Java tutorial
/* * Copyright 2012 david gonzalez. * * 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 com.activecq.samples.contentfinder.impl.viewhandler; import com.day.cq.search.PredicateGroup; import com.day.cq.search.Query; import com.day.cq.search.QueryBuilder; import com.day.cq.wcm.core.contentfinder.ViewHandler; import com.day.cq.wcm.core.contentfinder.ViewQuery; import org.apache.commons.lang.ArrayUtils; import org.apache.commons.lang.StringUtils; import org.apache.felix.scr.annotations.Component; import org.apache.felix.scr.annotations.Properties; import org.apache.felix.scr.annotations.Property; import org.apache.felix.scr.annotations.Service; import org.apache.sling.api.SlingHttpServletRequest; import org.apache.sling.api.resource.ResourceResolver; import org.osgi.framework.Constants; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import javax.jcr.Session; import java.util.LinkedHashMap; import java.util.Map; import java.util.Set; /** * User: david */ @Component(label = "Samples - GQL to Querybuilder View Handler", description = "Leverage Querybuilder to run ContentFinder queries", metatype = false, immediate = true) @Properties({ @Property(label = "Servlet Paths", name = "sling.servlet.paths", value = "/bin/wcm/contentfinder/qb/view", propertyPrivate = true), @Property(label = "Vendor", name = Constants.SERVICE_VENDOR, value = "ActiveCQ", propertyPrivate = true) }) @Service public class QueryBuilderViewHandler extends ViewHandler { private static final Logger log = LoggerFactory.getLogger(QueryBuilderViewHandler.class); @Override protected ViewQuery createQuery(SlingHttpServletRequest slingRequest, Session session, String queryString) throws Exception { final ResourceResolver resolver = slingRequest.getResourceResolver(); final QueryBuilder qb = resolver.adaptTo(QueryBuilder.class); Map<String, String> map; if (GQLToQueryBuilderConverter.convertToQueryBuilder(slingRequest)) { map = this.convertToQueryBuilderParams(slingRequest, queryString); log.debug("Forced QueryBuilder Parameter Map: {}", map); } else { map = this.getQueryBuilderParams(slingRequest, queryString); log.debug("Converted QueryBuilder Parameter Map: {}", map); } final Query query = qb.createQuery(PredicateGroup.create(map), session); return new QueryBuilderViewQuery(query); } /** * Assume query should be treated as a QueryBuilder query, rather than a GQL query * <p/> * This intelligently converts default Fulltext and Limit parameters to QueryBuilder equivalents * * @param request * @param queryString * @return */ private Map<String, String> getQueryBuilderParams(final SlingHttpServletRequest request, final String queryString) { Map<String, String> map = new LinkedHashMap<String, String>(); for (final String key : (Set<String>) request.getParameterMap().keySet()) { // Skip known content finder parameters that are unused for QueryBuilder if (!ArrayUtils.contains(ContentFinderConstants.QUERYBUILDER_BLACKLIST, key)) { map.put(key, request.getParameter(key)); } else { log.debug("Rejecting property [ {} ] due to blacklist match", key); } } map = GQLToQueryBuilderConverter.addFulltext(request, map, queryString); map = GQLToQueryBuilderConverter.addLimitAndOffset(request, map); return map; } private Map<String, String> convertToQueryBuilderParams(final SlingHttpServletRequest request, final String queryString) { Map<String, String> map = new LinkedHashMap<String, String>(); int userDefinedPropertyCount = 0; for (final String key : request.getRequestParameterMap().keySet()) { if (StringUtils.equals(key, ContentFinderConstants.CF_PATH)) { log.debug("Converting path..."); map = GQLToQueryBuilderConverter.addPath(request, map); } else if (StringUtils.equals(key, ContentFinderConstants.CF_TYPE)) { log.debug("Converting type..."); map = GQLToQueryBuilderConverter.addType(request, map); } else if (StringUtils.equals(key, ContentFinderConstants.CF_NAME)) { log.debug("Converting name..."); map = GQLToQueryBuilderConverter.addName(request, map); } else if (StringUtils.equals(key, ContentFinderConstants.CF_TAGS)) { log.debug("Converting tags..."); map = GQLToQueryBuilderConverter.addTags(request, map); } else if (StringUtils.equals(key, ContentFinderConstants.CF_MIMETYPE)) { log.debug("Converting mimeType..."); map = GQLToQueryBuilderConverter.addMimeType(request, map); } else if (StringUtils.equals(key, ContentFinderConstants.CF_FULLTEXT)) { log.debug("Converting fulltext..."); map = GQLToQueryBuilderConverter.addFulltext(request, map, queryString); } else if (StringUtils.equals(key, ContentFinderConstants.CF_ORDER)) { log.debug("Converting order..."); map = GQLToQueryBuilderConverter.addOrder(request, map, queryString); } else if (StringUtils.equals(key, ContentFinderConstants.CF_LIMIT)) { log.debug("Converting limit..."); map = GQLToQueryBuilderConverter.addLimitAndOffset(request, map); } else { // User Defined Properties log.debug("Converting property [ {} ]...", key); map = GQLToQueryBuilderConverter.addProperty(request, map, key, userDefinedPropertyCount); userDefinedPropertyCount++; } } /** * AND all groups together */ map.put("p.or", "false"); return map; } }