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<div class="subTitle">org.apache.orc.impl</div>
<h2 title="Class ConvertTreeReaderFactory" class="title">Class ConvertTreeReaderFactory</h2>
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<li><a href="../../../../org/apache/orc/impl/TreeReaderFactory.html" title="class in org.apache.orc.impl">org.apache.orc.impl.TreeReaderFactory</a></li>
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<li>org.apache.orc.impl.ConvertTreeReaderFactory</li>
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<pre>public class <span class="typeNameLabel">ConvertTreeReaderFactory</span>
extends <a href="../../../../org/apache/orc/impl/TreeReaderFactory.html" title="class in org.apache.orc.impl">TreeReaderFactory</a></pre>
<div class="block">Convert ORC tree readers.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/ConvertTreeReaderFactory.AnyIntegerFromAnyIntegerTreeReader.html" title="class in org.apache.orc.impl">ConvertTreeReaderFactory.AnyIntegerFromAnyIntegerTreeReader</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
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<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
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<td class="colFirst"><code>static class&nbsp;</code></td>
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<div class="block">Override methods like checkEncoding to pass-thru to the convert TreeReader.</div>
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<td class="colFirst"><code>static class&nbsp;</code></td>
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<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/ConvertTreeReaderFactory.DoubleFromDecimalTreeReader.html" title="class in org.apache.orc.impl">ConvertTreeReaderFactory.DoubleFromDecimalTreeReader</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>static class&nbsp;</code></td>
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<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/ConvertTreeReaderFactory.TimestampFromAnyIntegerTreeReader.html" title="class in org.apache.orc.impl">ConvertTreeReaderFactory.TimestampFromAnyIntegerTreeReader</a></span></code>&nbsp;</td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/ConvertTreeReaderFactory.TimestampFromDateTreeReader.html" title="class in org.apache.orc.impl">ConvertTreeReaderFactory.TimestampFromDateTreeReader</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/ConvertTreeReaderFactory.TimestampFromDecimalTreeReader.html" title="class in org.apache.orc.impl">ConvertTreeReaderFactory.TimestampFromDecimalTreeReader</a></span></code>&nbsp;</td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/ConvertTreeReaderFactory.TimestampFromDoubleTreeReader.html" title="class in org.apache.orc.impl">ConvertTreeReaderFactory.TimestampFromDoubleTreeReader</a></span></code>&nbsp;</td>
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<h3>Nested classes/interfaces inherited from class&nbsp;org.apache.orc.impl.<a href="../../../../org/apache/orc/impl/TreeReaderFactory.html" title="class in org.apache.orc.impl">TreeReaderFactory</a></h3>
<code><a href="../../../../org/apache/orc/impl/TreeReaderFactory.BinaryTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.BinaryTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.BooleanTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.BooleanTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.BytesColumnVectorUtil.html" title="class in org.apache.orc.impl">TreeReaderFactory.BytesColumnVectorUtil</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.ByteTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.ByteTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.CharTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.CharTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.Context.html" title="interface in org.apache.orc.impl">TreeReaderFactory.Context</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.DateTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.DateTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.Decimal64TreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.Decimal64TreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.DecimalTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.DecimalTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.DoubleTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.DoubleTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.FloatTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.FloatTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.IntTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.IntTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.ListTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.ListTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.LongTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.LongTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.MapTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.MapTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.NullTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.NullTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.ReaderContext.html" title="class in org.apache.orc.impl">TreeReaderFactory.ReaderContext</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.ShortTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.ShortTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.StringDictionaryTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.StringDictionaryTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.StringDirectTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.StringDirectTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.StringTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.StringTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.StructTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.StructTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.TimestampTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.TimestampTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.TreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.TreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.UnionTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.UnionTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.VarcharTreeReader.html" title="class in org.apache.orc.impl">TreeReaderFactory.VarcharTreeReader</a></code></li>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/ConvertTreeReaderFactory.html#ConvertTreeReaderFactory--">ConvertTreeReaderFactory</a></span>()</code>&nbsp;</td>
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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/ConvertTreeReaderFactory.html#canConvert-org.apache.orc.TypeDescription-org.apache.orc.TypeDescription-">canConvert</a></span>(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a>&nbsp;fileType,
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/apache/orc/impl/reader/tree/TypeReader.html" title="interface in org.apache.orc.impl.reader.tree">TypeReader</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/orc/impl/ConvertTreeReaderFactory.html#createConvertTreeReader-org.apache.orc.TypeDescription-org.apache.orc.impl.TreeReaderFactory.Context-">createConvertTreeReader</a></span>(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a>&nbsp;readerType,
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<div class="block">(Rules from Hive's PrimitiveObjectInspectorUtils conversion)

