diff --git a/LineGraph.java b/LineGraph.java
new file mode 100644
index 0000000..7edbd99
--- /dev/null
+++ b/LineGraph.java
@@ -0,0 +1,708 @@
+import javafx.util.Pair;
+
+import java.sql.*;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.*;
+
+
+/**
+ * Contains all data and methods needed to display the line chart.
+ */
+public class LineGraph implements Chart, Observable {
+
+    private Campaign campaign;
+
+    private Metric metric;
+    private TimeInterval timeInterval;
+    private ArrayList dataPoints;
+
+    private List<Observer> observers = new LinkedList<Observer>(); // this will contain the window that displays the chart
+
+
+    public LineGraph(Metric metric, TimeInterval timeInterval, Observer observer, Campaign campaign, String predicate){
+        this.metric = metric;
+        this.timeInterval = timeInterval;
+        observers.add(observer);
+        this.campaign = campaign;
+
+        try {
+            this.campaign.connect().setAutoCommit(false);
+        } catch (SQLException e ){
+            System.out.println(e);
+        }
+        calculateDataPoints(metric, predicate);
+    }
+
+    public LineGraph(Campaign campaign){
+        this.campaign = campaign;
+    }
+
+    /**
+     * Use campaign's reference to get Campaign's data and calculation methods.
+     * Apply filters to campaign's data
+     * Calculates data points to be displayed on the chart.
+     * dataPoints' Pair contains value of the metric computed over some time and that time period
+     * (e.g. <30 bounces, 9am - 10am on 29/02/2020>)
+     * TriggerUpdate at the end so the View can get the dataPoints.
+     */
+    /**
+     * Use campaign's reference to get Campaign's data and calculation methods.
+     * Apply filters to campaign's data
+     * Calculates data points to be displayed on the chart.
+     * dataPoints' Pair contains value of the metric computed over some time and that time period
+     * (e.g. <30 bounces, 9am - 10am on 29/02/2020>)
+     * TriggerUpdate at the end so the View can get the dataPoints.
+     */
+    private void calculateDataPoints(Metric metric, String predicate){
+
+        switch (metric){
+            case TOTAL_IMPRESSIONS:
+                dataPoints = calculateTotalImpressions(predicate);
+                break;
+            case TOTAL_IMPRESSION_COST:
+                dataPoints = calculateImpressionCosts(predicate);
+                break;
+            case TOTAL_CLICKS:
+                dataPoints = calculateTotalClicks(predicate);
+                break;
+            case TOTAL_CLICK_COST:
+                dataPoints = calculateClickCosts(predicate);
+                break;
+            case TOTAL_COST:
+                dataPoints = calculateTotalCosts(predicate);
+                break;
+            case TOTAL_CONVERSIONS:
+                dataPoints = calculateTotalConversions(predicate);
+                break;
+            case CONVERSION_RATE:
+                dataPoints = calculateConversionRates(predicate);
+                break;
+            case BOUNCES:
+                dataPoints = calculateBounces(predicate);
+                break;
+            case BOUNCE_RATE:
+                dataPoints = calculateBounceRates(predicate);
+                break;
+            case TOTAL_UNIQUES:
+                dataPoints = calculateTotalUniques(predicate);
+                break;
+            case CTR:
+                dataPoints = calculateCTRs(predicate);
+                break;
+            case CPA:
+                dataPoints = calculateCPAs(predicate);
+                break;
+            case CPC:
+                dataPoints = calculateCPCs(predicate);
+                break;
+            case CPM:
+                // impression
+                break;
+
+        }
+
+        triggerUpdate();
+    }
+
+    private LocalDateTime getEndDateTime(LocalDateTime startDateTime){
+        LocalDateTime endDateTime;
+        switch(timeInterval){
+            case HOUR:
+                endDateTime = startDateTime.plusHours(1);
+                break;
+            case DAY:
+                endDateTime = startDateTime.plusDays(1);
+                break;
+            case WEEK:
+                endDateTime= startDateTime.plusWeeks(1);
+                break;
+            case MONTH:
+                endDateTime = startDateTime.plusMonths(1);
+                break;
+            default:
+                endDateTime = startDateTime; //TODO handle this case differently
+                break;
