1 00:00:01,020 --> 00:00:04,600 Hi there now it's time to extend our project. 2 00:00:04,620 --> 00:00:06,610 It's been a while since we have extended it. 3 00:00:06,720 --> 00:00:12,840 The last extension was in the I wrote chapter so there we have extended the project to read the data 4 00:00:12,930 --> 00:00:14,470 from X Files. 5 00:00:14,610 --> 00:00:19,530 Before that we were reading the data from this class called us data store. 6 00:00:19,530 --> 00:00:25,140 And then after we have learned some of the concepts in the Iowa chapter we have changed that in order 7 00:00:25,140 --> 00:00:27,010 to read that it Off-Ramp ex-Vice. 8 00:00:27,130 --> 00:00:27,400 OK. 9 00:00:27,450 --> 00:00:32,790 The data is still stored in data store but the data is loaded from X Files. 10 00:00:32,850 --> 00:00:36,620 Since then we have learned about data structures and also genetics. 11 00:00:36,630 --> 00:00:39,010 So let's go ahead and put that into use. 12 00:00:39,210 --> 00:00:39,780 OK. 13 00:00:39,780 --> 00:00:42,390 So it's going to be a very simple extension. 14 00:00:42,390 --> 00:00:50,250 So far the only data that we are using was are using single dimensional iron to be arrays. 15 00:00:50,280 --> 00:00:52,110 So now we're going to change that. 16 00:00:52,270 --> 00:00:52,490 OK. 17 00:00:52,500 --> 00:00:54,590 Because our sort of very inflexible. 18 00:00:54,810 --> 00:00:58,780 We need to know the size of the Army during the creation time. 19 00:00:58,920 --> 00:01:03,280 So that's very inflexible and our eyes are also not auto extendable. 20 00:01:03,390 --> 00:01:04,040 We know that. 21 00:01:04,150 --> 00:01:04,570 OK. 22 00:01:04,740 --> 00:01:11,500 So let's go ahead and change that and the conduction frame update us or just give us a lot of flexibility 23 00:01:11,850 --> 00:01:13,910 so we don't have those limitations anymore. 24 00:01:13,950 --> 00:01:18,150 The limitations that are is do us so we are going to do that. 25 00:01:18,150 --> 00:01:21,720 We are simply going to use the collection framework data structures. 26 00:01:22,170 --> 00:01:23,770 Okay so let's go ahead and do that. 27 00:01:24,000 --> 00:01:27,850 But before that let's just do a very quick recap of the project. 28 00:01:28,080 --> 00:01:33,510 So we know that the project is that application it's a social bookmarking with opposition where users 29 00:01:33,540 --> 00:01:41,100 can bookmark their favorite bookmarks and other features and glore to make certain bookmarks as kid 30 00:01:41,100 --> 00:01:44,310 friendly but much so that only kids can use them. 31 00:01:44,560 --> 00:01:45,090 OK. 32 00:01:45,180 --> 00:01:52,230 And that can be done by special type of users called editors and editors on into the future was to also 33 00:01:52,230 --> 00:01:56,920 share certain bookmarks with a third party website and that was also another feature. 34 00:01:57,090 --> 00:02:05,060 And we implemented certain Jela features when we tried to incorporate that right and center to the application 35 00:02:05,080 --> 00:02:05,420 . 36 00:02:05,670 --> 00:02:08,450 So we followed the MBC design back then. 37 00:02:08,790 --> 00:02:15,810 So the core business logic was we were able to implement it but for the view part we have used a dolphin 38 00:02:15,900 --> 00:02:20,210 we call it as good or Java and it's similar to the browser. 39 00:02:20,270 --> 00:02:20,950 OK. 40 00:02:21,030 --> 00:02:25,880 And then for the data base but be how you use the data store Barra's so that it is stored in data stored 41 00:02:26,330 --> 00:02:28,770 on for much of the remaining business logic. 