Java tutorial
/* * #%L * ACS AEM Commons Bundle * %% * Copyright (C) 2013 Adobe * %% * 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. * #L% */ package com.adobe.acs.commons.quickly.operations.impl; import com.adobe.acs.commons.quickly.Command; import com.adobe.acs.commons.quickly.operations.AbstractOperation; import com.adobe.acs.commons.quickly.operations.Operation; import com.adobe.acs.commons.quickly.results.Result; import com.adobe.acs.commons.quickly.results.impl.serializers.OpenResultSerializerImpl; import com.adobe.acs.commons.util.TextUtil; import com.day.cq.search.PredicateGroup; import com.day.cq.search.Query; import com.day.cq.search.QueryBuilder; import com.day.cq.search.result.Hit; import com.day.cq.search.result.SearchResult; import com.day.cq.wcm.api.NameConstants; import com.day.cq.wcm.api.Page; import com.day.cq.wcm.api.PageManager; import org.apache.commons.lang.StringUtils; import org.apache.commons.lang.time.FastDateFormat; 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.Reference; import org.apache.felix.scr.annotations.Service; import org.apache.sling.api.SlingHttpServletRequest; import org.apache.sling.api.SlingHttpServletResponse; import org.apache.sling.api.resource.Resource; import org.apache.sling.api.resource.ResourceResolver; import org.apache.sling.commons.json.JSONException; import org.apache.sling.commons.json.JSONObject; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import javax.jcr.RepositoryException; import javax.jcr.Session; import java.text.Format; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; /** * ACS AEM Commons - Quickly - Last Modified Operation */ @Component @Properties({ @Property(name = Operation.PROP_CMD, value = LastModifiedOperationImpl.CMD) }) @Service public class LastModifiedOperationImpl extends AbstractOperation { private static final Logger log = LoggerFactory.getLogger(LastModifiedOperationImpl.class); public static final String CMD = "lastmod"; private static final Format DATE_FORMAT = FastDateFormat.getInstance("EEE, d MMM yyyy @ hh:mm aaa"); private static final int MAX_QUERY_RESULTS = 25; @Reference private QueryBuilder queryBuilder; @Override public boolean accepts(final SlingHttpServletRequest request, final Command cmd) { return StringUtils.equalsIgnoreCase(CMD, cmd.getOp()); } @Override public String getCmd() { return CMD; } @Override protected List<Result> withoutParams(final SlingHttpServletRequest request, final SlingHttpServletResponse response, final Command cmd) { final List<Result> results = new ArrayList<Result>(); final Result infoResult = new Result.Builder("lastmod [ userId ] [ 1s | 2m | 3h | 4d | 5w | 6M | 7y ]") .description("Returns the last modified Pages. Defaults to: me 1d").build(); results.add(infoResult); // Default to "lastmod me 1d" results.addAll(this.withParams(request, response, cmd)); return results; } @Override protected List<Result> withParams(final SlingHttpServletRequest request, final SlingHttpServletResponse response, final Command cmd) { final long start = System.currentTimeMillis(); final List<Result> results = new ArrayList<Result>(); final ResourceResolver resourceResolver = request.getResourceResolver(); final PageManager pageManager = resourceResolver.adaptTo(PageManager.class); final List<Resource> pages = this.getLastModifiedPages(resourceResolver, cmd); log.debug("LastModified pages -- [ {} ] results", pages.size()); for (final Resource resource : pages) { final Page page = pageManager.getContainingPage(resource); if (page == null) { continue; } final String title = TextUtil.getFirstNonEmpty(page.getTitle(), page.getPageTitle(), page.getNavigationTitle(), page.getName()); final String description = page.getPath() + " by " + page.getLastModifiedBy() + " at " + DATE_FORMAT.format(page.getLastModified().getTime()); results.add(new Result.Builder(title).path(page.getPath()).description(description) .resultType(OpenResultSerializerImpl.TYPE).build()); } log.debug("Lastmod - Execution time: {} ms", System.currentTimeMillis() - start); return results; } private List<Resource> getLastModifiedPages(final ResourceResolver resourceResolver, final Command cmd) { final String relativeDateRange = this.getRelativeDateRangeLowerBoundParam(cmd); final String userId = this.getUserIdParam(cmd, resourceResolver.getUserID()); return this.getLastModifiedQuery(resourceResolver, userId, relativeDateRange, "cq:PageContent", "@" + NameConstants.PN_PAGE_LAST_MOD, MAX_QUERY_RESULTS); } private List<Resource> getLastModifiedQuery(final ResourceResolver resourceResolver, final String userId, final String relativeDateRange, final String nodeType, final String dateProperty, final int limit) { final List<Resource> resources = new ArrayList<Resource>(); final Map<String, String> map = new HashMap<String, String>(); map.put("path", "/content"); map.put("type", nodeType); map.put("1_property", NameConstants.PN_PAGE_LAST_MOD_BY); map.put("1_property.value", userId); map.put("relativedaterange.property", dateProperty); map.put("relativedaterange.lowerBound", relativeDateRange); map.put("orderby", dateProperty); map.put("orderby.sort", "desc"); map.put("p.limit", String.valueOf(limit)); map.put("p.guessTotal", "true"); try { log.debug("Lastmod QueryBuilder Map: {}", new JSONObject(map).toString(2)); } catch (JSONException e) { // no-op } final Query query = queryBuilder.createQuery(PredicateGroup.create(map), resourceResolver.adaptTo(Session.class)); final SearchResult result = query.getResult(); for (final Hit hit : result.getHits()) { try { resources.add(hit.getResource()); } catch (RepositoryException e) { log.error("Error resolving Hit to Resource [ {} ]. " + "Likely issue with lucene index being out of sync.", hit.toString()); } } return resources; } private String getRelativeDateRangeLowerBoundParam(final Command cmd) { final String defaultParam = "-1d"; final String[] params = cmd.getParams(); if (params.length > 0) { String param = params[0]; if (params.length > 1) { param = params[1]; } if (StringUtils.isNotBlank(param) && param.matches("\\d+[s|m|h|d|w|M|y]{1}")) { return "-" + param; } } return defaultParam; } private String getUserIdParam(final Command cmd, String currentUserId) { final String[] params = cmd.getParams(); if (params.length > 0) { String param = params[0]; if (StringUtils.isNotBlank(param) && !StringUtils.equalsIgnoreCase(param, "me") && !param.matches("\\d+[s|m|h|d|w|M|y]{1}")) { return param; } } return currentUserId; } }