    001    //$HeadURL$
    002    /*----------------------------------------------------------------------------
    003     This file is part of deegree, http://deegree.org/
    004     Copyright (C) 2001-2009 by:
    005       Department of Geography, University of Bonn
    006     and
    007       lat/lon GmbH
    008
    009     This library is free software; you can redistribute it and/or modify it under
    010     the terms of the GNU Lesser General Public License as published by the Free
    011     Software Foundation; either version 2.1 of the License, or (at your option)
    012     any later version.
    013     This library is distributed in the hope that it will be useful, but WITHOUT
    014     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    015     FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
    016     details.
    017     You should have received a copy of the GNU Lesser General Public License
    018     along with this library; if not, write to the Free Software Foundation, Inc.,
    019     59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    020
    021     Contact information:
    022
    023     lat/lon GmbH
    024     Aennchenstr. 19, 53177 Bonn
    025     Germany
    026     http://lat-lon.de/
    027
    028     Department of Geography, University of Bonn
    029     Prof. Dr. Klaus Greve
    030     Postfach 1147, 53001 Bonn
    031     Germany
    032     http://www.geographie.uni-bonn.de/deegree/
    033
    034     e-mail: info@deegree.org
    035    ----------------------------------------------------------------------------*/
    036
    037
    038    package org.deegree.security.owsrequestvalidator.csw;
    039
    040    import java.io.IOException;
    041    import java.io.StringReader;
    042    import java.util.List;
    043
    044    import org.deegree.framework.xml.XMLFragment;
    045    import org.deegree.model.filterencoding.AbstractFilter;
    046    import org.deegree.model.filterencoding.ComplexFilter;
    047    import org.deegree.model.filterencoding.FilterConstructionException;
    048    import org.deegree.model.filterencoding.Literal;
    049    import org.deegree.model.filterencoding.LogicalOperation;
    050    import org.deegree.model.filterencoding.Operation;
    051    import org.deegree.model.filterencoding.OperationDefines;
    052    import org.deegree.model.filterencoding.PropertyIsCOMPOperation;
    053    import org.deegree.model.filterencoding.PropertyName;
    054    import org.deegree.security.owsrequestvalidator.Policy;
    055    import org.deegree.security.owsrequestvalidator.ResponseValidator;
    056    import org.xml.sax.SAXException;
    057
    058    /**
    059     *
    060     *
    061     * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
    062     * @author last edited by: $Author: poth $
    063     *
    064     * @version $Revision: 6251 $, $Date: 2007-03-19 16:59:28 +0100 (Mo, 19 Mrz 2007) $
    065     */
    066    abstract class AbstractCSWResponseValidator extends ResponseValidator {
    067
    068        private static final String PROPERTY_INSTANCEFILTER = "instanceFilter";
    069
    070        /**
    071         *
    072         * @param policy
    073         */
    074        public AbstractCSWResponseValidator( Policy policy ) {
    075            super( policy );
    076        }
    077
    078        /**
    079         *
    080         * @param operation
    081         * @return the extracted filter
    082         * @throws IOException
    083         * @throws SAXException
    084         * @throws FilterConstructionException
    085         */
    086        protected ComplexFilter extractInstanceFilter( Operation operation, List<ComplexFilter> foundFilters )
    087                                throws SAXException, IOException, FilterConstructionException {
    088            ComplexFilter filter = null;
    089            if ( operation.getOperatorId() == OperationDefines.AND || operation.getOperatorId() == OperationDefines.OR ) {
    090                List<Operation> arguments = ( (LogicalOperation) operation ).getArguments();
    091                for ( int i = 0; i < arguments.size(); i++ ) {
    092                    Operation op = arguments.get( i );
    093                    filter = extractInstanceFilter( op, foundFilters );
    094                    if ( filter != null ) {
    095                      //  foundFilters.add( filter );
    096                    }
    097                    /*
    098                     * if ( op.getOperatorId() == OperationDefines.PROPERTYISEQUALTO ) { PropertyName pn = (PropertyName) (
    099                     * (PropertyIsCOMPOperation) op ).getFirstExpression(); if ( PROPERTY_INSTANCEFILTER.equals(
    100                     * pn.getValue().getAsString() ) ) { Literal literal = (Literal) ( (PropertyIsCOMPOperation) op
    101                     * ).getSecondExpression(); StringReader sr = new StringReader( literal.getValue() ); XMLFragment xml =
    102                     * new XMLFragment( sr, XMLFragment.DEFAULT_URL ); filter = (ComplexFilter) AbstractFilter.buildFromDOM(
    103                     * xml.getRootElement() ); } }
    104                     */
    105                }
    106            } else {
    107                if ( operation.getOperatorId() == OperationDefines.PROPERTYISEQUALTO ) {
    108                    PropertyName pn = (PropertyName) ( (PropertyIsCOMPOperation) operation ).getFirstExpression();
    109                    if ( PROPERTY_INSTANCEFILTER.equals( pn.getValue().getAsString() ) ) {
    110                        Literal literal = (Literal) ( (PropertyIsCOMPOperation) operation ).getSecondExpression();
    111                        StringReader sr = new StringReader( literal.getValue() );
    112                        XMLFragment xml = new XMLFragment( sr, XMLFragment.DEFAULT_URL );
    113                        filter = (ComplexFilter) AbstractFilter.buildFromDOM( xml.getRootElement(), false );
    114                        if ( filter != null ) {
    115                            foundFilters.add( filter );
    116                        }
    117                    }
    118                }
    119            }
    120            return filter;
    121        }
    122
    123    }