Initial commit

.gitignore

+# Project-specific
+# none (for now)
+
+# Mac file finder metadata
+.DS_Store
+
+# Java files
+*.class
+
+# Emacs backup file
+*~
+
+# IntelliJ files
+.idea/
+out/
+*.iml
+*.iws
+*.ipr
+
+# Eclipse files
+bin/
+.settings/
+.classpath
+.project
+
+# Visual Studio / VS Code files
+.vs*/
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Netbeans files
+nbproject/private/
+build/
+nbbuild/
+dist/
+nbdist/
+nbactions.xml
+nb-configuration.xml
+
+# Maven
+target/
+
+# Miscellaneous
+tmp/
+*.tmp
+*.bak
+*.swp
+

README.md

+# Simple Course Registration System
+
+## Objectives
+
+In this assignment, students will:
+
+-   Gain additional experience developing software with a partner
+-   Demonstrate good software engineering practices
+-   Learn three design patterns
+    -   Façade Pattern
+    -   Singleton Pattern
+    -   Template Method Pattern
+-   Learn the Three-Tier architectural style
+
+## Starter Code
+
+-   Directory structure for three-tier architecture
+-   `CSVReaderWRiter.java` in the backend directory to parse CSV file contents and prepare
+    `Maps` of field names to values that students' code can use to create `Student` and
+    `CourseOffering` objects
+-   CSV files in the resources directory with starter data for `Student` and
+    `CourseOffering` objects
+

pom.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>edu.unl.cse.csce361.course_registration</groupId>
+    <artifactId>course_registration</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.1</version>
+                <configuration>
+                    <source>8</source>
+                    <target>8</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <version>3.1.2</version>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            <addClasspath>true</addClasspath>
+                            <mainClass>edu.unl.cse.csce361.course_registration.Main</mainClass>
+                        </manifest>
+                    </archive>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

src/main/java/edu/unl/cse/csce361/course_registration/CourseOffering.java

+package edu.unl.cse.csce361.course_registration;
+
+public interface CourseOffering {
+    String getCourseID();
+    String getCourseName();
+    int getSemester();
+    int getNumberOfStudentsRegistered();
+    void addStudent(Student student);
+    void removeStudent(Student student);
+}

src/main/java/edu/unl/cse/csce361/course_registration/MeetingTime.java

+package edu.unl.cse.csce361.course_registration;
+
+public enum MeetingTime {
+    MONDAY0830,
+    MONDAY0930,
+    MONDAY1030,
+    MONDAY1130,
+    MONDAY1230,
+    MONDAY1330,
+    MONDAY1430,
+    MONDAY1530,
+    MONDAY1630,
+    TUESDAY0800,
+    TUESDAY0930,
+    TUESDAY1100,
+    TUESDAY1230,
+    TUESDAY1400,
+    TUESDAY1530;
+    TUESDAY1700;
+}

src/main/java/edu/unl/cse/csce361/course_registration/Student.java

+package edu.unl.cse.csce361.course_registration;
+
+public interface Student {
+    String getName();
+    String getEmail();
+    String getMajor();
+    void registerForCourse(String courseID);
+    void removeCourse(String courseID);
+    boolean hasScheduleConflict(MeetingTime meetingTime);
+}

src/main/java/edu/unl/cse/csce361/course_registration/backend/CSVReaderWriter.java

