/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2005-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.styling;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
import java.util.logging.Level;
import java.util.regex.Pattern;
import org.geotools.factory.CommonFactoryFinder;
import org.geotools.factory.GeoTools;
import org.geotools.filter.ExpressionDOMParser;
import org.geotools.resources.i18n.ErrorKeys;
import org.geotools.resources.i18n.Errors;
import org.opengis.filter.Filter;
import org.opengis.filter.FilterFactory;
import org.opengis.filter.FilterFactory2;
import org.opengis.filter.expression.Expression;
import org.opengis.filter.expression.Function;
import org.opengis.filter.expression.Literal;
import org.opengis.filter.expression.PropertyName;
import org.w3c.dom.CharacterData;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
/**
* TODO: This really needs to be container ready
*
* @author jgarnett
*
*
* @source $URL$
* http://svn.geotools.org/geotools/trunk/gt/modules/library/main/src/main/java/org/geotools
* /styling/SLDParser.java $
*/
public class SLDParser {
private static final java.util.logging.Logger LOGGER = org.geotools.util.logging.Logging
.getLogger("org.geotools.styling");
private static final String channelSelectionString = "ChannelSelection";
private static final String graphicSt = "Graphic"; // to make pmd to shut up
private static final String geomString = "Geometry"; // to make pmd to shut up
private static final String fillSt = "Fill";
private static final String opacityString = "Opacity";
private static final String overlapBehaviorString = "OverlapBehavior";
private static final String colorMapString = "ColorMap";
private static final String colorMapOpacityString = "opacity";
private static final String colorMapColorString = "color";
private static final String contrastEnhancementString = "ContrastEnhancement";
private static final String shadedReliefString = "ShadedRelief";
private static final String imageOutlineString = "ImageOutline";
private static final String colorMapQuantityString = "quantity";
private static final String colorMapLabelString = "label";
private static final String strokeString = "Stroke";
private static final String uomString = "uom";
private static final String VendorOptionString = "VendorOption";
private static final Pattern WHITESPACES = Pattern.compile("\\s+", Pattern.MULTILINE);
private static final Pattern LEADING_WHITESPACES = Pattern.compile("^\\s+");
private static final Pattern TRAILING_WHITESPACES = Pattern.compile("\\s+$");
private FilterFactory ff;
// protected java.io.InputStream instream;
protected InputSource source;
private org.w3c.dom.Document dom;
protected StyleFactory factory;
/** useful for detecting relative onlineresources */
private URL sourceUrl;
/**
* Create a Stylereader - use if you already have a dom to parse.
*
* @param factory
* The StyleFactory to use to build the style
*/
public SLDParser(StyleFactory factory) {
this(factory, CommonFactoryFinder.getFilterFactory(GeoTools.getDefaultHints()));
}
public SLDParser(StyleFactory factory, FilterFactory filterFactory) {
this.factory = factory;
this.ff = filterFactory;
}
/**
* Creates a new instance of SLDStyler
*
* @param factory
* The StyleFactory to use to read the file
* @param filename
* The file to be read.
*
* @throws java.io.FileNotFoundException
* - if the file is missing
*/
public SLDParser(StyleFactory factory, String filename) throws java.io.FileNotFoundException {
this(factory);
File f = new File(filename);
setInput(f);
}
/**
* Creates a new SLDStyle object.
*
* @param factory
* The StyleFactory to use to read the file
* @param f
* the File to be read
*
* @throws java.io.FileNotFoundException
* - if the file is missing
*/
public SLDParser(StyleFactory factory, File f) throws java.io.FileNotFoundException {
this(factory);
setInput(f);
}
/**
* Creates a new SLDStyle object.
*
* @param factory
* The StyleFactory to use to read the file
* @param url
* the URL to be read.
*
* @throws java.io.IOException
* - if something goes wrong reading the file
*/
public SLDParser(StyleFactory factory, java.net.URL url) throws java.io.IOException {
this(factory);
setInput(url);
}
/**
* Creates a new SLDStyle object.
*
* @param factory
* The StyleFactory to use to read the file
* @param s
* The inputstream to be read
*/
public SLDParser(StyleFactory factory, java.io.InputStream s) {
this(factory);
setInput(s);
}
/**
* Creates a new SLDStyle object.
*
* @param factory
* The StyleFactory to use to read the file
* @param r
* The inputstream to be read
*/
public SLDParser(StyleFactory factory, java.io.Reader r) {
this(factory);
setInput(r);
}
/**
* set the file to read the SLD from
*
* @param filename
* the file to read the SLD from
*
* @throws java.io.FileNotFoundException
* if the file is missing
*/
public void setInput(String filename) throws java.io.FileNotFoundException {
File f = new File(filename);
source = new InputSource(new java.io.FileInputStream(f));
try {
sourceUrl = f.toURI().toURL();
} catch (MalformedURLException e) {
LOGGER.warning("Can't build URL for file " + f.getAbsolutePath());
}
}
/**
* Sets the file to use to read the SLD from
*
* @param f
* the file to use
*
* @throws java.io.FileNotFoundException
* if the file is missing
*/
public void setInput(File f) throws java.io.FileNotFoundException {
source = new InputSource(new java.io.FileInputStream(f));
try {
sourceUrl = f.toURI().toURL();
} catch (MalformedURLException e) {
LOGGER.warning("Can't build URL for file " + f.getAbsolutePath());
}
}
/**
* sets an URL to read the SLD from
*
* @param url
* the url to read the SLD from
*
* @throws java.io.IOException
* If anything goes wrong opening the url
*/
public void setInput(java.net.URL url) throws java.io.IOException {
source = new InputSource(url.openStream());
sourceUrl = url;
}
/**
* Sets the input stream to read the SLD from
*
* @param in
* the inputstream used to read the SLD from
*/
public void setInput(java.io.InputStream in) {
source = new InputSource(in);
}
/**
* Sets the input stream to read the SLD from
*
* @param in
* the inputstream used to read the SLD from
*/
public void setInput(java.io.Reader in) {
source = new InputSource(in);
}
/**
* Read the xml inputsource provided and create a Style object for each user style found
*
* @return Style[] the styles constructed.
*
* @throws RuntimeException
* if a parsing error occurs
*/
public Style[] readXML() {
javax.xml.parsers.DocumentBuilderFactory dbf = javax.xml.parsers.DocumentBuilderFactory
.newInstance();
dbf.setNamespaceAware(true);
try {
javax.xml.parsers.DocumentBuilder db = dbf.newDocumentBuilder();
dom = db.parse(source);
} catch (javax.xml.parsers.ParserConfigurationException pce) {
throw new RuntimeException(pce);
} catch (org.xml.sax.SAXException se) {
throw new RuntimeException(se);
} catch (java.io.IOException ie) {
throw new RuntimeException(ie);
}
return readDOM(dom);
}
/**
* Read styles from the dom that was previously parsed.
*/
public Style[] readDOM() {
if (dom == null) {
throw new NullPointerException("dom is null");
}
return readDOM(dom);
}
/**
* Read the DOM provided and create a Style object for each user style found
*
* @param document
* a dom containing the SLD
*
* @return Style[] the styles constructed.
