com.facebook.hive.orc.lazy

Class LazyIntTreeReader

java.lang.Object

com.facebook.hive.orc.lazy.LazyTreeReader

com.facebook.hive.orc.lazy.LazyIntTreeReader

Direct Known Subclasses:

LazyLongTreeReader, LazyShortTreeReader

public class LazyIntTreeReader
extends LazyTreeReader

Field Summary

Fields

Modifier and Type	Field and Description
protected LazyTreeReader	reader

Fields inherited from class com.facebook.hive.orc.lazy.LazyTreeReader

columnId, previousPresentRow, previousRow, previousRowIndexEntry, rowBaseInStripe, rowIndexStride, valuePresent

Constructor Summary

Constructors

Constructor and Description
LazyIntTreeReader(int columnId, long rowIndexStride)

Method Summary

Modifier and Type	Method and Description
void	close()
Object	createWritableFromLatest(Object previous) When a client asks for a writable object after materializing a primitive, create a writable from previous value read from stream.
Object	get(long currentRow, Object previous) Returns the value corresponding to currentRow, suitable for calling from outside
boolean	getBoolean(long currentRow)
double	getDouble(long currentRow)
float	getFloat(long currentRow)
Object	getInComplexType(Object previous, long row) Should be called only from containers (lists, maps, structs, unions) since for these tree readers the number of rows does not correspond to the number of values (e.g.
int	getInt(long currentRow)
long	getLong(long currentRow)
short	getShort(long currentRow)
int	loadIndeces(List<OrcProto.RowIndexEntry> rowIndexEntries, int startIndex) Read any indeces that will be needed and return a startIndex after the values that have been read.
Object	next(Object previous) Should only be called from within the tree reader once it's been checked that the next object isn't null
boolean	nextBoolean(boolean readStream)
double	nextDouble(boolean readStream)
float	nextFloat(boolean readStream)
int	nextInt(boolean readStream)
boolean	nextIsNull(long currentRow) Returns whether or not the value corresponding to currentRow is null, suitable for calling from outside
boolean	nextIsNullInComplexType() Should be called only from containers (lists, maps, structs, unions) since for these tree readers the number of rows does not correspond to the number of values (e.g.
long	nextLong(boolean readStream)
short	nextShort(boolean readStream)
void	seek(int index)
protected void	seek(int rowIndexEntry, boolean backwards) Adjust all streams to the beginning of the row index entry specified, backwards means that a previous value is being read and forces the index entry to be restarted, otherwise, has no effect if we're already in the current index entry
void	skipRows(long numNonNullValues) Should only be called from within the tree reader once numNonNulls has been set correctly
void	skipRowsInComplexType(long numRows) Should be called only from containers (lists, maps, structs, unions) since for these tree readers the number of rows does not correspond to the number of values (e.g.
void	startStripe(Map<StreamName,InStream> streams, List<OrcProto.ColumnEncoding> encodings, OrcProto.RowIndex[] indexes, long rowBaseInStripe)

Methods inherited from class com.facebook.hive.orc.lazy.LazyTreeReader

computeRowIndexEntry, countNonNulls, seekToPresentRow, seekToRow

Methods inherited from class java.lang.Object

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

Field Detail

reader

protected LazyTreeReader reader

Constructor Detail

LazyIntTreeReader

public LazyIntTreeReader(int columnId,
                         long rowIndexStride)

Method Detail

startStripe

public void startStripe(Map<StreamName,InStream> streams,
                        List<OrcProto.ColumnEncoding> encodings,
                        OrcProto.RowIndex[] indexes,
                        long rowBaseInStripe)
                 throws IOException

Overrides:

startStripe in class LazyTreeReader

Throws:

IOException

seek

public void seek(int index)
          throws IOException

Specified by:

seek in class LazyTreeReader

Throws:

IOException

loadIndeces

public int loadIndeces(List<OrcProto.RowIndexEntry> rowIndexEntries,
                       int startIndex)

Description copied from class: LazyTreeReader

Read any indeces that will be needed and return a startIndex after the values that have been read.