42 00:02:28,840 --> 00:02:30,970 What we hope the business logic. 43 00:02:30,990 --> 00:02:34,100 So that is already quoted in Java and that is fine. 44 00:02:34,290 --> 00:02:38,970 It's just there for the view under the dust or part B how similar occurred using Golan Heights. 45 00:02:39,010 --> 00:02:45,660 So later I might add a new chapter at the IGN and then I might cover some of the technologies that we 46 00:02:45,660 --> 00:02:47,670 can use for implementing view. 47 00:02:47,830 --> 00:02:54,990 And also for implement indeed Austral like the Maya security and also to color some of the JEDEC concepts 48 00:02:55,080 --> 00:02:56,050 which can be used to do. 49 00:02:56,070 --> 00:02:59,000 He did offer them that he duster from the database. 50 00:02:59,060 --> 00:03:02,300 OK but I'm not sure I'll be able to do it. 51 00:03:02,400 --> 00:03:06,690 So I would try my best to do that after I'm done with some of the other stuff. 52 00:03:06,850 --> 00:03:08,220 Adding some of the other stuff. 53 00:03:08,250 --> 00:03:09,950 And the last guess if I can on that. 54 00:03:10,050 --> 00:03:13,370 I think you can enroll in other courses that are some other course. 55 00:03:13,370 --> 00:03:17,570 Those are very good courses on Java eat and also on my SU fuel. 56 00:03:17,730 --> 00:03:19,970 So you can just enroll for those courses. 57 00:03:19,980 --> 00:03:25,320 Those are pretty short courses and you can when you are doing those courses you can extend this project 58 00:03:25,680 --> 00:03:29,040 in order to implement a viewport on Also that database back. 59 00:03:29,100 --> 00:03:30,320 So you can always do that. 60 00:03:30,480 --> 00:03:35,400 But I will try my best to provide some kind of a basic introduction to those technologies and probably 61 00:03:35,400 --> 00:03:40,850 cover that in this goes much since this is a it's it's a Java course purely gello course. 62 00:03:41,040 --> 00:03:44,790 So the core part is definitely taken care of and the project options. 63 00:03:44,970 --> 00:03:46,400 It's just the missing pieces. 64 00:03:46,400 --> 00:03:53,070 RW and the database Boch which are simulated here using these dolphins but they we try our best to also 65 00:03:53,230 --> 00:03:59,220 those the worst case you can actually enroll in other courses and extend this project while you're learning 66 00:03:59,220 --> 00:04:00,530 those concepts. 67 00:04:00,570 --> 00:04:03,310 So let's go ahead and get started here launched our Djala. 68 00:04:03,510 --> 00:04:08,880 I simply think of it as a web server on Nixon built on just application on good or Java is a viewport 69 00:04:08,880 --> 00:04:09,030 . 70 00:04:09,040 --> 00:04:10,520 It also is that good ideas. 71 00:04:10,680 --> 00:04:13,380 So let's go ahead and look at launch nodular. 72 00:04:13,770 --> 00:04:15,620 Sophie scroll down. 73 00:04:15,930 --> 00:04:21,920 So here is the main method and it isn't working load data on no database to the data. 74 00:04:22,140 --> 00:04:22,520 OK. 75 00:04:22,530 --> 00:04:28,770 And for that it is using DUDAS store and it isn't working this static function and it is loading users 76 00:04:28,840 --> 00:04:30,490 ramblings more recent books. 77 00:04:30,520 --> 00:04:31,140 OK. 78 00:04:31,200 --> 00:04:34,270 And each of them loads read off from their text file. 79 00:04:34,350 --> 00:04:35,970 Ok so this is node users. 