+        }
+        return endDateTime;
+    }
+
+    private ArrayList<DataPoint<Integer, LocalDateTime>> calculateTotalImpressions(String predicate){
+        ArrayList<DataPoint<Integer, LocalDateTime>> dataPoints = new ArrayList<DataPoint<Integer, LocalDateTime>>();
+        ArrayList<Impression> impressionLog = filterImpressionLog(predicate);
+        Collections.sort(impressionLog);
+        LocalDateTime startDateTime = impressionLog.get(0).getDateTime();
+
+        LocalDateTime endDateTime = getEndDateTime(startDateTime);
+        int i = 0;
+        ArrayList<Impression> impressions = new ArrayList<Impression>();
+        while(impressionLog.size() > i){
+            Impression impression = impressionLog.get(i);
+            if(impression.getDateTime().isBefore(endDateTime)){
+                impressions.add(impression);
+            }
+            else{
+                dataPoints.add(new DataPoint<Integer, LocalDateTime>(campaign.calcImpressions(impressions), startDateTime));
+
+                startDateTime = endDateTime;
+                endDateTime = getEndDateTime(startDateTime);
+                impressions = new ArrayList<Impression>();
+                i--;
+            }
+            i++;
+        }
+        return dataPoints;
+    }
+
+    private ArrayList<DataPoint<Double, LocalDateTime>> calculateImpressionCosts(String predicate) {
+        return null;
+    }
+
+    private ArrayList<DataPoint<Integer, LocalDateTime>> calculateTotalClicks(String predicate) {
+        ArrayList<DataPoint<Integer, LocalDateTime>> dataPoints = new ArrayList<DataPoint<Integer, LocalDateTime>>();
+        ArrayList<Click> clickLog = filterClickLog(predicate);
+        clickLog.sort(getClickComparator());
+
+        LocalDateTime startDateTime = clickLog.get(0).getDateTime();
+        LocalDateTime endDateTime = getEndDateTime(startDateTime);
+        int i = 0;
+        ArrayList<Click> clicks = new ArrayList<Click>();
+        while(clickLog.size() > i){
+            Click click = clickLog.get(i);
+            if(click.getDateTime().isBefore(endDateTime)){
+                clicks.add(click);
+            }
+            else{
+                dataPoints.add(new DataPoint<Integer, LocalDateTime>(campaign.calcClicks(clicks), startDateTime));
+                startDateTime = endDateTime;
+                endDateTime = getEndDateTime(startDateTime);
+                clicks = new ArrayList<Click>();
+                i--;
+            }
+            i++;
+        }
+        return dataPoints;
+    }
+
+    private ArrayList<DataPoint<Double, LocalDateTime>> calculateClickCosts(String predicate) {
+        ArrayList<DataPoint<Double, LocalDateTime>> dataPoints = new ArrayList<DataPoint<Double, LocalDateTime>>();
+        ArrayList<Click> clickLog = filterClickLog(predicate);
+        clickLog.sort(getClickComparator());
+
+        LocalDateTime startDateTime = clickLog.get(0).getDateTime();
+        LocalDateTime endDateTime = getEndDateTime(startDateTime);
+        int i = 0;
+        ArrayList<Click> clicks = new ArrayList<Click>();
+        while(clickLog.size() > i){
+            Click click = clickLog.get(i);
+            if(click.getDateTime().isBefore(endDateTime)){
+                clicks.add(click);
+            }
+            else{
+                dataPoints.add(new DataPoint<Double, LocalDateTime>(campaign.calcTotalClickCost(clicks), startDateTime));
+                startDateTime = endDateTime;
+                endDateTime = getEndDateTime(startDateTime);
+                clicks = new ArrayList<Click>();
+                i--;
+            }
+            i++;
+        }
+        return dataPoints;
+    }
+
+    private ArrayList<DataPoint<Double, LocalDateTime>> calculateTotalCosts(String predicate) {
+        ArrayList<DataPoint<Double, LocalDateTime>> dataPoints = new ArrayList<DataPoint<Double, LocalDateTime>>();
+        ArrayList<DataPoint<Double, LocalDateTime>> clickCosts = calculateClickCosts(predicate);
+        ArrayList<DataPoint<Double, LocalDateTime>> impressionCosts = calculateImpressionCosts(predicate);
+
+        for(int i = 0; i < clickCosts.size(); i++){
+            dataPoints.add(new DataPoint<Double, LocalDateTime>((clickCosts.get(i).getMetric() + impressionCosts.get(i).getMetric()), clickCosts.get(i).getStartTime()));
+        }
+
+        return dataPoints;
+    }
+
+    private ArrayList<DataPoint<Integer, LocalDateTime>> calculateTotalConversions(String predicate) {
+        return null;
