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.HashSet; 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.kew.rmf.matchconf.WiredTransformer; import org.kew.rmf.matchconf.utils.GetterSetter; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.validation.BindingResult; 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 CustomWiredTransformerController { @SuppressWarnings("serial") private final static HashSet<String> T_TYPES = new HashSet<String>() { { add("query"); add("authority"); } }; @RequestMapping(value = "/{configType}_configs/{configName}/wires/{wireName}/{transformerType}_transformers", method = RequestMethod.POST, produces = "text/html") public String create(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @PathVariable("wireName") String wireName, @PathVariable("transformerType") String transformerType, @Valid WiredTransformer wiredTransformer, BindingResult bindingResult, Model uiModel, HttpServletRequest httpServletRequest) throws Exception { if (!T_TYPES.contains(transformerType)) throw new Exception(String.format("The transformer type has to be of %s", T_TYPES)); if (bindingResult.hasErrors()) { populateEditForm(uiModel, configType, configName, wiredTransformer); return "wiredtransformers/create"; } uiModel.asMap().clear(); wiredTransformer.persist(); Wire wire = Configuration.findConfigurationsByNameEquals(configName).getSingleResult() .getWireForName(wireName); new GetterSetter<List<WiredTransformer>>().getattr(wire, transformerType + "Transformers") .add(wiredTransformer); wire.merge(); return String.format("redirect:/%s_configs/%s/wires/%s/%s_transformers/%s", configType, configName, wireName, transformerType, wiredTransformer.getName()); } @RequestMapping(value = "/{configType}_configs/{configName}/wires/{wireName}/{transformerType}_transformers", params = "form", produces = "text/html") public String createForm(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @PathVariable("wireName") String wireName, @PathVariable("transformerType") String transformerType, Model uiModel) throws Exception { if (!T_TYPES.contains(transformerType)) throw new Exception(String.format("The transformer type has to be of %s", T_TYPES)); WiredTransformer instance = new WiredTransformer(); populateEditForm(uiModel, configType, configName, instance); return "wired_transformers/create"; } @RequestMapping(value = "/{configType}_configs/{configName}/wires/{wireName}/{transformerType}_transformers/{wiredTransformerName}", produces = "text/html") public String show(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @PathVariable("wireName") String wireName, @PathVariable("transformerType") String transformerType, @PathVariable("wiredTransformerName") String wiredTransformerName, Model uiModel) throws Exception { if (!T_TYPES.contains(transformerType)) throw new Exception(String.format("The transformer type has to be of %s", T_TYPES)); Wire wire = Configuration.findConfigurationsByNameEquals(configName).getSingleResult() .getWireForName(wireName); WiredTransformer wTransformer = wire.getWiredTransformer(transformerType, wiredTransformerName); uiModel.addAttribute("wiredTransformer", wTransformer); uiModel.addAttribute("transformerType", transformerType); uiModel.addAttribute("itemId", wiredTransformerName); return "wired_transformers/show"; } @RequestMapping(value = "/{configType}_configs/{configName}/wires/{wireName}/{transformerType}_transformers", produces = "text/html") public String list(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @PathVariable("wireName") String wireName, @PathVariable("transformerType") String transformerType, @RequestParam(value = "page", required = false) Integer page, @RequestParam(value = "size", required = false) Integer size, Model uiModel) throws Exception { Wire wire = Configuration.findConfigurationsByNameEquals(configName).getSingleResult() .getWireForName(wireName); List<WiredTransformer> wTransformers = new GetterSetter<List<WiredTransformer>>().getattr(wire, transformerType + "Transformers"); uiModel.addAttribute("transformerType", transformerType); if (page != null || size != null) { int sizeNo = size == null ? 10 : size.intValue(); final int firstResult = page == null ? 0 : (page.intValue() - 1) * sizeNo; uiModel.addAttribute("wiredTransformers", wTransformers.subList(firstResult, Math.min(firstResult + sizeNo, wTransformers.size()))); float nrOfPages = (float) wTransformers.size() / sizeNo; uiModel.addAttribute("maxPages", (int) ((nrOfPages > (int) nrOfPages || nrOfPages == 0.0) ? nrOfPages + 1 : nrOfPages)); } else { uiModel.addAttribute("wiredTransformers", wTransformers); } return "wired_transformers/list"; } @RequestMapping(value = "/{configType}_configs/{configName}/wires/{wireName}/{transformerType}_transformers", method = RequestMethod.PUT, produces = "text/html") public String update(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @PathVariable("wireName") String wireName, @PathVariable("transformerType") String transformerType, @Valid WiredTransformer wiredTransformer, BindingResult bindingResult, Model uiModel, HttpServletRequest httpServletRequest) { if (bindingResult.hasErrors()) { populateEditForm(uiModel, configType, configName, wiredTransformer); return "wired_transformers/update"; } uiModel.asMap().clear(); wiredTransformer.merge(); return String.format("redirect:/%s_configs/%s/wires/%s/%s_transformers/%s", configType, configName, wireName, transformerType, wiredTransformer.getName()); } @RequestMapping(value = "/{configType}_configs/{configName}/wires/{wireName}/{transformerType}_transformers/{wiredTransformerName}", params = "form", produces = "text/html") public String updateForm(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @PathVariable("wireName") String wireName, @PathVariable("transformerType") String transformerType, @PathVariable("wiredTransformerName") String wiredTransformerName, Model uiModel) throws Exception { Wire wire = Configuration.findConfigurationsByNameEquals(configName).getSingleResult() .getWireForName(wireName); populateEditForm(uiModel, configType, configName, wire.getWiredTransformer(transformerType, wiredTransformerName)); return "wired_transformers/update"; } @RequestMapping(value = "/{configType}_configs/{configName}/wires/{wireName}/{transformerType}_transformers/{wiredTransformerName}", method = RequestMethod.DELETE, produces = "text/html") public String delete(@PathVariable("configType") String configType, @PathVariable("configName") String configName, @PathVariable("wireName") String wireName, @PathVariable("transformerType") String transformerType, @PathVariable("wiredTransformerName") String wiredTransformerName, @RequestParam(value = "page", required = false) Integer page, @RequestParam(value = "size", required = false) Integer size, Model uiModel) throws Exception { Wire wire = Configuration.findConfigurationsByNameEquals(configName).getSingleResult() .getWireForName(wireName); WiredTransformer wiredTransformer = wire.getWiredTransformer(transformerType, wiredTransformerName); new GetterSetter<List<WiredTransformer>>().getattr(wire, transformerType + "Transformers") .remove(wiredTransformer); wire.merge(); 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/%s/%s_transformers", configType, configName, wireName, transformerType); } void populateEditForm(Model uiModel, String configType, String configName, WiredTransformer wTransformer) { uiModel.addAttribute("availableItems", LibraryScanner.availableItems()); uiModel.addAttribute("wiredTransformer", wTransformer); uiModel.addAttribute("transformers", Configuration.findConfigurationsByNameEquals(configName).getSingleResult().getTransformers()); 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; } }