UnprefixerFilterVisitor.java

/*
 *    Constellation - An open source and standard compliant SDI
 *    http://www.constellation-sdi.org
 *
 * Copyright 2014 Geomatys.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.constellation.wfs.ws;

import org.geotoolkit.feature.type.FeatureType;
import org.geotoolkit.util.NamesExt;
import org.geotoolkit.filter.visitor.DuplicatingFilterVisitor;
import org.opengis.filter.expression.PropertyName;

/**
 *
 * @author Guilhem Legal (Geomatys)
 */
public class UnprefixerFilterVisitor extends DuplicatingFilterVisitor{

    private final FeatureType ft;

    public UnprefixerFilterVisitor(final FeatureType ft) {
        this.ft = ft;
    }

    @Override
    public Object visit(final PropertyName expression, final Object extraData) {
        String prefix = "";
        if (NamesExt.getNamespace(ft.getName()) != null) {
            prefix = "{" + NamesExt.getNamespace(ft.getName()) + "}";
        }
        prefix = prefix + ft.getName().tip().toString();
        if (expression.getPropertyName().startsWith(prefix)) {
            final String newPropertyName = expression.getPropertyName().substring(prefix.length());
            return getFactory(extraData).property(newPropertyName);
        }
        return super.visit(expression, extraData);
    }
}