org.geotools.renderer.style

Class StyleAttributeExtractorTruncated

Object

DefaultFilterVisitor

FilterAttributeExtractor

StyleAttributeExtractor

StyleAttributeExtractorTruncated

All Implemented Interfaces:

StyleVisitor, ExpressionVisitor, FilterVisitor

public class StyleAttributeExtractorTruncated
extends StyleAttributeExtractor
implements StyleVisitor

A simple visitor whose purpose is to extract the set of attributes used by a Style, that is, those that the Style expects to find in order to work properly

This is very similiar to StyleAttributeExtractor, but with these differences: a) it doesnt the count the tag in the b) it doesnt count anything in the 's tag c) it doesnt count anything in the 's tag

The reasons for this are because these fields are ALWAYS taken directly from the feature, not from the style.

So, for making queries (knowing any property that might be possibily be used in the SLD), use StyleAttributeExtractor. If you want to know what a symbolizer actually needs to cache, then use this (StyleAttributeExtractorTruncated).

Author:

dblasby

Field Summary

Fields inherited from class FilterAttributeExtractor

attributeNames, featureType, propertyNames, usingDynamicProperties

Constructor Summary

Constructors

Constructor and Description
StyleAttributeExtractorTruncated()

Method Summary

Modifier and Type	Method and Description
void	clear() Resets the attributes found so that a new attribute search can be performed
boolean	isUsingVolatileFunctions()
Object	visit(Function expression, Object data)
void	visit(TextSymbolizer text) Called when accept is called on a textsymbolizer

Methods inherited from class StyleAttributeExtractor

getAttributes, getDefaultGeometryUsed, isSymbolizerGeometriesVisitEnabled, setSymbolizerGeometriesVisitEnabled, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class FilterAttributeExtractor

getAttributeNames, getAttributeNameSet, getPropertyNameSet, isConstantExpression, isUsingDynamincProperties, visit

Methods inherited from class DefaultFilterVisitor

visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visitNullFilter

Methods inherited from class Object

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

Methods inherited from interface StyleVisitor

visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Constructor Detail

StyleAttributeExtractorTruncated

public StyleAttributeExtractorTruncated()

Method Detail

clear

public void clear()

Description copied from class: FilterAttributeExtractor

Resets the attributes found so that a new attribute search can be performed

Overrides:

clear in class FilterAttributeExtractor

isUsingVolatileFunctions

public boolean isUsingVolatileFunctions()

visit

public Object visit(Function expression,
                    Object data)

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class FilterAttributeExtractor

visit

public void visit(TextSymbolizer text)

Description copied from interface: StyleVisitor

Called when accept is called on a textsymbolizer

Specified by:

visit in interface StyleVisitor

Overrides:

visit in class StyleAttributeExtractor

Parameters:

text - the text symbolizer to visit

See Also:

StyleVisitor.visit(org.geotools.styling.TextSymbolizer)