Package uk.ac.rdg.resc.edal.graphics.style.sld

Class AbstractSLDSymbolizer

java.lang.Object

uk.ac.rdg.resc.edal.graphics.style.sld.AbstractSLDSymbolizer

All Implemented Interfaces:

SLDSymbolizer

Direct Known Subclasses:

AbstractSLDSymbolizer1D, AbstractSLDSymbolizer2D

public abstract class AbstractSLDSymbolizer
extends Object
implements SLDSymbolizer

Field Summary

Fields

Modifier and Type	Field	Description
protected ImageLayer	imageLayer
protected Node	symbolizerNode
protected List<String>	varNames
protected XPath	xPath

Constructor Summary

Constructors

Constructor	Description
AbstractSLDSymbolizer()

Method Summary

Modifier and Type	Method	Description
ImageLayer	getImageLayer(List<String> varNames, Node symbolizerNode)	Parse the node of the SLD XML document when given as a parameter as well as the name of the SLD layer and return an image layer object.
protected abstract ImageLayer	parseSymbolizer()	This method must be implemented by any symbolizer classes extending this class.
protected abstract void	setVarNames(List<String> varNames)

Methods inherited from class java.lang.Object

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

Field Detail

varNames

protected List<String> varNames

symbolizerNode

protected Node symbolizerNode

imageLayer

protected ImageLayer imageLayer

xPath

protected XPath xPath

Constructor Detail

AbstractSLDSymbolizer

public AbstractSLDSymbolizer()

Method Detail

parseSymbolizer

protected abstract ImageLayer parseSymbolizer()
                                       throws Exception

This method must be implemented by any symbolizer classes extending this class. New subclasses should use the xPath field to parse the symbolizerNode field, which will contain the symbolizer node of the SLD XML document on execution. The SLD layer name is also provided in the layerName field. The resulting image layer should be returned. New symbolizers must also be registered using the registerSymbolizer method of the StyleSLDParser class at runtime, either in the static initializer of that class or elsewhere before the createImage method of StyleSLDParser is executed.

Returns:

ImageLayer

Throws:

Exception

getImageLayer

public ImageLayer getImageLayer(List<String> varNames,
                                Node symbolizerNode)
                         throws SLDException

Parse the node of the SLD XML document when given as a parameter as well as the name of the SLD layer and return an image layer object.

Specified by:

getImageLayer in interface SLDSymbolizer

Parameters:

varNames -

symbolizerNode -

Returns:

ImageLayer

Throws:

SLDException

setVarNames

protected abstract void setVarNames(List<String> varNames)
                             throws SLDException

Throws:

SLDException