org.apache.sysds.runtime.compress.colgroup.offset

Class OffsetChar

java.lang.Object

org.apache.sysds.runtime.compress.colgroup.offset.AOffset

org.apache.sysds.runtime.compress.colgroup.offset.OffsetChar

public class OffsetChar
extends AOffset

Constructor Summary

Constructors

Constructor and Description
OffsetChar(int[] indexes)

Method Summary

Modifier and Type	Method and Description
long	getExactSizeOnDisk() Remember to include the ordinal of the type of offset list.
long	getInMemorySize() Get the in memory size of the Offset object
static long	getInMemorySize(int length)
org.apache.sysds.runtime.compress.colgroup.offset.OffsetChar.IterateCharOffset	getIterator() Get an iterator of the offsets.
int	getSize() Get the number of contained elements, This method iterate the entire offset list, so it is not constant lookup.
static OffsetChar	readFields(DataInput in)
void	write(DataOutput out) Write the offsets to disk.

Methods inherited from class org.apache.sysds.runtime.compress.colgroup.offset.AOffset

getIterator, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

OffsetChar

public OffsetChar(int[] indexes)

Method Detail

getIterator

public org.apache.sysds.runtime.compress.colgroup.offset.OffsetChar.IterateCharOffset getIterator()

Description copied from class: AOffset

Get an iterator of the offsets.

Specified by:

getIterator in class AOffset

Returns:

AIterator that iterate through index and dictionary offset values.

write

public void write(DataOutput out)
           throws IOException

Description copied from class: AOffset

Write the offsets to disk. If you implement another remember to write the ordinal of the new type to disk as well and add it to the OffsetFactory.

Specified by:

write in class AOffset

Parameters:

out - The output to write to

Throws:

IOException - Exception that happens if the IO fails to write.

getInMemorySize

public long getInMemorySize()

Description copied from class: AOffset

Get the in memory size of the Offset object

Specified by:

getInMemorySize in class AOffset

Returns:

In memory size as a long.

getExactSizeOnDisk

public long getExactSizeOnDisk()

Description copied from class: AOffset

Remember to include the ordinal of the type of offset list.

Specified by:

getExactSizeOnDisk in class AOffset

Returns:

the size on disk as a long.

getSize

public int getSize()

Description copied from class: AOffset

Get the number of contained elements, This method iterate the entire offset list, so it is not constant lookup.

Specified by:

getSize in class AOffset

Returns:

The number of indexes.

readFields

public static OffsetChar readFields(DataInput in)
                             throws IOException

Throws:

IOException

getInMemorySize

public static long getInMemorySize(int length)