EDIT

// $Id$

/**

* 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.persistence.dao.hibernate.taxon;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import java.util.Set;

import java.util.UUID;

import org.apache.log4j.Logger;

import org.hibernate.Query;

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

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

import org.springframework.stereotype.Repository;

import eu.etaxonomy.cdm.model.name.Rank;

import eu.etaxonomy.cdm.model.taxon.Classification;

import eu.etaxonomy.cdm.model.taxon.TaxonNode;

import eu.etaxonomy.cdm.persistence.dao.hibernate.common.IdentifiableDaoBase;

import eu.etaxonomy.cdm.persistence.dao.taxon.ITaxonNodeDao;

import eu.etaxonomy.cdm.persistence.dao.taxon.IClassificationDao;

/**

 * @author a.mueller

 * @created 16.06.2009

 * @version 1.0

 */

@Repository

@Qualifier("classificationDaoHibernateImpl")

public class ClassificationDaoHibernateImpl extends IdentifiableDaoBase<Classification>

		implements IClassificationDao {

	@SuppressWarnings("unused")

	private static final Logger logger = Logger.getLogger(ClassificationDaoHibernateImpl.class);

	@Autowired

	private ITaxonNodeDao taxonNodeDao;

	public ClassificationDaoHibernateImpl() {

		super(Classification.class);

		indexedClasses = new Class[1];

		indexedClasses[0] = Classification.class;

	}

	@SuppressWarnings("unchecked")

	public List<TaxonNode> loadRankSpecificRootNodes(Classification classification, Rank rank, List<String> propertyPaths){

		List<TaxonNode> results;

		if(rank == null){

			classification = load(classification.getUuid());

			results = new ArrayList(); 

			results.addAll(classification.getChildNodes());

		} else {

			String hql = "SELECT DISTINCT tn FROM TaxonNode tn LEFT JOIN tn.childNodes as ctn" +

				" WHERE tn.classification = :classification  AND (" +

				" tn.taxon.name.rank = :rank" +

				" OR (tn.taxon.name.rank.orderIndex > :rankOrderIndex AND tn.parent = null)" +

				" OR (tn.taxon.name.rank.orderIndex < :rankOrderIndex AND ctn.taxon.name.rank.orderIndex > :rankOrderIndex)" +

				" )";

			Query query = getSession().createQuery(hql);

			query.setParameter("rank", rank);

			query.setParameter("rankOrderIndex", rank.getOrderIndex());

			query.setParameter("classification", classification);

			results = query.list();

		}

		defaultBeanInitializer.initializeAll(results, propertyPaths);

		return results;

	}

	@Override

	public UUID delete(Classification persistentObject){

		//delete all childnodes, then delete the tree

		Set<TaxonNode> nodes = persistentObject.getChildNodes();

		Iterator<TaxonNode> nodesIterator = nodes.iterator();

		while(nodesIterator.hasNext()){

			TaxonNode node = nodesIterator.next();

			taxonNodeDao.delete(node);

		}

		super.delete(persistentObject);

		return persistentObject.getUuid();

	}

}