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.ArrayList;

import java.util.HashSet;

import java.util.List;

import java.util.Set;

import org.apache.commons.lang3.StringUtils;

import org.apache.logging.log4j.LogManager;import org.apache.logging.log4j.Logger;

/**

 * @author a.mueller

 * @since 12.05.2009

 */

public abstract class MultipleAttributeMapperBase<SINGLE_MAPPER extends CdmSingleAttributeMapperBase> extends CdmAttributeMapperBase {

	@SuppressWarnings("unused")

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

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

	protected List<SINGLE_MAPPER> singleMappers = new ArrayList<>();

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

	public MultipleAttributeMapperBase() {

		singleMappers = new ArrayList<SINGLE_MAPPER>();

	}

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

	@Override

	public List<String> getDestinationAttributeList() {

		List<String> result = new ArrayList<>();

		for (SINGLE_MAPPER singleMapper : singleMappers){

			result.addAll(singleMapper.getDestinationAttributeList());

		}

		return result;

	}

	@Override

	public Set<String> getDestinationAttributes() {

		Set<String> result = new HashSet<>();

		result.addAll(getDestinationAttributeList());

		return result;

	}

	@Override

	public List<String> getSourceAttributeList() {

		List<String> result = new ArrayList<>();

		for (SINGLE_MAPPER singleMapper : singleMappers){

			result.addAll(singleMapper.getSourceAttributeList());

		}

		return result;

	}

	@Override

	public Set<String> getSourceAttributes() {

		Set<String> result = new HashSet<>();

		result.addAll(getSourceAttributeList());

		return result;

	}

    /**

	 * Returns the value of a result set attribute in its String representation.

	 * Better move this to a subclass for DbImportMappers (does not exist yet)

	 */

	protected String getStringDbValue(ResultSet rs, String attribute) throws SQLException {

		if (StringUtils.isBlank(attribute)){

			return null;

		}

		Object oId = rs.getObject(attribute);

		if (oId == null){

			return null;

		}

		String id = String.valueOf(oId);

		return id;

	}

}