D-Net

/**

 *

 */

package eu.dnetlib.data.collective.transformation.engine.functions;

import java.io.StringReader;

import javax.xml.xpath.XPath;

import javax.xml.xpath.XPathConstants;

import javax.xml.xpath.XPathExpressionException;

import javax.xml.xpath.XPathFactory;

import org.w3c.dom.Node;

import org.xml.sax.InputSource;

import eu.dnetlib.data.collective.transformation.IDatabaseConnector;

import eu.dnetlib.data.collective.transformation.TransformationException;

/**

 * @author jochen

 *

 */

public class Dblookup extends AbstractTransformationFunction {

	public static final String paramSqlExpr = "sqlExpr";

	private IDatabaseConnector dbConnector;

	/**

	 *

	 */

	public Dblookup() {

		// TODO Auto-generated constructor stub

	}

	/* (non-Javadoc)

	 * @see eu.dnetlib.data.collective.transformation.engine.functions.AbstractTransformationFunction#execute()

	 */

	@Override

	String execute() throws ProcessingException {

		// TODO Auto-generated method stub

		return null;

	}

	/**

	 * @return the dbConnector

	 */

	public IDatabaseConnector getDbConnector() {

		return dbConnector;

	}

	/**

	 * @param dbConnector the dbConnector to set

	 */

	public void setDbConnector(IDatabaseConnector dbConnector) {

		this.dbConnector = dbConnector;

	}

	public LookupRecord getResults(String aSqlExpression) throws TransformationException, XPathExpressionException {

		LookupRecord lookupRecord = new LookupRecord();

		XPath xpath = XPathFactory.newInstance().newXPath();

		for (String record: dbConnector.getResult(aSqlExpression)){

			InputSource inSource = new InputSource(new StringReader(record));

			Node root = (Node)xpath.evaluate("/", inSource, XPathConstants.NODE);

			lookupRecord.setRecord(xpath.evaluate("//FIELD[@name='accessinfopackage']/text()", root),

					"officialname",	xpath.evaluate("//FIELD[@name='officialname']/text()", root));

			lookupRecord.setRecord(xpath.evaluate("//FIELD[@name='accessinfopackage']/text()", root),

					"id",	xpath.evaluate("//FIELD[@name='id']/text()", root));

		}

		return lookupRecord;

	}

}