Apache POI - Common 5.3.0 · org.apache.poi.hssf.util.LazilyConcatenatedByteArray

public Class LazilyConcatenatedByteArray

extends Object

Class Inheritance

java.lang.Object
org.apache.poi.hssf.util.LazilyConcatenatedByteArray

Imports

Utility for delaying the concatenation of multiple byte arrays. Doing this up-front causes significantly more copying, which for a large number of byte arrays can cost a large amount of time.

Field Summary

Modifier and Type	Field and Description
private final List<byte[]>	arrays

Constructor Summary

Access	Constructor and Description
public	LazilyConcatenatedByteArray()

Method Summary

Modifier and Type	Method and Description
public void	clear() Clears the array (sets the concatenated length back to zero.
public void	concatenate(byte[] the array to concatenate. array) Concatenates an array onto the end of our array.
public void	concatenate(LazilyConcatenatedByteArray other)
public byte[]	Returns: the byte array. Returns `null` if no data has been placed into it. toArray() Gets the concatenated contents as a single byte array.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

arrays	back to summary
private final List<byte[]> arrays

Constructor Detail

LazilyConcatenatedByteArray	back to summary
public LazilyConcatenatedByteArray()

Method Detail

clear	back to summary
public void clear() Clears the array (sets the concatenated length back to zero.

concatenate back to summary

concatenate	back to summary
public void concatenate(byte[] array) Concatenates an array onto the end of our array. This is a relatively fast operation. Parameters array:byte[] the array to concatenate. Exceptions IllegalArgumentException: if `array` is `null`.

public void concatenate(byte[] array)

Concatenates an array onto the end of our array. This is a relatively fast operation.

Parameters

array:byte[]: the array to concatenate.

Exceptions

IllegalArgumentException:: if array is null.

concatenate	back to summary
public void concatenate(LazilyConcatenatedByteArray other)

toArray back to summary

toArray	back to summary
public byte[] toArray() Gets the concatenated contents as a single byte array. This is a slower operation, but the concatenated array is stored off as a single array again so that subsequent calls will not perform additional copying. Returns:byte[] the byte array. Returns `null` if no data has been placed into it.

public byte[] toArray()

Gets the concatenated contents as a single byte array. This is a slower operation, but the concatenated array is stored off as a single array again so that subsequent calls will not perform additional copying.

Returns:byte[]: the byte array. Returns null if no data has been placed into it.