*/
public Style[] readDOM(org.w3c.dom.Document document) {
this.dom = document;
// for our next trick do something with the dom.
NodeList nodes = findElements(document, "UserStyle");
final int length = nodes.getLength();
if (nodes == null)
return new Style[0];
Style[] styles = new Style[length];
for (int i = 0; i < length; i++) {
styles[i] = parseStyle(nodes.item(i));
}
return styles;
}
/**
* @param document
* @param name
*/
private NodeList findElements(final org.w3c.dom.Document document, final String name) {
NodeList nodes = document.getElementsByTagNameNS("*", name);
if (nodes.getLength() == 0) {
nodes = document.getElementsByTagName(name);
}
return nodes;
}
private NodeList findElements(final org.w3c.dom.Element element, final String name) {
NodeList nodes = element.getElementsByTagNameNS("*", name);
if (nodes.getLength() == 0) {
nodes = element.getElementsByTagName(name);
}
return nodes;
}
public StyledLayerDescriptor parseSLD() {
javax.xml.parsers.DocumentBuilderFactory dbf = javax.xml.parsers.DocumentBuilderFactory
.newInstance();
dbf.setNamespaceAware(true);
try {
javax.xml.parsers.DocumentBuilder db = dbf.newDocumentBuilder();
dom = db.parse(source);
// for our next trick do something with the dom.
// NodeList nodes = findElements(dom, "StyledLayerDescriptor");
StyledLayerDescriptor sld = parseDescriptor(dom.getDocumentElement());// should only be
// one per file
return sld;
} catch (javax.xml.parsers.ParserConfigurationException pce) {
throw new RuntimeException(pce);
} catch (org.xml.sax.SAXException se) {
throw new RuntimeException(se);
} catch (java.io.IOException ie) {
throw new RuntimeException(ie);
}
}
public StyledLayerDescriptor parseDescriptor(Node root) {
StyledLayerDescriptor sld = factory.createStyledLayerDescriptor();
// StyledLayer layer = null;
// LineSymbolizer symbol = factory.createLineSymbolizer();
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase("Name")) {
sld.setName(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("Title")) {
sld.setTitle(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("Abstract")) {
sld.setAbstract(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("NamedLayer")) {
NamedLayer layer = parseNamedLayer(child);
sld.addStyledLayer(layer);
} else if (childName.equalsIgnoreCase("UserLayer")) {
StyledLayer layer = parseUserLayer(child);
sld.addStyledLayer(layer);
}
}
return sld;
}
/**
* Returns the first child node value, or null if there is no child
* @param child
* @return
*/
String getFirstChildValue(Node child) {
if(child.getFirstChild() != null)
return child.getFirstChild().getNodeValue();
else
return null;
}
private StyledLayer parseUserLayer(Node root) {
UserLayer layer = new UserLayerImpl();
// LineSymbolizer symbol = factory.createLineSymbolizer();
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase("InlineFeature")) {
parseInlineFeature(child, layer);
} else if (childName.equalsIgnoreCase("UserStyle")) {
Style user = parseStyle(child);
layer.addUserStyle(user);
} else if (childName.equalsIgnoreCase("Name")) {
String layerName = getFirstChildValue(child);
layer.setName(layerName);
if (LOGGER.isLoggable(Level.INFO))
LOGGER.info("layer name: " + layer.getName());
} else if (childName.equalsIgnoreCase("RemoteOWS")) {
RemoteOWS remoteOws = parseRemoteOWS(child);
layer.setRemoteOWS(remoteOws);
} else if (childName.equalsIgnoreCase("LayerFeatureConstraints")) {
layer.setLayerFeatureConstraints(parseLayerFeatureConstraints(child));
}
}
return layer;
}
private FeatureTypeConstraint[] parseLayerFeatureConstraints(Node root) {
List<FeatureTypeConstraint> featureTypeConstraints = new ArrayList<FeatureTypeConstraint>();
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName.equalsIgnoreCase("FeatureTypeConstraint")) {
final FeatureTypeConstraint ftc = parseFeatureTypeConstraint(child);
if (ftc != null)
featureTypeConstraints.add(ftc);
}
}
return (FeatureTypeConstraint[]) featureTypeConstraints
.toArray(new FeatureTypeConstraint[featureTypeConstraints.size()]);
}
protected FeatureTypeConstraint parseFeatureTypeConstraint(Node root) {
FeatureTypeConstraint ftc = new FeatureTypeConstraintImpl();
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName.equalsIgnoreCase("FeatureTypeName")) {
ftc.setFeatureTypeName(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("Filter")) {
ftc.setFilter(parseFilter(child));
}
}
ftc.setExtents(new Extent[0]);
if (ftc.getFeatureTypeName() == null)
return null;
else
return ftc;
}
protected RemoteOWS parseRemoteOWS(Node root) {
RemoteOWS ows = new RemoteOWSImpl();
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName.equalsIgnoreCase("Service")) {
ows.setService(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("OnlineResource")) {
ows.setOnlineResource(parseOnlineResource(child));
}
}
return ows;
}
/**
*
* @param child
* @param layer
*/
private void parseInlineFeature(Node root, UserLayer layer) {
try {
SLDInlineFeatureParser inparser = new SLDInlineFeatureParser(root);
layer.setInlineFeatureDatastore(inparser.dataStore);
layer.setInlineFeatureType(inparser.featureType);
} catch (Exception e) {
throw (IllegalArgumentException) new IllegalArgumentException().initCause(e);
}
}
/**
* Parses a NamedLayer.
* <p>
* The NamedLayer schema is:
*
* <pre>
* <code>
* <xsd:element name="NamedLayer">
* <xsd:annotation>
* <xsd:documentation> A NamedLayer is a layer of data that has a name advertised by a WMS. </xsd:documentation>
* </xsd:annotation>
* <xsd:complexType>
* <xsd:sequence>
* <xsd:element ref="sld:Name"/>
* <xsd:element ref="sld:LayerFeatureConstraints" minOccurs="0"/>
* <xsd:choice minOccurs="0" maxOccurs="unbounded">
* <xsd:element ref="sld:NamedStyle"/>
* <xsd:element ref="sld:UserStyle"/>
* </xsd:choice>
* </xsd:sequence>
* </xsd:complexType>
* </xsd:element>
* </code>
* </pre>
*
* </p>
*
* @param root
*/
private NamedLayer parseNamedLayer(Node root) {
NamedLayer layer = new NamedLayerImpl();
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase("Name")) {
layer.setName(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("NamedStyle")) {
NamedStyle style = parseNamedStyle(child);
layer.addStyle(style);
} else if (childName.equalsIgnoreCase("UserStyle")) {
Style user = parseStyle(child);
layer.addStyle(user);
} else if (childName.equalsIgnoreCase("LayerFeatureConstraints")) {
layer.setLayerFeatureConstraints(parseLayerFeatureConstraints(child));
}
}
return layer;
}
/**
* Parses a NamedStyle from node.
