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JPA support for Querydsl

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/*
 * Copyright 2011, Mysema Ltd
 * 
 * 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 com.mysema.query.jpa.hibernate;

import javax.inject.Provider;

import org.hibernate.Session;

import com.mysema.query.jpa.HQLTemplates;
import com.mysema.query.jpa.JPQLQueryFactory;
import com.mysema.query.jpa.JPQLTemplates;
import com.mysema.query.types.EntityPath;

/**
 * Factory class for query and DML clause creation
 *
 * @author tiwe
 *
 */
public class HibernateQueryFactory implements JPQLQueryFactory {

    private final JPQLTemplates templates;

    private final Provider session;

    public HibernateQueryFactory(Provider session) {
        this(HQLTemplates.DEFAULT, session);
    }

    public HibernateQueryFactory(JPQLTemplates templates, Provider session) {
        this.session = session;
        this.templates = templates;
    }

    public HibernateDeleteClause delete(EntityPath path) {
        return new HibernateDeleteClause(session.get(), path, templates);
    }

    public HibernateQuery from(EntityPath from) {
        return query().from(from);
    }

    public HibernateUpdateClause update(EntityPath path) {
        return new HibernateUpdateClause(session.get(), path, templates);
    }

    public HibernateQuery query() {
        return new HibernateQuery(session.get(), templates);
    }

    public HibernateSubQuery subQuery() {
        return new HibernateSubQuery();
    }
}