Add getAvailable on Movie, Projection, Room and Slot

src/main/java/DB/Movie.java

@@ -66,6 +66,20 @@ public class Movie extends Table {
         return list;
     }
 
+    static public ArrayList<Movie> getAvailable(Competition competition) {
+        ArrayList<Movie> list = new ArrayList<>();
+        try {
+            PreparedStatement ps = DB.getConnection().prepareStatement("SELECT name FROM Movie WHERE CompetitionName = ?");
+            ps.setString(1, competition.getName());
+            for (ResultSet rs = ps.executeQuery(); rs.next();)
+                list.add(new Movie(rs.getString("name")));
+            ps.close();
+        } catch (SQLException | NullPointerException | NotFoundInTable e) {
+            return null;
+        }
+        return list;
+    }
+
     public ArrayList<Projection> getProjections() {
         ArrayList<Projection> list = new ArrayList<>();
         try {

src/main/java/DB/Projection.java

@@ -18,12 +18,13 @@ public class Projection extends Table {
         this.id = id;
     }
 
-    public Projection(Date startDate, Competition competition, Room room, Movie movie) {
+    public Projection(Date startDate, Competition competition, Room room, Movie movie, Slot slot) {
         super("Projection", "id", Map.ofEntries(
                 Map.entry("startDate", startDate.toString()),
                 Map.entry("CompetitionName", competition.getName()),
                 Map.entry("RoomName", room.getName()),
-                Map.entry("MovieName", movie.getName())
+                Map.entry("MovieName", movie.getName()),
+                Map.entry("SlotId", Integer.toString(slot.getId()))
         ));
         this.id = Integer.parseInt(super.checkValue);
     }
@@ -44,6 +45,10 @@ public class Projection extends Table {
         return get(Movie.class, "MovieName");
     }
 
+    public Slot getSlot() {
+        return get(Slot.class, "SlotId");
+    }
+
     public boolean setStartDate(Date startDate) {
         return set("startDate", startDate.toString());
     }
@@ -73,6 +78,20 @@ public class Projection extends Table {
         return list;
     }
 
+    static public ArrayList<Projection> getAvailable(Competition competition) {
+        ArrayList<Projection> list = new ArrayList<>();
+        try {
+            PreparedStatement ps = DB.getConnection().prepareStatement("SELECT id FROM Projection WHERE CompetitionName = ?");
+            ps.setString(1, competition.getName());
+            for (ResultSet rs = ps.executeQuery(); rs.next();)
+                list.add(new Projection(rs.getInt("id")));
+            ps.close();
+        } catch (SQLException | NullPointerException | NotFoundInTable e) {
+            return null;
+        }
+        return list;
+    }
+
     @Override
     public boolean delete() {
         return false;

src/main/java/DB/Room.java

@@ -4,6 +4,7 @@ import Exceptions.AlreadyOnTable;
 import Exceptions.NotFoundInTable;
 import lombok.Getter;
 
+import java.sql.Date;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
@@ -47,6 +48,22 @@ public class Room extends Table {
         return list;
     }
 
+    static public ArrayList<Room> getAvailable(Movie movie, Slot slot, Date date) {
+        ArrayList<Room> list = new ArrayList<>();
+        try {
+            PreparedStatement ps = DB.getConnection().prepareStatement("SELECT R.name FROM Room R INNER JOIN CompetitionRoom CR on R.name = CR.RoomName LEFT JOIN Projection P on R.name = P.RoomName LEFT JOIN Slot S on S.id = P.SlotId WHERE CR.CompetitionName = ? AND NOT (S.id = ? AND P.startDate = ?) OR P.id IS NULL");
+            ps.setString(1, movie.getCompetition().getName());
+            ps.setInt(2, slot.getId());
+            ps.setDate(3, date);
+            for (ResultSet rs = ps.executeQuery(); rs.next();)
+                list.add(new Room(rs.getString("name")));
+            ps.close();
+        } catch (SQLException | NullPointerException | NotFoundInTable e) {
+            return null;
+        }
+        return list;
+    }
+
     public ArrayList<Competition> getCompetitions() {
         ArrayList<Competition> list = new ArrayList<>();
         try {

src/main/java/DB/Slot.java

@@ -3,10 +3,7 @@ package DB;
 import Exceptions.NotFoundInTable;
 import lombok.Getter;
 
-import java.sql.Date;
+import java.sql.*;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
-import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.Map;
 
@@ -26,8 +23,8 @@ public class Slot extends Table {
         this.id = Integer.parseInt(super.checkValue);
     }
 
-    public Date getStartTime() {
+    public Time getStartTime() {
-        return get(Date.class, "startTime");
+        return get(Time.class, "startTime");
     }
 
     public Competition getCompetition() {
@@ -42,6 +39,20 @@ public class Slot extends Table {
         return set("startTime", startTime.toString());
     }
 
+    public ArrayList<Projection> getProjections() {
+        ArrayList<Projection> list = new ArrayList<>();
+        try {
+            PreparedStatement ps = DB.getConnection().prepareStatement("SELECT id FROM Projection WHERE SlotId = ?");
+            ps.setInt(1, id);
+            for (ResultSet rs = ps.executeQuery(); rs.next();)
+                list.add(new Projection(rs.getInt("id")));
+            ps.close();
+        } catch (SQLException | NullPointerException | NotFoundInTable e) {
+            return null;
+        }
+        return list;
+    }
+
     static public ArrayList<Slot> getAll() {
         ArrayList<Slot> list = new ArrayList<>();
         try {
@@ -54,4 +65,19 @@ public class Slot extends Table {
         }
         return list;
     }
+
+    static public ArrayList<Slot> getAvailable(Competition competition, Date date) {
+        ArrayList<Slot> list = new ArrayList<>();
+        try {
+            PreparedStatement ps = DB.getConnection().prepareStatement("SELECT S.id FROM Slot S LEFT JOIN Projection P ON S.id = P.SlotId WHERE S.CompetitionName = ? AND P.startDate != ? OR P.id IS NULL");
+            ps.setString(1, competition.getName());
+            ps.setDate(2, date);
+            for (ResultSet rs = ps.executeQuery(); rs.next();)
+                list.add(new Slot(rs.getInt("id")));
+            ps.close();
+        } catch (SQLException | NullPointerException | NotFoundInTable e) {
+            return null;
+        }
+        return list;
+    }
 }