80 00:04:36,210 --> 00:04:38,540 So let's go ahead and change this. 81 00:04:38,880 --> 00:04:39,180 OK. 82 00:04:39,180 --> 00:04:40,830 So let's go ahead and make it. 83 00:04:41,100 --> 00:04:42,580 Here is a string array. 84 00:04:42,600 --> 00:04:46,720 So let's make it so the data is going to be stored in the string array. 85 00:04:46,980 --> 00:04:49,380 So let's simply make it a list of strings 86 00:04:55,050 --> 00:04:59,360 choose Obama notation on control Chiv. 87 00:04:59,640 --> 00:05:02,730 Oh. 88 00:05:03,750 --> 00:05:05,540 So it is a list of strings. 89 00:05:05,550 --> 00:05:07,110 So this is the parameterised type. 90 00:05:07,110 --> 00:05:11,290 We know that now that's going to I want to read. 91 00:05:11,970 --> 00:05:13,250 And it's also changed this 92 00:05:16,080 --> 00:05:17,550 day. 93 00:05:18,120 --> 00:05:24,140 And here we don't need this column anymore because we are not going to use an ID. 94 00:05:24,670 --> 00:05:32,210 So does keeping track of the index so let's ecstasy. 95 00:05:36,360 --> 00:05:38,600 That's it. 96 00:05:38,590 --> 00:05:45,030 And let's go back and the same thing happens here. 97 00:05:45,570 --> 00:05:48,950 Oh score no users so users. 98 00:05:48,950 --> 00:05:51,510 It's also an ID so we can also change that. 99 00:05:51,850 --> 00:05:53,850 So click on doc. 100 00:05:53,970 --> 00:05:55,560 So here is users. 101 00:05:55,770 --> 00:06:03,780 So that just go ahead and make good on this user. 102 00:06:03,780 --> 00:06:09,190 In fact you can make a collection of rules and also because one option is even more generic. 103 00:06:09,420 --> 00:06:12,340 But Critchley read like Doc no. 104 00:06:13,740 --> 00:06:18,990 Now we don't need any of this so it can be a fixed size. 105 00:06:19,050 --> 00:06:21,270 It is also Ahto extendable. 106 00:06:21,660 --> 00:06:27,060 So let's go back here we are. 107 00:06:28,200 --> 00:06:36,180 So we are watching the data read will read the rest of the file and we need to store the data here. 108 00:06:36,270 --> 00:06:37,860 Here we are adding it. 109 00:06:38,400 --> 00:06:43,290 OK we are we are getting the data that we are parsing the data and then we are creating an instance 110 00:06:43,290 --> 00:06:46,700 of user and we are storing it in this user's ID. 111 00:06:46,980 --> 00:06:47,270 OK. 112 00:06:47,270 --> 00:06:51,270 Now it's going to be our users and users list. 113 00:06:51,530 --> 00:06:51,820 OK. 114 00:06:51,860 --> 00:06:55,020 And this is on them but it is just it's keeping track of the index. 115 00:06:55,020 --> 00:06:59,620 So let's just go ahead and remove that game because you're not using it. 116 00:06:59,850 --> 00:07:06,780 So let's also remove this and let's just call that user user 117 00:07:10,680 --> 00:07:14,590 users not add up. 118 00:07:15,270 --> 00:07:16,640 So you're done with this matter. 119 00:07:16,710 --> 00:07:19,550 So it's harder to users. 120 00:07:19,830 --> 00:07:24,820 And we also have these other methods like web links or Lord rubbings Lord movies I'm dumb as a listen 121 00:07:24,850 --> 00:07:27,620 just go out and mix similar kind of changes. 122 00:07:27,660 --> 00:07:35,370 So let's just take the seam in here and Oppy it here no longer. 123 00:07:35,370 --> 00:07:38,410 We have the string arm and that's it. 124 00:07:38,430 --> 00:07:41,130 And the same thing goes here. 125 00:07:41,600 --> 00:07:41,870 OK. 126 00:07:41,880 --> 00:07:46,950 Here we are using mops which is a cootie mention NRD a daisy right highlight the. 127 00:07:46,980 --> 00:07:48,810 We are going to restore the gambling's. 128 00:07:49,080 --> 00:07:52,480 OK ramblings and this is column number is. 129 00:07:52,490 --> 00:07:55,470 He is of keeping track of the column numbers. 