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| <div class="subTitle">org.apache.drill.exec.physical.resultSet.impl</div> |
| <h2 title="Class ContainerState" class="title">Class ContainerState</h2> |
| </div> |
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| <ul class="inheritance"> |
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| <li> |
| <ul class="inheritance"> |
| <li>org.apache.drill.exec.physical.resultSet.impl.ContainerState</li> |
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| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ListState.html" title="class in org.apache.drill.exec.physical.resultSet.impl">ListState</a>, <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/RepeatedListState.html" title="class in org.apache.drill.exec.physical.resultSet.impl">RepeatedListState</a>, <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/TupleState.html" title="class in org.apache.drill.exec.physical.resultSet.impl">TupleState</a>, <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/UnionState.html" title="class in org.apache.drill.exec.physical.resultSet.impl">UnionState</a></dd> |
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| <pre>public abstract class <span class="typeNameLabel">ContainerState</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></pre> |
| <div class="block">Abstract representation of a container of vectors: a row, a map, a |
| repeated map, a list or a union. |
| <p> |
| The container is responsible for creating new columns in response |
| from a writer listener event. Column creation requires a set of |
| four items: |
| <ul> |
| <li>The value vector (which may be null if the column is not |
| projected.</li> |
| <li>The writer for the column.</li> |
| <li>A vector state that manages allocation, overflow, cleanup |
| and other vector-specific tasks.</li> |
| <li>A column state which orchestrates the above three items.</li> |
| <ul></div> |
| </li> |
| </ul> |
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| <div class="summary"> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected org.apache.drill.exec.physical.resultSet.impl.LoaderInternals</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#loader">loader</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ColumnState.html" title="class in org.apache.drill.exec.physical.resultSet.impl">ColumnState</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#parentColumn">parentColumn</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ProjectionFilter.html" title="interface in org.apache.drill.exec.physical.resultSet.impl">ProjectionFilter</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#projectionSet">projectionSet</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/ResultVectorCache.html" title="interface in org.apache.drill.exec.physical.resultSet">ResultVectorCache</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#vectorCache">vectorCache</a></span></code> |
| <div class="block">Vector cache for this loader.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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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/physical/resultSet/impl/ContainerState.html#ContainerState-org.apache.drill.exec.physical.resultSet.impl.LoaderInternals-org.apache.drill.exec.physical.resultSet.ResultVectorCache-">ContainerState</a></span>(org.apache.drill.exec.physical.resultSet.impl.LoaderInternals loader, |
| <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/ResultVectorCache.html" title="interface in org.apache.drill.exec.physical.resultSet">ResultVectorCache</a> vectorCache)</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#ContainerState-org.apache.drill.exec.physical.resultSet.impl.LoaderInternals-org.apache.drill.exec.physical.resultSet.ResultVectorCache-org.apache.drill.exec.physical.resultSet.impl.ProjectionFilter-">ContainerState</a></span>(org.apache.drill.exec.physical.resultSet.impl.LoaderInternals loader, |
| <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/ResultVectorCache.html" title="interface in org.apache.drill.exec.physical.resultSet">ResultVectorCache</a> vectorCache, |
| <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ProjectionFilter.html" title="interface in org.apache.drill.exec.physical.resultSet.impl">ProjectionFilter</a> projectionSet)</code> </td> |
| </tr> |
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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="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/physical/resultSet/impl/ColumnState.html" title="class in org.apache.drill.exec.physical.resultSet.impl">ColumnState</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#addColumn-org.apache.drill.exec.record.metadata.ColumnMetadata-">addColumn</a></span>(<a href="../../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a> columnSchema)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>protected abstract void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#addColumn-org.apache.drill.exec.physical.resultSet.impl.ColumnState-">addColumn</a></span>(<a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ColumnState.html" title="class in org.apache.drill.exec.physical.resultSet.impl">ColumnState</a> colState)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#bindColumnState-org.apache.drill.exec.physical.resultSet.impl.ColumnState-">bindColumnState</a></span>(<a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ColumnState.html" title="class in org.apache.drill.exec.physical.resultSet.impl">ColumnState</a> parentState)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#close--">close</a></span>()</code> |
