EDIT

// $Id$

/**

* Copyright (C) 2009 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.pesi.out;

import java.sql.SQLException;

import java.util.List;

import java.util.Set;

import org.apache.log4j.Logger;

import org.springframework.stereotype.Component;

import org.springframework.transaction.TransactionStatus;

import eu.etaxonomy.cdm.io.berlinModel.out.mapper.MethodMapper;

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

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

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

import eu.etaxonomy.cdm.model.description.DescriptionElementBase;

import eu.etaxonomy.cdm.model.description.TaxonDescription;

import eu.etaxonomy.cdm.model.description.TextData;

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

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

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

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

/**

 * The export class for additional information linked to {@link eu.etaxonomy.cdm.model.taxon.Taxon Taxa} and {@link eu.etaxonomy.cdm.model.reference.Reference References}.<p>

 * Inserts into DataWarehouse database table <code>AdditionalTaxonSource</code>.

 * @author e.-m.lee

 * @date 23.02.2010

 *

 */

@Component

@SuppressWarnings("unchecked")

public class PesiAdditionalTaxonSourceExport extends PesiExportBase {

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

	private static final Class<? extends CdmBase> standardMethodParameter = Reference.class;

	private static int modCount = 1000;

	private static final String dbTableName = "AdditionalTaxonSource";

	private static final String pluralString = "DescriptionElements";

	private static final String parentPluralString = "Taxa";

	private static boolean sourceUse_AdditionalSource = false;

	private static boolean sourceUse_NomenclaturalReference = false;

	private static boolean sourceUse_SourceOfSynonymy = false;

	private static TaxonNameBase currentTaxonName = null;

	private static String citationMicroReference = null;

	public PesiAdditionalTaxonSourceExport() {

		super();

	}

	/* (non-Javadoc)

	 * @see eu.etaxonomy.cdm.io.common.DbExportBase#getStandardMethodParameter()

	 */

	@Override

	public Class<? extends CdmBase> getStandardMethodParameter() {

		return standardMethodParameter;

	}

	/* (non-Javadoc)

	 * @see eu.etaxonomy.cdm.io.common.CdmIoBase#doCheck(eu.etaxonomy.cdm.io.common.IoStateBase)

	 */

	@Override

	protected boolean doCheck(PesiExportState state) {

		boolean result = true;

		return result;

	}

	/* (non-Javadoc)

	 * @see eu.etaxonomy.cdm.io.common.CdmIoBase#doInvoke(eu.etaxonomy.cdm.io.common.IoStateBase)

	 */

	@Override

	protected void doInvoke(PesiExportState state) {

		try {

			logger.error("*** Started Making " + pluralString + " ...");

			// Get the limit for objects to save within a single transaction.

//			int limit = state.getConfig().getLimitSave();

			int limit = 1000;

			// Stores whether this invoke was successful or not.

			boolean success = true;

			// PESI: Clear the database table Note.

			doDelete(state);

			// CDM: Get the number of all available description elements.

//			int maxCount = getDescriptionService().count(null);

//			logger.error("Total amount of " + maxCount + " " + pluralString + " will be exported.");

			// Get specific mappings: (CDM) DescriptionElement -> (PESI) Note

			PesiExportMapping mapping = getMapping();

			// Initialize the db mapper

			mapping.initialize(state);

			// PESI: Create the Notes

			int count = 0;

			int taxonCount = 0;

			int pastCount = 0;

			TransactionStatus txStatus = null;

			List<TaxonBase> list = null;

			// Start transaction

			txStatus = startTransaction(true);

			logger.error("Started new transaction. Fetching some " + parentPluralString + " first (max: " + limit + ") ...");

			while ((list = getTaxonService().list(null, limit, taxonCount, null, null)).size() > 0) {

				taxonCount += list.size();

				logger.error("Fetched " + list.size() + " " + parentPluralString + ".");

				logger.error("PHASE 2: Check for SourceUse 'Additional Source'");

				sourceUse_AdditionalSource = true;

				for (TaxonBase taxonBase : list) {

					// Set the current Taxon

					currentTaxonName = taxonBase.getName();

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

						Taxon taxon = CdmBase.deproxy(taxonBase, Taxon.class);

						// Determine the TaxonDescriptions

						Set<TaxonDescription> taxonDescriptions = taxon.getDescriptions();