+    }
+
+    private  ArrayList<DataPoint<Double, LocalDateTime>> calculateConversionRates(String predicate) {
+        ArrayList<DataPoint<Double, LocalDateTime>> dataPoints = new ArrayList<DataPoint<Double, LocalDateTime>>();
+        ArrayList<DataPoint<Integer, LocalDateTime>> totalConversions = calculateTotalConversions(predicate);
+        ArrayList<DataPoint<Integer, LocalDateTime>> totalClicks = calculateTotalClicks(predicate);
+
+        for(int i = 0; i < totalConversions.size(); i++){
+            dataPoints.add(new DataPoint<Double, LocalDateTime>((double)(totalConversions.get(i).getMetric() / totalClicks.get(i).getMetric()), totalConversions.get(i).getStartTime()));
+        }
+
+        return dataPoints;
+    }
+
+    private ArrayList<DataPoint<Integer, LocalDateTime>> calculateBounces(String predicate) {
+        return null;
+    }
+
+    private ArrayList<DataPoint<Double, LocalDateTime>> calculateBounceRates(String predicate) {
+        ArrayList<DataPoint<Double, LocalDateTime>> dataPoints = new ArrayList<DataPoint<Double, LocalDateTime>>();
+        ArrayList<DataPoint<Integer, LocalDateTime>> bounces = calculateBounces(predicate);
+        ArrayList<DataPoint<Integer, LocalDateTime>> impressionCosts = calculateTotalImpressions(predicate);
+
+        for(int i = 0; i < bounces.size(); i++){
+            dataPoints.add(new DataPoint<Double, LocalDateTime>((double)(bounces.get(i).getMetric() / impressionCosts.get(i).getMetric()), bounces.get(i).getStartTime()));
+        }
+
+        return dataPoints;
+    }
+
+    private ArrayList<DataPoint<Integer, LocalDateTime>> calculateTotalUniques(String predicate) {
+        ArrayList<DataPoint<Integer, LocalDateTime>> dataPoints = new ArrayList<DataPoint<Integer, LocalDateTime>>();
+        ArrayList<Click> clickLog = filterClickLog(predicate);
+        clickLog.sort(getClickComparator());
+
+        LocalDateTime startDateTime = clickLog.get(0).getDateTime();
+        LocalDateTime endDateTime = getEndDateTime(startDateTime);
+        int i = 0;
+        ArrayList<Click> clicks = new ArrayList<Click>();
+        while(clickLog.size() > i){
+            Click click = clickLog.get(i);
+            if(click.getDateTime().isBefore(endDateTime)){
+                clicks.add(click);
+            }
+            else{
+                dataPoints.add(new DataPoint<Integer, LocalDateTime>(campaign.calcUniques(clicks), startDateTime));
+                startDateTime = endDateTime;
+                endDateTime = getEndDateTime(startDateTime);
+                clicks = new ArrayList<Click>();
+                i--;
+            }
+            i++;
+        }
+        return dataPoints;
+    }
+
+    private ArrayList<DataPoint<Double, LocalDateTime>> calculateCTRs(String predicate) {
+        ArrayList<DataPoint<Double, LocalDateTime>> dataPoints = new ArrayList<DataPoint<Double, LocalDateTime>>();
+        ArrayList<DataPoint<Integer, LocalDateTime>> clicks = calculateTotalClicks(predicate);
+        ArrayList<DataPoint<Integer, LocalDateTime>> impressions = calculateTotalImpressions(predicate);
+
+        for(int i = 0; i < clicks.size(); i++){ //TODO add protection when arraylists have different sizes
+            dataPoints.add(new DataPoint<Double, LocalDateTime>((double)(clicks.get(i).getMetric() / impressions.get(i).getMetric()), clicks.get(i).getStartTime()));
+        }
+        return dataPoints;
+    }
+
+    private ArrayList<DataPoint<Double, LocalDateTime>> calculateCPAs(String predicate) {
+        ArrayList<DataPoint<Double, LocalDateTime>> dataPoints = new ArrayList<DataPoint<Double, LocalDateTime>>();
+        ArrayList<DataPoint<Double, LocalDateTime>> totalCosts = calculateTotalCosts(predicate);
+        ArrayList<DataPoint<Integer, LocalDateTime>> totalConversions = calculateTotalConversions(predicate);
+
+        for(int i = 0; i < totalCosts.size(); i++){
+            dataPoints.add(new DataPoint<Double, LocalDateTime>((double)(totalCosts.get(i).getMetric() / totalConversions.get(i).getMetric()), totalCosts.get(i).getStartTime()));
+        }
+
+        return dataPoints;
+    }
+
+    private ArrayList<DataPoint<Double, LocalDateTime>> calculateCPCs(String predicate) {
+        ArrayList<DataPoint<Double, LocalDateTime>> dataPoints = new ArrayList<DataPoint<Double, LocalDateTime>>();
+        ArrayList<Click> clickLog = filterClickLog(predicate);
+        clickLog.sort(getClickComparator());
+
+        LocalDateTime startDateTime = clickLog.get(0).getDateTime();
