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

Class TreeReaderFactory.TreeReader

java.lang.Object

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

Direct Known Subclasses:

TreeReaderFactory.BinaryTreeReader, TreeReaderFactory.BooleanTreeReader, TreeReaderFactory.ByteTreeReader, TreeReaderFactory.DateTreeReader, TreeReaderFactory.DecimalTreeReader, TreeReaderFactory.DoubleTreeReader, TreeReaderFactory.FloatTreeReader, TreeReaderFactory.IntTreeReader, TreeReaderFactory.ListTreeReader, TreeReaderFactory.LongTreeReader, TreeReaderFactory.MapTreeReader, TreeReaderFactory.ShortTreeReader, TreeReaderFactory.StringDictionaryTreeReader, TreeReaderFactory.StringDirectTreeReader, TreeReaderFactory.StringTreeReader, TreeReaderFactory.StructTreeReader, TreeReaderFactory.TimestampTreeReader, TreeReaderFactory.UnionTreeReader

Enclosing class:

TreeReaderFactory

protected abstract static class TreeReaderFactory.TreeReader
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected int	columnId
protected org.apache.hadoop.hive.ql.io.orc.BitFieldReader	present
protected boolean	valuePresent

Method Summary

Methods

Modifier and Type	Method and Description
protected long	countNonNulls(long rows)
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 java.lang.Object

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

Field Detail

columnId

protected final int columnId

present

protected org.apache.hadoop.hive.ql.io.orc.BitFieldReader present

valuePresent

protected boolean valuePresent

Method Detail

seek

public void seek(PositionProvider index)
          throws IOException

Throws:

IOException

countNonNulls

protected long countNonNulls(long rows)
                      throws IOException

Throws:

IOException

nextVector

public Object nextVector(Object previousVector,
                long batchSize)
                  throws IOException

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.

Parameters:

previousVector - The columnVector object whose isNull value is populated

batchSize - Size of the column vector

Returns:

next column vector

Throws:

IOException