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.out;

import java.sql.Types;

import org.apache.logging.log4j.LogManager;

import org.apache.logging.log4j.Logger;

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

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

/**

 * @author a.mueller

 * @since 28.09.2019

 */

public class DbFixedStringMapper

        extends DbSingleAttributeExportMapperBase<DbExportStateBase<?, IExportTransformer>>

        implements IDbExportMapper<DbExportStateBase<?,IExportTransformer>, IExportTransformer> {

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

	private static final int MAX_PRECISION = -1;  //precision for datatype nvarchar(max) == clob (SQL Server 2008)

	private String fixString;

	public static DbFixedStringMapper NewInstance(String fixString, String dbAttributeString){

		return new DbFixedStringMapper(fixString, dbAttributeString);

	}

	private DbFixedStringMapper(String fixString, String dbAttributeString) {

		super(null, dbAttributeString, fixString, true, false);

		this.fixString = fixString;

	}

	@Override

	protected Object getValue(CdmBase cdmBase) {

		String result = fixString;

    	//truncate if needed

    	if (result != null && result.length() > getPrecision() && getPrecision() != MAX_PRECISION && getPrecision() > 0){

    		logger.warn("Truncation (" + result.length() + "->" + getPrecision() + ") needed for Attribute " + getDestinationAttribute() + " in " +  cdmBase + "." );

    		result = result.substring(0, getPrecision());

    	}

		return result;

	}

	@Override

	protected int getSqlType() {

		return Types.VARCHAR;

	}

	@Override

	public Class<?> getTypeClass() {

		return String.class;

	}

}