+        LocalDateTime endDateTime = getEndDateTime(startDateTime);
+        int i = 0;
+        ArrayList<Click> clicks = new ArrayList<Click>();
+        while(clickLog.size() > i){
+            Click click = clickLog.get(i);
+            if(click.getDateTime().isBefore(endDateTime)){
+                clicks.add(click);
+            }
+            else{
+                dataPoints.add(new DataPoint<Double, LocalDateTime>(campaign.calcCPC(clicks), startDateTime));
+                startDateTime = endDateTime;
+                endDateTime = getEndDateTime(startDateTime);
+                clicks = new ArrayList<Click>();
+                i--;
+            }
+            i++;
+        }
+        return dataPoints;
+    }
+
+
+
+    /**
+     * filters for impression log
+     * @param predicate
+     * @return
+     */
+    public ArrayList<Impression> filterImpressionLog(String predicate){
+
+        ArrayList<Impression> impList = new ArrayList();
+        String[] predicates = predicate.split(",");
+
+
+        try {
+
+            Connection conn = campaign.connect();
+
+
+            String sqlString = "SELECT * FROM impressionLog WHERE 1 = 1";
+
+            for(int i = 1; i < predicates.length + 1; i++){
+
+                if(predicates[i - 1].contains(":") && predicates[i - 1].contains("+")){
+                    String[] dates = predicates[i - 1].split(" \\+ ");
+                    System.out.println(dates[0]);
+                    sqlString += " and entry_date > ";
+                    sqlString += "\'" + dates[0] + "\'";
+                    sqlString += " and entry_date < ";
+                    sqlString +=  "\'"  + dates[1] + "\'";
+                }
+                    switch (predicates[i - 1]){
+                    case "Male":
+                        sqlString += " and gender='Male'";
+                        break;
+
+                    case "Female":
+                        sqlString += " and gender='Female'";
+                        break;
+
+                    case "Social Media":
+                        sqlString += " and context='Social Media'";
+                        break;
+
+                    case "News":
+                       sqlString += " and context='News'";
+                        break;
+
+                    case "Shopping":
+                        sqlString += " and context='Shopping'";
+                        break;
+
+                    case "Blog":
+                        sqlString += " and context='Blog'";
+                        break;
+
+                    case "Low":
+                        sqlString += " and income='Low'";
+                        break;
+
+                    case "Medium":
+                        sqlString += " and income='Medium'";
+                        break;
+
+                    case "High":
+                        sqlString += " and income='High'";
+                        break;
+
+                    case "<25":
+                        sqlString += " and age='<25'";
+                        break;
+
+                    case "25-34":
+                        sqlString += " and age='25-34'";
+                        break;
+
+                    case "35-44":
+                        sqlString += " and age='35-44'";
+                        break;
+
+                    case "44-54":
+                        sqlString += " and age='45-54'";
+                        break;
+
+                    case ">54":
+                        sqlString += " and age='>54'";
+                        break;
+
+                }
+
+
+            }
+
+            System.out.println(sqlString);
+            PreparedStatement staten = conn.prepareStatement(sqlString);
+            ResultSet rs = staten.executeQuery();
+
+            while(rs.next()){
+                DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.0");
+                LocalDateTime dateTime = LocalDateTime.parse(rs.getString("entry_date"),formatter);
+                Impression imp = new Impression(dateTime, rs.getString("id"), rs.getString("gender"), rs.getString("age"), rs.getString("income"), rs.getString("context"), rs.getFloat("impression_cost"));
+                impList.add(imp);
+            }
+
+
+
+        }catch(SQLException e){
+           e.printStackTrace();
+        }
+
+
+        return impList;
+    }
+
+
+    /**
+     * filter for the click log
+     * @param predicate
+     * @return
+     */
+
+    public ArrayList<Click> filterClickLog(String predicate){