| <div class="block">Clean up state (such as backup vectors) associated with the state |
| for each vector.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>protected abstract <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ColumnState.html" title="class in org.apache.drill.exec.physical.resultSet.impl">ColumnState</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#columnStates--">columnStates</a></span>()</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#harvestWithLookAhead--">harvestWithLookAhead</a></span>()</code> |
| <div class="block">Writing of a row batch is complete, and an overflow occurred.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>abstract int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#innerCardinality--">innerCardinality</a></span>()</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>protected abstract boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#isVersioned--">isVersioned</a></span>()</code> |
| <div class="block">Reports whether this container is subject to version management.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>protected org.apache.drill.exec.physical.resultSet.impl.LoaderInternals</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#loader--">loader</a></span>()</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ProjectionFilter.html" title="interface in org.apache.drill.exec.physical.resultSet.impl">ProjectionFilter</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#projection--">projection</a></span>()</code> </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#rollover--">rollover</a></span>()</code> |
| <div class="block">A column within the row batch overflowed.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#startBatch-boolean-">startBatch</a></span>(boolean schemaOnly)</code> |
| <div class="block">Start a new batch by shifting the overflow buffers back into the main |
| write vectors and updating the writers.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#updateCardinality--">updateCardinality</a></span>()</code> |
| <div class="block">In order to allocate the correct-sized vectors, the container must know |
| its member cardinality: the number of elements in each row.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/ResultVectorCache.html" title="interface in org.apache.drill.exec.physical.resultSet">ResultVectorCache</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ContainerState.html#vectorCache--">vectorCache</a></span>()</code> </td> |
| </tr> |
| </table> |
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| </a> |
| <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> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
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| <!-- ============ FIELD DETAIL =========== --> |
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| </a> |
| <h3>Field Detail</h3> |
| <a name="loader"> |
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| </a> |
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| <li class="blockList"> |
| <h4>loader</h4> |
| <pre>protected final org.apache.drill.exec.physical.resultSet.impl.LoaderInternals loader</pre> |
| </li> |
| </ul> |
| <a name="projectionSet"> |
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| </a> |
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| <h4>projectionSet</h4> |
| <pre>protected final <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ProjectionFilter.html" title="interface in org.apache.drill.exec.physical.resultSet.impl">ProjectionFilter</a> projectionSet</pre> |
| </li> |
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| <a name="parentColumn"> |
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| </a> |
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| <h4>parentColumn</h4> |
| <pre>protected <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ColumnState.html" title="class in org.apache.drill.exec.physical.resultSet.impl">ColumnState</a> parentColumn</pre> |
| </li> |
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| <a name="vectorCache"> |
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| <h4>vectorCache</h4> |
| <pre>protected final <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/ResultVectorCache.html" title="interface in org.apache.drill.exec.physical.resultSet">ResultVectorCache</a> vectorCache</pre> |
| <div class="block">Vector cache for this loader. |
| <code>ResultSetOptionBuilder#setVectorCache()</code>.</div> |
| </li> |
| </ul> |
| </li> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="ContainerState-org.apache.drill.exec.physical.resultSet.impl.LoaderInternals-org.apache.drill.exec.physical.resultSet.ResultVectorCache-org.apache.drill.exec.physical.resultSet.impl.ProjectionFilter-"> |
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| <h4>ContainerState</h4> |
| <pre>public ContainerState(org.apache.drill.exec.physical.resultSet.impl.LoaderInternals loader, |
| <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/ResultVectorCache.html" title="interface in org.apache.drill.exec.physical.resultSet">ResultVectorCache</a> vectorCache, |
