Package org.apache.orc.impl

Class ConvertTreeReaderFactory.StringGroupFromDecimalTreeReader

java.lang.Object

org.apache.orc.impl.TreeReaderFactory.TreeReader

org.apache.orc.impl.ConvertTreeReaderFactory.ConvertTreeReader

org.apache.orc.impl.ConvertTreeReaderFactory.StringGroupFromDecimalTreeReader

All Implemented Interfaces:

TypeReader

Enclosing class:

ConvertTreeReaderFactory

public static class ConvertTreeReaderFactory.StringGroupFromDecimalTreeReader
extends ConvertTreeReaderFactory.ConvertTreeReader

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.orc.impl.reader.tree.TypeReader

TypeReader.ReaderCategory, TypeReader.ReadPhase

Field Summary

Fields inherited from class org.apache.orc.impl.TreeReaderFactory.TreeReader

columnId, context, present, readerCategory

Method Summary

Modifier and Type	Method	Description
void	nextVector(org.apache.hadoop.hive.ql.exec.vector.ColumnVector previousVector, boolean[] isNull, int batchSize, org.apache.hadoop.hive.ql.io.filter.FilterContext filterContext, TypeReader.ReadPhase readPhase)	Populates the isNull vector array in the previousVector object based on the present stream values.
void	setConvertVectorElement(int elementNum)	Override this to use convertVector.

Methods inherited from class org.apache.orc.impl.ConvertTreeReaderFactory.ConvertTreeReader

assignStringGroupVectorEntry, assignStringGroupVectorEntry, checkEncoding, convertStringGroupVectorElement, convertVector, doubleCanFitInLong, downCastAnyInteger, downCastAnyInteger, getIsParseError, integerDownCastNeeded, parseDecimalFromString, parseDoubleFromString, parseFloatFromString, parseLongFromString, seek, seek, skipRows, startStripe

Methods inherited from class org.apache.orc.impl.TreeReaderFactory.TreeReader

countNonNullRowsInRange, countNonNulls, createIntegerReader, getColumnId, getPresent, getReaderCategory

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

setConvertVectorElement

public void setConvertVectorElement(int elementNum)

Description copied from class: ConvertTreeReaderFactory.ConvertTreeReader

Override this to use convertVector. Source and result are member variables in the subclass with the right type.

Overrides:

setConvertVectorElement in class ConvertTreeReaderFactory.ConvertTreeReader

nextVector

public void nextVector(org.apache.hadoop.hive.ql.exec.vector.ColumnVector previousVector,
 boolean[] isNull,
 int batchSize,
 org.apache.hadoop.hive.ql.io.filter.FilterContext filterContext,
 TypeReader.ReadPhase readPhase)
                throws IOException

Description copied from class: TreeReaderFactory.TreeReader

Populates the isNull vector array in the previousVector object based on the present stream values. This function is called from all the child readers, and they all set the values based on isNull field value.

Specified by:

nextVector in interface TypeReader

Overrides:

nextVector in class TreeReaderFactory.TreeReader

Parameters:

previousVector - The columnVector object whose isNull value is populated

isNull - Whether the each value was null at a higher level. If isNull is null, all values are non-null.

batchSize - Size of the column vector

filterContext - the information about the rows that were selected by the filter.

readPhase - The read level

Throws:

IOException