+
+        ArrayList<Click> clickList = new ArrayList<>();
+        String[] predicates = predicate.split(",");
+
+
+        try {
+            Connection conn = campaign.connect();
+            String sqlString = "SELECT * FROM (SELECT  clickLog.entry_date, clickLog.id, clickLog.click_cost, impressionLog.age, impressionLog.context, impressionLog.gender, impressionLog.income, impressionLog.impression_cost  FROM clickLog INNER JOIN  impressionLog ON impressionLog.id = clickLog.id  GROUP BY  clickLog.id, clickLog.entry_date) WHERE 1 = 1 ";
+
+            for(int i = 1; i < predicates.length + 1; i++) {
+
+                if(predicates[i - 1].contains(":") && predicates[i - 1].contains("+")){
+                    String[] dates = predicates[i - 1].split(" \\+ ");
+                    System.out.println(dates[0]);
+                    sqlString += " and entry_date > ";
+                    sqlString += "\'" + dates[0] + "\'";
+                    sqlString += " and entry_date < ";
+                    sqlString +=  "\'"  + dates[1] + "\'";
+                }
+                switch (predicates[i - 1]) {
+                    case "Male":
+                        sqlString += " and gender='Male'";
+                        break;
+
+                    case "Female":
+                        sqlString += " and gender='Female'";
+                        break;
+
+                    case "Social Media":
+                        sqlString += " and context='Social Media'";
+                        break;
+
+                    case "News":
+                        sqlString += " and context='News'";
+                        break;
+
+                    case "Shopping":
+                        sqlString += " and context='Shopping'";
+                        break;
+
+                    case "Blog":
+                        sqlString += " and context='Blog'";
+                        break;
+
+                    case "Low":
+                        sqlString += " and income='Low'";
+                        break;
+
+                    case "Medium":
+                        sqlString += " and income='Medium'";
+                        break;
+
+                    case "High":
+                        sqlString += " and income='High'";
+                        break;
+
+                    case "<25":
+                        sqlString += " and age='<25'";
+                        break;
+
+                    case "25-34":
+                        sqlString += " and age='25-34'";
+                        break;
+
+                    case "35-44":
+                        sqlString += " and age='35-44'";
+                        break;
+
+                    case "44-54":
+                        sqlString += " and age='45-54'";
+                        break;
+
+                    case ">54":
+                        sqlString += " and age='>54'";
+                        break;
+
+
+                }
+
+
+                PreparedStatement staten = conn.prepareStatement(sqlString);
+                ResultSet rs = staten.executeQuery();
+
+
+                while (rs.next()) {
+                    DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.0");
+                    LocalDateTime dateTime = LocalDateTime.parse(rs.getString("entry_date"), formatter);
+                    Click click = new Click(dateTime, rs.getString("id"), rs.getFloat("click_cost"));
+                    clickList.add(click);
+                }
+            }
+
+        }catch(SQLException e){
+            System.out.println(e.getErrorCode());
+        }
+
+        return clickList;
+    }
+
+
+    /**
+     * filter for the Server database
+     * @param predicate
+     * @return
+     */
+    public ArrayList<ServerEntry> filterServerLog(String predicate){
+
+        ArrayList<ServerEntry> entryList = new ArrayList<>();
+        String[] predicates = predicate.split(",");
+
+        try{
+            Connection conn = campaign.connect();
+            String sqlString = "SELECT * FROM (SELECT  clickLog.id, clickLog.click_cost, clickLog.entry_date, serverLog.conversion, serverLog.pagesViewed, serverLog.exit_date  FROM serverLog INNER JOIN  clickLog ON clickLog.id = serverLog.id  GROUP BY  serverLog.id, serverLog.entry_date)  WHERE 1 = 1 ";
+
+
+
+            for(int i = 1; i < predicates.length + 1  ; i++) {
+
+                if(predicates[i - 1].contains(":") && predicates[i - 1].contains("+")){
