EDIT

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy 

* http://www.e-taxonomy.eu

* 

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.api.service;

import java.util.Collection;

import java.util.HashMap;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import java.util.UUID;

import org.apache.log4j.Logger;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Qualifier;

import org.springframework.context.ApplicationContext;

import org.springframework.context.ApplicationContextAware;

import org.springframework.transaction.annotation.Transactional;

import eu.etaxonomy.cdm.model.common.CdmBase;

import eu.etaxonomy.cdm.persistence.dao.common.ICdmEntityDao;

public abstract class ServiceBase<T extends CdmBase> implements IService<T>, ApplicationContextAware {

	static Logger logger = Logger.getLogger(ServiceBase.class);

	//flush after saving this number of objects

	int flushAfterNo = 2000;

	protected ApplicationContext appContext;

	@Autowired

	@Qualifier("cdmDao")

	protected ICdmEntityDao<T> dao;

	protected void setEntityDao(ICdmEntityDao<T> dao){

		this.dao=dao;

	}

	/* (non-Javadoc)

	 * @see eu.etaxonomy.cdm.api.service.Iyyy#setApplicationContext(org.springframework.context.ApplicationContext)

	 */

	public void setApplicationContext(ApplicationContext appContext){

		this.appContext = appContext;

	}

	protected T getCdmObjectByUuid(UUID uuid){

		return dao.findByUuid(uuid);

	}

	public int count(Class<T> clazz) {

		return dao.count(clazz);

	}

	@Transactional(readOnly = false)

	protected UUID saveCdmObject(T cdmObj){

		if (logger.isDebugEnabled()){logger.debug("Save cdmObj: " + (cdmObj == null? null: cdmObj.toString()));}

		return dao.saveOrUpdate(cdmObj);

	}

	@Transactional(readOnly = false)

	protected <S extends T> Map<UUID, S> saveCdmObjectAll(Collection<S> cdmObjCollection){

		int types = cdmObjCollection.getClass().getTypeParameters().length;

		if (types > 0){

			if (logger.isDebugEnabled()){logger.debug("ClassType: + " + cdmObjCollection.getClass().getTypeParameters()[0]);}

		}

		Map<UUID, S> resultMap = new HashMap<UUID, S>();

		Iterator<S> iterator = cdmObjCollection.iterator();

		int i = 0;

			while(iterator.hasNext()){

				if ( ( (i % 5000) == 0) && (i > 0)   ){logger.debug("Saved " + i + " objects" );}

				S cdmObj = iterator.next();

				UUID uuid = saveCdmObject(cdmObj);

				if (logger.isDebugEnabled()){logger.debug("Save cdmObj: " + (cdmObj == null? null: cdmObj.toString()));}

				resultMap.put(uuid, cdmObj);

				i++;

				if ( (i % flushAfterNo) == 0){

					try{

									logger.debug("flush");

					dao.flush();

					}catch(Exception e){

						logger.error("UUUIIIII");

						e.printStackTrace();

					}

				}

			}

		if ( logger.isInfoEnabled() ){logger.info("Saved " + i + " objects" );}

		return resultMap;

	}

	@Transactional(readOnly = false)

	protected UUID removeCdmObject(T cdmObj){

		if (logger.isDebugEnabled()){logger.debug("Save cdmObj: " + (cdmObj == null? null: cdmObj.toString()));}

		return dao.delete(cdmObj);

	}

	public List<T> list(int limit, int start) {

		return dao.list(limit, start);

	}

	public List<T> rows(String tableName, int limit, int start) {

		return dao.rows(tableName, limit, start);

	}

}