* <p>
* A NamedStyle is used to refer to a style that has a name in a WMS, and is defined as:
*
* <pre>
* <code>
* <xsd:element name="NamedStyle">
* <xsd:annotation>
* <xsd:documentation> A NamedStyle is used to refer to a style that has a name in a WMS. </xsd:documentation>
* </xsd:annotation>
* <xsd:complexType>
* <xsd:sequence>
* <xsd:element ref="sld:Name"/>
* </xsd:sequence>
* </xsd:complexType>
* </xsd:element>
* </code>
* </pre>
*
* </p>
*
* @param n
*/
public NamedStyle parseNamedStyle(Node n) {
if (dom == null) {
try {
javax.xml.parsers.DocumentBuilderFactory dbf = javax.xml.parsers.DocumentBuilderFactory
.newInstance();
javax.xml.parsers.DocumentBuilder db = dbf.newDocumentBuilder();
dom = db.newDocument();
} catch (javax.xml.parsers.ParserConfigurationException pce) {
throw new RuntimeException(pce);
}
}
NamedStyle style = factory.createNamedStyle();
NodeList children = n.getChildNodes();
final int length = children.getLength();
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("" + children.getLength() + " children to process");
}
for (int j = 0; j < length; j++) {
Node child = children.item(j);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)
|| (child.getFirstChild() == null)) {
continue;
}
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("processing " + child.getLocalName());
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase("Name")) {
style.setName(getFirstChildValue(child));
}
}
return style;
}
/**
* build a style for the Node provided
*
* @param n
* the node which contains the style to be parsed.
*
* @return the Style constructed.
*
* @throws RuntimeException
* if an error occurs setting up the parser
*/
public Style parseStyle(Node n) {
if (dom == null) {
try {
javax.xml.parsers.DocumentBuilderFactory dbf = javax.xml.parsers.DocumentBuilderFactory
.newInstance();
javax.xml.parsers.DocumentBuilder db = dbf.newDocumentBuilder();
dom = db.newDocument();
} catch (javax.xml.parsers.ParserConfigurationException pce) {
throw new RuntimeException(pce);
}
}
Style style = factory.createStyle();
NodeList children = n.getChildNodes();
final int length = children.getLength();
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("" + children.getLength() + " children to process");
}
for (int j = 0; j < length; j++) {
Node child = children.item(j);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)
|| (child.getFirstChild() == null)) {
continue;
}
// System.out.println("The child is: " + child.getNodeName() + " or
// " + child.getLocalName() + " prefix is " +child.getPrefix());
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("processing " + child.getLocalName());
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
String firstChildValue = getFirstChildValue(child);
if (childName.equalsIgnoreCase("Name")) {
style.setName(firstChildValue);
} else if (childName.equalsIgnoreCase("Title")) {
style.setTitle(firstChildValue);
} else if (childName.equalsIgnoreCase("Abstract")) {
style.setAbstract(firstChildValue);
} else if (childName.equalsIgnoreCase("IsDefault")) {
if("1".equals(firstChildValue)) {
style.setDefault(true);
} else {
style.setDefault(Boolean.valueOf(firstChildValue).booleanValue());
}
} else if (childName.equalsIgnoreCase("FeatureTypeStyle")) {
style.addFeatureTypeStyle(parseFeatureTypeStyle(child));
}
}
return style;
}
/** Internal parse method - made protected for unit testing */
protected FeatureTypeStyle parseFeatureTypeStyle(Node style) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("Parsing featuretype style " + style.getLocalName());
}
FeatureTypeStyle ft = factory.createFeatureTypeStyle();
ArrayList<Rule> rules = new ArrayList<Rule>();
ArrayList<String> sti = new ArrayList<String>();
NodeList children = style.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("processing " + child.getLocalName());
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase("Name")) {
ft.setName(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("Title")) {
ft.setTitle(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("Abstract")) {
ft.setAbstract(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("FeatureTypeName")) {
ft.setFeatureTypeName(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("SemanticTypeIdentifier")) {
sti.add(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("Rule")) {
rules.add(parseRule(child));
} else if (childName.equalsIgnoreCase("Transformation")) {
ExpressionDOMParser parser = new ExpressionDOMParser(CommonFactoryFinder.getFilterFactory2(null));
Expression tx = parser.expression(getFirstNonTextChild(child));
ft.setTransformation(tx);
}
}
if (sti.size() > 0) {
ft.setSemanticTypeIdentifiers((String[]) sti.toArray(new String[0]));
}
ft.setRules((Rule[]) rules.toArray(new Rule[0]));
return ft;
}
private Node getFirstNonTextChild(Node node) {
NodeList children = node.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
return child;
}
return null;
}
/** Internal parse method - made protected for unit testing */
protected Rule parseRule(Node ruleNode) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("Parsing rule " + ruleNode.getLocalName());
}
Rule rule = factory.createRule();
List<Symbolizer> symbolizers = new ArrayList<Symbolizer>();
NodeList children = ruleNode.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.indexOf(':') != -1) {
// the DOM parser wasnt properly set to handle namespaces...
childName = childName.substring(childName.indexOf(':') + 1);
}
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("processing " + child.getLocalName());
}
if (childName.equalsIgnoreCase("Name")) {
rule.setName(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("Title")) {
rule.setTitle(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("Abstract")) {
rule.setAbstract(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("MinScaleDenominator")) {
rule.setMinScaleDenominator(Double
.parseDouble(getFirstChildValue(child)));
} else if (childName.equalsIgnoreCase("MaxScaleDenominator")) {
rule.setMaxScaleDenominator(Double
.parseDouble(getFirstChildValue(child)));
} else if (childName.equalsIgnoreCase("Filter")) {
Filter filter = parseFilter(child);
rule.setFilter(filter);
} else if (childName.equalsIgnoreCase("ElseFilter")) {
rule.setElseFilter(true);
} else if (childName.equalsIgnoreCase("LegendGraphic")) {
findElements(((Element) child), graphicSt);
NodeList g = findElements(((Element) child), graphicSt);
List<Graphic> legends = new ArrayList<Graphic>();
final int l = g.getLength();
for (int k = 0; k < l; k++) {
legends.add(parseGraphic(g.item(k)));
}
rule.setLegendGraphic((Graphic[]) legends.toArray(new Graphic[0]));
} else if (childName.equalsIgnoreCase("LineSymbolizer")) {
symbolizers.add(parseLineSymbolizer(child));
} else if (childName.equalsIgnoreCase("PolygonSymbolizer")) {
symbolizers.add(parsePolygonSymbolizer(child));
} else if (childName.equalsIgnoreCase("PointSymbolizer")) {
symbolizers.add(parsePointSymbolizer(child));
} else if (childName.equalsIgnoreCase("TextSymbolizer")) {
symbolizers.add(parseTextSymbolizer(child));
} else if (childName.equalsIgnoreCase("RasterSymbolizer")) {
symbolizers.add(parseRasterSymbolizer(child));
}
}
rule.setSymbolizers((Symbolizer[]) symbolizers.toArray(new Symbolizer[0]));
return rule;
}
/** Internal parse method - made protected for unit testing */
protected Filter parseFilter(Node child) {
// this sounds stark raving mad, but this is actually how the dom parser
// works...
