Package org.apache.orc.impl

Class TreeReaderFactory.VarcharTreeReader

java.lang.Object

org.apache.orc.impl.TreeReaderFactory.TreeReader

org.apache.orc.impl.TreeReaderFactory.StringTreeReader

org.apache.orc.impl.TreeReaderFactory.VarcharTreeReader

All Implemented Interfaces:

TypeReader

Enclosing class:

TreeReaderFactory

public static class TreeReaderFactory.VarcharTreeReader
extends TreeReaderFactory.StringTreeReader

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.StringTreeReader

reader

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

columnId, context, present, readerCategory

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	VarcharTreeReader(int columnId, int maxLength, InStream present, InStream data, InStream length, InStream dictionary, OrcProto.ColumnEncoding encoding, TreeReaderFactory.Context context)

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.

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

checkEncoding, 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

Constructor Details

VarcharTreeReader

protected VarcharTreeReader(int columnId,
 int maxLength,
 InStream present,
 InStream data,
 InStream length,
 InStream dictionary,
 OrcProto.ColumnEncoding encoding,
 TreeReaderFactory.Context context)
                     throws IOException

Throws:

IOException

Method Details

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.StringTreeReader

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