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| <h1 title="Package" class="title">Package org.apache.drill.exec.physical.impl.protocol</h1> |
| <div class="docSummary"> |
| <div class="block">Defines a revised implementation of the Drill RecordBatch protocol.</div> |
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| <p>See: <a href="#package.description">Description</a></p> |
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| <td class="colFirst"><a href="../../../../../../../org/apache/drill/exec/physical/impl/protocol/BatchAccessor.html" title="interface in org.apache.drill.exec.physical.impl.protocol">BatchAccessor</a></td> |
| <td class="colLast"> |
| <div class="block">Provides access to the row set (record batch) produced by an |
| operator.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/drill/exec/physical/impl/protocol/OperatorExec.html" title="interface in org.apache.drill.exec.physical.impl.protocol">OperatorExec</a></td> |
| <td class="colLast"> |
| <div class="block">Core protocol for a Drill operator execution.</div> |
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| <td class="colFirst"><a href="../../../../../../../org/apache/drill/exec/physical/impl/protocol/IndirectContainerAccessor.html" title="class in org.apache.drill.exec.physical.impl.protocol">IndirectContainerAccessor</a></td> |
| <td class="colLast"> |
| <div class="block">Extension of the container accessor that holds an optional selection |
| vector, presenting the batch row count as the selection vector |
| count.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/drill/exec/physical/impl/protocol/OperatorDriver.html" title="class in org.apache.drill.exec.physical.impl.protocol">OperatorDriver</a></td> |
| <td class="colLast"> |
| <div class="block">State machine that drives the operator executable.</div> |
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| <td class="colFirst"><a href="../../../../../../../org/apache/drill/exec/physical/impl/protocol/OperatorRecordBatch.html" title="class in org.apache.drill.exec.physical.impl.protocol">OperatorRecordBatch</a></td> |
| <td class="colLast"> |
| <div class="block">Modular implementation of the standard Drill record batch iterator |
| protocol.</div> |
| </td> |
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| <td class="colFirst"><a href="../../../../../../../org/apache/drill/exec/physical/impl/protocol/SchemaTracker.html" title="class in org.apache.drill.exec.physical.impl.protocol">SchemaTracker</a></td> |
| <td class="colLast"> |
| <div class="block">Tracks changes to schemas via "snapshots" over time.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/drill/exec/physical/impl/protocol/VectorContainerAccessor.html" title="class in org.apache.drill.exec.physical.impl.protocol">VectorContainerAccessor</a></td> |
| <td class="colLast"> |
| <div class="block">Wraps a vector container and optional selection vector in an interface |
| simpler than the entire <a href="../../../../../../../org/apache/drill/exec/record/RecordBatch.html" title="interface in org.apache.drill.exec.record"><code>RecordBatch</code></a>.</div> |
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| <td class="colFirst"><a href="../../../../../../../org/apache/drill/exec/physical/impl/protocol/OperatorDriver.State.html" title="enum in org.apache.drill.exec.physical.impl.protocol">OperatorDriver.State</a></td> |
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| <h2 title="Package org.apache.drill.exec.physical.impl.protocol Description">Package org.apache.drill.exec.physical.impl.protocol Description</h2> |
| <div class="block">Defines a revised implementation of the Drill RecordBatch protocol. This |
| version separates concerns into specific classes, and creates as single |
| "shim" class to implement the iterator protocol, deferring to specific |
| classes as needed. |
| <p> |
| This version is an eventual successor to the original implementation which |
| used the "kitchen sink" pattern to combine all functionality into s single, |
| large record batch implementation.</div> |
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