org.knime.core.data.image.png

Class PNGImageCell

java.lang.Object

org.knime.core.data.DataCell

org.knime.core.data.image.png.PNGImageCell

All Implemented Interfaces:

Serializable, DataValue, ImageValue, PNGImageValue

public class PNGImageCell
extends DataCell
implements PNGImageValue

Default implementation of a PNG image cell.

Author:

Thomas Gabriel, KNIME.com AG, Zurich

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PNGImageCell.PNGSerializer Serializer for PNGImageCell.

Nested classes/interfaces inherited from interface org.knime.core.data.image.png.PNGImageValue

PNGImageValue.ImageCellUtilityFactory

Nested classes/interfaces inherited from interface org.knime.core.data.image.ImageValue

ImageValue.ImageValueUtilityFactory

Nested classes/interfaces inherited from interface org.knime.core.data.DataValue

DataValue.UtilityFactory

Field Summary

Fields inherited from interface org.knime.core.data.image.png.PNGImageValue

UTILITY

Constructor Summary

Constructors

Constructor and Description
PNGImageCell(PNGImageContent content) Package scope method to create PNG image cell.

Method Summary

Modifier and Type	Method and Description
protected boolean	equalContent(DataValue otherValue) This method is called when two cell of different classes but with the same preferred value are compared (e.g.
protected boolean	equalsDataCell(DataCell dc) Derived classes implement their specific equals function here.
static DataCellSerializer<PNGImageCell>	getCellSerializer() Deprecated. use DataTypeRegistry.getSerializer(Class) instead
PNGImageContent	getImageContent() Get content of this image.
String	getImageExtension()
int	hashCode() This method must be implemented in order to ensure that two equal DataCell objects return the same hash code.
String	toString() Returns the String representation of this cell's value.

Methods inherited from class org.knime.core.data.DataCell

equals, getType, isMissing

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.knime.core.data.image.png.PNGImageValue

equalContent

Constructor Detail

PNGImageCell

PNGImageCell(PNGImageContent content)

Package scope method to create PNG image cell. Used from the PNGImageContent.toImageCell() method.

Parameters:

content - The content to wrap.

Method Detail

getCellSerializer

@Deprecated
public static DataCellSerializer<PNGImageCell> getCellSerializer()

Deprecated. use DataTypeRegistry.getSerializer(Class) instead

Serializer as required by parent class.

Returns:

A serializer for reading/writing cells of this kind.

getImageContent

public PNGImageContent getImageContent()

Get content of this image.

Specified by:

getImageContent in interface ImageValue

Specified by:

getImageContent in interface PNGImageValue

Returns:

The image content, never null.

toString

public String toString()

Returns the String representation of this cell's value.

Specified by:

toString in class DataCell

Returns:

a String representation of this cell's value

equalsDataCell

protected boolean equalsDataCell(DataCell dc)

Derived classes implement their specific equals function here. The argument is guaranteed to be not null or a missing value, to be of the same class like this.

Specified by:

equalsDataCell in class DataCell

Parameters:

dc - the cell to compare this to

Returns:

true if this is equal to the argument, false if not

equalContent

protected boolean equalContent(DataValue otherValue)

This method is called when two cell of different classes but with the same preferred value are compared (e.g. SdfCell and SdfAdapterCell or MolCell and MolBlobCell). All such cell classes should override this method with the same implementation, usually by comparing both preferred values. You can assume the this cell and the other cell have the same preferred value class, i.e. you can cast the argument to the preferred value.
The default implementation returns false.

Overrides:

equalContent in class DataCell

Parameters:

otherValue - the other data value

Returns:

true if the content of both cells is the same, false otherwise

hashCode

public int hashCode()

This method must be implemented in order to ensure that two equal DataCell objects return the same hash code. Note that two cells can be equal according to DataCell.equalsDataCell(DataCell) and DataCell.equalContent(DataValue) so two different cells implementations with the same preferred value must have the same hash code.

Specified by:

hashCode in class DataCell

Returns:

the hash code of your specific DataCell

See Also:

Object.hashCode(), DataCell.equals(java.lang.Object)

getImageExtension

public String getImageExtension()

Specified by:

getImageExtension in interface ImageValue

Returns:

extension of the image