+/*
+ * CSV Reader/Writer, copyright (c) 2019 Christopher A. Bohn, bohn@unl.edu.
+ */
+
+
+package edu.unl.cse.course_registration.backend;
+
+import java.io.*;
+import java.net.URL;
+import java.util.*;
+
+public class CSVReaderWriter {
+    // this does not (yet) handle data elements that include commas and/or are surrounded by quotation marks
+    private static final String DELIMTER = ",";
+    private static final char BYTE_ORDER_MARK = '\ufeff';
+
+    public static Set<Map<String, String>> readCSV(String filename) {
+        Set<Map<String, String>> csvSet = null;
+        ClassLoader classLoader = CSVReaderWriter.class.getClassLoader();
+        try(InputStream inputStream = classLoader.getResourceAsStream("csv/"+filename)) {
+            csvSet = parseCSV(inputStream);
+        } catch (IOException ioException) {
+            System.err.println("Error loading " + filename + ".  " + ioException);
+        }
+        return csvSet;
+    }
+
+    public static boolean writeCSV(String filename, Set<Map<String, String>> data) {
+        boolean wroteFile = true;
+        ClassLoader classLoader = CSVReaderWriter.class.getClassLoader();
+        URL resource = classLoader.getResource("csv/" + filename);
+        if (resource != null) {
+            File file = new File(resource.getPath());
+            try(OutputStream outputStream = new FileOutputStream(file)) {
+                placeCSVonStream(data, outputStream);
+            } catch (FileNotFoundException fileNotFoundException) {
+                System.err.println("Could not open " + filename + "; probably due to a bad pathname.  " + fileNotFoundException);
+                wroteFile = false;
+            } catch (IOException ioException) {
+                System.err.println("Error opening " + filename + ".  " + ioException);
+                wroteFile = false;
+            }
+        } else {
+            System.err.println("csv/" + filename + " not found. Cannot overwrite file unless it exists.");
+            wroteFile = false;
+        }
+        return wroteFile;
+    }
+
+    static Set<Map<String, String>> parseCSV(InputStream inputStream) throws IOException {
+        Set<Map<String, String>> csvSet = new HashSet<>();
+        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
+        String line;
+        List<String> fieldNames = new ArrayList<>();
+        boolean header = true;
+        while ((line = reader.readLine()) != null) {
+            String[] elements = line.split(DELIMTER);
+            if (header) {
+                if (elements[0].charAt(0) == BYTE_ORDER_MARK) {
+                    elements[0] = elements[0].substring(1);     // remove text-encoding character sometimes added by Excel
+                }
+                fieldNames.addAll(Arrays.asList(elements));
+                header = false;
+            } else {
+                Map<String, String> row = new HashMap<>();
+                int column = 0;
+                for (String element: elements) {
+                    row.put(fieldNames.get(column++), element);
+                }
+                csvSet.add(row);
+            }
+        }
+        return csvSet;
+    }
+
+    static void placeCSVonStream(Set<Map<String, String>> data, OutputStream outputStream) {
+        PrintStream writer = new PrintStream(outputStream);
+        Set<String> fieldNames = null;
+        int number_of_fields = 0;
+        for (Map<String, String> row: data) {
+            int field_number = 0;
+            if (fieldNames == null) {
+                fieldNames = row.keySet();
+                number_of_fields = fieldNames.size();
+                for (String field: fieldNames) {
+                    writer.print(field);
+                    writer.print(++field_number<number_of_fields ? "," : "\n");
+                }
+            }
+            field_number = 0;
+            for (String field: fieldNames) {
+                String value = row.get(field);
+                writer.print(value != null ? value : "");
+                writer.print(++field_number<number_of_fields ? "," : "\n");
+            }
+        }
+    }
+
+/*
+    public static void main(String[] args) {
+        Set<Map<String, String>> demo = readCSV("demo.csv");
+        boolean success = writeCSV("out.csv", demo);
+        System.out.println(success ? "Wrote file!" : "Didn't write file");
+    }
+*/
+}