| <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ProjectionFilter.html" title="interface in org.apache.drill.exec.physical.resultSet.impl">ProjectionFilter</a> projectionSet)</pre> |
| </li> |
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| <a name="ContainerState-org.apache.drill.exec.physical.resultSet.impl.LoaderInternals-org.apache.drill.exec.physical.resultSet.ResultVectorCache-"> |
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| <h4>ContainerState</h4> |
| <pre>public ContainerState(org.apache.drill.exec.physical.resultSet.impl.LoaderInternals loader, |
| <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/ResultVectorCache.html" title="interface in org.apache.drill.exec.physical.resultSet">ResultVectorCache</a> vectorCache)</pre> |
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| <h4>bindColumnState</h4> |
| <pre>public void bindColumnState(<a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ColumnState.html" title="class in org.apache.drill.exec.physical.resultSet.impl">ColumnState</a> parentState)</pre> |
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| <h4>innerCardinality</h4> |
| <pre>public abstract int innerCardinality()</pre> |
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| <h4>addColumn</h4> |
| <pre>protected abstract void addColumn(<a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ColumnState.html" title="class in org.apache.drill.exec.physical.resultSet.impl">ColumnState</a> colState)</pre> |
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| <h4>columnStates</h4> |
| <pre>protected abstract <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ColumnState.html" title="class in org.apache.drill.exec.physical.resultSet.impl">ColumnState</a>> columnStates()</pre> |
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| <a name="projection--"> |
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| <h4>projection</h4> |
| <pre>protected <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ProjectionFilter.html" title="interface in org.apache.drill.exec.physical.resultSet.impl">ProjectionFilter</a> projection()</pre> |
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| <h4>isVersioned</h4> |
| <pre>protected abstract boolean isVersioned()</pre> |
| <div class="block">Reports whether this container is subject to version management. Version |
| management adds columns to the output container at harvest time based on |
| whether they should appear in the output batch.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><code>true</code> if versioned</dd> |
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| <pre>protected org.apache.drill.exec.physical.resultSet.impl.LoaderInternals loader()</pre> |
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| <h4>vectorCache</h4> |
| <pre>public <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/ResultVectorCache.html" title="interface in org.apache.drill.exec.physical.resultSet">ResultVectorCache</a> vectorCache()</pre> |
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| <h4>addColumn</h4> |
| <pre>public <a href="../../../../../../../org/apache/drill/exec/physical/resultSet/impl/ColumnState.html" title="class in org.apache.drill.exec.physical.resultSet.impl">ColumnState</a> addColumn(<a href="../../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a> columnSchema)</pre> |
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| <h4>updateCardinality</h4> |
| <pre>public void updateCardinality()</pre> |
| <div class="block">In order to allocate the correct-sized vectors, the container must know |
| its member cardinality: the number of elements in each row. This |
| is 1 for a single map or union, but may be any number for a map array |
| or a list. Then, |
| this value is recursively pushed downward to compute the cardinality |
| of lists of maps that contains lists of maps, and so on.</div> |
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| <h4>startBatch</h4> |
| <pre>public void startBatch(boolean schemaOnly)</pre> |
| <div class="block">Start a new batch by shifting the overflow buffers back into the main |
| write vectors and updating the writers.</div> |
| </li> |
| </ul> |
| <a name="rollover--"> |
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| </a> |
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| <li class="blockList"> |
| <h4>rollover</h4> |
| <pre>public void rollover()</pre> |
| <div class="block">A column within the row batch overflowed. Prepare to absorb the rest of the |
| in-flight row by rolling values over to a new vector, saving the complete |
| vector for later. This column could have a value for the overflow row, or |
| for some previous row, depending on exactly when and where the overflow |
| occurs.</div> |
| </li> |
| </ul> |
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| <h4>harvestWithLookAhead</h4> |
| <pre>public void harvestWithLookAhead()</pre> |
| <div class="block">Writing of a row batch is complete, and an overflow occurred. Prepare the |
| vector for harvesting to send downstream. Set aside the look-ahead vector |
| and put the full vector buffer back into the active vector.</div> |
| </li> |
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| <h4>close</h4> |
| <pre>public void close()</pre> |
| <div class="block">Clean up state (such as backup vectors) associated with the state |
| for each vector.</div> |
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