at.molindo.esi4j.module.hibernate.scrolling.SimpleQueryProvider.java Source code

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Here is the source code for at.molindo.esi4j.module.hibernate.scrolling.SimpleQueryProvider.java

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/**
 * Copyright 2010 Molindo GmbH
 *
 * 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 at.molindo.esi4j.module.hibernate.scrolling;

import org.hibernate.Criteria;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.criterion.DetachedCriteria;

public class SimpleQueryProvider implements QueryProvider {

    private final String _hql;
    private final DetachedCriteria _criteria;
    private final boolean _ordered;

    public SimpleQueryProvider(String hql, boolean ordered) {
        if (hql == null) {
            throw new NullPointerException("hql");
        }
        _hql = hql;
        _criteria = null;
        _ordered = ordered;
    }

    public SimpleQueryProvider(DetachedCriteria criteria, boolean ordered) {
        if (criteria == null) {
            throw new NullPointerException("criteria");
        }
        _criteria = criteria;
        _hql = null;
        _ordered = ordered;
    }

    @Override
    public boolean isOrdered() {
        return _ordered;
    }

    @Override
    public final Criteria createCriteria(Class<?> type, Session session) {
        return _criteria == null ? null : _criteria.getExecutableCriteria(session);
    }

    @Override
    public final Query createQuery(Class<?> type, Session session) {
        return _hql == null ? null : session.createQuery(_hql);
    }

}