package at.gv.egovernment.moa.spss.api.common;

import java.util.Map;

/**
 * A class containing data for selecting single elements using an XPath 
 * expression.
 * 
 * Derived classes are used to point to the <code>CreateSignatureLocation</code>
 * and the <code>VerifySignatureLocation</code>.
 * 
 * @author Patrick Peck
 * @version $Id$
 */
public interface ElementSelector {
  /**
   * Gets the XPath expression pointing to a single element.
   * 
   * @return The XPath expression to select the signature parent element.
   */
  public String getXPathExpression();
  /**
   * Gets the namespace prefix to URI mapping to use when evaluating the XPath.
   * 
   * @return The namespace prefix to URI mapping.
   */
  public Map getNamespaceDeclarations();
}