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| <div class="subTitle">org.apache.orc.impl</div> |
| <h2 title="Class SchemaEvolution" class="title">Class SchemaEvolution</h2> |
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| <ul class="inheritance"> |
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| <li>org.apache.orc.impl.SchemaEvolution</li> |
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| <pre>public class <span class="typeNameLabel">SchemaEvolution</span> |
| extends <a href="http://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">Infer and track the evolution between the schema as stored in the file and |
| the schema that has been requested by the reader.</div> |
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| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.IllegalEvolutionException.html" title="class in org.apache.orc.impl">SchemaEvolution.IllegalEvolutionException</a></span></code> </td> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#SchemaEvolution-org.apache.orc.TypeDescription-boolean:A-">SchemaEvolution</a></span>(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> fileSchema, |
| boolean[] readerIncluded)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#SchemaEvolution-org.apache.orc.TypeDescription-org.apache.orc.TypeDescription-boolean:A-">SchemaEvolution</a></span>(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> fileSchema, |
| <a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> readerSchema, |
| boolean[] readerIncluded)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#SchemaEvolution-org.apache.orc.TypeDescription-org.apache.orc.TypeDescription-org.apache.orc.Reader.Options-">SchemaEvolution</a></span>(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> fileSchema, |
| <a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> readerSchema, |
| <a href="../../../../org/apache/orc/Reader.Options.html" title="class in org.apache.orc">Reader.Options</a> options)</code> </td> |
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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> |
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| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#checkAcidSchema-org.apache.orc.TypeDescription-">checkAcidSchema</a></span>(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> type)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#createEventSchema-org.apache.orc.TypeDescription-">createEventSchema</a></span>(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> typeDescr)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#getBaseRow-org.apache.orc.TypeDescription-">getBaseRow</a></span>(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> typeDescription)</code> |
| <div class="block">Get the underlying base row from an ACID event struct.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>boolean[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#getFileIncluded--">getFileIncluded</a></span>()</code> |
| <div class="block">Get whether each column is included from the file's point of view.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#getFileSchema--">getFileSchema</a></span>()</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#getFileType-int-">getFileType</a></span>(int id)</code> |
| <div class="block">Get the file type by reader type id.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#getFileType-org.apache.orc.TypeDescription-">getFileType</a></span>(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> readerType)</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#getPositionalColumns--">getPositionalColumns</a></span>()</code> |
| <div class="block">Get whether the columns are handled via position or name</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#getReaderBaseSchema--">getReaderBaseSchema</a></span>()</code> |
| <div class="block">Returns the non-ACID (aka base) reader type description.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>boolean[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#getReaderIncluded--">getReaderIncluded</a></span>()</code> |
| <div class="block">Get whether each column is included from the reader's point of view.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#getReaderSchema--">getReaderSchema</a></span>()</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#hasConversion--">hasConversion</a></span>()</code> |
| <div class="block">Is there Schema Evolution data type conversion?</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#includeReaderColumn-int-">includeReaderColumn</a></span>(int readerId)</code> |
| <div class="block">Should we read the given reader column?</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#isOnlyImplicitConversion--">isOnlyImplicitConversion</a></span>()</code> |
| <div class="block">When there Schema Evolution data type conversion i.e.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/SchemaEvolution.html#isPPDSafeConversion-int-">isPPDSafeConversion</a></span>(int colId)</code> |
| <div class="block">Check if column is safe for ppd evaluation</div> |
| </td> |
| </tr> |
| </table> |
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| <h3>Methods inherited from class java.lang.<a href="http://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="http://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="http://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="http://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="http://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="http://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="http://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="http://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="http://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="http://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="http://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="http://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> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| <h3>Constructor Detail</h3> |
| <a name="SchemaEvolution-org.apache.orc.TypeDescription-org.apache.orc.TypeDescription-org.apache.orc.Reader.Options-"> |
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| </a> |
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| <h4>SchemaEvolution</h4> |
| <pre>public SchemaEvolution(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> fileSchema, |
| <a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> readerSchema, |
| <a href="../../../../org/apache/orc/Reader.Options.html" title="class in org.apache.orc">Reader.Options</a> options)</pre> |
| </li> |
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| <a name="SchemaEvolution-org.apache.orc.TypeDescription-boolean:A-"> |
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| <h4>SchemaEvolution</h4> |
| <pre><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a> |
| public SchemaEvolution(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> fileSchema, |
