Package org.apache.pdfbox.pdmodel

Class DefaultResourceCache

java.lang.Object

org.apache.pdfbox.pdmodel.DefaultResourceCache

All Implemented Interfaces:

ResourceCache

public class DefaultResourceCache
extends java.lang.Object
implements ResourceCache

A resource cached based on SoftReference, retains resources until memory pressure causes them to be garbage collected.

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.Map<COSObject,java.lang.ref.SoftReference<PDColorSpace>>	colorSpaces
private java.util.Map<COSObject,java.lang.ref.SoftReference<PDExtendedGraphicsState>>	extGStates
private java.util.Map<COSObject,java.lang.ref.SoftReference<PDFont>>	fonts
private java.util.Map<COSObject,java.lang.ref.SoftReference<PDAbstractPattern>>	patterns
private java.util.Map<COSObject,java.lang.ref.SoftReference<PDPropertyList>>	properties
private java.util.Map<COSObject,java.lang.ref.SoftReference<PDShading>>	shadings
private java.util.Map<COSObject,java.lang.ref.SoftReference<PDXObject>>	xobjects

Constructor Summary

Constructors

Constructor	Description
DefaultResourceCache()

Method Summary

Modifier and Type	Method	Description
PDColorSpace	getColorSpace(COSObject indirect)	Returns the color space resource for the given indirect object, if it is in the cache.
PDExtendedGraphicsState	getExtGState(COSObject indirect)	Returns the extended graphics state resource for the given indirect object, if it is in the cache.
PDFont	getFont(COSObject indirect)	Returns the font resource for the given indirect object, if it is in the cache.
PDAbstractPattern	getPattern(COSObject indirect)	Returns the pattern resource for the given indirect object, if it is in the cache.
PDPropertyList	getProperties(COSObject indirect)	Returns the property list resource for the given indirect object, if it is in the cache.
PDShading	getShading(COSObject indirect)	Returns the shading resource for the given indirect object, if it is in the cache.
PDXObject	getXObject(COSObject indirect)	Returns the XObject resource for the given indirect object, if it is in the cache.
void	put(COSObject indirect, PDPropertyList propertyList)	Puts the given indirect property list resource in the cache.
void	put(COSObject indirect, PDFont font)	Puts the given indirect font resource in the cache.
void	put(COSObject indirect, PDColorSpace colorSpace)	Puts the given indirect color space resource in the cache.
void	put(COSObject indirect, PDAbstractPattern pattern)	Puts the given indirect pattern resource in the cache.
void	put(COSObject indirect, PDXObject xobject)	Puts the given indirect XObject resource in the cache.
void	put(COSObject indirect, PDShading shading)	Puts the given indirect shading resource in the cache.
void	put(COSObject indirect, PDExtendedGraphicsState extGState)	Puts the given indirect extended graphics state resource in the cache.

Methods inherited from class java.lang.Object

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

Field Detail

fonts

private final java.util.Map<COSObject,java.lang.ref.SoftReference<PDFont>> fonts

colorSpaces

private final java.util.Map<COSObject,java.lang.ref.SoftReference<PDColorSpace>> colorSpaces

xobjects

private final java.util.Map<COSObject,java.lang.ref.SoftReference<PDXObject>> xobjects

extGStates

private final java.util.Map<COSObject,java.lang.ref.SoftReference<PDExtendedGraphicsState>> extGStates

shadings

private final java.util.Map<COSObject,java.lang.ref.SoftReference<PDShading>> shadings

patterns

private final java.util.Map<COSObject,java.lang.ref.SoftReference<PDAbstractPattern>> patterns

properties

private final java.util.Map<COSObject,java.lang.ref.SoftReference<PDPropertyList>> properties

Constructor Detail

DefaultResourceCache

public DefaultResourceCache()

Method Detail

getFont

public PDFont getFont(COSObject indirect)

Description copied from interface: ResourceCache

Returns the font resource for the given indirect object, if it is in the cache.

Specified by:

getFont in interface ResourceCache

Parameters:

indirect - the indirect reference of the font to be returned

Returns:

the cached instance of the referenced font, if available

put

public void put(COSObject indirect,
                PDFont font)

Description copied from interface: ResourceCache

Puts the given indirect font resource in the cache.

