/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2003-2008, 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.gml.producer;
import java.util.logging.Logger;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.GeometryCollection;
import com.vividsolutions.jts.geom.LineString;
import com.vividsolutions.jts.geom.MultiLineString;
import com.vividsolutions.jts.geom.MultiPoint;
import com.vividsolutions.jts.geom.MultiPolygon;
import com.vividsolutions.jts.geom.Point;
import com.vividsolutions.jts.geom.Polygon;
//import org.geotools.feature.*;
/*
* Utilities for gml and xml;
* @author Chris Holmes, TOPP
* @source $URL$
*/
final class GMLUtils {
/** The logger for the filter module. */
private static final Logger LOGGER = org.geotools.util.logging.Logging.getLogger(
"org.geotools.gml.producer");
/** Internal representation of URL used to represent GML */
public static final String GML_URL = "http://www.opengis.net/gml";
/** Internal representation of OGC SF Point */
protected static final int POINT = 1;
/** Internal representation of OGC SF LineString */
protected static final int LINESTRING = 2;
/** Internal representation of OGC SF Polygon */
protected static final int POLYGON = 3;
/** Internal representation of OGC SF MultiPoint */
protected static final int MULTIPOINT = 4;
/** Internal representation of OGC SF MultiLineString */
protected static final int MULTILINESTRING = 5;
/** Internal representation of OGC SF MultiPolygon */
protected static final int MULTIPOLYGON = 6;
/** Internal representation of OGC SF MultiGeometry */
protected static final int MULTIGEOMETRY = 7;
/**
* private constructor so default is not used.
*/
private GMLUtils() {
}
/**
* Gets the String representation for the given Geometry
*
* @param geometry a Geometry
*
* @return String representation of geometry
*/
public static String getGeometryName(Geometry geometry) {
LOGGER.entering("GMLUtils", "getGeometryName", geometry);
String returnValue = null;
if (geometry instanceof Point) {
returnValue = "Point";
} else if (geometry instanceof LineString) {
returnValue = "LineString";
} else if (geometry instanceof Polygon) {
returnValue = "Polygon";
} else if (geometry instanceof MultiPoint) {
returnValue = "MultiPoint";
} else if (geometry instanceof MultiLineString) {
returnValue = "MultiLineString";
} else if (geometry instanceof MultiPolygon) {
returnValue = "MultiPolygon";
} else if (geometry instanceof GeometryCollection) {
returnValue = "GeometryCollection";
} else {
//HACK!!! throw exception
returnValue = null;
}
LOGGER.exiting("GMLUtils", "getGeometryName", returnValue);
return returnValue;
}
/**
* Gets the internal representation for the given Geometry
*
* @param geometry a Geometry
*
* @return int representation of Geometry
*/
public static int getGeometryType(Geometry geometry) {
//LOGGER.entering("GMLUtils", "getGeometryType", geometry);
int returnValue = -1;
if (geometry instanceof Point) {
//LOGGER.finest("found point");
returnValue = POINT;
} else if (geometry instanceof LineString) {
//LOGGER.finest("found linestring");
returnValue = LINESTRING;
} else if (geometry instanceof Polygon) {
//LOGGER.finest("found polygon");
returnValue = POLYGON;
} else if (geometry instanceof MultiPoint) {
//LOGGER.finest("found multiPoint");
returnValue = MULTIPOINT;
} else if (geometry instanceof MultiLineString) {
returnValue = MULTILINESTRING;
} else if (geometry instanceof MultiPolygon) {
returnValue = MULTIPOLYGON;
} else if (geometry instanceof GeometryCollection) {
returnValue = MULTIGEOMETRY;
} else {
returnValue = -1;
//HACK!!! throw exception.
}
//LOGGER.exiting("GMLUtils", "getGeometryType", new Integer(returnValue));
return returnValue;
}
public static String getMemberName(int geometryType) {
//String member;
switch (geometryType) {
case GMLUtils.MULTIPOINT:
return "pointMember";
case GMLUtils.MULTILINESTRING:
return "lineStringMember";
case GMLUtils.MULTIPOLYGON:
return "polygonMember";
default:
return "geometryMember";
}
}
/**
* Parses the passed string, and encodes the special characters (used in
* xml for special purposes) with the appropriate codes. e.g. right
* bracket char is changed to '<'
*
* @param inData the string to encode.
*
* @return the encoded string. Returns null, if null is passed as argument
*
* @task TODO: Take output as a param, write directly to out, send the
* characters straight out, doing translation on the fly.
*/
public static String encodeXML(String inData) {
//LOGGER.entering("GMLUtils", "encodeXML", inData);
//return null, if null is passed as argument
if (inData == null) {
return null;
}
//if no special characters, just return
//(for optimization. Though may be an overhead, but for most of the
//strings, this will save time)
if ((inData.indexOf('&') == -1) && (inData.indexOf('<') == -1)
&& (inData.indexOf('>') == -1) && (inData.indexOf('\'') == -1)
&& (inData.indexOf('\"') == -1)) {
return inData;
}
//get the length of input String
int length = inData.length();
//create a StringBuffer of double the size (size is just for guidance
//so as to reduce increase-capacity operations. The actual size of
//the resulting string may be even greater than we specified, but is
//extremely rare)
StringBuffer buffer = new StringBuffer(2 * length);
char charToCompare;
//iterate over the input String
for (int i = 0; i < length; i++) {
charToCompare = inData.charAt(i);
//if the ith character is special character, replace by code
if (charToCompare == '&') {
buffer.append("&");
} else if (charToCompare == '<') {
buffer.append("<");
} else if (charToCompare == '>') {
buffer.append(">");
} else if (charToCompare == '\"') {
buffer.append(""");
} else if (charToCompare == '\'') {
buffer.append("'");
} else {
buffer.append(charToCompare);
}
}
//LOGGER.exiting("GMLUtils", "encodeXML", buffer.toString());
//return the encoded string
return buffer.toString();
}
}