org.ktunaxa.referral.server.layer.FullTextCriteriaVisitor.java Source code

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Here is the source code for org.ktunaxa.referral.server.layer.FullTextCriteriaVisitor.java

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/*
 * Ktunaxa Referral Management System.
 *
 * Copyright (C) see version control system
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.ktunaxa.referral.server.layer;

import java.text.DateFormat;

import org.geomajas.layer.hibernate.CriteriaVisitor;
import org.geomajas.layer.hibernate.HibernateFeatureModel;
import org.hibernate.criterion.Restrictions;
import org.ktunaxa.referral.server.service.KtunaxaConstant;
import org.opengis.filter.PropertyIsLike;
import org.opengis.filter.expression.Expression;
import org.opengis.filter.expression.PropertyName;

/**
 * Special handling of full text attribute search.
 * 
 * @author Jan De Moerloose
 *
 */
public class FullTextCriteriaVisitor extends CriteriaVisitor {

    public FullTextCriteriaVisitor(HibernateFeatureModel featureModel, DateFormat dateFormat) {
        super(featureModel, dateFormat);
    }

    @Override
    public Object visit(PropertyIsLike filter, Object userData) {
        Expression expression = filter.getExpression();
        if (expression instanceof PropertyName) {
            String propertyName = ((PropertyName) expression).getPropertyName();
            String value = filter.getLiteral();
            if (KtunaxaConstant.ATTRIBUTE_FULL_TEXT.equalsIgnoreCase(propertyName)) {
                return Restrictions.sqlRestriction(
                        KtunaxaConstant.ATTRIBUTE_FULL_TEXT + " @@ " + "to_tsquery('" + value + ":*')");
            } else {
                return super.visit(filter, userData);
            }
        } else {
            return super.visit(filter, userData);
        }
    }

}