Java tutorial
/* * Copyright (c) [2011-2015] "Neo Technology" / "Graph Aware Ltd." * * This product is licensed to you under the Apache License, Version 2.0 (the "License"). * You may not use this product except in compliance with the License. * * This product may include a number of subcomponents with separate copyright notices and license terms. Your use of the source code for these subcomponents is subject to the terms and conditions of the subcomponent's license, as noted in the LICENSE file. * * */ package school.service; import java.io.BufferedReader; import java.io.InputStreamReader; import java.util.HashMap; import java.util.Map; import java.util.Set; import org.neo4j.ogm.session.Session; import org.springframework.beans.factory.annotation.Autowired; import school.Neo4jSessionFactory; import school.domain.*; import org.springframework.stereotype.Service; @Service public class ImportService { public void reload() { Session session = Neo4jSessionFactory.getInstance().getNeo4jSession(); session.purgeDatabase(); session.execute(load("school.cql")); } protected static String load(String cqlFile) { StringBuilder sb = new StringBuilder(); BufferedReader reader = new BufferedReader( new InputStreamReader(Thread.currentThread().getContextClassLoader().getResourceAsStream(cqlFile))); String line; try { while ((line = reader.readLine()) != null) { sb.append(line); sb.append(" "); } } catch (Exception e) { throw new RuntimeException(e); } return sb.toString(); } private School createNewSchool() { School school = new School("Hills Road Technical College"); Map<String, Department> departments = createDepartments("Mathematics", "Science", "Engineering"); Map<String, Teacher> teachers = createTeachers("Ms Packard-Bell", "Mr Smith", "Mrs Adenough", "Mr Van der Graaf", "Mr Balls", "Ms Noethe", "Mrs Noakes", "Mr Marker", "Ms Delgado", "Mrs Glass", "Mr Flint", "Mr Kearney", "Mrs Forrester", "Mrs Fischer", "Mr Jameson"); Map<String, Subject> subjects = createSubjects("Physics", "Chemistry", "Biology", "Earth Science", "Pure Mathematics", "Applied Mathematics", "Mechanical Engineering", "Chemical Engineering", "Systems Engineering", "Civil Engineering", "Electrical Engineering"); Map<String, Student> students = createStudents("Portia Vasquez", "Andrew Parks", "Germane Frye", "Yuli Gutierrez", "Kamal Solomon", "Lysandra Porter", "Stella Santiago", "Brenda Torres", "Heidi Dunlap", "Halee Taylor", "Brennan Crosby", "Rooney Cook", "Xavier Morrison", "Zelenia Santana", "Eaton Bonner", "Leilani Bishop", "Jamalia Pickett", "Wynter Russell", "Liberty Melton", "MacKensie Obrien", "Oprah Maynard", "Lyle Parks", "Madonna Justice", "Herman Frederick", "Preston Stevenson", "Drew Carrillo", "Hamilton Woodward", "Buckminster Bradley", "Shea Cote", "Raymond Leonard", "Gavin Branch", "Kylan Powers", "Hedy Bowers", "Derek Church", "Silas Santiago", "Elton Bright", "Dora Schmidt", "Julian Sullivan", "Willow Morton", "Blaze Hines", "Felicia Tillman", "Ralph Webb", "Roth Gilmore", "Dorothy Burgess", "Lana Sandoval", "Nevada Strickland", "Lucian Franco", "Jasper Talley", "Madaline Spears", "Upton Browning", "Cooper Leon", "Celeste Ortega", "Willa Hewitt", "Rooney Bryan", "Nayda Hays", "Kadeem Salazar", "Halee Allen", "Odysseus Mayo", "Kato Merrill", "Halee Juarez", "Chloe Charles", "Abel Montoya", "Hilda Welch", "Britanni Bean", "Joelle Beach", "Ciara Odom", "Zia Williams", "Darrel Bailey", "Lance Mcdowell", "Clayton Bullock", "Roanna Mosley", "Amethyst Mcclure", "Hanae Mann", "Graiden Haynes", "Marcia Byrd", "Yoshi Joyce", "Gregory Sexton", "Nash Carey", "Rae Stevens", "Blossom Fulton", "Lev Curry", "Margaret Gamble", "Rylee Patterson", "Harper Perkins", "Kennan Murphy", "Hilda Coffey", "Marah Reed", "Blaine Wade", "Geraldine Sanders", "Kerry Rollins", "Virginia Sweet", "Sophia Merrill", "Hedda Carson", "Tamekah Charles", "Knox Barton", "Ariel Porter", "Berk Wooten", "Galena Glenn", "Jolene Anderson", "Leonard Hewitt", "Maris Salazar", "Brian Frost", "Zane Moses", "Serina Finch", "Anastasia Fletcher", "Glenna Chapman", "Mufutau Gillespie", "Basil Guthrie", "Theodore Marsh", "Jaime Contreras", "Irma Poole", "Buckminster Bender", "Elton Morris", "Barbara Nguyen", "Tanya Kidd", "Kaden Hoover", "Christopher Bean", "Trevor Daugherty", "Rudyard Bates", "Stacy Monroe", "Kieran Keller", "Ivy