 To BOOLEAN, BYTE, SHORT, INT, LONG:
   Convert from (BOOLEAN, BYTE, SHORT, INT, LONG) with down cast if necessary.</div>
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<h3>Methods inherited from class&nbsp;org.apache.orc.impl.<a href="../../../../org/apache/orc/impl/TreeReaderFactory.html" title="class in org.apache.orc.impl">TreeReaderFactory</a></h3>
<code><a href="../../../../org/apache/orc/impl/TreeReaderFactory.html#createRootReader-org.apache.orc.TypeDescription-org.apache.orc.impl.TreeReaderFactory.Context-">createRootReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.html#createTreeReader-org.apache.orc.TypeDescription-org.apache.orc.impl.TreeReaderFactory.Context-">createTreeReader</a>, <a href="../../../../org/apache/orc/impl/TreeReaderFactory.html#isDecimalAsLong-org.apache.orc.OrcFile.Version-int-">isDecimalAsLong</a></code></li>
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<h3>Methods inherited from class&nbsp;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>
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<h4>ConvertTreeReaderFactory</h4>
<pre>public&nbsp;ConvertTreeReaderFactory()</pre>
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<h4>createConvertTreeReader</h4>
<pre>public static&nbsp;<a href="../../../../org/apache/orc/impl/reader/tree/TypeReader.html" title="interface in org.apache.orc.impl.reader.tree">TypeReader</a>&nbsp;createConvertTreeReader(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a>&nbsp;readerType,
                                                 <a href="../../../../org/apache/orc/impl/TreeReaderFactory.Context.html" title="interface in org.apache.orc.impl">TreeReaderFactory.Context</a>&nbsp;context)
                                          throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">(Rules from Hive's PrimitiveObjectInspectorUtils conversion)

 To BOOLEAN, BYTE, SHORT, INT, LONG:
   Convert from (BOOLEAN, BYTE, SHORT, INT, LONG) with down cast if necessary.
   Convert from (FLOAT, DOUBLE) using type cast to long and down cast if necessary.
   Convert from DECIMAL from longValue and down cast if necessary.
   Convert from STRING using LazyLong.parseLong and down cast if necessary.
   Convert from (CHAR, VARCHAR) from Integer.parseLong and down cast if necessary.
   Convert from TIMESTAMP using timestamp getSeconds and down cast if necessary.

   AnyIntegerFromAnyIntegerTreeReader (written)
   AnyIntegerFromFloatTreeReader (written)
   AnyIntegerFromDoubleTreeReader (written)
   AnyIntegerFromDecimalTreeReader (written)
   AnyIntegerFromStringGroupTreeReader (written)
   AnyIntegerFromTimestampTreeReader (written)

 To FLOAT/DOUBLE:
   Convert from (BOOLEAN, BYTE, SHORT, INT, LONG) using cast
   Convert from FLOAT using cast
   Convert from DECIMAL using getDouble
   Convert from (STRING, CHAR, VARCHAR) using Double.parseDouble
   Convert from TIMESTAMP using timestamp getDouble

