul> |
| </li> |
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| <div class="description"> |
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| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ColumnProjection.html" title="interface in org.apache.drill.exec.physical.impl.scan.project">ColumnProjection</a></dd> |
| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/AbstractUnresolvedColumn.UnresolvedColumn.html" title="class in org.apache.drill.exec.physical.impl.scan.project">AbstractUnresolvedColumn.UnresolvedColumn</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/AbstractUnresolvedColumn.UnresolvedWildcardColumn.html" title="class in org.apache.drill.exec.physical.impl.scan.project">AbstractUnresolvedColumn.UnresolvedWildcardColumn</a>, <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/columns/UnresolvedColumnsArrayColumn.html" title="class in org.apache.drill.exec.physical.impl.scan.columns">UnresolvedColumnsArrayColumn</a></dd> |
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| <pre>public abstract class <span class="typeNameLabel">AbstractUnresolvedColumn</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/physical/impl/scan/project/ColumnProjection.html" title="interface in org.apache.drill.exec.physical.impl.scan.project">ColumnProjection</a></pre> |
| <div class="block">Represents a projected column that has not yet been bound to a |
| table column, special column or a null column. Once bound, this |
| column projection is replaced with the detailed binding. |
| <p> |
| Occurs in a scan-level projection to identify columns needed in |
| the output batch. Once we see reader data, we create a |
| <a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ResolvedColumn.html" title="class in org.apache.drill.exec.physical.impl.scan.project"><code>ResolvedColumn</code></a> to replace this unresolved form. The |
| resolved form identifies how to map data from its source (reader, |
| null column builder, etc.) to the output batch. Thus the columns |
| here are placeholders to be rewritten once more data is available.</div> |
| </li> |
| </ul> |
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| <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/project/AbstractUnresolvedColumn.UnresolvedColumn.html" title="class in org.apache.drill.exec.physical.impl.scan.project">AbstractUnresolvedColumn.UnresolvedColumn</a></span></code> |
| <div class="block">Represents an unresolved table column to be provided by the |
| reader (or filled in with nulls.) May be associated with |
| a provided schema column.</div> |
| </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/project/AbstractUnresolvedColumn.UnresolvedWildcardColumn.html" title="class in org.apache.drill.exec.physical.impl.scan.project">AbstractUnresolvedColumn.UnresolvedWildcardColumn</a></span></code> </td> |
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| <td class="colFirst"><code>protected <a href="../../../../../../../../org/apache/drill/exec/physical/resultSet/project/RequestedColumn.html" title="interface in org.apache.drill.exec.physical.resultSet.project">RequestedColumn</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/AbstractUnresolvedColumn.html#inCol">inCol</a></span></code> |
| <div class="block">The original physical plan column to which this output column |
| maps.</div> |
| </td> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/AbstractUnresolvedColumn.html#AbstractUnresolvedColumn-org.apache.drill.exec.physical.resultSet.project.RequestedColumn-">AbstractUnresolvedColumn</a></span>(<a href="../../../../../../../../org/apache/drill/exec/physical/resultSet/project/RequestedColumn.html" title="interface in org.apache.drill.exec.physical.resultSet.project">RequestedColumn</a> inCol)</code> </td> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../../../org/apache/drill/exec/physical/resultSet/project/RequestedColumn.html" title="interface in org.apache.drill.exec.physical.resultSet.project">RequestedColumn</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/AbstractUnresolvedColumn.html#element--">element</a></span>()</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><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/project/AbstractUnresolvedColumn.html#name--">name</a></span>()</code> |
| <div class="block">The name of the column as it appears in the output |
| row (record batch.)</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><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/project/AbstractUnresolvedColumn.html#toString--">toString</a></span>()</code> </td> |
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| <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#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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| <!-- ============ FIELD DETAIL =========== --> |
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| <h3>Field Detail</h3> |
| <a name="inCol"> |
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| </a> |
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| <li class="blockList"> |
| <h4>inCol</h4> |
| <pre>protected final <a href="../../../../../../../../org/apache/drill/exec/physical/resultSet/project/RequestedColumn.html" title="interface in org.apache.drill.exec.physical.resultSet.project">RequestedColumn</a> inCol</pre> |
| <div class="block">The original physical plan column to which this output column |
| maps. In some cases, multiple output columns map map the to the |
| same "input" (to the projection process) column.</div> |
| </li> |
| </ul> |
| </li> |
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| <h4>AbstractUnresolvedColumn</h4> |
| <pre>public AbstractUnresolvedColumn(<a href="../../../../../../../../org/apache/drill/exec/physical/resultSet/project/RequestedColumn.html" title="interface in org.apache.drill.exec.physical.resultSet.project">RequestedColumn</a> inCol)</pre> |
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| <h4>name</h4> |
| <pre>public <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> name()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ColumnProjection.html#name--">ColumnProjection</a></code></span></div> |
| <div class="block">The name of the column as it appears in the output |
| row (record batch.)</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ColumnProjection.html#name--">name</a></code> in interface <code><a href="../../../../../../../../org/apache/drill/exec/physical/impl/scan/project/ColumnProjection.html" title="interface in org.apache.drill.exec.physical.impl.scan.project">ColumnProjection</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the output column name</dd> |
| </dl> |
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| <pre>public <a href="../../../../../../../../org/apache/drill/exec/physical/resultSet/project/RequestedColumn.html" title="interface in org.apache.drill.exec.physical.resultSet.project">RequestedColumn</a> element()</pre> |
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| <pre>public <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> toString()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><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></code> in class <code><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></code></dd> |
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