// instead of passing in the parent element, pass in the first child and
// its
// siblings will also be parsed
Node firstChild = child.getFirstChild();
while (firstChild != null && firstChild.getNodeType() != Node.ELEMENT_NODE) {
// advance to the first actual element (rather than whitespace)
firstChild = firstChild.getNextSibling();
}
Filter filter = org.geotools.filter.FilterDOMParser.parseFilter(firstChild);
return filter;
}
/**
* parses the SLD for a linesymbolizer
*
* @param root
* a w2c Dom Node
*
* @return the linesymbolizer
*/
protected LineSymbolizer parseLineSymbolizer(Node root) {
LineSymbolizer symbol = factory.createLineSymbolizer();
NamedNodeMap namedNodeMap = root.getAttributes();
Node uomNode = namedNodeMap.getNamedItem(uomString);
if(uomNode != null)
{
UomOgcMapping uomMapping = UomOgcMapping.get(uomNode.getNodeValue());
symbol.setUnitOfMeasure(uomMapping.getUnit());
}
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase(geomString)) {
symbol.setGeometry(parseGeometry(child));
} else if (childName.equalsIgnoreCase(strokeString)) {
symbol.setStroke(parseStroke(child));
} else if (childName.equalsIgnoreCase(VendorOptionString)) {
parseVendorOption(symbol, child);
}
}
return symbol;
}
/**
* parses the SLD for a polygonsymbolizer
*
* @param root
* w3c dom node
*
* @return the polygon symbolizer
*/
protected PolygonSymbolizer parsePolygonSymbolizer(Node root) {
PolygonSymbolizer symbol = factory.createPolygonSymbolizer();
symbol.setFill((Fill) null);
symbol.setStroke((Stroke) null);
NamedNodeMap namedNodeMap = root.getAttributes();
Node uomNode = namedNodeMap.getNamedItem(uomString);
if(uomNode != null)
{
UomOgcMapping uomMapping = UomOgcMapping.get(uomNode.getNodeValue());
symbol.setUnitOfMeasure(uomMapping.getUnit());
}
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase(geomString)) {
symbol.setGeometry(parseGeometry(child));
} else if (childName.equalsIgnoreCase(strokeString)) {
symbol.setStroke(parseStroke(child));
} else if (childName.equalsIgnoreCase(fillSt)) {
symbol.setFill(parseFill(child));
} else if (childName.equalsIgnoreCase(VendorOptionString)) {
parseVendorOption(symbol, child);
}
}
return symbol;
}
/**
* parses the SLD for a text symbolizer
*
* @param root
* w3c dom node
*
* @return the TextSymbolizer
*/
protected TextSymbolizer parseTextSymbolizer(Node root) {
TextSymbolizer symbol = factory.createTextSymbolizer();
symbol.setFill(null);
NamedNodeMap namedNodeMap = root.getAttributes();
Node uomNode = namedNodeMap.getNamedItem(uomString);
if(uomNode != null)
{
UomOgcMapping uomMapping = UomOgcMapping.get(uomNode.getNodeValue());
symbol.setUnitOfMeasure(uomMapping.getUnit());
}
List<Font> fonts = new ArrayList<Font>();
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase(geomString)) {
symbol.setGeometry(parseGeometry(child));
} else if (childName.equalsIgnoreCase(fillSt)) {
symbol.setFill(parseFill(child));
} else if (childName.equalsIgnoreCase("Label")) {
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("parsing label " + child.getNodeValue());
// the label parser should collapse whitespaces to one, so
// we call parseCssParameter with trimWhiteSpace=false
symbol.setLabel(parseCssParameter(child, false));
if (symbol.getLabel() == null) {
if (LOGGER.isLoggable(Level.WARNING))
LOGGER
.warning("parsing TextSymbolizer node - couldnt find anything in the Label element!");
}
}
if (childName.equalsIgnoreCase("Font")) {
fonts.add(parseFont(child));
} else if (childName.equalsIgnoreCase("LabelPlacement")) {
symbol.setPlacement(parseLabelPlacement(child));
} else if (childName.equalsIgnoreCase("Halo")) {
symbol.setHalo(parseHalo(child));
} else if (childName.equalsIgnoreCase("Graphic")) {
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("Parsing non-standard Graphic in TextSymbolizer");
if (symbol instanceof TextSymbolizer2) {
((TextSymbolizer2) symbol).setGraphic(parseGraphic(child));
}
} else if (childName.equalsIgnoreCase("Snippet")) {
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("Parsing non-standard Abstract in TextSymbolizer");
if (symbol instanceof TextSymbolizer2)
((TextSymbolizer2) symbol).setSnippet(parseCssParameter(child, false));
} else if (childName.equalsIgnoreCase("FeatureDescription")) {
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("Parsing non-standard Description in TextSymbolizer");
if (symbol instanceof TextSymbolizer2)
((TextSymbolizer2) symbol)
.setFeatureDescription(parseCssParameter(child, false));
} else if (childName.equalsIgnoreCase("OtherText")) {
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("Parsing non-standard OtherText in TextSymbolizer");
if (symbol instanceof TextSymbolizer2)
((TextSymbolizer2) symbol).setOtherText(parseOtherText(child));
} else if (childName.equalsIgnoreCase("priority")) {
symbol.setPriority(parseCssParameter(child));
} else if (childName.equalsIgnoreCase(VendorOptionString)) {
parseVendorOption(symbol, child);
}
}
symbol.setFonts((Font[]) fonts.toArray(new Font[0]));
return symbol;
}
protected OtherText parseOtherText(Node root) {
// TODO: add methods to the factory to create OtherText instances
OtherText ot = new OtherTextImpl();
final Node targetAttribute = root.getAttributes().getNamedItem("target");
if (targetAttribute == null)
throw new IllegalArgumentException("OtherLocation does not have the "
+ "required 'target' attribute");
String target = targetAttribute.getNodeValue();
Expression text = parseCssParameter(root, true);
ot.setTarget(target);
ot.setText(text);
return ot;
}
/**
* adds the key/value pair from the node ("<VendorOption name="...">...</VendorOption>"). This
* can be generalized for other symbolizers in the future
*
* @param symbol
* @param child
*/
private void parseVendorOption(Symbolizer symbol, Node child) {
String key = child.getAttributes().getNamedItem("name").getNodeValue();
String value = getFirstChildValue(child);
symbol.getOptions().put(key, value);
}
/**
* parses the SLD for a text symbolizer
*
* @param root
* w3c dom node
*
* @return the TextSymbolizer
*/
protected RasterSymbolizer parseRasterSymbolizer(Node root) {
final RasterSymbolizer symbol = factory.getDefaultRasterSymbolizer();
NamedNodeMap namedNodeMap = root.getAttributes();
Node uomNode = namedNodeMap.getNamedItem(uomString);
if(uomNode != null)
{
UomOgcMapping uomMapping = UomOgcMapping.get(uomNode.getNodeValue());
symbol.setUnitOfMeasure(uomMapping.getUnit());
}
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase(geomString)) {
symbol.setGeometry(parseGeometry(child));
}
if (childName.equalsIgnoreCase(opacityString)) {
try {
final String opacityString = getFirstChildValue(child);
Expression opacity = parseParameterValueExpression(child, false);
symbol.setOpacity(opacity);
} catch (Throwable e) {
if (LOGGER.isLoggable(Level.WARNING))
LOGGER.log(Level.WARNING, e.getLocalizedMessage(), e);
}
} else if (childName.equalsIgnoreCase(channelSelectionString)) {
symbol.setChannelSelection(parseChannelSelection(child));
} else if (childName.equalsIgnoreCase(overlapBehaviorString)) {
try {
final String overlapString = child.getFirstChild().getLocalName();
symbol.setOverlap(ff.literal(overlapString));
} catch (Throwable e) {
if (LOGGER.isLoggable(Level.WARNING))
LOGGER.log(Level.WARNING, e.getLocalizedMessage(), e);
}
} else if (childName.equalsIgnoreCase(colorMapString)) {
symbol.setColorMap(parseColorMap(child));
} else if (childName.equalsIgnoreCase(contrastEnhancementString)) {
symbol.setContrastEnhancement(parseContrastEnhancement(child));
} else if (childName.equalsIgnoreCase(shadedReliefString)) {
symbol.setShadedRelief(parseShadedRelief(child));
} else if (childName.equalsIgnoreCase(imageOutlineString)) {
symbol.setImageOutline(parseLineSymbolizer(child));
}
}
return symbol;
}
/**
* Many elements in an SLD extends ParameterValueType (allowing for the definition of
* Expressions) - this method will try and produce an expression for the provided node.
