Java 类org.hibernate.hql.ast.ASTQueryTranslatorFactory 实例源码

private static String hqlToSql(String hqlQueryText, SessionFactory sessionFactory) {
    if (hqlQueryText != null && hqlQueryText.trim().length() > 0
            && sessionFactory != null) {
        final QueryTranslatorFactory translatorFactory = new ASTQueryTranslatorFactory();
        final SessionFactoryImplementor factory = (SessionFactoryImplementor) sessionFactory;
        final QueryTranslator translator = translatorFactory
                .createQueryTranslator(hqlQueryText, hqlQueryText,
                        Collections.EMPTY_MAP, factory);
        translator.compile(Collections.EMPTY_MAP, false);
        return translator.getSQLString();
    }
    return null;
}

/**
 * HQL to SQL translator
 */
public static String toSql(String hql) {
    if (hql != null && hql.trim().length() > 0) {
        final QueryTranslatorFactory qtf = new ASTQueryTranslatorFactory();
        final SessionFactoryImplementor sfi = (SessionFactoryImplementor) sessionFactory;
        final QueryTranslator translator = qtf.createQueryTranslator(hql, hql, Collections.EMPTY_MAP, sfi);
        translator.compile(Collections.EMPTY_MAP, false);
        return translator.getSQLString();
    }

    return null;
}

private void assertEjbqlEqualsHql(String ejbql, String hql) {
    QueryTranslatorFactory ast = new ASTQueryTranslatorFactory();

    QueryTranslator queryTranslator = ast.createQueryTranslator( hql, hql, Collections.EMPTY_MAP, sfi() );
    queryTranslator.compile( Collections.EMPTY_MAP, true );
    String hqlSql = queryTranslator.getSQLString();

    queryTranslator = ast.createQueryTranslator( ejbql, ejbql, Collections.EMPTY_MAP, sfi() );
    queryTranslator.compile( Collections.EMPTY_MAP, true );
    String ejbqlSql = queryTranslator.getSQLString();

    assertEquals( hqlSql, ejbqlSql );
}

private QueryTranslatorImpl compile(String input) {
    QueryTranslatorFactory ast = new ASTQueryTranslatorFactory();
    QueryTranslator queryTranslator = ast.createQueryTranslator( input, input, Collections.EMPTY_MAP, sfi() );
    queryTranslator.compile( Collections.EMPTY_MAP, true );

    return ( QueryTranslatorImpl ) queryTranslator;
}

private void compileWithAstQueryTranslator(String hql, boolean scalar) {
    Map replacements = new HashMap();
    QueryTranslatorFactory ast = new ASTQueryTranslatorFactory();
    SessionFactoryImplementor factory = getSessionFactoryImplementor();
    QueryTranslator newQueryTranslator = ast.createQueryTranslator( hql, hql, Collections.EMPTY_MAP, factory );
    newQueryTranslator.compile( replacements, scalar );
}

private QueryTranslatorImpl createNewQueryTranslator(String hql, Map replacements, boolean scalar, SessionFactoryImplementor factory) {
    QueryTranslatorFactory ast = new ASTQueryTranslatorFactory();
    QueryTranslatorImpl newQueryTranslator = ( QueryTranslatorImpl ) ast.createQueryTranslator( hql, hql, Collections.EMPTY_MAP, factory );
    newQueryTranslator.compile( replacements, scalar );
    return newQueryTranslator;
}

private String toSql(String hql) {
    QueryTranslatorFactory ast = new ASTQueryTranslatorFactory();
    QueryTranslator queryTranslator = ast.createQueryTranslator( hql, hql, Collections.EMPTY_MAP, sfi() );
    queryTranslator.compile( Collections.EMPTY_MAP, true );
    return queryTranslator.getSQLString();
}

public void configure(Configuration cfg) {
    super.configure( cfg );
    cfg.setProperty( Environment.USE_QUERY_CACHE, "true" );
    cfg.setProperty( Environment.GENERATE_STATISTICS, "true" );
    cfg.setProperty( Environment.QUERY_TRANSLATOR, ASTQueryTranslatorFactory.class.getName() );
}