model.Post_store.java Source code

Introduction

Here is the source code for model.Post_store.java

Source

/*
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 */
package model;

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

/**
 *
 * @author Sahan
 */
public class Post_store {

    public static String root = "";

    public static void main(String[] args) {
        add_post("test post 1", "this is the \n content of \n post 1.");
        show_post(1);
        addcomment("Hello my comment", 1);
        show_post(1);
        add_post("test post 2", "this is the \n content of \n post 2.");

    }

    public static void add_post(String title, String content) {

        JSONObject obj = new JSONObject();
        obj.put("title", title);
        obj.put("content", content);

        JSONArray comments = new JSONArray();

        obj.put("comments", comments);

        JSONArray UA_comments = new JSONArray();

        obj.put("UA_comments", UA_comments);

        int lastid = getlastid();

        obj.put("id", lastid);

        try (FileWriter file = new FileWriter(root + "posts/" + lastid + ".json");) {
            file.write(obj.toJSONString());
            file.flush();
            file.close();

        } catch (IOException e) {
            System.out.println(e);
        }

        lastid++;

        setlastid(lastid);

        //System.out.print(obj);

    }

    public static int getlastid() {
        JSONParser parser = new JSONParser();
        int lastid = 1;
        try {

            Object idObj = parser.parse(new FileReader(root + "posts/lastid.json"));

            JSONObject jsonObject = (JSONObject) idObj;

            String slastid = jsonObject.get("lastid").toString();
            lastid = Integer.parseInt(slastid);

            //System.out.println(lastid);

        } catch (FileNotFoundException e) {
            JSONObject newIdObj = new JSONObject();
            lastid = 1;
            newIdObj.put("lastid", lastid);

            try (FileWriter file = new FileWriter(root + "posts/lastid.json");) {
                file.write(newIdObj.toJSONString());
                file.flush();
                file.close();

            } catch (IOException ex) {
                System.out.println(e);
            }
        } catch (IOException e) {
            System.out.println(e);
        } catch (ParseException e) {
            System.out.println(e);
        }

        return lastid;
    }

    public static void setlastid(int lastid) {

        JSONObject obj = new JSONObject();
        obj.put("lastid", lastid);
        try (FileWriter file = new FileWriter(root + "posts/lastid.json");) {
            file.write(obj.toJSONString());
            file.flush();
            file.close();

        } catch (IOException ex) {
            System.out.println(ex);
        }
    }

    public static String getposttitle(int id) {

        JSONParser parser = new JSONParser();
        String title = "";

        try {

            Object obj = parser.parse(new FileReader(root + "posts/" + id + ".json"));

            JSONObject jsonObject = (JSONObject) obj;

            title = (String) jsonObject.get("title");
            //System.out.println(title);

        } catch (FileNotFoundException e) {
            System.out.println(e);
        } catch (IOException e) {
            System.out.println(e);
        } catch (ParseException e) {
            System.out.println(e);
        }

        return title;

    }

    public static String getpostcontent(int id) {

        JSONParser parser = new JSONParser();
        String content = "";

        try {

            Object obj = parser.parse(new FileReader(root + "posts/" + id + ".json"));

            JSONObject jsonObject = (JSONObject) obj;

            content = (String) jsonObject.get("content");
            //System.out.println(content);

        } catch (FileNotFoundException e) {
            System.out.println(e);
        } catch (IOException e) {
            System.out.println(e);
        } catch (ParseException e) {
            System.out.println(e);
        }

        return content;

    }

    public static List<String> getpostcomments(int id) {

        JSONParser parser = new JSONParser();
        List<String> comments = new ArrayList<>();

        try {

            Object obj = parser.parse(new FileReader(root + "posts/" + id + ".json"));

            JSONObject jsonObject = (JSONObject) obj;

            JSONArray Jcomments = (JSONArray) jsonObject.get("comments");
            if (Jcomments != null) {
                Iterator<String> iterator = Jcomments.iterator();
                while (iterator.hasNext()) {
                    comments.add(iterator.next());
                }
            }

        } catch (FileNotFoundException e) {
            System.out.println(e);
        } catch (IOException e) {
            System.out.println(e);
        } catch (ParseException e) {
            System.out.println(e);
        }

        return comments;

    }

    public static List<String> getpostUAcomments(int id) {

        JSONParser parser = new JSONParser();
        List<String> UA_comments = new ArrayList<>();

        try {

            Object obj = parser.parse(new FileReader(root + "posts/" + id + ".json"));

            JSONObject jsonObject = (JSONObject) obj;

            JSONArray JUAcomments = (JSONArray) jsonObject.get("UA_comments");
            if (JUAcomments != null) {
                Iterator<String> iterator = JUAcomments.iterator();
                while (iterator.hasNext()) {
                    UA_comments.add(iterator.next());
                }
            }

        } catch (FileNotFoundException e) {
            System.out.println(e);
        } catch (IOException e) {
            System.out.println(e);
        } catch (ParseException e) {
            System.out.println(e);
        }

        return UA_comments;

    }

    public static void addcomment(String comment, int id) {
        String title = getposttitle(id);
        String content = getpostcontent(id);
        List<String> comments = getpostcomments(id);
        List<String> UA_comments = getpostUAcomments(id);

        comments.add(comment);

        update_post(title, content, comments, UA_comments, id);
    }

    public static void addUAcomment(String comment, int id) {
        String title = getposttitle(id);
        String content = getpostcontent(id);
        List<String> comments = getpostcomments(id);
        List<String> UA_comments = getpostUAcomments(id);

        UA_comments.add(comment);

        update_post(title, content, comments, UA_comments, id);
    }

    public static void update_post(String title, String content, List<String> comments, List<String> UA_comments,
            int id) {
        JSONObject obj = new JSONObject();
        obj.put("title", title);
        obj.put("content", content);

        JSONArray Jcomments = new JSONArray();
        for (String i : comments) {
            Jcomments.add(i);
        }
        obj.put("comments", comments);

        JSONArray JUA_comments = new JSONArray();
        for (String i : UA_comments) {
            JUA_comments.add(i);
        }
        obj.put("UA_comments", UA_comments);

        try (FileWriter file = new FileWriter(root + "posts/" + id + ".json");) {
            file.write(obj.toJSONString());
            file.flush();
            file.close();

        } catch (IOException e) {
            System.out.println(e);
        }

        //System.out.print(obj);
    }

    public static void show_post(int id) {
        String title = getposttitle(id);
        String content = getpostcontent(id);
        List<String> comments = getpostcomments(id);

        System.out.println(title);
        System.out.println(content);
        for (String i : comments) {
            System.out.println(i);
        }
    }
}