Library: org.gvsig.sldtools

/*******************************************************************************

 *

 *   gvSIG. Desktop Geographic Information System.

 *  

 *   Copyright (C) 2007-2013 gvSIG Association.

 *  

 *   This program is free software; you can redistribute it and/or

 *   modify it under the terms of the GNU General Public License

 *   as published by the Free Software Foundation; either version 3

 *   of the License, or (at your option) any later version.

 *  

 *   This program 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 General Public License for more details.

 *  

 *   You should have received a copy of the GNU General Public License

 *   along with this program; if not, write to the Free Software

 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 *   MA  02110-1301, USA.

 *  

 *   For any additional information, do not hesitate to contact us

 *   at info AT gvsig.com, or visit our website www.gvsig.com.

 *   

 *******************************************************************************/

package org.gvsig.sldsupport.impl.sld.parsing.filteroperator.logic;

import java.io.IOException;

import org.xmlpull.v1.XmlPullParser;

import org.xmlpull.v1.XmlPullParserException;

import org.gvsig.sldsupport.exception.InvalidSLDObjectException;

import org.gvsig.sldsupport.exception.SLDReadException;

import org.gvsig.sldsupport.exception.UnsupportedSLDObjectException;

import org.gvsig.sldsupport.impl.sld.parsing.filteroperator.FilterOperatorElement;

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

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

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

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

import org.gvsig.sldsupport.sld.filter.operator.logic.SLDUnaryLogicOperator;

public class UnaryLogicOperatorElement {

    public static void append(SLDUnaryLogicOperator obj, XmlBuilder xb,

        String version) throws InvalidSLDObjectException,

        UnsupportedSLDObjectException {

        xb.openTag(obj.getOperatorType());

        // ==========================

        if (obj.getOperator() == null) {

            throw new InvalidSLDObjectException(obj.getOperatorType(),

                "No operand found in unary operator");

        }

        FilterOperatorElement.append(obj.getOperator(), xb, version);

        // ==========================

        xb.closeTag();

    }

    public static SLDUnaryLogicOperator parse(XmlPullParser parser,

        String version) throws XmlPullParserException, IOException,

        SLDReadException {

        SLDUnaryLogicOperator resp = new SLDUnaryLogicOperator();

        String op_type = parser.getName();

        if (SLDUtils.isStr(op_type, FilterTags.NOT)) {

            resp.setOperatorType(FilterTags.NOT);

        } else {

            throw new SLDReadException("Unknwon unary operator: " + op_type);

        }

        parser.nextTag();

        SLDFilterOperator foper = FilterOperatorElement.parse(parser, version);

        resp.setOperator(foper);

        parser.require(XmlPullParser.END_TAG, null, FilterTags.NOT);

        parser.nextTag();

        return resp;

    }

}