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.Wire; 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 CustomWireController { @RequestMapping(value = "/{configType}_configs/{configName}/wires", params = "form", produces = "text/html") public String createForm(@PathVariable("configType") String configType, @PathVariable("configName") String configName, Model uiModel) { populateEditForm(uiModel, configName, new Wire()); return String.format("%s_config_wires/create", configType); } // Default Post @RequestMapping(value = "/{configType}_configs/{configName}/wires", method = RequestMethod.POST, produces = "text/html") public String create(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @Valid Wire wire, BindingResult bindingResult, Model uiModel, HttpServletRequest httpServletRequest) { // assert unique_together:config&name if (Configuration.findConfigurationsByNameEquals(configName).getSingleResult() .getWireForName(wire.getName()) != null) { bindingResult.addError(new ObjectError("wire.name", "There is already a Wire set up for this configuration with this name.")); } this.customValidation(configName, wire, bindingResult); if (bindingResult.hasErrors()) { populateEditForm(uiModel, configName, wire); return String.format("%s_config_wires/create", configType); } uiModel.asMap().clear(); Configuration config = Configuration.findConfigurationsByNameEquals(configName).getSingleResult(); wire.setConfiguration(config); wire.persist(); config.getWiring().add(wire); config.merge(); return String.format("redirect:/%s_configs/", configType) + encodeUrlPathSegment(configName, httpServletRequest) + "/wires/" + encodeUrlPathSegment(wire.getName(), httpServletRequest); } // default GET indiviual wire level @RequestMapping(value = "/{configType}_configs/{configName}/wires/{wireName}", produces = "text/html") public String show(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @PathVariable("wireName") String wireName, Model uiModel) { uiModel.addAttribute("availableItems", LibraryScanner.availableItems()); Wire wire = Configuration.findConfigurationsByNameEquals(configName).getSingleResult() .getWireForName(wireName); uiModel.addAttribute("wire", wire); uiModel.addAttribute("itemId", wire.getName()); uiModel.addAttribute("configName", configName); uiModel.addAttribute("transformers", wire.getConfiguration().getTransformers()); return String.format("%s_config_wires/show", configType); } @RequestMapping(value = "/{configType}_configs/{configName}/wires", 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<Wire> wires = Configuration.findConfigurationsByNameEquals(configName).getSingleResult().getWiring(); if (page != null || size != null) { int sizeNo = Math.min(size == null ? 10 : size.intValue(), wires.size()); final int firstResult = page == null ? 0 : (page.intValue() - 1) * sizeNo; uiModel.addAttribute("wires", wires.subList(firstResult, sizeNo)); float nrOfPages = (float) wires.size() / sizeNo; uiModel.addAttribute("maxPages", (int) ((nrOfPages > (int) nrOfPages || nrOfPages == 0.0) ? nrOfPages + 1 : nrOfPages)); } else { uiModel.addAttribute("wires", wires); } uiModel.addAttribute("configName", configName); return String.format("%s_config_wires/list", ConfigSwitch.getTypeForUrl(configName)); } @RequestMapping(value = "/{configType}_configs/{configName}/wires", method = RequestMethod.PUT, produces = "text/html") public String update(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @Valid Wire wire, BindingResult bindingResult, Model uiModel, HttpServletRequest httpServletRequest) { this.customValidation(configName, wire, bindingResult); if (bindingResult.hasErrors()) { populateEditForm(uiModel, configName, wire); return String.format("%s_config_wires/update", configType); } uiModel.asMap().clear(); wire.setConfiguration(Configuration.findConfigurationsByNameEquals(configName).getSingleResult()); wire.merge(); return String.format("redirect:/%s_configs/", configType) + encodeUrlPathSegment(configName, httpServletRequest) + "/wires/" + encodeUrlPathSegment(wire.getName(), httpServletRequest); } @RequestMapping(value = "/{configType}_configs/{configName}/wires/{wireName}", params = "form", produces = "text/html") public String updateForm(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @PathVariable("wireName") String wireName, Model uiModel) { Wire wire = Configuration.findConfigurationsByNameEquals(configName).getSingleResult() .getWireForName(wireName); populateEditForm(uiModel, configName, wire); return String.format("%s_config_wires/update", configType); } @RequestMapping(value = "/{configType}_configs/{configName}/wires/{wireName}", method = RequestMethod.DELETE, produces = "text/html") public String delete(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @PathVariable("wireName") String wireName, @RequestParam(value = "page", required = false) Integer page, @RequestParam(value = "size", required = false) Integer size, Model uiModel) { Configuration config = Configuration.findConfigurationsByNameEquals(configName).getSingleResult(); config.removeWire(wireName); 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/wires/", configType, configName.toString()); } // DELETE by id @RequestMapping(value = "/{configType}_configs/{configName}/wires/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) { Wire toDelete = Wire.findWire(id); Configuration config = Configuration.findConfigurationsByNameEquals(configName).getSingleResult(); config.getWiring().remove(toDelete); config.merge(); return "redirect:/{configType}_configs/" + configName.toString() + "/wires/"; } void populateEditForm(Model uiModel, String configName, Wire wire) { uiModel.addAttribute("availableItems", LibraryScanner.availableItems()); Configuration config = Configuration.findConfigurationsByNameEquals(configName).getSingleResult(); uiModel.addAttribute("wire", wire); uiModel.addAttribute("configName", configName); uiModel.addAttribute("matchers", config.getMatchers()); uiModel.addAttribute("queryTransformers", wire.getQueryTransformers()); uiModel.addAttribute("authorityTransformers", wire.getAuthorityTransformers()); } 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, Wire wire, BindingResult br) { if (!FieldValidator.validSlug(wire.getName())) { br.addError( new ObjectError("wire.name", "The name can only contain ASCII letters and/or '-' and/or '_'")); } } }