src/main/resources/csv/courses.csv

+CourseID,Section,CourseName,Room,Days,StartTime,Semester,NumberOfStudentsRegistered,NumberOfAvailableSeats,URL,Prerequisite1,Prerequisite2
+CSCE10,1,INTRODUCTION TO CSE,AVH115,TUESDAY,1700,1198,8,5,,,
+CSCE10,2,INTRODUCTION TO CSE,LPH137,FRIDAY,1030,1198,16,5,,,
+CSCE10,3,INTRODUCTION TO CSE,AVH111,TUESDAY,1600,1198,15,17,,,
+CSCE10,5,INTRODUCTION TO CSE,KAUF112,TUESDAY,1530,1198,17,4,,,
+CSCE100,1,INTRO TO INFORMATICS,HAH133,TUESDAY,1100,1198,17,2,,,
+CSCE101,1,FUND OF COMPUTER SCI,AVH106,MONDAY,1130,1198,8,18,,,
+CSCE101,ONLINE,FUND OF COMPUTER SCI,,,,1198,15,,https://xyzzy.edu/foo,,
+CSCE120,1,LEARNING TO CODE,AVH110,TUESDAY,1700,1198,4,19,,,
+CSCE155,250,COMP SCI I,HENZ124,MONDAY,1700,1198,7,20,,,
+CSCE155,150,COMP SCI I,AVH119,TUESDAY,1100,1198,18,15,,,
+CSCE155,250,COMP SCI I,BESY117,MONDAY,1430,1198,10,16,,,
+CSCE155,ONLINE,COMP SCI I,,, ,1198,13,,https://xyzzy.edu/bar,,
+CSCE155,150,COMP SCI I,AVH112,TUESDAY,0800,1198,1,10,,,
+CSCE156,150,COMPUTER SCIENCE II,AVH106,TUESDAY,1400,1198,12,11,,CSCE155,
+CSCE196,1,SPECIAL TOPICS,AVH115,TUESDAY,1700,1198,17,17,,,
+CSCE196,2,SPECIAL TOPICS,LPH137,FRIDAY,1030,1198,16,3,,,
+CSCE196,3,SPECIAL TOPICS,AVH111,TUESDAY,1600,1198,9,5,,,
+CSCE230,150,COMPUTER ORGANIZATN,HAH112,MONDAY,0930,1198,2,7,,CSCE155,
+CSCE231,150,COMP SYSTMS ENGINEERING,BL206,MONDAY,1230,1198,9,17,,CSCE235,
+CSCE235,150,INTR DISCRETE STRUCT,LPH27,TUESDAY,1230,1198,13,10,,CSCE155,
+CSCE251,ONLINE,UNIX PROGRAMMING,,,,1198,10,,https://xyzzy.edu/baz,,
+CSCE310,150,DATA STRUCT & ALGORITH,AVH115,MONDAY,1330,1198,17,14,,CSCE156,CSCE235
+CSCE310,1,DATA STRUCT & ALGORITH,AVH119,MONDAY,1230,1198,10,17,,CSCE156,CSCE235
+CSCE322,1,PRGRM LANG CONCEPTS,AVH106,MONDAY,1030,1198,12,17,,CSCE156,
+CSCE351,1,OPERATNG SYS KERNELS,HAH102,TUESDAY,0930,1198,9,19,,CSCE230 OR CSCE231,CSCE310
+CSCE361,2,SOFTWARE ENGINEERING,AVH115,MONDAY,1430,1198,12,11,,CSCE310,
+CSCE378,1,HUM-COMPUTR INTERACT,LPH105,MONDAY,1430,1198,15,1,,CSCE156,
+CSCE378,2,HUM-COMPUTR INTERACT,LPH105,MONDAY,1530,1198,17,19,,CSCE156,
+CSCE411,1,DATA MODELING SYST DEV,AVH108,MONDAY,1230,1198,4,20,,CSCE310,
+CSCE413,1,DATABASE SYSTEMS,AVH119,MONDAY,1130,1198,20,20,,CSCE310,
+CSCE423,1,DSGN & ANLYS ALGORTHMS,AVH106,MONDAY,1330,1198,13,3,,CSCE310,
+CSCE428,1,AUTOMA COMP &LANG,AVH19,MONDAY,1230,1198,10,2,,CSCE310,
+CSCE438,150,SENSOR NETWORKS,AVH106,MONDAY,0930,1198,1,20,,CSCE230,CSCE310
+CSCE438,151,SENSOR NETWORKS,AVH21,MONDAY,0830,1198,11,12,,CSCE230,CSCE310
+CSCE440,1,NUMERICAL ANALYSIS I,AVH19,MONDAY,1430,1198,9,17,,CSCE155,
+CSCE457,1,SYSTEMS ADMINISTRATN,AVH119,TUESDAY,0800,1198,14,9,,CSCE310,
+CSCE458,1,MOLECULAR AND NANO COMM,AVH119,MONDAY,1330,1198,7,16,,CSCE310,
+CSCE461,1,ADV TOP IN SOFTWARE ENGR,BESY108,MONDAY,1230,1198,0,19,,CSCE361,
+CSCE462,1,COMM NETWORKS,LPH27,MONDAY,1230,1198,16,17,,CSCE310,
+CSCE467,1,TSTNG VERIFCTION & ANLYS,HAH110,TUESDAY,1100,1198,4,3,,CSCE361,
+CSCE473,1,COMPUTER VISION,HAH133,TUESDAY,0930,1198,14,17,,CSCE156,
+CSCE476,1,INTRO ARTIFCL INTELL,AVH118,MONDAY,1430,1198,1,13,,CSCE310,
+CSCE476,2,INTRO ARTIFCL INTELL,AVH21,MONDAY,1530,1198,14,16,,CSCE310,
+CSCE477,1,CRYPTOGRAPHY & SECURTY,AVH109,TUESDAY,1230,1198,15,13,,CSCE310,
+CSCE478,1,INTRO MACHINE LRNG,AVH119,TUESDAY,0930,1198,20,4,,CSCE310,
+CSCE478,2,INTRO MACHINE LRNG,BURN118,MONDAY,1700,1198,13,7,,CSCE310,
+CSCE479,150,INTRO DEEP LEARNING,AVH119,MONDAY,1530,1198,9,0,,CSCE310,
+CSCE479,151,INTRO DEEP LEARNING,AVH119,MONDAY,1630,1198,17,15,,CSCE310,
+CSCE486,2,DESIGN STUDIO: CS,HAH104,TUESDAY,1400,1198,3,0,,CSCE361,
+CSCE488,2,DESIGN STUDIO: CE,AVH118,TUESDAY,1400,1198,18,6,,CSCE236,CSCE361
+CSCE496,2,SPECIAL TOPICS,LPH101,TUESDAY,1230,1198,20,13,,,
+CSCE496,3,SPECIAL TOPICS,LPH101,TUESDAY,0930,1198,5,0,,,
\ No newline at end of file

