Java tutorial
/* * Reconciliation and Matching Framework * Copyright 2014 Royal Botanic Gardens, Kew * * This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by * the Free Software Foundation, either version 3 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.kew.rmf.matchconf.web; import java.io.UnsupportedEncodingException; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.validation.Valid; import org.kew.rmf.matchconf.Configuration; import org.kew.rmf.matchconf.Reporter; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.validation.BindingResult; import org.springframework.validation.ObjectError; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.util.UriUtils; import org.springframework.web.util.WebUtils; @Controller public class CustomReporterController { @RequestMapping(value = "/{configType}_configs/{configName}/reporters", params = "form", produces = "text/html") public String createForm(@PathVariable("configType") String configType, @PathVariable("configName") String configName, Model uiModel, @RequestParam(value = "className", required = false) String className, @RequestParam(value = "packageName", required = false) String packageName) { Reporter instance = new Reporter(); instance.setPackageName(packageName); instance.setClassName(className); populateEditForm(uiModel, configType, configName, instance); return "config_reporters/create"; } // Default Post @RequestMapping(value = "/{configType}_configs/{configName}/reporters", method = RequestMethod.POST, produces = "text/html") public String create(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @Valid Reporter reporter, BindingResult bindingResult, Model uiModel, HttpServletRequest httpServletRequest) { // assert unique_together:config&name if (Configuration.findConfigurationsByNameEquals(configName).getSingleResult() .getReporterForName(reporter.getName()) != null) { bindingResult.addError(new ObjectError("reporter.name", "There is already a LuceneReporter set up for this configuration with this name.")); } this.customValidation(configName, reporter, bindingResult); if (bindingResult.hasErrors()) { populateEditForm(uiModel, configType, configName, reporter); return "config_reporters/create"; } uiModel.asMap().clear(); Configuration config = Configuration.findConfigurationsByNameEquals(configName).getSingleResult(); reporter.setConfig(config); reporter.persist(); config.getReporters().add(reporter); config.merge(); return String.format("redirect:/%s_configs/", configType) + encodeUrlPathSegment(configName, httpServletRequest) + "/reporters/" + encodeUrlPathSegment(reporter.getName(), httpServletRequest); } // default GET indiviual reporter level @RequestMapping(value = "/{configType}_configs/{configName}/reporters/{reporterName}", produces = "text/html") public String show(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @PathVariable("reporterName") String reporterName, Model uiModel) { uiModel.addAttribute("availableItems", LibraryScanner.availableItems()); Reporter reporter = Configuration.findConfigurationsByNameEquals(configName).getSingleResult() .getReporterForName(reporterName); uiModel.addAttribute("reporter", reporter); uiModel.addAttribute("itemId", reporter.getName()); uiModel.addAttribute("configName", configName); uiModel.addAttribute("transformers", reporter.getConfig().getTransformers()); return "config_reporters/show"; } @RequestMapping(value = "/{configType}_configs/{configName}/reporters", produces = "text/html") public String list(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @RequestParam(value = "page", required = false) Integer page, @RequestParam(value = "size", required = false) Integer size, Model uiModel) { uiModel.addAttribute("availableItems", LibraryScanner.availableItems()); List<Reporter> reporters = Configuration.findConfigurationsByNameEquals(configName).getSingleResult() .getReporters(); if (page != null || size != null) { int sizeNo = Math.min(size == null ? 10 : size.intValue(), reporters.size()); final int firstResult = page == null ? 0 : (page.intValue() - 1) * sizeNo; uiModel.addAttribute("reporters", reporters.subList(firstResult, sizeNo)); float nrOfPages = (float) reporters.size() / sizeNo; uiModel.addAttribute("maxPages", (int) ((nrOfPages > (int) nrOfPages || nrOfPages == 0.0) ? nrOfPages + 1 : nrOfPages)); } else { uiModel.addAttribute("reporters", reporters); } uiModel.addAttribute("configName", configName); return "config_reporters/list"; } @RequestMapping(value = "/{configType}_configs/{configName}/reporters", method = RequestMethod.PUT, produces = "text/html") public String update(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @Valid Reporter reporter, BindingResult bindingResult, Model uiModel, HttpServletRequest httpServletRequest) { this.customValidation(configName, reporter, bindingResult); if (bindingResult.hasErrors()) { populateEditForm(uiModel, configType, configName, reporter); return String.format("%s_config_reporters/update", configType); } uiModel.asMap().clear(); reporter.setConfig(Configuration.findConfigurationsByNameEquals(configName).getSingleResult()); reporter.merge(); return String.format("redirect:/%s_configs/", configType) + encodeUrlPathSegment(configName, httpServletRequest) + "/reporters/" + encodeUrlPathSegment(reporter.getName(), httpServletRequest); } @RequestMapping(value = "/{configType}_configs/{configName}/reporters/{reporterName}", params = "form", produces = "text/html") public String updateForm(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @PathVariable("reporterName") String reporterName, Model uiModel) { Reporter reporter = Configuration.findConfigurationsByNameEquals(configName).getSingleResult() .getReporterForName(reporterName); populateEditForm(uiModel, configType, configName, reporter); return "config_reporters/update"; } @RequestMapping(value = "/{configType}_configs/{configName}/reporters/{reporterName}", method = RequestMethod.DELETE, produces = "text/html") public String delete(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @PathVariable("reporterName") String reporterName, @RequestParam(value = "page", required = false) Integer page, @RequestParam(value = "size", required = false) Integer size, Model uiModel) { Configuration config = Configuration.findConfigurationsByNameEquals(configName).getSingleResult(); config.removeReporter(reporterName); uiModel.asMap().clear(); uiModel.addAttribute("page", (page == null) ? "1" : page.toString()); uiModel.addAttribute("size", (size == null) ? "10" : size.toString()); return String.format("redirect:/%s_configs/%s/reporters/", configType, configName.toString()); } // DELETE by id @RequestMapping(value = "/{configType}_configs/{configName}/reporters/delete-by-id/{id}", method = RequestMethod.DELETE, produces = "text/html") public String deleteById(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @PathVariable("id") long id, Model uiModel) { Reporter toDelete = Reporter.findReporter(id); Configuration config = Configuration.findConfigurationsByNameEquals(configName).getSingleResult(); config.getReporters().remove(toDelete); config.merge(); return "redirect:/{configType}_configs/" + configName.toString() + "/reporters/"; } void populateEditForm(Model uiModel, String configType, String configName, Reporter reporter) { uiModel.addAttribute("availableItems", LibraryScanner.availableItems()); uiModel.addAttribute("reporter", reporter); uiModel.addAttribute("configName", configName); uiModel.addAttribute("configType", configType); } String encodeUrlPathSegment(String pathSegment, HttpServletRequest httpServletRequest) { String enc = httpServletRequest.getCharacterEncoding(); if (enc == null) { enc = WebUtils.DEFAULT_CHARACTER_ENCODING; } try { pathSegment = UriUtils.encodePathSegment(pathSegment, enc); } catch (UnsupportedEncodingException uee) { } return pathSegment; } public void customValidation(String configName, Reporter reporter, BindingResult br) { if (!FieldValidator.validSlug(reporter.getName())) { br.addError(new ObjectError("reporter.name", "The name has to be set and can only contain ASCII letters and/or '-' and/or '_'")); } } }