Garrison", "Miranda Haynes", "Abigail Heath", "Margaret Santiago", "Cade Floyd", "Allen Crane", "Stella Gilliam", "Rashad Miller", "Francis Cox", "Darryl Rosario", "Michael Daniels", "Aretha Henderson", "Roth Barrera", "Yael Day", "Wynter Richmond", "Quyn Flowers", "Yvette Marquez", "Teagan Curry", "Brenden Bishop", "Montana Black", "Hayes House", "Ramona Parker", "Merritt Hansen", "Melvin Vang", "Samantha Perez", "Thane Porter", "Vaughan Haynes", "Irma Miles", "Amery Jensen", "Montana Holman", "Kimberly Langley", "Ebony Bray", "Ishmael Pollard", "Illana Thompson", "Rhona Bowers", "Lilah Dotson", "Shelly Roach", "Celeste Woodward", "Christen Lynn", "Miranda Slater", "Lunea Clements", "Lester Francis", "David Fischer", "Kyra Bean", "Imelda Alston", "Finn Farrell", "Kirby House", "Amanda Zamora", "Rina Franco", "Sonia Lane", "Nora Jefferson", "Colton Ortiz", "Alden Munoz", "Ferdinand Cline", "Cynthia Prince", "Asher Hurst", "MacKensie Stevenson", "Sydnee Sosa", "Dante Callahan", "Isabella Santana", "Raven Bowman", "Kirby Bolton", "Peter Shaffer", "Fletcher Beard", "Irene Lowe", "Ella Talley", "Jorden Kerr", "Macey Delgado", "Ulysses Graves", "Declan Blake", "Lila Hurst", "David Rasmussen", "Desiree Cortez", "Myles Horton", "Rylee Willis", "Kelsey Yates", "Alika Stanton", "Ria Campos", "Elijah Hendricks"); // department -[:curriculum]-> subjects[] assign(departments.get("Science").getSubjects(), subjects, "Physics", "Chemistry", "Biology", "Earth Science"); assign(departments.get("Mathematics").getSubjects(), subjects, "Pure Mathematics", "Applied Mathematics"); assign(departments.get("Engineering").getSubjects(), subjects, "Mechanical Engineering", "Chemical Engineering", "Systems Engineering", "Civil Engineering", "Electrical Engineering"); //subject[] <-[:teaches]- teacher assign(subjects.get("Physics").getTeachers(), teachers, "Mr Balls", "Mr Kearney"); assign(subjects.get("Chemistry").getTeachers(), teachers, "Mr Kearney", "Mrs Noakes"); assign(subjects.get("Biology").getTeachers(), teachers, "Mrs Noakes", "Mrs Fischer"); assign(subjects.get("Earth Science").getTeachers(), teachers, "Ms Noethe"); assign(subjects.get("Pure Mathematics").getTeachers(), teachers, "Mr Flint", "Mr Marker", "Mr Van der Graaf"); assign(subjects.get("Applied Mathematics").getTeachers(), teachers, "Mrs Glass", "Mr Van der Graaf", "Ms Packard-Bell"); assign(subjects.get("Mechanical Engineering").getTeachers(), teachers, "Mr Jameson"); assign(subjects.get("Chemical Engineering").getTeachers(), teachers, "Mrs Adenough"); assign(subjects.get("Systems Engineering").getTeachers(), teachers, "Mr Smith"); assign(subjects.get("Civil Engineering").getTeachers(), teachers, "Ms Delgado"); assign(subjects.get("Electrical Engineering").getTeachers(), teachers, "Mrs Forrester"); // department -[:member]-> teachers[] assign(departments.get("Science").getTeachers(), teachers, "Mr Balls", "Mr Kearney", "Mrs Noakes", "Mrs Fischer", "Ms Noethe"); assign(departments.get("Mathematics").getTeachers(), teachers, "Mr Flint", "Mr Marker", "Mr Van der Graaf", "Mrs Glass", "Ms Packard-Bell"); assign(departments.get("Engineering").getTeachers(), teachers, "Mr Jameson", "Mrs Adenough", "Mr Smith", "Ms Delgado", "Mrs Forrester"); // school -[:departments]-> departments[] school.getDepartments().addAll(departments.values()); // school -[:staff]-> teachers[] school.getTeachers().addAll(teachers.values()); school.getStudents().addAll(students.values()); return school; } private Map<String, Teacher> createTeachers(String... names) { Map<String, Teacher> map = new HashMap<>(); for (String name : names) { map.put(name, new Teacher(name)); } return map; } private Map<String, Student> createStudents(String... names) { Map<String, Student> map = new HashMap<>(); for (String name : names) { map.put(name, new Student(name)); } return map; } private Map<String, Department> createDepartments(String... names) { Map<String, Department> map = new HashMap<>(); for (String name : names) { map.put(name, new Department(name)); } return map; } private Map<String, Subject> createSubjects(String... names) { Map<String, Subject> map = new HashMap<>(); for (String name : names) { map.put(name, new Subject(name)); } return map; } private void assign(Set to, Map from, String... names) { for (String name : names) { to.add(from.get(name)); } } }