/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2002-2008, 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.gml2.bindings;
import java.util.StringTokenizer;
import javax.xml.namespace.QName;
import org.geotools.gml2.GML;
import org.geotools.xml.AbstractComplexBinding;
import org.geotools.xml.ElementInstance;
import org.geotools.xml.Node;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.CoordinateSequence;
import com.vividsolutions.jts.geom.CoordinateSequenceFactory;
/**
* Binding object for the type http://www.opengis.net/gml:CoordinatesType.
*
* <p>
* <pre>
* <code>
* <complexType name="CoordinatesType">
* <annotation>
* <documentation> Coordinates can be included in a single
* string, but there is no facility for validating
* string content. The value of the 'cs' attribute
* is the separator for coordinate values, and the value of the
* 'ts' attribute gives the tuple separator
* (a single space by default); the default values may
* be changed to reflect local usage. </documentation>
* </annotation>
* <simpleContent>
* <extension base="string">
* <attribute name="decimal" type="string" use="optional" default="."/>
* <attribute name="cs" type="string" use="optional" default=","/>
* <attribute name="ts" type="string" use="optional" default=" "/>
* </extension>
* </simpleContent>
* </complexType>
*
* </code>
* </pre>
* </p>
*
* @generated
*
*
*
* @source $URL$
*/
public class GMLCoordinatesTypeBinding extends AbstractComplexBinding {
CoordinateSequenceFactory csFactory;
public GMLCoordinatesTypeBinding(CoordinateSequenceFactory csFactory) {
this.csFactory = csFactory;
}
/**
* @generated
*/
public QName getTarget() {
return GML.CoordinatesType;
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
*
* @generated modifiable
*/
public Class getType() {
return CoordinateSequence.class;
}
/**
* <!-- begin-user-doc -->
* Returns an object of type {@see com.vividsolutions.jts.geom.CoordinateSequence}
* TODO: this method should do more validation of the string
* <!-- end-user-doc -->
*
* @generated modifiable
*/
public Object parse(ElementInstance instance, Node node, Object value)
throws Exception {
//get the coordinate and tuple seperators
String decimal = ".";
String cs = ",";
String ts = " ";
if (node.getAttribute("decimal") != null) {
decimal = (String) node.getAttribute("decimal").getValue();
}
if (node.getAttribute("cs") != null) {
cs = (String) node.getAttribute("cs").getValue();
}
if (node.getAttribute("ts") != null) {
ts = (String) node.getAttribute("ts").getValue();
}
//do the parsing
String text = instance.getText();
//eliminate newlines, repeated spaces, etc
final String anyBlankSeq = "\\s+";
final String singleSpace = " ";
text = text.replaceAll(anyBlankSeq, singleSpace);
//first tokenize by tuple seperators
StringTokenizer tuples = new StringTokenizer(text, ts);
CoordinateSequence seq = null;
int i = 0;
int ncoords = tuples.countTokens(); //number of coordinates
while (tuples.hasMoreTokens()) {
String tuple = tuples.nextToken();
//next tokenize by coordinate seperator
String[] oords = tuple.split(cs);
//next tokenize by decimal
String x = null;
//next tokenize by decimal
String y = null;
//next tokenize by decimal
String z = null;
//must be at least 1D
x = ".".equals(decimal) ? oords[0] : oords[0].replaceAll(decimal, ".");
//check for 2 and 3 D
if (oords.length > 1) {
y = ".".equals(decimal) ? oords[1] : oords[1].replaceAll(decimal, ".");
}
if (oords.length > 2) {
z = ".".equals(decimal) ? oords[2] : oords[2].replaceAll(decimal, ".");
}
if (seq == null) {
seq = csFactory.create(ncoords, oords.length);
}
seq.setOrdinate(i, CoordinateSequence.X, Double.parseDouble(x));
if (y != null) {
seq.setOrdinate(i, CoordinateSequence.Y, Double.parseDouble(y));
}
if (z != null) {
seq.setOrdinate(i, CoordinateSequence.Z, Double.parseDouble(z));
}
i++;
}
return seq;
}
public Element encode(Object object, Document document, Element value)
throws Exception {
CoordinateSequence coordinates = (CoordinateSequence) object;
StringBuffer buf = new StringBuffer();
for (int i = 0; i < coordinates.size(); i++) {
Coordinate c = coordinates.getCoordinate(i);
buf.append(c.x);
boolean y = (coordinates.getDimension() > 1) && !new Double(c.y).isNaN();
if (y) {
buf.append("," + c.y);
}
boolean z = y && (coordinates.getDimension() > 2) && !new Double(c.z).isNaN();
if (z) {
buf.append("," + c.z);
}
if (i < (coordinates.size() - 1)) {
buf.append(" ");
}
}
value.appendChild(document.createTextNode(buf.toString()));
return value;
}
}