| /* |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, |
| software distributed under the License is distributed on an |
| "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| KIND, either express or implied. See the License for the |
| specific language governing permissions and limitations |
| under the License. |
| */ |
| package org.apache.wiki.tags; |
| |
| import org.apache.log4j.Logger; |
| import org.apache.wiki.WikiContext; |
| import org.apache.wiki.api.core.Command; |
| import org.apache.wiki.api.core.Context; |
| import org.apache.wiki.api.core.Engine; |
| import org.apache.wiki.api.search.SearchResult; |
| import org.apache.wiki.ui.PageCommand; |
| |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.jsp.JspWriter; |
| import javax.servlet.jsp.PageContext; |
| import java.io.IOException; |
| import java.util.Collection; |
| |
| /** |
| * Iterates through Search result results. |
| * |
| * <P><B>Attributes</B></P> |
| * <UL> |
| * <LI>max = how many search results should be shown. |
| * </UL> |
| * |
| * @since 2.0 |
| */ |
| // FIXME: Shares MUCH too much in common with IteratorTag. Must refactor. |
| public class SearchResultIteratorTag extends IteratorTag { |
| |
| private static final long serialVersionUID = 0L; |
| |
| private int m_maxItems; |
| private int m_count = 0; |
| private int m_start = 0; |
| |
| private static final Logger log = Logger.getLogger(SearchResultIteratorTag.class); |
| |
| @Override |
| public void release() { |
| super.release(); |
| m_maxItems = m_count = 0; |
| } |
| |
| public void setMaxItems( final int arg ) |
| { |
| m_maxItems = arg; |
| } |
| |
| public void setStart( final int arg ) |
| { |
| m_start = arg; |
| } |
| |
| @Override |
| public final int doStartTag() { |
| // Do lazy eval if the search results have not been set. |
| if( m_iterator == null ) { |
| final Collection< ? > searchresults = (Collection< ? >)pageContext.getAttribute( "searchresults", PageContext.REQUEST_SCOPE ); |
| setList( searchresults ); |
| |
| int skip = 0; |
| |
| // Skip the first few ones... |
| m_iterator = searchresults.iterator(); |
| while( m_iterator.hasNext() && (skip++ < m_start) ) { |
| m_iterator.next(); |
| } |
| } |
| |
| m_count = 0; |
| m_wikiContext = ( WikiContext )pageContext.getAttribute( WikiContext.ATTR_CONTEXT, PageContext.REQUEST_SCOPE ); |
| |
| return nextResult(); |
| } |
| |
| private int nextResult() { |
| if( m_iterator != null && m_iterator.hasNext() && m_count++ < m_maxItems ) { |
| final SearchResult r = ( SearchResult )m_iterator.next(); |
| |
| // Create a wiki context for the result |
| final Engine engine = m_wikiContext.getEngine(); |
| final HttpServletRequest request = m_wikiContext.getHttpRequest(); |
| final Command command = PageCommand.VIEW.targetedCommand( r.getPage() ); |
| final Context context = new WikiContext( engine, request, command ); |
| |
| // Stash it in the page context |
| pageContext.setAttribute( Context.ATTR_CONTEXT, context, PageContext.REQUEST_SCOPE ); |
| pageContext.setAttribute( getId(), r ); |
| |
| return EVAL_BODY_BUFFERED; |
| } |
| |
| return SKIP_BODY; |
| } |
| |
| @Override |
| public int doAfterBody() { |
| if( bodyContent != null ) { |
| try { |
| final JspWriter out = getPreviousOut(); |
| out.print(bodyContent.getString()); |
| bodyContent.clearBody(); |
| } catch( final IOException e ) { |
| log.error("Unable to get inner tag text", e); |
| // FIXME: throw something? |
| } |
| } |
| |
| return nextResult(); |
| } |
| |
| @Override |
| public int doEndTag() { |
| m_iterator = null; |
| return super.doEndTag(); |
| } |
| |
| } |