Specified by:

put in interface ResourceCache

Parameters:

indirect - the indirect reference of the font to be cached

font - the font to be cached

getColorSpace

public PDColorSpace getColorSpace(COSObject indirect)

Description copied from interface: ResourceCache

Returns the color space resource for the given indirect object, if it is in the cache.

Specified by:

getColorSpace in interface ResourceCache

Parameters:

indirect - the indirect reference of the colorspace to be returned

Returns:

the cached instance of the referenced colorspace, if available

put

public void put(COSObject indirect,
                PDColorSpace colorSpace)

Description copied from interface: ResourceCache

Puts the given indirect color space resource in the cache.

Specified by:

put in interface ResourceCache

Parameters:

indirect - the indirect reference of the colorspace to be cached

colorSpace - the colorspace to be cached

getExtGState

public PDExtendedGraphicsState getExtGState(COSObject indirect)

Description copied from interface: ResourceCache

Returns the extended graphics state resource for the given indirect object, if it is in the cache.

Specified by:

getExtGState in interface ResourceCache

Parameters:

indirect - the indirect reference of the extended graphics state to be returned

Returns:

the cached instance of the referenced extended graphics state, if available

put

public void put(COSObject indirect,
                PDExtendedGraphicsState extGState)

Description copied from interface: ResourceCache

Puts the given indirect extended graphics state resource in the cache.

Specified by:

put in interface ResourceCache

Parameters:

indirect - the indirect reference of the extended graphics state to be cached

extGState - the extended graphics state to be cached

getShading

public PDShading getShading(COSObject indirect)

Description copied from interface: ResourceCache

Returns the shading resource for the given indirect object, if it is in the cache.

Specified by:

getShading in interface ResourceCache

Parameters:

indirect - the indirect reference of the shading to be returned

Returns:

the cached instance of the referenced shading, if available

put

public void put(COSObject indirect,
                PDShading shading)

Description copied from interface: ResourceCache

Puts the given indirect shading resource in the cache.

Specified by:

put in interface ResourceCache

Parameters:

indirect - the indirect reference of the shading to be cached

shading - the shading to be cached

getPattern

public PDAbstractPattern getPattern(COSObject indirect)

Description copied from interface: ResourceCache

Returns the pattern resource for the given indirect object, if it is in the cache.

Specified by:

getPattern in interface ResourceCache

Parameters:

indirect - the indirect reference of the pattern to be returned

Returns:

the cached instance of the referenced pattern, if available

put

public void put(COSObject indirect,
                PDAbstractPattern pattern)

Description copied from interface: ResourceCache

Puts the given indirect pattern resource in the cache.

Specified by:

put in interface ResourceCache

Parameters:

indirect - the indirect reference of the pattern to be cached

pattern - the pattern to be cached

getProperties

public PDPropertyList getProperties(COSObject indirect)

Description copied from interface: ResourceCache

Returns the property list resource for the given indirect object, if it is in the cache.

Specified by:

getProperties in interface ResourceCache

Parameters:

indirect - the indirect reference of the property list to be returned

Returns:

the cached instance of the referenced property list, if available

put

public void put(COSObject indirect,
                PDPropertyList propertyList)

Description copied from interface: ResourceCache

Puts the given indirect property list resource in the cache.

Specified by:

put in interface ResourceCache

Parameters:

indirect - the indirect reference of the property list to be cached

propertyList - the property list to be cached

getXObject

public PDXObject getXObject(COSObject indirect)

Description copied from interface: ResourceCache

Returns the XObject resource for the given indirect object, if it is in the cache.

Specified by:

getXObject in interface ResourceCache

Parameters:

indirect - the indirect reference of the XObject to be returned

Returns:

the cached instance of the referenced XObject, if available

put

public void put(COSObject indirect,
                PDXObject xobject)

Description copied from interface: ResourceCache

Puts the given indirect XObject resource in the cache.

Specified by:

put in interface ResourceCache

Parameters:

indirect - the indirect reference of the XObject to be cached

xobject - the XObject to be cached