Java tutorial
/** * Copyright (C) 2015-2018 Diego Feitosa [dnfeitosa@gmail.com] * * 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 co.degraph.server.ui.controllers; import co.degraph.core.models.Artifact; import co.degraph.server.services.ArtifactService; import co.degraph.server.services.Organization; import co.degraph.server.services.OrganizationService; import co.degraph.server.ui.resources.TreeNode; import co.degraph.server.ui.resources.TreeNodes; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.http.ResponseEntity; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import java.util.Collection; import java.util.HashSet; import java.util.List; import java.util.Set; import static java.util.stream.Collectors.toSet; import static org.apache.commons.collections4.CollectionUtils.collate; import static org.springframework.http.HttpStatus.OK; import static org.springframework.web.bind.annotation.RequestMethod.GET; @Controller public class TreeController { private final ArtifactService artifactService; private final OrganizationService organizationService; @Autowired public TreeController(ArtifactService artifactService, OrganizationService organizationService) { this.artifactService = artifactService; this.organizationService = organizationService; } @RequestMapping(path = "/ui/tree/nodes", method = GET) public ResponseEntity<TreeNodes> getTreeNodes(@RequestParam(value = "parent", required = false) String parent) { Set<Organization> organizations = organizationService.getOrganizations(parent); Set<Artifact> artifacts = artifactService.getArtifactsFromOrganization(parent); List<TreeNode> allNodes = collate(organiztionToNode(organizations), artifactToNode(artifacts), false); return new ResponseEntity<>(new TreeNodes(new HashSet<>(allNodes)), OK); } private Collection<TreeNode> artifactToNode(Set<Artifact> artifacts) { return artifacts.stream() .map(artifact -> new TreeNode(artifact.getOrganization(), artifact.getName(), "artifact")) .collect(toSet()); } private Collection<TreeNode> organiztionToNode(Set<Organization> organizations) { return organizations.stream() .map(organization -> new TreeNode(organization.getParent(), organization.getName(), "organization")) .collect(toSet()); } }