* <p>
* As an example:
* <ul>
* <li>"sld:Opacity" is defined as a parameter value type:<br>
* <sld:Opacity>0.75<\sld:Opacity>
* <li>"sld:Label" is defined as a "mixed" parameter value type:<br>
* <sld:Label>Hello
* <sld:PropertyName>name<\sld:PropertyName><\sld:Label>
* </ul>
* From the SLD 1.0 spec: "ParameterValueType" uses WFS-Filter expressions to give values for
* SLD graphic parameters. A "mixed" element-content model is used with textual substitution for
* values.
*/
Expression parseParameterValueExpression(Node root, boolean mixedText) {
ExpressionDOMParser parser = new ExpressionDOMParser((FilterFactory2) ff);
Expression expr = parser.expression(root); // try the provided node first
if (expr != null)
return expr;
NodeList children = root.getChildNodes();
// if there is only one CharacterData node - we can make a literal out of it
if (children.getLength() == 1 && root.getFirstChild() instanceof CharacterData) {
Node textNode = root.getFirstChild();
String text = textNode.getNodeValue();
return ff.literal(text.trim());
}
List<Expression> expressionList = new ArrayList<Expression>();
for (int index = 0; index < children.getLength(); index++) {
Node child = children.item(index);
if (child instanceof CharacterData) {
if (mixedText) {
String text = child.getNodeValue();
Expression childExpr = ff.literal(text);
expressionList.add(childExpr);
}
} else {
Expression childExpr = parser.expression(child);
if (childExpr != null) {
expressionList.add(childExpr);
}
}
}
if (expressionList.isEmpty()) {
return Expression.NIL;
} else if (expressionList.size() == 1) {
return expressionList.get(0);
} else if (expressionList.size() == 2) {
Expression[] expressionArray = expressionList.toArray(new Expression[0]);
return ff.function("strConcat", expressionArray);
} else {
Expression[] expressionArray = expressionList.toArray(new Expression[0]);
return ff.function("Concatenate", expressionArray);
}
}
/** Internal parse method - made protected for unit testing */
protected ColorMapEntry parseColorMapEntry(Node root) {
ColorMapEntry symbol = factory.createColorMapEntry();
NamedNodeMap atts = root.getAttributes();
if (atts.getNamedItem(colorMapLabelString) != null) {
symbol.setLabel(atts.getNamedItem(colorMapLabelString).getNodeValue());
}
if (atts.getNamedItem(colorMapColorString) != null) {
symbol.setColor(ff.literal(atts.getNamedItem(colorMapColorString).getNodeValue()));
}
if (atts.getNamedItem(colorMapOpacityString) != null) {
symbol.setOpacity(ff.literal(atts.getNamedItem(colorMapOpacityString).getNodeValue()));
}
if (atts.getNamedItem(colorMapQuantityString) != null) {
symbol
.setQuantity(ff.literal(atts.getNamedItem(colorMapQuantityString)
.getNodeValue()));
}
return symbol;
}
/** Internal parse method - made protected for unit testing */
protected ColorMap parseColorMap(Node root) {
ColorMap symbol = factory.createColorMap();
if (root.hasAttributes()) {
// parsing type attribute
final NamedNodeMap atts = root.getAttributes();
Node typeAtt = atts.getNamedItem("type");
if (typeAtt != null) {
final String type = typeAtt.getNodeValue();
if ("ramp".equalsIgnoreCase(type)) {
symbol.setType(ColorMap.TYPE_RAMP);
} else if ("intervals".equalsIgnoreCase(type)) {
symbol.setType(ColorMap.TYPE_INTERVALS);
} else if ("values".equalsIgnoreCase(type)) {
symbol.setType(ColorMap.TYPE_VALUES);
} else if (LOGGER.isLoggable(Level.FINE))
LOGGER.fine(Errors.format(ErrorKeys.ILLEGAL_ARGUMENT_$2, "ColorMapType", type));
}
// parsing extended colors
typeAtt = atts.getNamedItem("extended");
if (typeAtt != null) {
final String type = typeAtt.getNodeValue();
if ("true".equalsIgnoreCase(type)) {
symbol.setExtendedColors(true);
} else if ("false".equalsIgnoreCase(type)) {
symbol.setExtendedColors(false);
} else if (LOGGER.isLoggable(Level.FINE))
LOGGER.fine(Errors.format(ErrorKeys.ILLEGAL_ARGUMENT_$2, "Extended", type));
}
}
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase("ColorMapEntry")) {
symbol.addColorMapEntry(parseColorMapEntry(child));
}
}
return symbol;
}
/** Internal parse method - made protected for unit testing */
protected SelectedChannelType parseSelectedChannel(Node root) {
SelectedChannelType symbol = new SelectedChannelTypeImpl();
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
} else if (childName.equalsIgnoreCase("SourceChannelName")) {
if (child.getFirstChild() != null
&& child.getFirstChild().getNodeType() == Node.TEXT_NODE)
symbol.setChannelName(getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("ContrastEnhancement")) {
symbol.setContrastEnhancement(parseContrastEnhancement(child));
/*
* try { if (child.getFirstChild() != null && child.getFirstChild().getNodeType() ==
* Node.TEXT_NODE) symbol.setContrastEnhancement((Expression) ExpressionBuilder
* .parse(child.getFirstChild().getNodeValue())); } catch (Exception e) { // TODO:
* handle exception }
*/
}
}
return symbol;
}
/** Internal parse method - made protected for unit testing */
protected ChannelSelection parseChannelSelection(Node root) {
List<SelectedChannelType> channels = new ArrayList<SelectedChannelType>();
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
} else if (childName.equalsIgnoreCase("GrayChannel")) {
channels.add(parseSelectedChannel(child));
} else if (childName.equalsIgnoreCase("RedChannel")) {
channels.add(parseSelectedChannel(child));
} else if (childName.equalsIgnoreCase("GreenChannel")) {
channels.add(parseSelectedChannel(child));
} else if (childName.equalsIgnoreCase("BlueChannel")) {
channels.add(parseSelectedChannel(child));
}
}
ChannelSelection dap = factory.createChannelSelection((SelectedChannelType[]) channels
.toArray(new SelectedChannelType[channels.size()]));
return dap;
}
/** Internal parse method - made protected for unit testing */
protected ContrastEnhancement parseContrastEnhancement(Node root) {
ContrastEnhancement symbol = new ContrastEnhancementImpl();
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase("Normalize")) {
symbol.setNormalize();
} else if (childName.equalsIgnoreCase("Histogram")) {
symbol.setHistogram();
} else if (childName.equalsIgnoreCase("Logarithmic")) {
symbol.setLogarithmic();
} else if (childName.equalsIgnoreCase("Exponential")) {
symbol.setExponential();
} else if (childName.equalsIgnoreCase("GammaValue")) {
try {
final String gammaString = getFirstChildValue(child);
symbol.setGammaValue(ff.literal(Double.parseDouble(gammaString)));
} catch (Exception e) {
if (LOGGER.isLoggable(Level.WARNING))
