001    /* 
002        Licensed to the Apache Software Foundation (ASF) under one
003        or more contributor license agreements.  See the NOTICE file
004        distributed with this work for additional information
005        regarding copyright ownership.  The ASF licenses this file
006        to you under the Apache License, Version 2.0 (the
007        "License"); you may not use this file except in compliance
008        with the License.  You may obtain a copy of the License at
009    
010           http://www.apache.org/licenses/LICENSE-2.0
011    
012        Unless required by applicable law or agreed to in writing,
013        software distributed under the License is distributed on an
014        "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015        KIND, either express or implied.  See the License for the
016        specific language governing permissions and limitations
017        under the License.  
018     */
019    package org.apache.wiki.tags;
020    
021    import java.io.IOException;
022    import java.util.Collection;
023    import javax.servlet.jsp.PageContext;
024    
025    /**
026     *  Outputs the size of the search results list, if it contains any items.
027     *  Otherwise outputs an empty string.
028     *
029     *  @since 2.0
030     */
031    public class SearchResultsSizeTag
032        extends WikiTagBase
033    {
034        private static final long serialVersionUID = 0L;
035        
036        public final int doWikiStartTag()
037            throws IOException
038        {
039            Collection list = (Collection)pageContext.getAttribute( "searchresults",
040                                                                    PageContext.REQUEST_SCOPE );
041            if( list != null )
042            {
043                pageContext.getOut().print( list.size() );
044            }
045    
046            return SKIP_BODY;
047        }
048    }