						// Determine the DescriptionElements (Citations) for the current Taxon

						for (TaxonDescription taxonDescription : taxonDescriptions) {

							Set<DescriptionElementBase> descriptionElements = taxonDescription.getElements();

							for (DescriptionElementBase descriptionElement : descriptionElements) {

								// According to FaEu Import those DescriptionElementBase elements are of instance TextData

								// There are no other indicators

								if (descriptionElement.isInstanceOf(TextData.class)) {

									Set<DescriptionElementSource> elementSources = descriptionElement.getSources();

									for (DescriptionElementSource elementSource : elementSources) {

										// Set the CitationMicroReference so it is accessible later in getSourceDetail()

										setCitationMicroReference(elementSource.getCitationMicroReference());

										// Get the citation

										Reference reference = elementSource.getCitation();

										// Check whether it was a synonym originally

										TaxonNameBase nameUsedInSource = elementSource.getNameUsedInSource();

										if (nameUsedInSource != null) {

											// It was a synonym originally: Set currentTaxonName to synonym's taxonName

											currentTaxonName = nameUsedInSource;

										}

										// Citations can be empty (null): Is it wrong data or just a normal case?

										if (reference != null) {

											if (neededValuesNotNull(reference, state)) {

												doCount(count++, modCount, pluralString);

												success &= mapping.invoke(reference);

											}

										}

									}

								}

							}

						}

					}

				}

				sourceUse_AdditionalSource = false;

				logger.error("Exported " + (count - pastCount) + " " + pluralString + ".");

				// Commit transaction

				commitTransaction(txStatus);

				logger.error("Committed transaction.");

				logger.error("Exported " + (count - pastCount) + " " + pluralString + ". Total: " + count);

				pastCount = count;

				// Start transaction

				txStatus = startTransaction(true);

				logger.error("Started new transaction. Fetching some " + parentPluralString + " first (max: " + limit + ") ...");

			}

			if (list.size() == 0) {

				logger.error("No " + pluralString + " left to fetch.");

			}

			// Commit transaction

			commitTransaction(txStatus);

			logger.error("Committed transaction.");

			logger.error("*** Finished Making " + pluralString + " ..." + getSuccessString(success));

			return;

		} catch (SQLException e) {

			e.printStackTrace();

			logger.error(e.getMessage());

			state.setUnsuccessfull();

			return;

		}

	}

	/**

	 * Checks whether needed values for an entity are NULL.

	 * @return

	 */

	private boolean neededValuesNotNull(Reference<?> reference, PesiExportState state) {

		boolean result = true;

		if (getSourceFk(reference, state) == null) {

			logger.error("SourceFk is NULL, but is not allowed to be. Therefore no record was written to export database for this reference: " + reference.getUuid());

			result = false;

		}

		if (getSourceUseFk(reference) == null) {

			logger.error("SourceUseFk is NULL, but is not allowed to be. Therefore no record was written to export database for this reference: " + reference.getUuid());

			result = false;

		}

		return result;

	}

	/**

	 * Deletes all entries of database tables related to <code>AdditionalTaxonSource</code>.

	 * @param state The {@link PesiExportState PesiExportState}.

	 * @return Whether the delete operation was successful or not.

	 */

	protected boolean doDelete(PesiExportState state) {

		PesiExportConfigurator pesiConfig = (PesiExportConfigurator) state.getConfig();

		String sql;

		Source destination =  pesiConfig.getDestination();

		// Clear AdditionalTaxonSource

		sql = "DELETE FROM " + dbTableName;

		destination.setQuery(sql);

		destination.update(sql);

		return true;

	}

	/* (non-Javadoc)

	 * @see eu.etaxonomy.cdm.io.common.CdmIoBase#isIgnore(eu.etaxonomy.cdm.io.common.IoStateBase)

	 */

	@Override

	protected boolean isIgnore(PesiExportState state) {

		// TODO

//		return state.getConfig().isDoAdditionalTaxonSource()

		return false;

	}

	/**

	 * Returns the <code>TaxonFk</code> attribute.

	 * @param reference The {@link Reference Reference}.