LOGGER.log(Level.WARNING, e.getLocalizedMessage(), e);
}
}
}
return symbol;
}
/** Internal parse method - made protected for unit testing */
protected ShadedRelief parseShadedRelief(Node root) {
ShadedRelief symbol = new ShadedReliefImpl();
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if ("BrightnessOnly".equalsIgnoreCase(childName)) {
symbol.setBrightnessOnly(Boolean.getBoolean(getFirstChildValue(child)));
} else if ("ReliefFactor".equalsIgnoreCase(childName)) {
try {
final String reliefString = getFirstChildValue(child);
Expression relief = ExpressionDOMParser.parseExpression(child);
symbol.setReliefFactor(relief);
} catch (Exception e) {
if (LOGGER.isLoggable(Level.WARNING))
LOGGER.log(Level.WARNING, e.getLocalizedMessage(), e);
}
}
}
return symbol;
}
/**
* parses the SLD for a point symbolizer
*
* @param root
* a w3c dom node
*
* @return the pointsymbolizer
*/
protected PointSymbolizer parsePointSymbolizer(Node root) {
PointSymbolizer symbol = factory.getDefaultPointSymbolizer();
// symbol.setGraphic(null);
NamedNodeMap namedNodeMap = root.getAttributes();
Node uomNode = namedNodeMap.getNamedItem(uomString);
if(uomNode != null)
{
UomOgcMapping uomMapping = UomOgcMapping.get(uomNode.getNodeValue());
symbol.setUnitOfMeasure(uomMapping.getUnit());
}
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase(geomString)) {
symbol.setGeometry(parseGeometry(child));
} else if (childName.equalsIgnoreCase(graphicSt)) {
symbol.setGraphic(parseGraphic(child));
}
else if (childName.equalsIgnoreCase(VendorOptionString)) {
parseVendorOption(symbol, child);
}
}
return symbol;
}
/** Internal parse method - made protected for unit testing */
protected Graphic parseGraphic(Node root) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("processing graphic " + root);
}
Graphic graphic = factory.getDefaultGraphic();
NodeList children = root.getChildNodes();
final int length = children.getLength();
boolean firstGraphic = true;
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase("ExternalGraphic")) {
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("parsing extgraphic " + child);
if(firstGraphic) {
graphic.graphicalSymbols().clear();
firstGraphic = false;
}
graphic.graphicalSymbols().add(parseExternalGraphic(child));
} else if (childName.equalsIgnoreCase("Mark")) {
if(firstGraphic) {
graphic.graphicalSymbols().clear();
firstGraphic = false;
}
graphic.graphicalSymbols().add(parseMark(child));
} else if (childName.equalsIgnoreCase(opacityString)) {
graphic.setOpacity(parseCssParameter(child));
} else if (childName.equalsIgnoreCase("size")) {
graphic.setSize(parseCssParameter(child));
} else if (childName.equalsIgnoreCase("displacement")) {
graphic.setDisplacement(parseDisplacement(child));
} else if (childName.equalsIgnoreCase("rotation")) {
graphic.setRotation(parseCssParameter(child));
}
}
return graphic;
}
/** Internal parse method - made protected for unit testing */
protected String parseGeometryName(Node root) {
Expression result = parseGeometry(root);
if(result instanceof PropertyName) {
return ((PropertyName) result).getPropertyName();
}
return null;
}
/** Internal parse method - made protected for unit testing */
protected Expression parseGeometry(Node root) {
if (LOGGER.isLoggable(Level.FINEST)) {
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("parsing GeometryExpression");
}
return parseCssParameter(root);
}
/** Internal parse method - made protected for unit testing */
protected Mark parseMark(Node root) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("parsing mark");
}
Mark mark = factory.createMark();
mark.setFill(null);
mark.setStroke(null);
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase(strokeString)) {
mark.setStroke(parseStroke(child));
} else if (childName.equalsIgnoreCase(fillSt)) {
mark.setFill(parseFill(child));
} else if (childName.equalsIgnoreCase("WellKnownName")) {
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("setting mark to " + getFirstChildValue(child));
mark.setWellKnownName(parseCssParameter(child));
}
}
return mark;
}
/** Internal parse method - made protected for unit testing */
protected ExternalGraphic parseExternalGraphic(Node root) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("processing external graphic ");
}
String format = "";
String uri = "";
Map<String, Object> paramList = new HashMap<String, Object>();
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase("OnLineResource")) {
uri = parseOnlineResource(child);
}
if (childName.equalsIgnoreCase("format")) {
LOGGER.finest("format child is " + child);
LOGGER.finest("seting ExtGraph format " + getFirstChildValue(child));
format = (getFirstChildValue(child));
} else if (childName.equalsIgnoreCase("customProperty")) {
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("custom child is " + child);
String propName = child.getAttributes().getNamedItem("name").getNodeValue();
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("seting custom property " + propName + " to "
+ getFirstChildValue(child));
Expression value = parseCssParameter(child);
paramList.put(propName, value);
}
}
URL url = null;
try {
url = new URL(uri);
} catch (MalformedURLException mfe) {
LOGGER.fine("Looks like " + uri + " is a relative path..");
if (sourceUrl != null) {
try {
url = new URL(sourceUrl, uri);
} catch (MalformedURLException e) {
LOGGER.warning("can't parse " + uri + " as relative to"
+ sourceUrl.toExternalForm());
}
}
if (url == null)
{
url = getClass().getResource(uri);
if (url == null)
LOGGER.warning("can't parse " + uri + " as a java resource present in the classpath");
}
}
ExternalGraphic extgraph;
if (url == null) {
extgraph = factory.createExternalGraphic(uri, format);
} else {
extgraph = factory.createExternalGraphic(url, format);
}
extgraph.setCustomProperties(paramList);
return extgraph;
}
/** Internal parse method - made protected for unit testing */
protected String parseOnlineResource(Node root) {
Element param = (Element) root;
org.w3c.dom.NamedNodeMap map = param.getAttributes();
final int length = map.getLength();
LOGGER.finest("attributes " + map.toString());
for (int k = 0; k < length; k++) {
String res = map.item(k).getNodeValue();
String name = map.item(k).getNodeName();
// if(name == null){
// name = map.item(k).getNodeName();
// }
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("processing attribute " + name + "=" + res);
}
// TODO: process the name space properly
