de.laures.cewolf.taglib
Class ChartImageDefinition

java.lang.Object
  de.laures.cewolf.taglib.ChartImageDefinition

All Implemented Interfaces:

ChartHolder, ChartImage, java.io.Serializable

public class ChartImageDefinition
extends java.lang.Object
implements ChartImage, ChartHolder, java.io.Serializable

Serializable implementaton of a ChartImage.

Author:

glaures

See Also:

ChartImage, Serialized Form

Field Summary

private ChartHolder	chartHolder
private int	height
private static org.apache.commons.logging.Log	log
private java.lang.String	mimeType
private RenderedImage	renderedImage
private java.util.Date	timeoutTime
private int	type
private int	width

Fields inherited from interface de.laures.cewolf.ChartImage

IMG_TYPE_CHART, IMG_TYPE_LEGEND

Constructor Summary

ChartImageDefinition(ChartHolder ch, int width, int height, int type, java.lang.String mimeType, int timeout)
Constructor for ChartImage

Method Summary

private void	ensureRendered()
protected void	finalize()
byte[]	getBytes() Writes out a cached image to an outputstream.
java.lang.Object	getChart() Returns a chart.
java.lang.Object	getDataset() Returns the dataset produced when using this definition.The type of this object is dependant on the underlying chart implementation.
int	getHeight() Returns the height.
java.lang.String	getMimeType() Returns the mimeType.
java.lang.Object	getRenderingInfo()
int	getSize() Returns the size of the image in bytes.
java.util.Date	getTimeoutTime()
int	getType() Returns the type of the chart image.
int	getWidth() Returns the width.
private void	onImageRendered(RenderedImage renderedImage) Implemented onImageRendered method.

Methods inherited from class java.lang.Object

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

Field Detail

log

private static final org.apache.commons.logging.Log log

chartHolder

private final ChartHolder chartHolder

height

private final int height

width

private final int width

type

private final int type

mimeType

private final java.lang.String mimeType

timeoutTime

private final transient java.util.Date timeoutTime

renderedImage

private RenderedImage renderedImage

Constructor Detail

ChartImageDefinition

public ChartImageDefinition(ChartHolder ch,
                            int width,
                            int height,
                            int type,
                            java.lang.String mimeType,
                            int timeout)

Constructor for ChartImage

Method Detail

getHeight

public int getHeight()

Returns the height.

Specified by:

getHeight in interface ChartImage

Returns:

int

getWidth

public int getWidth()

Returns the width.

Specified by:

getWidth in interface ChartImage

Returns:

int

getType

public int getType()

Description copied from interface: ChartImage

Returns the type of the chart image.

Specified by:

getType in interface ChartImage

Returns:

the type of the chart image

See Also:

ChartImage.IMG_TYPE_CHART, ChartImage.IMG_TYPE_LEGEND

getChart

public java.lang.Object getChart()
                          throws DatasetProduceException,
                                 ChartValidationException,
                                 PostProcessingException

Description copied from interface: ChartHolder

Returns a chart. The type of this object is dependant on the underlying chart implementation. As of this version of Cewolf it is of type org.jfree.chart.JFreeChart.

Specified by:

getChart in interface ChartHolder

Returns:

the chart object for this definition

Throws:

DatasetProduceException - if there could be no data produced for the cahrt

PostProcessingException - if a post processor failed to process the chart

ChartValidationException

getDataset

public java.lang.Object getDataset()
                            throws DatasetProduceException

Description copied from interface: ChartHolder

Returns the dataset produced when using this definition.The type of this object is dependant on the underlying chart implementation. As of this version of Cewolf it is of type org.jfree.data.Dataset.

Specified by:

getDataset in interface ChartHolder

Returns:

Object the dataset for this definition

Throws:

DatasetProduceException - if the dataset could not be produced

getMimeType

public java.lang.String getMimeType()

Returns the mimeType.

Specified by:

getMimeType in interface ChartImage

Returns:

String

finalize

protected void finalize()
                 throws java.lang.Throwable

Overrides:

finalize in class java.lang.Object

Throws:

java.lang.Throwable

See Also:

Object.finalize()

getRenderingInfo

public java.lang.Object getRenderingInfo()
                                  throws CewolfException

Throws:

CewolfException

See Also:

de.laures.cewolf.ChartImage#getRenderingInfo()

getBytes

public byte[] getBytes()
                throws CewolfException

Description copied from interface: ChartImage

Writes out a cached image to an outputstream. This method only marks the object as accessed and therfore frees it for cache cleanup.

Specified by:

getBytes in interface ChartImage

Throws:

CewolfException

ensureRendered

private void ensureRendered()
                     throws CewolfException

Throws:

CewolfException

getSize

public int getSize()
            throws CewolfException

Description copied from interface: ChartImage

Returns the size of the image in bytes.

Specified by:

getSize in interface ChartImage

Returns:

size of the image

Throws:

CewolfException - if the size could not be determined

See Also:

ChartImage.getSize()

getTimeoutTime

public java.util.Date getTimeoutTime()

Specified by:

getTimeoutTime in interface ChartImage

onImageRendered

private void onImageRendered(RenderedImage renderedImage)

Implemented onImageRendered method.

Parameters:

renderedImage - The image

See Also:

de.laures.cewolf.ChartHolder#onImageRendered(de.laures.cewolf.util.RenderedImage).