	 * @see MethodMapper

	 */

	@SuppressWarnings("unused")

	private static Integer getTaxonFk(Reference<?> reference, PesiExportState state) {

		// Reference parameter isn't needed, but the DbSingleAttributeExportMapperBase throws a type mismatch exception otherwise

		// since it awaits two parameters if one of them is of instance DbExportStateBase.

		Integer result = null;

		if (state != null && currentTaxonName != null) {

			result = state.getDbId(currentTaxonName);

		}

		return result;

	}

	/**

	 * Returns the <code>SourceFk</code> attribute.

	 * @param reference The {@link Reference Reference}.

	 * @return The <code>SourceFk</code> attribute.

	 * @see MethodMapper

	 */

	private static Integer getSourceFk(Reference<?> reference, PesiExportState state) {

		Integer result = null;

		if (state != null && reference != null) {

			result = state.getDbId(reference);

		}

		return result;

	}

	/**

	 * Returns the <code>SourceUseFk</code> attribute.

	 * @param reference The {@link Reference Reference}.

	 * @return The <code>SourceUseFk</code> attribute.

	 * @see MethodMapper

	 */

	private static Integer getSourceUseFk(Reference<?> reference) {

		// TODO

		Integer result = null;

		if (sourceUse_AdditionalSource) {

			result = PesiTransformer.sourceUseIdSourceUseId(3);

		} else if (sourceUse_SourceOfSynonymy) {

			result = PesiTransformer.sourceUseIdSourceUseId(4);

		} else if (sourceUse_NomenclaturalReference) {

			result = PesiTransformer.sourceUseIdSourceUseId(8);

		}

		return result;

	}

	/**

	 * Returns the <code>SourceUseCache</code> attribute.

	 * @param reference The {@link Reference Reference}.

	 * @return The <code>SourceUseCache</code> attribute.

	 * @see MethodMapper

	 */

	@SuppressWarnings("unused")

	private static String getSourceUseCache(Reference<?> reference) {

		// TODO

		String result = null;

		if (sourceUse_AdditionalSource) {

			result = PesiTransformer.sourceUseId2SourceUseCache(3);

		} else if (sourceUse_SourceOfSynonymy) {

			result = PesiTransformer.sourceUseId2SourceUseCache(4);

		} else if (sourceUse_NomenclaturalReference) {

			result = PesiTransformer.sourceUseId2SourceUseCache(8);

		}

		return result;

	}

	/**

	 * Returns the <code>SourceNameCache</code> attribute.

	 * @param reference The {@link Reference Reference}.

	 * @return The <code>SourceNameCache</code> attribute.

	 * @see MethodMapper

	 */

	@SuppressWarnings("unused")

	private static String getSourceNameCache(Reference<?> reference) {

		String result = null;

		if (reference != null) {

			result = reference.getTitle();

		}

		return result;

	}

	/**

	 * Returns the <code>SourceDetail</code> attribute.

	 * @param reference The {@link Reference Reference}.

	 * @return The <code>SourceDetail</code> attribute.

	 * @see MethodMapper

	 */

	@SuppressWarnings("unused")

	private static String getSourceDetail(Reference<?> reference) {

		return PesiAdditionalTaxonSourceExport.citationMicroReference;

	}

	/**

	 * @param citationMicroReference the citationMicroReference to set

	 */

	public static void setCitationMicroReference(String citationMicroReference) {

		PesiAdditionalTaxonSourceExport.citationMicroReference = citationMicroReference;

	}

	/**

	 * Returns the CDM to PESI specific export mappings.

	 * @return The {@link PesiExportMapping PesiExportMapping}.

	 */

	private PesiExportMapping getMapping() {

		PesiExportMapping mapping = new PesiExportMapping(dbTableName);

		mapping.addMapper(MethodMapper.NewInstance("TaxonFk", this.getClass(), "getTaxonFk", standardMethodParameter, PesiExportState.class));

		mapping.addMapper(MethodMapper.NewInstance("SourceFk", this.getClass(), "getSourceFk", standardMethodParameter, PesiExportState.class));

		mapping.addMapper(MethodMapper.NewInstance("SourceUseFk", this));

		mapping.addMapper(MethodMapper.NewInstance("SourceUseCache", this));

		mapping.addMapper(MethodMapper.NewInstance("SourceNameCache", this));

		mapping.addMapper(MethodMapper.NewInstance("SourceDetail", this));

		return mapping;

	}

}