if (name.equalsIgnoreCase("xlink:href") || name.equalsIgnoreCase("href")) {
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("seting ExtGraph uri " + res);
return res;
}
}
return null;
}
/** Internal parse method - made protected for unit testing */
protected Stroke parseStroke(Node root) {
Stroke stroke = factory.getDefaultStroke();
NodeList list = findElements(((Element) root), "GraphicFill");
int length = list.getLength();
if (length > 0) {
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("stroke: found a graphic fill " + list.item(0));
NodeList kids = list.item(0).getChildNodes();
for (int i = 0; i < kids.getLength(); i++) {
Node child = kids.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase(graphicSt)) {
Graphic g = parseGraphic(child);
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("setting stroke graphicfill with " + g);
stroke.setGraphicFill(g);
}
}
}
list = findElements(((Element) root), "GraphicStroke");
length = list.getLength();
if (length > 0) {
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("stroke: found a graphic stroke " + list.item(0));
NodeList kids = list.item(0).getChildNodes();
for (int i = 0; i < kids.getLength(); i++) {
Node child = kids.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase(graphicSt)) {
Graphic g = parseGraphic(child);
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("setting stroke graphicStroke with " + g);
stroke.setGraphicStroke(g);
}
}
}
list = findElements(((Element) root), "CssParameter");
length = list.getLength();
for (int i = 0; i < length; i++) {
Node child = list.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("now I am processing " + child);
}
Element param = (Element) child;
org.w3c.dom.NamedNodeMap map = param.getAttributes();
final int mapLength = map.getLength();
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("attributes " + map.toString());
}
for (int k = 0; k < mapLength; k++) {
String res = map.item(k).getNodeValue();
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("processing attribute " + res);
}
// process the css entry
//
if (res.equalsIgnoreCase(strokeString)) {
Expression color = parseParameterValueExpression(child, false);
stroke.setColor(color);
} else if (res.equalsIgnoreCase("width") || res.equalsIgnoreCase("stroke-width")) {
Expression width = parseParameterValueExpression(child, false);
stroke.setWidth(width);
} else if (res.equalsIgnoreCase(opacityString)
|| res.equalsIgnoreCase("stroke-opacity")) {
Expression opacity = parseParameterValueExpression(child, false);
stroke.setOpacity(opacity);
} else if (res.equalsIgnoreCase("linecap")
|| res.equalsIgnoreCase("stroke-linecap")) {
// since these are system-dependent just pass them through and hope.
stroke.setLineCap(parseCssParameter(child));
} else if (res.equalsIgnoreCase("linejoin")
|| res.equalsIgnoreCase("stroke-linejoin")) {
// since these are system-dependent just pass them through
// and hope.
stroke.setLineJoin(parseCssParameter(child));
} else if (res.equalsIgnoreCase("dasharray")
|| res.equalsIgnoreCase("stroke-dasharray")) {
String dashString = null;
if( child.getChildNodes().getLength() == 1 && child.getFirstChild().getNodeType() == Node.TEXT_NODE ){
dashString = getFirstChildValue(child);
} else {
Expression definition = parseCssParameter(child);
if( definition instanceof Literal){
dashString = ((Literal)definition).getValue().toString();
}
else {
LOGGER.warning("Only literal stroke-dasharray supported at this time:"+definition);
}
}
if( dashString != null){
StringTokenizer stok = new StringTokenizer(dashString.trim(), " ");
float[] dashes = new float[stok.countTokens()];
for (int l = 0; l < dashes.length; l++) {
dashes[l] = Float.parseFloat(stok.nextToken());
}
stroke.setDashArray(dashes);
}
else {
LOGGER.fine("Unable to parse stroke-dasharray");
}
} else if (res.equalsIgnoreCase("dashoffset")
|| res.equalsIgnoreCase("stroke-dashoffset")) {
stroke.setDashOffset(parseCssParameter(child));
}
}
}
return stroke;
}
/** Internal parse method - made protected for unit testing */
protected Fill parseFill(Node root) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("parsing fill ");
}
Fill fill = factory.getDefaultFill();
NodeList list = findElements(((Element) root), "GraphicFill");
int length = list.getLength();
if (length > 0) {
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("fill found a graphic fill " + list.item(0));
NodeList kids = list.item(0).getChildNodes();
for (int i = 0; i < kids.getLength(); i++) {
Node child = kids.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase(graphicSt)) {
Graphic g = parseGraphic(child);
if (LOGGER.isLoggable(Level.FINEST))
LOGGER.finest("setting fill graphic with " + g);
fill.setGraphicFill(g);
}
}
}
list = findElements(((Element) root), "CssParameter");
length = list.getLength();
for (int i = 0; i < length; i++) {
Node child = list.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
Element param = (Element) child;
org.w3c.dom.NamedNodeMap map = param.getAttributes();
final int mapLength = map.getLength();
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("now I am processing " + child);
}
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("attributes " + map.toString());
}
for (int k = 0; k < mapLength; k++) {
String res = map.item(k).getNodeValue();
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("processing attribute " + res);
}
if (res.equalsIgnoreCase(fillSt)) {
fill.setColor(parseCssParameter(child));
} else if (res.equalsIgnoreCase(opacityString)
|| res.equalsIgnoreCase("fill-opacity")) {
fill.setOpacity(parseCssParameter(child));
}
}
}
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("fill graphic " + fill.getGraphicFill());
}
return fill;
}
/**
* Concatenates the given expressions (through the strConcat FunctionFilter expression)
*
* @param left
* @param right
* @return
*/
private Expression manageMixed(Expression left, Expression right) {
if (left == null)
return right;
if (right == null)
return left;
Function mixed = ff.function("strConcat", new Expression[] { left, right });
return mixed;
}
/**
* Parses a css parameter. Default implementation trims whitespaces from text nodes.
*
* @param root
* node to parse
* @return
*/
private Expression parseCssParameter(Node root) {
return parseCssParameter(root, true);
}
/**
* Parses a css parameter. You can choose if the parser must trim whitespace from text nodes or
* not.
