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

import java.util.Map;

/**
 * A <code>Transform</code> performing an XPath selection.
 * 
 * @author Patrick Peck
 * @version $Id$
 */
public interface XPathTransform extends Transform {
  /** Algorithm URI of the XPath <code>Transform</code>. */
  public static final String XPATH =
    "http://www.w3.org/TR/1999/REC-xpath-19991116";

  /**
   * Gets the XPath expression used for selection.
   * 
   * @return The XPath expression used for selection.
   */
  public String getXPathExpression();
  /**
   * Gets The namespace prefix to URI mapping used during evaluation of the
   * XPath expression.
   * 
   * @return The namespace prefix to URI mapping.
   */
  public Map getNamespaceDeclarations();
  
}