AdvancedSearchFormController.java

/**
 * Copyright 2008 The University of North Carolina at Chapel Hill
 *
 * Licensed 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 edu.unc.lib.dl.ui.controller;

import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import edu.unc.lib.dl.acl.util.AccessGroupSet;
import edu.unc.lib.dl.acl.util.GroupsThreadStore;
import edu.unc.lib.dl.search.solr.model.SearchState;
import edu.unc.lib.dl.search.solr.model.SearchResultResponse;
import edu.unc.lib.dl.ui.util.LookupMappingsSettings;
import edu.unc.lib.dl.search.solr.util.SearchStateUtil;

/**
 * Handles requests to the advanced search page, sending users to the form if there are no
 * query string parameters set, or constructing a search state and sending the user to 
 * get results if they have populated the form.
 * @author bbpennel
 */
@Controller
@RequestMapping("/advancedSearch")
public class AdvancedSearchFormController extends AbstractSolrSearchController {
	
	@RequestMapping(method = RequestMethod.GET)
	public String handleRequest(Model model, HttpServletRequest request){
		//If the user is coming to this servlet without any parameters set then send them to form.
		if (request.getQueryString() == null || request.getQueryString().length() == 0){
			//Populate the list of collections for the advanced search page drop down
			AccessGroupSet accessGroups = GroupsThreadStore.getGroups();
			
			SearchResultResponse collectionResultResponse = queryLayer.getCollectionList(accessGroups);
			model.addAttribute("collectionList", collectionResultResponse.getResultList());
			
			SearchResultResponse departmentFieldObject = queryLayer.getDepartmentList(accessGroups, null);
			model.addAttribute("departmentList", departmentFieldObject.getFacetFields().get(0));
			
			model.addAttribute("pageSubtitle", "Advanced Search");
			
			model.addAttribute("formatMap", LookupMappingsSettings.getMapping("advancedFormats"));
			return "advancedSearch";
		}
		
		//If the user has submitted the search form, then generate a search state and forward them to the search servlet.
		SearchState searchState = searchStateFactory.createSearchStateAdvancedSearch(request.getParameterMap());
		String container = request.getParameter("container");
		
		request.getSession().setAttribute("searchState", searchState);
		
		model.addAllAttributes(SearchStateUtil.generateStateParameters(searchState));

		return "redirect:/search" + ((container != null && container.length() > 0)? '/' + container : "");
	}
}