| boolean[] readerIncluded)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| </li> |
| </ul> |
| <a name="SchemaEvolution-org.apache.orc.TypeDescription-org.apache.orc.TypeDescription-boolean:A-"> |
| <!-- --> |
| </a> |
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| <h4>SchemaEvolution</h4> |
| <pre><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a> |
| public SchemaEvolution(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> fileSchema, |
| <a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> readerSchema, |
| boolean[] readerIncluded)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
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| </a> |
| <h3>Method Detail</h3> |
| <a name="getReaderSchema--"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>getReaderSchema</h4> |
| <pre>public <a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> getReaderSchema()</pre> |
| </li> |
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| <a name="getReaderBaseSchema--"> |
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| <h4>getReaderBaseSchema</h4> |
| <pre>public <a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> getReaderBaseSchema()</pre> |
| <div class="block">Returns the non-ACID (aka base) reader type description.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the reader type ignoring the ACID rowid columns, if any</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="hasConversion--"> |
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| <h4>hasConversion</h4> |
| <pre>public boolean hasConversion()</pre> |
| <div class="block">Is there Schema Evolution data type conversion?</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| </dl> |
| </li> |
| </ul> |
| <a name="isOnlyImplicitConversion--"> |
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| </a> |
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| <h4>isOnlyImplicitConversion</h4> |
| <pre>public boolean isOnlyImplicitConversion()</pre> |
| <div class="block">When there Schema Evolution data type conversion i.e. hasConversion() returns true, |
| is the conversion only the implicit kind? |
| |
| (see aaa).</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| </dl> |
| </li> |
| </ul> |
| <a name="getFileSchema--"> |
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| </a> |
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| <h4>getFileSchema</h4> |
| <pre>public <a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> getFileSchema()</pre> |
| </li> |
| </ul> |
| <a name="getFileType-org.apache.orc.TypeDescription-"> |
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| </a> |
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| <h4>getFileType</h4> |
| <pre>public <a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> getFileType(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> readerType)</pre> |
| </li> |
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| <a name="getFileType-int-"> |
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| </a> |
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| <h4>getFileType</h4> |
| <pre>public <a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> getFileType(int id)</pre> |
| <div class="block">Get the file type by reader type id.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>id</code> - reader column id</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| </dl> |
| </li> |
| </ul> |
| <a name="getReaderIncluded--"> |
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| <h4>getReaderIncluded</h4> |
| <pre>public boolean[] getReaderIncluded()</pre> |
| <div class="block">Get whether each column is included from the reader's point of view.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a boolean array indexed by reader column id</dd> |
| </dl> |
| </li> |
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| <a name="getFileIncluded--"> |
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| <li class="blockList"> |
| <h4>getFileIncluded</h4> |
| <pre>public boolean[] getFileIncluded()</pre> |
| <div class="block">Get whether each column is included from the file's point of view.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a boolean array indexed by file column id</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getPositionalColumns--"> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getPositionalColumns</h4> |
| <pre>public boolean getPositionalColumns()</pre> |
| <div class="block">Get whether the columns are handled via position or name</div> |
| </li> |
| </ul> |
| <a name="isPPDSafeConversion-int-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isPPDSafeConversion</h4> |
| <pre>public boolean isPPDSafeConversion(int colId)</pre> |
| <div class="block">Check if column is safe for ppd evaluation</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>colId</code> - reader column id</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the specified column is safe for ppd evaluation else false</dd> |
| </dl> |
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| </ul> |
| <a name="includeReaderColumn-int-"> |
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| <li class="blockList"> |
| <h4>includeReaderColumn</h4> |
| <pre>public boolean includeReaderColumn(int readerId)</pre> |
| <div class="block">Should we read the given reader column?</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>readerId</code> - the id of column in the extended reader schema</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the column should be read</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="checkAcidSchema-org.apache.orc.TypeDescription-"> |
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| <h4>checkAcidSchema</h4> |
| <pre>public static boolean checkAcidSchema(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> type)</pre> |
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| <h4>createEventSchema</h4> |
| <pre>public static <a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> createEventSchema(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> typeDescr)</pre> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>typeDescr</code> - </dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>ORC types for the ACID event based on the row's type description</dd> |
| </dl> |
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| <a name="getBaseRow-org.apache.orc.TypeDescription-"> |
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| <h4>getBaseRow</h4> |
| <pre>public static <a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> getBaseRow(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a> typeDescription)</pre> |
| <div class="block">Get the underlying base row from an ACID event struct.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>typeDescription</code> - the ACID event schema.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the subtype for the real row</dd> |
| </dl> |
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