IQuery.java

/*******************************************************************************
 * Copyright (c) 2006, 2015 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation
 *
 ******************************************************************************/
package org.eclipse.persistence.jpa.jpql.tools.spi;

/**
 * The external representation of a JPQL query.
 * <p>
 * Provisional API: This interface is part of an interim API that is still under development and
 * expected to change significantly before reaching stability. It is available at this early stage
 * to solicit feedback from pioneering adopters on the understanding that any code that uses this
 * API will almost certainly be broken (repeatedly) as the API evolves.
 *
 * @version 2.3
 * @since 2.3
 * @author Pascal Filion
 */
public interface IQuery extends IExternalForm {

    /**
     * Returns the string representation of the JPQL query.
     *
     * @return A non-<code>null</code> string representation of the JPQL query
     */
    String getExpression();

    /**
     * Retrieves the provider of managed types.
     *
     * @return The object that has access to the application's managed types.
     */
    IManagedTypeProvider getProvider();
}