src/main/resources/csv/students.csv

+Name,Major,RegisteredCourse1,RegisteredCourse2,RegisteredCourse3,RegisteredCourse4,RegisteredCourse5,RegisteredCourse6,RegisteredCourse7,RegisteredCourse8,CompletedCourse1,CompletedCourse2,CompletedCourse3,CompletedCourse4,CompletedCourse5,CompletedCourse6,CompletedCourse7,CompletedCourse8,CompletedCourse9,CompletedCourse10,CompletedCourse11,CompletedCourse12,CompletedCourse13,CompletedCourse14,CompletedCourse15,CompletedCourse16,CompletedCourse17,CompletedCourse18,CompletedCourse19,CompletedCourse20,CompletedCourse21,CompletedCourse22,CompletedCourse23,CompletedCourse24,CompletedCourse25
+Stu Dent,Computer Science,CSCE156,,,,,,,,CSCE155,CSCE235,,,,,,,,,,,,,,,,,,,,,,,
+Ima Coder,Computer Science,,,,,,,,,CSCE155,CSCE156,,,,,,,,,,,,,,,,,,,,,,,
+Turanga Leela,Computer Engineering,CSCE156,,,,,,,,CSCE155,,,,,,,,,,,,,,,,,,,,,,,,
+Philip Fry,Undecided,CSCE10,CSCE100,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
+Lisa Simpson,Computer Engineering,CSCE230,,,,,,,,CSCE155,CSCE156,CSCE235,CSCE310,,,,,,,,,,,,,,,,,,,,,
+Bart Simposon,Computer Science,CSCE156,,,,,,,,CSCE155,CSCE235,,,,,,,,,,,,,,,,,,,,,,,
+Moe Szyslak,Undecided,CSCE10,CSCE101,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
+I.P. Freely,Undecided,CSCE10,CSCE101,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
+Seymour Butz,Computer Science,CSCE235,,,,,,,,CSCE155,CSCE156,CSCE231,CSCE310,,,,,,,,,,,,,,,,,,,,,
+Hugh Jass,Computer Engineering,CSCE230,,,,,,,,CSCE155,CSCE156,CSCE235,,,,,,,,,,,,,,,,,,,,,,
+Anita Bath,Computer Science,,,,,,,,,CSCE155,CSCE156,CSCE231,CSCE235,CSCE310,CSCE361,,,,,,,,,,,,,,,,,,,
+Ura Snotball,Computer Engineering,,,,,,,,,CSCE155,CSCE156,CSCE230,CSCE235,,,,,,,,,,,,,,,,,,,,,
+Yuri Nator,Computer Science,,,,,,,,,CSCE155,CSCE156,CSCE231,CSCE235,,,,,,,,,,,,,,,,,,,,,
+Moe Ron,Computer Science,,,,,,,,,CSCE155,CSCE156,CSCE231,CSCE235,CSCE310,,,,,,,,,,,,,,,,,,,,
\ No newline at end of file