/*
* Created on 19-Apr-2004
*/
package ca.uhn.hl7v2.protocol.impl;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import ca.uhn.hl7v2.HL7Exception;
import ca.uhn.hl7v2.model.Message;
import ca.uhn.hl7v2.util.Terser;
/**
* A utility for getting a list of fields from a <code>Message</code>,
* e.g. for inclusion in a <code>Transportable</code>.
*
* @author <a href="mailto:bryan.tripp@uhn.on.ca">Bryan Tripp</a>
* @version $Revision: 1.1 $ updated on $Date: 2007-02-19 02:24:26 $ by $Author: jamesagnew $
*/
public class MetadataExtractor {
/**
* @param theMessage a message from which to extract fields
* @param theTerserPaths a list of paths to desired fields, in the
* form required by <code>Terser</code>.
* @return a Map from Terser paths to field values
*/
public static Map getFields(Message theMessage, List theTerserPaths) throws HL7Exception {
Map fields = new HashMap();
Terser terser = new Terser(theMessage);
for (int i = 0; i < theTerserPaths.size(); i++) {
String path = (String) theTerserPaths.get(i);
String fieldValue = terser.get(path);
fields.put(path, fieldValue);
}
return fields;
}
}