Application: gvSIG desktop

package org.gvsig.sldsupport.impl.sld1_0_0.parsing.filteroperator.comparison;

import java.io.IOException;

import org.gvsig.sldsupport.exception.SLDReadException;

import org.gvsig.sldsupport.impl.util.SLDUtils;

import org.gvsig.sldsupport.sld.filter.FilterTags;

import org.gvsig.sldsupport.sld.filter.operator.comparison.SLDIsNullOperator;

import org.kxml2.io.KXmlParser;

import org.xmlpull.v1.XmlPullParser;

import org.xmlpull.v1.XmlPullParserException;

public class IsNullComparisonElement {

        public static SLDIsNullOperator parse(XmlPullParser parser , String version)

                        throws XmlPullParserException, IOException, SLDReadException {

                parser.require(KXmlParser.START_TAG, null, FilterTags.PROPERTYISNULL);

                SLDIsNullOperator resp = new SLDIsNullOperator();

                int tag = 0;

                String txt = null;

                tag = parser.nextTag();

                String name = parser.getName();

                while (!(SLDUtils.isStr(name, FilterTags.PROPERTYISNULL)

                                && tag == KXmlParser.END_TAG)) {

                        switch (tag) {

                        case KXmlParser.START_TAG:

                                if (SLDUtils.isStr(name, FilterTags.PROPERTYNAME)) {

                                        txt = parser.nextText();

                                        resp.setPropertyName(txt);

                                        parser.nextTag();

                                        break;

                                }

                                /*

                                 * Any other entity causes parsing error

                                 */

                                throw new SLDReadException(

                                                "Bad SLD file. Unexpected entity is IsNullOperator: " + name);

                        case KXmlParser.END_TAG:

                                break;

                        case KXmlParser.TEXT:

                                break;

                        }

                        tag = parser.getEventType();

                        name = parser.getName();

                }

                parser.nextTag();

                return resp;

        }

}