Metacat

        // Get the query from the QueryGroup and check

        // if no query has been returned

        String queryFromQueryGroup = query.printSQL(useXMLIndex);

        if(!queryFromQueryGroup.trim().equals("")){

            self.append(" docid IN (");

            self.append(queryFromQueryGroup);

import java.util.Vector;

import java.util.Enumeration;

 /** a utility class that represents a group of terms in a query */

public  class QueryGroup {

    private String operator = null;  // indicates how query terms are combined

    private Vector children = null;  // the list of query terms and groups

    private int countPercentageSearchItem = 0;

    /**

     * construct a new QueryGroup

     *

      StringBuffer queryString = new StringBuffer();

      boolean first = true;

      Enumeration en= getChildren();

      while (en.hasMoreElements()) {

        Object qobject = en.nextElement();

        if (qobject instanceof QueryGroup) {

            QueryGroup qg = (QueryGroup)qobject;

        	String queryGroupSQL = qg.printSQL(useXMLIndex);

        	if (first) {

        		first = false;

        	} else {

        		if(!queryString.toString().equals("") && queryGroupSQL != null &&!queryGroupSQL.equals("")){

                    queryString.append(" " + operator + " ");

        } else if (qobject instanceof QueryTerm) {

           QueryTerm qt = (QueryTerm)qobject;

           String termQueryString = qt.printSQL(useXMLIndex);

           if(!(qt.getSearchMode().equals("contains") && qt.getValue().equals("%"))){

        	   if (first) {

                   first = false;

          self.append(queryString.toString());

          self.append(")");

      }

      return self.toString();

    }