org.apache.poi.ddf

Class EscherArrayProperty

java.lang.Object

org.apache.poi.ddf.EscherProperty

org.apache.poi.ddf.EscherComplexProperty

org.apache.poi.ddf.EscherArrayProperty

All Implemented Interfaces:

java.lang.Iterable<byte[]>, GenericRecord

public final class EscherArrayProperty
extends EscherComplexProperty
implements java.lang.Iterable<byte[]>

Escher array properties are the most weird construction ever invented with all sorts of special cases. I'm hopeful I've got them all.

Constructor Summary

Constructors

Constructor and Description
EscherArrayProperty(EscherPropertyTypes type, boolean isBlipId, int complexSize) Create an instance of an escher array property.
EscherArrayProperty(short propertyNumber, boolean isBlipId, byte[] complexData) Deprecated. use EscherArrayProperty(EscherPropertyTypes, boolean, int) and EscherComplexProperty.setComplexData(byte[])
EscherArrayProperty(short id, int complexSize) Create an instance of an escher array property.

Method Summary

Modifier and Type	Method and Description
byte[]	getElement(int index)
java.util.Map<java.lang.String,java.util.function.Supplier<?>>	getGenericProperties()
int	getNumberOfElementsInArray()
int	getNumberOfElementsInMemory()
short	getSizeOfElements()
java.util.Iterator<byte[]>	iterator()
int	serializeSimplePart(byte[] data, int pos) Serializes the simple part of this property.
int	setArrayData(byte[] data, int offset) We have this method because the way in which arrays in escher works is screwed for seemly arbitrary reasons.
void	setElement(int index, byte[] element)
void	setNumberOfElementsInArray(int numberOfElements)
void	setNumberOfElementsInMemory(int numberOfElements)
void	setSizeOfElements(int sizeOfElements)

Methods inherited from class org.apache.poi.ddf.EscherComplexProperty

equals, getComplexData, getPropertySize, hashCode, resizeComplexData, resizeComplexData, serializeComplexPart, setComplexData, setComplexData

Methods inherited from class org.apache.poi.ddf.EscherProperty

getGenericChildren, getGenericRecordType, getId, getName, getPropertyNumber, isBlipId, isComplex, toString, toXml

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

EscherArrayProperty

@Internal
public EscherArrayProperty(short id,
                                     int complexSize)

Create an instance of an escher array property. This constructor can be used to create emptyComplexParts with a complexSize = 0. Preferably use EscherArrayProperty(EscherPropertyTypes, boolean, int) with EscherComplexProperty.setComplexData(byte[]).

Parameters:

id - The id consists of the property number, a flag indicating whether this is a blip id and a flag indicating that this is a complex property.

complexSize - the data size

EscherArrayProperty

@Deprecated
 @Removal(version="5.0.0")
public EscherArrayProperty(short propertyNumber,
                                                                  boolean isBlipId,
                                                                  byte[] complexData)

Deprecated. use EscherArrayProperty(EscherPropertyTypes, boolean, int) and EscherComplexProperty.setComplexData(byte[])

Create an instance of an escher array property. This constructor defaults to a 6 bytes header if the complexData is null or byte[0].

Parameters:

propertyNumber - the property number part of the property id

isBlipId - true, if it references a blip

complexData - the data

EscherArrayProperty

public EscherArrayProperty(EscherPropertyTypes type,
                           boolean isBlipId,
                           int complexSize)

Create an instance of an escher array property. This constructor defaults to a 6 bytes header if the complexSize is 0.

Parameters:

type - the property type of the property id

isBlipId - true, if it references a blip

complexSize - the data size

Method Detail

getNumberOfElementsInArray

public int getNumberOfElementsInArray()

setNumberOfElementsInArray

public void setNumberOfElementsInArray(int numberOfElements)

getNumberOfElementsInMemory

public int getNumberOfElementsInMemory()

setNumberOfElementsInMemory

public void setNumberOfElementsInMemory(int numberOfElements)

getSizeOfElements

public short getSizeOfElements()

setSizeOfElements

public void setSizeOfElements(int sizeOfElements)

getElement

public byte[] getElement(int index)

setElement

public void setElement(int index,
                       byte[] element)

setArrayData

public int setArrayData(byte[] data,
                        int offset)

We have this method because the way in which arrays in escher works is screwed for seemly arbitrary reasons. While most properties are fairly consistent and have a predictable array size, escher arrays have special cases.

Parameters:

data - The data array containing the escher array information

offset - The offset into the array to start reading from.

Returns:

the number of bytes used by this complex property.

serializeSimplePart

public int serializeSimplePart(byte[] data,
                               int pos)

Serializes the simple part of this property. ie the first 6 bytes. Needs special code to handle the case when the size doesn't include the size of the header block

Overrides:

serializeSimplePart in class EscherComplexProperty

Parameters:

data - the buffer to write to

pos - the starting position

Returns:

the length of the part

iterator

public java.util.Iterator<byte[]> iterator()

Specified by:

iterator in interface java.lang.Iterable<byte[]>

getGenericProperties

public java.util.Map<java.lang.String,java.util.function.Supplier<?>> getGenericProperties()

Specified by:

getGenericProperties in interface GenericRecord

Overrides:

getGenericProperties in class EscherComplexProperty