loci.poi.hpsf

Class MutablePropertySet

java.lang.Object

loci.poi.hpsf.PropertySet

loci.poi.hpsf.MutablePropertySet

Direct Known Subclasses:

SpecialPropertySet

public class MutablePropertySet
extends PropertySet

Adds writing support to the PropertySet class.

Please be aware that this class' functionality will be merged into the PropertySet class at a later time, so the API will change.

Since:

2003-02-19

Version:

$Id: MutablePropertySet.java 489730 2006-12-22 19:18:16Z bayard $

Author:

Rainer Klute <klute@rainer-klute.de>

Field Summary

Fields

Modifier and Type	Field and Description
private int	OFFSET_HEADER The length of the property set stream header.

Fields inherited from class loci.poi.hpsf.PropertySet

BYTE_ORDER_ASSERTION, byteOrder, classID, format, FORMAT_ASSERTION, OS_MACINTOSH, OS_WIN16, OS_WIN32, osVersion, sections

Constructor Summary

Constructors

Constructor and Description
MutablePropertySet() Constructs a MutablePropertySet instance.
MutablePropertySet(PropertySet ps) Constructs a MutablePropertySet by doing a deep copy of an existing PropertySet.

Method Summary

Methods

Modifier and Type	Method and Description
void	addSection(Section section) Adds a section to this property set.
void	clearSections() Removes all sections from this property set.
void	setByteOrder(int byteOrder) Sets the "byteOrder" property.
void	setClassID(ClassID classID) Sets the property set stream's low-level "class ID" field.
void	setFormat(int format) Sets the "format" property.
void	setOSVersion(int osVersion) Sets the "osVersion" property.
RandomAccessInputStream	toInputStream() Returns the contents of this property set stream as an input stream.
void	write(DirectoryEntry dir, String name) Writes a property set to a document in a POI filesystem directory.
void	write(OutputStream out) Writes the property set to an output stream.

Methods inherited from class loci.poi.hpsf.PropertySet

equals, getByteOrder, getClassID, getFirstSection, getFormat, getOSVersion, getProperties, getProperty, getPropertyBooleanValue, getPropertyIntValue, getSectionCount, getSections, getSingleSection, hashCode, isDocumentSummaryInformation, isPropertySetStream, isPropertySetStream, isSummaryInformation, toString, wasNull

Methods inherited from class java.lang.Object

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

Field Detail

OFFSET_HEADER

private final int OFFSET_HEADER

The length of the property set stream header.

Constructor Detail

MutablePropertySet

public MutablePropertySet()

Constructs a MutablePropertySet instance. Its primary task is to initialize the immutable field with their proper values. It also sets fields that might change to reasonable defaults.

MutablePropertySet

public MutablePropertySet(PropertySet ps)

Constructs a MutablePropertySet by doing a deep copy of an existing PropertySet. All nested elements, i.e. Sections and Property instances, will be their mutable counterparts in the new MutablePropertySet.

Parameters:

ps - The property set to copy

Method Detail

setByteOrder

public void setByteOrder(int byteOrder)

Sets the "byteOrder" property.

Parameters:

byteOrder - the byteOrder value to set

setFormat

public void setFormat(int format)

Sets the "format" property.

Parameters:

format - the format value to set

setOSVersion

public void setOSVersion(int osVersion)

Sets the "osVersion" property.

Parameters:

osVersion - the osVersion value to set

setClassID

public void setClassID(ClassID classID)

Sets the property set stream's low-level "class ID" field.

Parameters:

classID - The property set stream's low-level "class ID" field.

See Also:

PropertySet.getClassID()

clearSections

public void clearSections()

Removes all sections from this property set.

addSection

public void addSection(Section section)

Adds a section to this property set.

Parameters:

section - The Section to add. It will be appended after any sections that are already present in the property set and thus become the last section.

write

public void write(OutputStream out)
           throws WritingNotSupportedException,
                  IOException

Writes the property set to an output stream.

Parameters:

out - the output stream to write the section to

Throws:

IOException - if an error when writing to the output stream occurs

WritingNotSupportedException - if HPSF does not yet support writing a property's variant type.

toInputStream

public RandomAccessInputStream toInputStream()
                                      throws IOException,
                                             WritingNotSupportedException

Returns the contents of this property set stream as an input stream. The latter can be used for example to write the property set into a POIFS document. The input stream represents a snapshot of the property set. If the latter is modified while the input stream is still being read, the modifications will not be reflected in the input stream but in the MutablePropertySet only.

Returns:

the contents of this property set stream

Throws:

WritingNotSupportedException - if HPSF does not yet support writing of a property's variant type.

IOException - if an I/O exception occurs.

write

public void write(DirectoryEntry dir,
         String name)
           throws WritingNotSupportedException,
                  IOException

Writes a property set to a document in a POI filesystem directory.

Parameters:

dir - The directory in the POI filesystem to write the document to.

name - The document's name. If there is already a document with the same name in the directory the latter will be overwritten.

Throws:

WritingNotSupportedException

IOException