demo.repository.UserSearchCriteriaGenerator.java Source code

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Here is the source code for demo.repository.UserSearchCriteriaGenerator.java

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/*
 * Copyright 2009 Grepo Committers.
 *
 * 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 demo.repository;

import org.apache.commons.lang.StringUtils;
import org.codehaus.grepo.query.commons.aop.QueryMethodParameterInfo;
import org.codehaus.grepo.query.hibernate.context.HibernateQueryExecutionContext;
import org.codehaus.grepo.query.hibernate.generator.CriteriaGeneratorBase;
import org.hibernate.criterion.CriteriaSpecification;
import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Restrictions;

import demo.domain.User;

/**
 * @author dguggi
 */
public class UserSearchCriteriaGenerator extends CriteriaGeneratorBase {

    private static final long serialVersionUID = 6376344505209487740L;

    /**
     * {@inheritDoc}
     */
    @Override
    protected CriteriaSpecification createCriteria(QueryMethodParameterInfo qmpi, //
            HibernateQueryExecutionContext context) {
        String firstname = qmpi.getParameterByParamName("fn", String.class);
        String lastname = qmpi.getParameterByParamName("ln", String.class);

        DetachedCriteria criteria = DetachedCriteria.forClass(User.class);
        if (StringUtils.isNotEmpty(firstname)) {
            criteria.add(Restrictions.eq("firstname", firstname));
        }
        if (StringUtils.isNotEmpty(lastname)) {
            criteria.add(Restrictions.eq("lastname", lastname));
        }
        return criteria;
    }

}