org.apache.hadoop.hive.ql.io.orc

Class TreeReaderFactory.StringDirectTreeReader

java.lang.Object

org.apache.hadoop.hive.ql.io.orc.TreeReaderFactory.TreeReader

org.apache.hadoop.hive.ql.io.orc.TreeReaderFactory.StringDirectTreeReader

Enclosing class:

TreeReaderFactory

protected static class TreeReaderFactory.StringDirectTreeReader
extends TreeReaderFactory.TreeReader

A reader for string columns that are direct encoded in the current stripe.

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.hadoop.hive.ql.io.orc.IntegerReader	lengths
protected InStream	stream

Fields inherited from class org.apache.hadoop.hive.ql.io.orc.TreeReaderFactory.TreeReader

columnId, present, valuePresent

Method Summary

Methods

Modifier and Type	Method and Description
Object	nextVector(Object previousVector, long batchSize) Populates the isNull vector array in the previousVector object based on the present stream values.
void	seek(PositionProvider index)

Methods inherited from class org.apache.hadoop.hive.ql.io.orc.TreeReaderFactory.TreeReader

countNonNulls

Methods inherited from class java.lang.Object

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

Field Detail

stream

protected InStream stream

lengths

protected org.apache.hadoop.hive.ql.io.orc.IntegerReader lengths

Method Detail

seek

public void seek(PositionProvider index)
          throws IOException

Overrides:

seek in class TreeReaderFactory.TreeReader

Throws:

IOException

nextVector

public Object nextVector(Object previousVector,
                long batchSize)
                  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.

Overrides:

nextVector in class TreeReaderFactory.TreeReader

Parameters:

previousVector - The columnVector object whose isNull value is populated

batchSize - Size of the column vector

Returns:

next column vector

Throws:

IOException