Overrides:

loadIndeces in class LazyTreeReader

seek

protected void seek(int rowIndexEntry,
                    boolean backwards)
             throws IOException

Description copied from class: LazyTreeReader

Adjust all streams to the beginning of the row index entry specified, backwards means that a previous value is being read and forces the index entry to be restarted, otherwise, has no effect if we're already in the current index entry

Overrides:

seek in class LazyTreeReader

Throws:

IOException

nextIsNull

public boolean nextIsNull(long currentRow)
                   throws IOException

Description copied from class: LazyTreeReader

Returns whether or not the value corresponding to currentRow is null, suitable for calling from outside

Overrides:

nextIsNull in class LazyTreeReader

Returns:

Throws:

IOException

nextIsNullInComplexType

public boolean nextIsNullInComplexType()
                                throws IOException

Description copied from class: LazyTreeReader

Should be called only from containers (lists, maps, structs, unions) since for these tree readers the number of rows does not correspond to the number of values (e.g. there may be many more if it contains the entries in lists with more than one element, or much less if it is the fields in a struct where every other struct is null)

Overrides:

nextIsNullInComplexType in class LazyTreeReader

Returns:

Throws:

IOException

getInComplexType

public Object getInComplexType(Object previous,
                               long row)
                        throws IOException

Description copied from class: LazyTreeReader

Should be called only from containers (lists, maps, structs, unions) since for these tree readers the number of rows does not correspond to the number of values (e.g. there may be many more if it contains the entries in lists with more than one element, or much less if it is the fields in a struct where every other struct is null)

Overrides:

getInComplexType in class LazyTreeReader

Returns:

Throws:

IOException

get

public Object get(long currentRow,
                  Object previous)
           throws IOException

Description copied from class: LazyTreeReader

Returns the value corresponding to currentRow, suitable for calling from outside

Overrides:

get in class LazyTreeReader

Returns:

Throws:

IOException

getBoolean

public boolean getBoolean(long currentRow)
                   throws IOException

Overrides:

getBoolean in class LazyTreeReader

Throws:

IOException

getLong

public long getLong(long currentRow)
             throws IOException

Overrides:

getLong in class LazyTreeReader

Throws:

IOException

getInt

public int getInt(long currentRow)
           throws IOException

Overrides:

getInt in class LazyTreeReader

Throws:

IOException

getShort

public short getShort(long currentRow)
               throws IOException

Overrides:

getShort in class LazyTreeReader

Throws:

IOException

getDouble

public double getDouble(long currentRow)
                 throws IOException

Overrides:

getDouble in class LazyTreeReader

Throws:

IOException

getFloat

public float getFloat(long currentRow)
               throws IOException

Overrides:

getFloat in class LazyTreeReader

Throws:

IOException

next

public Object next(Object previous)
            throws IOException

Description copied from class: LazyTreeReader

Should only be called from within the tree reader once it's been checked that the next object isn't null

Specified by:

next in class LazyTreeReader

Returns:

Throws:

IOException

skipRowsInComplexType

public void skipRowsInComplexType(long numRows)
                           throws IOException

Description copied from class: LazyTreeReader

Should be called only from containers (lists, maps, structs, unions) since for these tree readers the number of rows does not correspond to the number of values (e.g. there may be many more if it contains the entries in lists with more than one element, or much less if it is the fields in a struct where every other struct is null)

Overrides:

skipRowsInComplexType in class LazyTreeReader

Throws:

IOException

skipRows

public void skipRows(long numNonNullValues)
              throws IOException

Description copied from class: LazyTreeReader

Should only be called from within the tree reader once numNonNulls has been set correctly

Specified by:

skipRows in class LazyTreeReader

Throws:

IOException

createWritableFromLatest

public Object createWritableFromLatest(Object previous)
                                throws IOException

Description copied from class: LazyTreeReader

When a client asks for a writable object after materializing a primitive, create a writable from previous value read from stream.

Overrides:

createWritableFromLatest in class LazyTreeReader

Throws:

IOException

nextBoolean

public boolean nextBoolean(boolean readStream)
                    throws IOException

Overrides:

nextBoolean in class LazyTreeReader

Throws:

IOException

nextShort

public short nextShort(boolean readStream)
                throws IOException

Overrides:

nextShort in class LazyTreeReader

Throws:

IOException

nextInt

public int nextInt(boolean readStream)
            throws IOException

Overrides:

nextInt in class LazyTreeReader

Throws:

IOException

nextLong

public long nextLong(boolean readStream)
              throws IOException

Overrides:

nextLong in class LazyTreeReader

Throws:

IOException

nextFloat

public float nextFloat(boolean readStream)
                throws IOException

Overrides:

nextFloat in class LazyTreeReader

Throws:

IOException

nextDouble

public double nextDouble(boolean readStream)
                  throws IOException

Overrides:

nextDouble in class LazyTreeReader

Throws:

IOException

close

public void close()
           throws IOException

Overrides:

close in class LazyTreeReader

Throws:

IOException