*
* @param root
* node to parse
* @param trimWhiteSpace
* true to trim whitespace from text nodes. If false, whitespaces will be collapsed into one
* @return
*/
private Expression parseCssParameter(Node root, boolean trimWhiteSpace) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("parsingCssParam " + root);
}
NodeList children = root.getChildNodes();
final int length = children.getLength();
List<Expression> expressions = new ArrayList<Expression>();
List<Boolean> cdatas = new ArrayList<Boolean>();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
// Added mixed="true" management through concatenation of text and
// expression nodes
if ((child == null)) {
continue;
} else if (child.getNodeType() == Node.TEXT_NODE) {
String value = child.getNodeValue();
if(value == null)
continue;
if(trimWhiteSpace) {
value = value.trim();
} else {
// by spec the inner spaces should collapsed into one, leading and trailing
// space should be eliminated too
// http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/ (4.3.6 whiteSpace)
// remove inside spaces
value = WHITESPACES.matcher(value).replaceAll(" ");
// we can't deal with leading and trailing whitespaces now
// as the parser will return each line of whitespace as a separate element
// we have to do that as post processing
}
if (value != null && value.length() != 0) {
Literal literal = ff.literal(value);
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("Built new literal " + literal);
}
// add the text node as a literal
expressions.add(literal);
cdatas.add(false);
}
} else if (child.getNodeType() == Node.ELEMENT_NODE) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("about to parse " + child.getLocalName());
}
// add the element node as an expression
expressions.add(org.geotools.filter.ExpressionDOMParser
.parseExpression(child));
cdatas.add(false);
} else if (child.getNodeType() == Node.CDATA_SECTION_NODE) {
String value = child.getNodeValue();
if (value != null && value.length() != 0) {
// we build a literal straight, to preserve even cdata sections
// that have only spaces (as opposed to try and parse it as a literal
// using the expression dom parser)
Literal literal = ff.literal(value);
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("Built new literal " + literal);
}
// add the text node as a literal
expressions.add(literal);
cdatas.add(true);
}
} else
continue;
}
if (expressions.size() == 0 && LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("no children in CssParam");
}
if(!trimWhiteSpace) {
// remove all leading white spaces, which means, find all
// string literals, remove the white space ones, eventually
// remove the leading white space form the first non white space one
while(expressions.size() > 0) {
Expression ex = expressions.get(0);
// if it's not a string literal we're done
if(!(ex instanceof Literal))
break;
Literal literal = (Literal) ex;
if(!(literal.getValue() instanceof String))
break;
// ok, string literal.
String s = (String) literal.getValue();
if(!cdatas.get(0)) {
if("".equals(s.trim())) {
// If it's whitespace, we have to remove it and continue
expressions.remove(0);
cdatas.remove(0);
} else {
// if it's not only whitespace, remove anyways the eventual whitespace
// at its beginning, and then exit, leading whitespace removal is done
if(s.startsWith(" ")) {
s = LEADING_WHITESPACES.matcher(s).replaceAll("");
expressions.set(0, ff.literal(s));
}
break;
}
} else {
break;
}
}
// remove also all trailing white spaces the same way
while(expressions.size() > 0) {
final int idx = expressions.size() - 1;
Expression ex = expressions.get(idx);
// if it's not a string literal we're done
if(!(ex instanceof Literal))
break;
Literal literal = (Literal) ex;
if(!(literal.getValue() instanceof String))
break;
// ok, string literal.
String s = (String) literal.getValue();
if(!cdatas.get(idx)) {
if("".equals(s.trim())) {
// If it's whitespace, we have to remove it and continue
expressions.remove(idx);
cdatas.remove(idx);
} else {
// if it's not only whitespace, remove anyways the eventual whitespace
// at its end, and then exit, trailing whitespace removal is done
if(s.endsWith(" ")) {
s = TRAILING_WHITESPACES.matcher(s).replaceAll("");
expressions.set(idx, ff.literal(s));
}
break;
}
} else {
break;
}
}
}
// now combine all expressions into one
Expression ret = null;
for (Expression expression : expressions) {
ret = manageMixed(ret, expression);
}
return ret;
}
/**
* Internal method to parse a Font Node; protected to allow for unit testing
*/
protected Font parseFont(Node root) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("parsing font");
}
Font font = factory.getDefaultFont();
NodeList list = findElements(((Element) root), "CssParameter");
int length = list.getLength();
for (int i = 0; i < length; i++) {
Node child = list.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
Element param = (Element) child;
org.w3c.dom.NamedNodeMap map = param.getAttributes();
final int mapLength = map.getLength();
for (int k = 0; k < mapLength; k++) {
String res = map.item(k).getNodeValue();
if (res.equalsIgnoreCase("font-family")) {
font.setFontFamily(parseCssParameter(child));
} else if (res.equalsIgnoreCase("font-style")) {
font.setFontStyle(parseCssParameter(child));
} else if (res.equalsIgnoreCase("font-size")) {
font.setFontSize(parseCssParameter(child));
} else if (res.equalsIgnoreCase("font-weight")) {
font.setFontWeight(parseCssParameter(child));
}
}
}
return font;
}
/** Internal parse method - made protected for unit testing */
protected LabelPlacement parseLabelPlacement(Node root) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("parsing labelPlacement");
}
LabelPlacement ret = null;
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase("PointPlacement")) {
ret = parsePointPlacement(child);
} else if (childName.equalsIgnoreCase("LinePlacement")) {
ret = parseLinePlacement(child);
}
}
return ret;
}
/** Internal parse method - made protected for unit testing */
protected PointPlacement parsePointPlacement(Node root) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("parsing pointPlacement");
}
Expression rotation = ff.literal(0.0);
AnchorPoint ap = null;
Displacement dp = null;
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase("AnchorPoint")) {
ap = (parseAnchorPoint(child));
} else if (childName.equalsIgnoreCase("Displacement")) {
dp = (parseDisplacement(child));
} else if (childName.equalsIgnoreCase("Rotation")) {
rotation = (parseCssParameter(child));
}
}
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine("setting anchorPoint " + ap);
LOGGER.fine("setting displacement " + dp);
}
PointPlacement dpp = factory.createPointPlacement(ap, dp, rotation);
return dpp;
}
/** Internal parse method - made protected for unit testing */
protected LinePlacement parseLinePlacement(Node root) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("parsing linePlacement");
}
Expression offset = ff.literal(0.0);
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase("PerpendicularOffset")) {
offset = parseCssParameter(child);
}
}
LinePlacement dlp = factory.createLinePlacement(offset);
return dlp;
}
/**
* Internal method to parse an AnchorPoint node; protected visibility for testing.
* @param root
* @return
*/
protected AnchorPoint parseAnchorPoint(Node root) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("parsing anchorPoint");
}
Expression x = null;
Expression y = null;
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase("AnchorPointX")) {
x = (parseCssParameter(child));
} else if (childName.equalsIgnoreCase("AnchorPointY")) {
y = (parseCssParameter(child));
}
}
AnchorPoint dap = factory.createAnchorPoint(x, y);
return dap;
}
/** Internal parse method - made protected for unit testing */
protected Displacement parseDisplacement(Node root) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("parsing displacment");
}
Expression x = null;
Expression y = null;
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase("DisplacementX")) {
x = (parseCssParameter(child));
}
if (childName.equalsIgnoreCase("DisplacementY")) {
y = (parseCssParameter(child));
}
}
Displacement dd = factory.createDisplacement(x, y);
return dd;
}
/** Internal parse method - made protected for unit testing */
protected Halo parseHalo(Node root) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("parsing halo");
}
Halo halo = factory.createHalo(factory.createFill(ff.literal("#FFFFFF")), ff.literal(1.0));
NodeList children = root.getChildNodes();
final int length = children.getLength();
for (int i = 0; i < length; i++) {
Node child = children.item(i);
if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
continue;
}
String childName = child.getLocalName();
if (childName == null) {
childName = child.getNodeName();
}
if (childName.equalsIgnoreCase(fillSt)) {
halo.setFill(parseFill(child));
} else if (childName.equalsIgnoreCase("Radius")) {
halo.setRadius(parseCssParameter(child));
}
}
return halo;
}
}