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.io.common.mapping;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.util.UUID;

import org.apache.log4j.Logger;

import eu.etaxonomy.cdm.api.service.IClassificationService;

import eu.etaxonomy.cdm.io.common.CdmImportBase;

import eu.etaxonomy.cdm.io.common.DbImportConfiguratorBase;

import eu.etaxonomy.cdm.io.common.DbImportStateBase;

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

import eu.etaxonomy.cdm.model.reference.Reference;

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

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

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

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

/**

 * @author a.mueller

 * @since 02.03.2010

 * @param <CDM_BASE>

 * @param <STATE>

 */

public class DbImportTaxIncludedInMapper<STATE extends DbImportStateBase<DbImportConfiguratorBase<STATE>,?>> extends DbImportMultiAttributeMapperBase<CdmBase, STATE> {

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

//******************************** FACTORY METHOD ***************************************************/

	public static DbImportTaxIncludedInMapper<?> NewInstance(String dbChildAttribute, String dbChildNamespace, String dbParentAttribute, String parentNamespace, String dbAlternativeParentAttribute, String alternativeParentNamespace, String dbTreeAttribute){

		String citationNamespace = null;

		String citationAttribute = null;

		return new DbImportTaxIncludedInMapper<>(dbChildAttribute, dbChildNamespace, dbParentAttribute, parentNamespace, dbAlternativeParentAttribute, alternativeParentNamespace, dbTreeAttribute, citationAttribute, citationNamespace);

	}

//******************************* ATTRIBUTES ***************************************/

	private String fromAttribute;

	private String toAttribute;

	private String fromNamespace;

	private String toNamespace;

	private String citationAttribute;

	private String citationNamespace;

	private String microCitationAttribute;

	private String treeAttribute;

	private String alternativeAttribute;

	private String alternativeNamespace;

//********************************* CONSTRUCTOR ****************************************/

	/**

	 * @param relatedObjectNamespace

	 * @param mappingImport

	 */

	protected DbImportTaxIncludedInMapper(String fromAttribute, String fromNamespace, String toAttribute, String toNamespace, String alternativeAttribute, String alternativeNamespace, String treeAttribute, String citationAttribute, String citationNamespace) {

		super();

		//TODO make it a single attribute mapper

		this.fromAttribute = fromAttribute;

		this.fromNamespace = fromNamespace;

		this.toAttribute = toAttribute;

		this.toNamespace = toNamespace;

		this.treeAttribute = treeAttribute;

		this.alternativeAttribute = alternativeAttribute;

		this.alternativeNamespace = alternativeNamespace;

		this.citationAttribute = citationAttribute;

		this.citationNamespace = citationNamespace;

	}

//************************************ METHODS *******************************************/

	@Override

    public CdmBase invoke(ResultSet rs, CdmBase cdmBase) throws SQLException {

		STATE state = getState();

		CdmImportBase<?,?> currentImport = state.getCurrentIO();

		if (currentImport instanceof ICheckIgnoreMapper){

			boolean ignoreRecord = ((ICheckIgnoreMapper)currentImport).checkIgnoreMapper(this, rs);

			if (ignoreRecord){

				return cdmBase;

			}

		}

		TaxonBase<?> fromObject = (TaxonBase<?>)getRelatedObject(rs, fromAttribute, fromNamespace);

		TaxonBase<?> toObject = (TaxonBase<?>)getRelatedObject(rs, toAttribute, toNamespace);

		TaxonBase<?> alternativeToObject = (TaxonBase<?>)getRelatedObject(rs, alternativeAttribute, alternativeNamespace);

		String fromId = String.valueOf(rs.getObject(fromAttribute));

		String toId = rs.getObject(toAttribute) == null ? null : String.valueOf(rs.getObject(toAttribute));

		String alternativeToId = rs.getObject(alternativeAttribute) == null ? null : String.valueOf(rs.getObject(alternativeAttribute));

		if (toId == null){

			return fromObject;

		}

		Reference citation = (Reference)getRelatedObject(rs, citationAttribute, citationNamespace);

		String microCitation = null;

		if (citationAttribute != null){

			microCitation = rs.getString(microCitationAttribute);

		}

		//TODO check int

		Integer treeFk = null;

		if (treeAttribute != null){

			treeFk = rs.getInt(treeAttribute);

		}

		if (fromObject == null){

			String warning  = "The child taxon could not be found. Child taxon not added to the tree";

			logger.warn(warning);

			return cdmBase;