   FloatFromAnyIntegerTreeReader (existing)
   FloatFromDoubleTreeReader (written)
   FloatFromDecimalTreeReader (written)
   FloatFromStringGroupTreeReader (written)

   DoubleFromAnyIntegerTreeReader (existing)
   DoubleFromFloatTreeReader (existing)
   DoubleFromDecimalTreeReader (written)
   DoubleFromStringGroupTreeReader (written)

 To DECIMAL:
   Convert from (BOOLEAN, BYTE, SHORT, INT, LONG) using to HiveDecimal.create()
   Convert from (FLOAT, DOUBLE) using to HiveDecimal.create(string value)
   Convert from (STRING, CHAR, VARCHAR) using HiveDecimal.create(string value)
   Convert from TIMESTAMP using HiveDecimal.create(string value of timestamp getDouble)

   DecimalFromAnyIntegerTreeReader (existing)
   DecimalFromFloatTreeReader (existing)
   DecimalFromDoubleTreeReader (existing)
   DecimalFromStringGroupTreeReader (written)

 To STRING, CHAR, VARCHAR:
   Convert from (BYTE, SHORT, INT, LONG) using to string conversion
   Convert from BOOLEAN using boolean (True/False) conversion
   Convert from (FLOAT, DOUBLE) using to string conversion
   Convert from DECIMAL using HiveDecimal.toString
   Convert from CHAR by stripping pads
   Convert from VARCHAR with value
   Convert from TIMESTAMP using Timestamp.toString
   Convert from DATE using Date.toString
   Convert from BINARY using Text.decode

   StringGroupFromAnyIntegerTreeReader (written)
   StringGroupFromBooleanTreeReader (written)
   StringGroupFromFloatTreeReader (written)
   StringGroupFromDoubleTreeReader (written)
   StringGroupFromDecimalTreeReader (written)

   String from Char/Varchar conversion
   Char from String/Varchar conversion
   Varchar from String/Char conversion

   StringGroupFromTimestampTreeReader (written)
   StringGroupFromDateTreeReader (written)
   StringGroupFromBinaryTreeReader *****

 To TIMESTAMP:
   Convert from (BOOLEAN, BYTE, SHORT, INT, LONG) using TimestampWritable.longToTimestamp
   Convert from (FLOAT, DOUBLE) using TimestampWritable.doubleToTimestamp
   Convert from DECIMAL using TimestampWritable.decimalToTimestamp
   Convert from (STRING, CHAR, VARCHAR) using string conversion
   Or, from DATE

   TimestampFromAnyIntegerTreeReader (written)
   TimestampFromFloatTreeReader (written)
   TimestampFromDoubleTreeReader (written)
   TimestampFromDecimalTreeReader (written)
   TimestampFromStringGroupTreeReader (written)
   TimestampFromDateTreeReader


 To DATE:
   Convert from (STRING, CHAR, VARCHAR) using string conversion.
   Or, from TIMESTAMP.

  DateFromStringGroupTreeReader (written)
  DateFromTimestampTreeReader (written)

 To BINARY:
   Convert from (STRING, CHAR, VARCHAR) using getBinaryFromText

  BinaryFromStringGroupTreeReader (written)

 (Notes from StructConverter)

 To STRUCT:
   Input must be data type STRUCT
   minFields = Math.min(numSourceFields, numTargetFields)
   Convert those fields
   Extra targetFields to NULL

 (Notes from ListConverter)

 To LIST:
   Input must be data type LIST
   Convert elements

 (Notes from MapConverter)

 To MAP:
   Input must be data type MAP
   Convert keys and values

 (Notes from UnionConverter)

 To UNION:
   Input must be data type UNION
   Convert value for tag</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>readerType</code> - </dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>public static&nbsp;boolean&nbsp;canConvert(<a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a>&nbsp;fileType,
                                 <a href="../../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a>&nbsp;readerType)</pre>
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