+                    String[] dates = predicates[i - 1].split(" \\+ ");
+                    System.out.println(dates[0]);
+                    sqlString += " and entry_date > ";
+                    sqlString += "\'" + dates[0] + "\'";
+                    sqlString += " and entry_date < ";
+                    sqlString +=  "\'"  + dates[1] + "\'";
+                }
+                switch (predicates[i - 1]) {
+                    case "Male":
+                        sqlString += " and gender='Male'";
+                        break;
+
+                    case "Female":
+                        sqlString += " and gender='Female'";
+                        break;
+
+                    case "Social Media":
+                        sqlString += " and context='Social Media'";
+                        break;
+
+                    case "News":
+                        sqlString += " and context='News'";
+                        break;
+
+                    case "Shopping":
+                        sqlString += " and context='Shopping'";
+                        break;
+
+                    case "Blog":
+                        sqlString += " and context='Blog'";
+                        break;
+
+                    case "Low":
+                        sqlString += " and income='Low'";
+                        break;
+
+                    case "Medium":
+                        sqlString += " and income='Medium'";
+                        break;
+
+                    case "High":
+                        sqlString += " and income='High'";
+                        break;
+
+                    case "<25":
+                        sqlString += " and age='<25'";
+                        break;
+
+                    case "25-34":
+                        sqlString += " and age='25-34'";
+                        break;
+
+                    case "35-44":
+                        sqlString += " and age='35-44'";
+                        break;
+
+                    case "44-54":
+                        sqlString += " and age='45-54'";
+                        break;
+
+                    case ">54":
+                        sqlString += " and age='>54'";
+                        break;
+
+                    case "No":
+                        sqlString += " and conversion='No'";
+                        break;
+
+                    case "Yes":
+                        sqlString += " and conversion='Yes'";
+                        break;
+
+                    case "pagesViewed":
+                        sqlString += " and pagesViewed <";
+                        sqlString += predicates[i];
+                        break;
+
+
+                }
+            }
+
+
+            System.out.println(sqlString);
+            PreparedStatement staten = conn.prepareStatement(sqlString);
+            ResultSet rs = staten.executeQuery();
+
+            while(rs.next()){
+                DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.0");
+                LocalDateTime entry_date = LocalDateTime.parse(rs.getString("entry_date"),formatter);
+                LocalDateTime exit_date = null;
+                if(rs.getString("exit_date") != null){
+                     exit_date = LocalDateTime.parse(rs.getString("exit_date"), formatter);
+                }
+                ServerEntry entry = new ServerEntry(entry_date, rs.getString("id"), exit_date, rs.getInt("pagesViewed"), rs.getString("conversion"));
+                entryList.add(entry);
+            }
+
+        }catch(SQLException e){
+            System.out.println(e);
+        }
+
+        return entryList;
+    }
+
+
+    public ArrayList<DataPoint> getDataPoints(){ return dataPoints; }
+
+    @Override
+    public void addObserver(Observer observer) {
+        observers.add(observer);
+    }
+
+    /**
+     * Observers should respond to this by calling getDataPoints()
+     */
+    private void triggerUpdate() {
+        for (Observer observer : observers) {
+            if(observer==null){
+
+            }
+            else{
+                observer.observableChanged(this);
+            }
+        }
+    }
+
+    private Comparator<Click> getClickComparator(){
+        Comparator<Click> dateComparator = new Comparator<Click>(){
+
+            @Override
+            public int compare(Click c1, Click c2) {
+                return c1.getDateTime().compareTo(c2.getDateTime());
+            }
+        };
+        return dateComparator;
+    }
+}
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