		}

		Taxon fromTaxon;

		try {

			fromTaxon = checkTaxonType(fromObject, "Child", fromId);

		} catch (IllegalArgumentException e2) {

			//fromTaxon is null

			return cdmBase;

		}

		if (toObject == null){

			String warning  = "The parent taxon could not be found. Child taxon (" + fromTaxon.getTitleCache() + "; " + fromTaxon.getUuid() + ") not added to the tree";

			logger.warn(warning);

			return cdmBase;

		}

		Taxon toTaxon;

		try {

			toTaxon = checkTaxonType(toObject, "Parent", toId);

		} catch (IllegalArgumentException e) {

			if (alternativeToObject != null){

				try {

					toTaxon = checkTaxonType(alternativeToObject, "Alternative parent", alternativeToId);

				} catch (IllegalArgumentException e1) {

					logger.warn("Alternative taxon is of wrong type: " +  alternativeToObject.getTitleCache() + "; " + alternativeToObject.getUuid());

					return cdmBase;

				}

			}else{

				return cdmBase;

			}

		}

		if (fromTaxon.equals(toTaxon)){

			String warning  = "A taxon may not be a child of itself. Taxon not added to the tree: " + toTaxon.getTitleCache() + ", " + toTaxon.getLsid().toString();

			logger.warn(warning);

			return cdmBase;

		}

		//maps the reference

		makeTaxonomicallyIncluded(state, treeFk, fromTaxon, toTaxon, citation, microCitation);

		return fromTaxon;

	}

	/**

	 * TODO copied from BM import. May be more generic

	 * @param state

	 * @param classificationMap

	 * @param treeRefFk

	 * @param child

	 * @param parent

	 * @param citation

	 * @param microCitation

	 * @return

	 */

	public static final String TAXONOMIC_TREE_NAMESPACE = "Classification";

	private boolean makeTaxonomicallyIncluded(STATE state, Integer classificationRefFk, Taxon child, Taxon parent, Reference citation, String microCitation){

		String treeKey;

		UUID treeUuid;

		if (classificationRefFk == null){

			treeKey = "1";  // there is only one tree and it gets the key '1'

			treeUuid = state.getConfig().getClassificationUuid();

		}else{

			treeKey =String.valueOf(classificationRefFk);

			treeUuid = state.getTreeUuidByTreeKey(treeKey);

		}

		Classification tree = (Classification)state.getRelatedObject(TAXONOMIC_TREE_NAMESPACE, treeKey);

		if (tree == null){

			IClassificationService service = state.getCurrentIO().getClassificationService();

			tree = service.find(treeUuid);

			if (tree == null){

				String treeName = state.getConfig().getClassificationName();

				tree = Classification.NewInstance(treeName);

				tree.setUuid(treeUuid);

				//FIXME tree reference

				//tree.setReference(ref);

				service.save(tree);

			}

			state.addRelatedObject(TAXONOMIC_TREE_NAMESPACE, treeKey, tree);

		}

		TaxonNode childNode = tree.addParentChild(parent, child, citation, microCitation);

		return (childNode != null);

	}

	/**

	 *	//TODO copied from DbImportObjectMapper. Maybe these can be merged again in future

	 * @param rs

	 * @param dbAttribute

	 * @return

	 * @throws SQLException

	 */

	@Override

    protected CdmBase getRelatedObject(ResultSet rs, String dbAttribute, String namespace) throws SQLException {

		CdmBase result = null;

		if (dbAttribute != null){

			Object dbValue = rs.getObject(dbAttribute);

			String id = String.valueOf(dbValue);

			DbImportStateBase<?,?> state = importMapperHelper.getState();

			result = state.getRelatedObject(namespace, id);

		}

		return result;

	}

	/**

	 * Checks if cdmBase is of type Taxon

	 * @param taxonBase

	 * @param typeString

	 * @param id

	 * @return

	 */

	private Taxon checkTaxonType(TaxonBase<?> taxonBase, String typeString, String id) throws IllegalArgumentException{

		if (! taxonBase.isInstanceOf(Taxon.class)){

			String warning = typeString + " (" + id + ") is not of type Taxon but of type " + taxonBase.getClass().getSimpleName();

			logger.warn(warning);

			throw new IllegalArgumentException(warning);

		}

		return (CdmBase.deproxy(taxonBase, Taxon.class));

	}

}