queryutils.java

一个工作流设计及定义的系统,可以直接与数据库结合进行系统工作流程的定义及应用.

/*
 * Copyright (c) 2005, John Mettraux, OpenWFE.org
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 * . Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.  
 * 
 * . Redistributions in binary form must reproduce the above copyright notice, 
 *   this list of conditions and the following disclaimer in the documentation 
 *   and/or other materials provided with the distribution.
 * 
 * . Neither the name of the "OpenWFE" nor the names of its contributors may be
 *   used to endorse or promote products derived from this software without
 *   specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * $Id: QueryUtils.java,v 1.4 2005/07/18 09:47:51 jmettraux Exp $
 */

//
// QueryUtils.java
//
// [e-mail]
//
// generated with 
// jtmpl 1.1.00 16.08.2003 John Mettraux ([e-mail])
//

package openwfe.org.worklist.impl.query;

import openwfe.org.ApplicationContext;
import openwfe.org.xml.XmlUtils;
import openwfe.org.query.QueryMap;
import openwfe.org.query.QueryException;
import openwfe.org.query.sets.SetUtils;
import openwfe.org.query.item.QueryItem;
//import openwfe.org.xdbc.Session;
//import openwfe.org.xdbc.XdbcException;
//import openwfe.org.xdbc.nquery.IdSet;
import openwfe.org.worklist.Definitions;
import openwfe.org.worklist.store.StoreException;


/**
 * Methods for FileQueryStore and other query stores
 *
 * <p><font size=2>CVS Info :
 * <br>$Author: jmettraux $
 * <br>$Id: QueryUtils.java,v 1.4 2005/07/18 09:47:51 jmettraux Exp $ </font>
 *
 * @author [e-mail]
 */
public abstract class QueryUtils
{

    private final static org.apache.log4j.Logger log = org.apache.log4j.Logger
        .getLogger(QueryUtils.class.getName());

    /**
     * This is a method for FileQueryStore : it returns true if the document
     * matches at least of on the queries the user has on the store.
     */
    public static boolean matches
        (final ApplicationContext context,
         final java.net.URL queryMapUrl,
         final String storename,
         final String username,
         final org.jdom.Element workitem)
    throws
        StoreException
    {
        log.debug("matches() user:"+username+" store:"+storename);

        try
        {
            final QueryItem qi = lookupQuery
                (context, queryMapUrl, storename, username);

            return qi.validate(workitem);
        }
        catch (final QueryException qe)
        {
            throw new StoreException
                ("validation failed", qe);
        }
    }

    private static QueryItem lookupQuery 
        (final ApplicationContext context, 
         final java.net.URL queryMapUrl,
         final String storename,
         final String username)
    throws
        QueryException
    {
        final String queryUrl = 
            queryMapUrl + "#" + storename + "#" + username;

        return Definitions.getQueryMap(context).lookupQuery(queryUrl);
    }

    /* *
     * Returns a list of document ids (Long instances)
     * /
    public static java.util.List query
        (final ApplicationContext context,
         final String clientIdLike,
         final Session xdbcSession,
         final java.net.URL queryMapUrl,
         final String storename,
         final String username)
    throws
        StoreException
    {
        try
        {
            final QueryItem qi = lookupQuery
                (context, queryMapUrl, storename, username);

            final IdSet results = xdbcSession.query(qi);

            return new java.util.ArrayList(results);
        }
        catch (final Exception e)
        {
            throw new StoreException("query failed", e);
        }
    }
     */

}