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 <h2 title="Class TestProjectEmitOutcome" class="title">Class TestProjectEmitOutcome</h2>
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 <pre>public class <span class="typeNameLabel">TestProjectEmitOutcome</span>
 extends <a href="../../../../../../../org/apache/drill/exec/physical/impl/BaseTestOpBatchEmitOutcome.html" title="class in org.apache.drill.exec.physical.impl">BaseTestOpBatchEmitOutcome</a></pre>
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 <h3>Nested classes/interfaces inherited from class&nbsp;org.apache.drill.test.<a href="../../../../../../../org/apache/drill/test/PhysicalOpUnitTestBase.html" title="class in org.apache.drill.test">PhysicalOpUnitTestBase</a></h3>
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 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/project/TestProjectEmitOutcome.html#TestProjectEmitOutcome--">TestProjectEmitOutcome</a></span>()</code>&nbsp;</td>
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 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/project/TestProjectEmitOutcome.html#testProjectEmptyBatchEmitOutcome--">testProjectEmptyBatchEmitOutcome</a></span>()</code>
 <div class="block">Test that if empty input batch is received with OK_NEW_SCHEMA or EMIT
  outcome, then Project doesn't ignores these empty batches and instead
  return them downstream with correct outcomes.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/project/TestProjectEmitOutcome.html#testProjectNonEmptyBatchEmitOutcome--">testProjectNonEmptyBatchEmitOutcome</a></span>()</code>
 <div class="block">Test to show if a non-empty batch is accompanied with EMIT outcome then
  Project operator produces output for that batch and return the output using
  EMIT outcome.</div>
 </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/impl/project/TestProjectEmitOutcome.html#testProjectNonEmptyFirst_EmptyBatchEmitOutcome--">testProjectNonEmptyFirst_EmptyBatchEmitOutcome</a></span>()</code>
 <div class="block">Test to show that non-empty first batch produces output for that batch with OK_NEW_SCHEMA and later empty batch
  with EMIT outcome is also passed through rather than getting ignored.</div>
 </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/impl/project/TestProjectEmitOutcome.html#testProjectNonEmptyFirst_EmptyOK_EmptyBatchEmitOutcome--">testProjectNonEmptyFirst_EmptyOK_EmptyBatchEmitOutcome</a></span>()</code>
 <div class="block">Test to show if an empty batch is accompanied with OK outcome then that batch is ignored by Project operator and
  it doesn't return anything instead call's next() to get another batch.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/project/TestProjectEmitOutcome.html#testProjectWithComplexWritersAndEmitOutcome_EmptyFirstBatch--">testProjectWithComplexWritersAndEmitOutcome_EmptyFirstBatch</a></span>()</code>
 <div class="block">Test to show that in cases with functions in project list whose output is complex types, if Project sees an EMIT
  outcome then it fails.</div>
 </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/impl/project/TestProjectEmitOutcome.html#testProjectWithComplexWritersAndEmitOutcome_NonEmptyFirstBatch--">testProjectWithComplexWritersAndEmitOutcome_NonEmptyFirstBatch</a></span>()</code>
 <div class="block">Test to show that in cases with functions in project list whose output is complex types, if Project sees an EMIT
  outcome then it fails.</div>
 </td>
 </tr>
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 <h3>Methods inherited from class&nbsp;org.apache.drill.exec.physical.impl.<a href="../../../../../../../org/apache/drill/exec/physical/impl/BaseTestOpBatchEmitOutcome.html" title="class in org.apache.drill.exec.physical.impl">BaseTestOpBatchEmitOutcome</a></h3>
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 <pre>public&nbsp;TestProjectEmitOutcome()</pre>
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 <pre>public&nbsp;void&nbsp;testProjectEmptyBatchEmitOutcome()
                                       throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></pre>
 <div class="block">Test that if empty input batch is received with OK_NEW_SCHEMA or EMIT
  outcome, then Project doesn't ignores these empty batches and instead
  return them downstream with correct outcomes.</div>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></code></dd>
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 <pre>public&nbsp;void&nbsp;testProjectNonEmptyBatchEmitOutcome()
                                          throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></pre>
 <div class="block">Test to show if a non-empty batch is accompanied with EMIT outcome then
  Project operator produces output for that batch and return the output using
  EMIT outcome.</div>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></code></dd>
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 <pre>public&nbsp;void&nbsp;testProjectNonEmptyFirst_EmptyBatchEmitOutcome()
                                                     throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></pre>
 <div class="block">Test to show that non-empty first batch produces output for that batch with OK_NEW_SCHEMA and later empty batch
  with EMIT outcome is also passed through rather than getting ignored.</div>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></code></dd>
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 <pre>public&nbsp;void&nbsp;testProjectNonEmptyFirst_EmptyOK_EmptyBatchEmitOutcome()
                                                             throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></pre>
 <div class="block">Test to show if an empty batch is accompanied with OK outcome then that batch is ignored by Project operator and
  it doesn't return anything instead call's next() to get another batch. If the subsequent next() call returns empty
  batch with EMIT outcome then Project returns the EMIT outcome correctly rather than ignoring it because of empty
  batch.</div>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></code></dd>
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 <pre>public&nbsp;void&nbsp;testProjectWithComplexWritersAndEmitOutcome_NonEmptyFirstBatch()
                                                                     throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></pre>
 <div class="block">Test to show that in cases with functions in project list whose output is complex types, if Project sees an EMIT
  outcome then it fails. This scenario can happen when complex functions are used in subquery between LATERAL and
  UNNEST. In which case guidance is to use those functions in project list of outermost query.
  Below test passes first batch as non-empty with OK_NEW_SCHEMA during which complex writers are cached for
  projected columns and later when an empty batch arrives with EMIT outcome the exception is thrown.</div>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></code></dd>
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 <pre>public&nbsp;void&nbsp;testProjectWithComplexWritersAndEmitOutcome_EmptyFirstBatch()
                                                                  throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></pre>
 <div class="block">Test to show that in cases with functions in project list whose output is complex types, if Project sees an EMIT
  outcome then it fails. This scenario can happen when complex functions are used in subquery between LATERAL and
  UNNEST. In which case guidance is to use those functions in project list of outermost query.

  Below test passes first batch as empty with OK_NEW_SCHEMA during which complex writers are not known so far
  and Project calls next() on upstream to get a batch with data. But later when an empty batch arrives with EMIT
  outcome the exception is thrown as the scenario is not supported</div>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></code></dd>
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