/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2010, Red Hat, Inc. and/or its affiliates or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat, Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.search.spi;

import org.hibernate.search.SearchFactory;
import org.hibernate.search.backend.spi.Worker;
import org.hibernate.search.engine.spi.EntityIndexBinder;
import org.hibernate.search.exception.ErrorHandler;
import org.hibernate.search.query.engine.spi.HSQuery;
import org.hibernate.search.query.engine.spi.TimeoutExceptionFactory;

/**
 * This contract is considered experimental.
 *
 * This contract gives access to lower level APIs of Hibernate Search for
 * frameworks integrating with it. The piece of code creating the SearchFactory should
 * use this contract. It should however pass the higher level {@link SearchFactory} contract to
 * its clients.
 *
 * It also allows modification of some of the search factory internals:
 *  - today allow addition of new indexed classes.
 *
 * @experimental
 * @author Emmanuel Bernard
 */
public interface SearchFactoryIntegrator extends SearchFactory {

	EntityIndexBinder getIndexBindingForEntity(Class<?> entityType);

	/**
	 * Add the following classes to the SearchFactory. If these classes are new to the SearchFactory this
	 * will trigger a reconfiguration.
	 */
	void addClasses(Class<?>... classes);

	//TODO consider accepting SearchConfiguration or SearchMapping

	Worker getWorker();

	void close();

	/**
	 * Return an Hibernate Search query object.
	 * This object uses fluent APIs to define the query executed.
	 * Offers a few execution approaches:
	 *  - return the list of results eagerly
	 *  - return the list of results lazily
	 *  - get the number of results
	 */
	HSQuery createHSQuery();

	/**
	 * @return true if the SearchFactory was stopped
	 */
	boolean isStopped();

	/**
	 * Used to catch exceptions in all synchronous operations; but default they are logged, the user
	 * can configure alternative error management means.
	 * @return the configured ErrorHandler, global to the SearchFactory
	 */
	ErrorHandler getErrorHandler();

	TimeoutExceptionFactory getDefaultTimeoutExceptionFactory();

}