130 00:07:55,590 --> 00:07:56,650 So it's a truly array. 131 00:07:56,730 --> 00:08:00,870 And in the zero Truglio sauteing doublings and in the first row I think we are storing movies on in 132 00:08:00,870 --> 00:08:02,750 the second we are storing books. 133 00:08:02,790 --> 00:08:03,300 OK. 134 00:08:03,420 --> 00:08:10,310 So instead of a 2D area that's used and list off lest we get a list offer list. 135 00:08:10,380 --> 00:08:14,130 So let me go back here to bookmarks. 136 00:08:14,250 --> 00:08:25,380 So let's change this to the list and this is how another list so that this Nestor's this girl store 137 00:08:25,460 --> 00:08:26,800 individually book. 138 00:08:26,970 --> 00:08:32,820 So does you do it you be able to store a list which will how only rumblings had the fust position be 139 00:08:32,810 --> 00:08:39,460 able to store a list which really how on the movies on a second the list will start on the books. 140 00:08:39,630 --> 00:08:42,640 So it just resembles a goody and deore. 141 00:08:42,960 --> 00:08:53,560 So let's change this also to our list and we don't need to specify dentata things there. 142 00:08:53,580 --> 00:08:56,240 I'm a tradition we'll take get off Goc. 143 00:08:56,250 --> 00:09:00,620 Now let's go back and sorry. 144 00:09:00,660 --> 00:09:04,900 This needs to be a bookmark or a string. 145 00:09:05,010 --> 00:09:05,860 Right. 146 00:09:05,880 --> 00:09:13,950 This needs to be a bookmark and this internal list can store iterable or any of the bookmarks. 147 00:09:13,950 --> 00:09:14,570 OK. 148 00:09:14,920 --> 00:09:15,170 OK. 149 00:09:15,180 --> 00:09:20,370 So the so the zero at that moment is a list of bookmark trusted images a list of bookmark on second 150 00:09:20,370 --> 00:09:21,740 is also on this stuff bookmark. 151 00:09:21,840 --> 00:09:22,110 OK. 152 00:09:22,110 --> 00:09:28,490 And each of those of us can store a weblink or they can store a movie or a book. 153 00:09:28,730 --> 00:09:30,040 OK so let's go back. 154 00:09:30,040 --> 00:09:33,770 Here are the blanks. 155 00:09:34,230 --> 00:09:34,410 And 156 00:09:43,350 --> 00:09:44,980 so we need to remove this 157 00:09:46,270 --> 00:09:54,160 . 158 00:09:56,520 --> 00:10:02,230 See this bookmark reduced. 159 00:10:05,500 --> 00:10:07,670 OK so that's this little part of the book. 160 00:10:07,670 --> 00:10:10,200 Mark resistible how all of the blanks. 161 00:10:10,380 --> 00:10:19,560 Now we need to add it to the bookmarks data structure on the grill get hired here. 162 00:10:19,590 --> 00:10:19,920 OK. 163 00:10:19,950 --> 00:10:22,150 So that's the zero at that moment. 164 00:10:22,230 --> 00:10:27,090 Next year you need to do the same here for movies. 165 00:10:27,450 --> 00:10:35,650 When it's go down you have to replace once again the ceiling step and actually extremal this 166 00:10:39,500 --> 00:10:40,860 Scobie. 167 00:10:40,860 --> 00:10:41,310 This 168 00:10:56,670 --> 00:11:01,920 needs to be assigned here and this needs to go outside of the front low 169 00:11:07,580 --> 00:11:08,520 scoring here 170 00:11:08,540 --> 00:11:14,350 . 171 00:11:21,360 --> 00:11:25,860 So that's the movies on the same thing for the books also. 172 00:11:26,280 --> 00:11:29,280 So here we are remote this 173 00:11:29,280 --> 00:12:04,560 . 174 00:12:11,220 --> 00:12:15,700 So those are the road methods and we are also returning. 175 00:12:15,930 --> 00:12:17,300 There are some guitars for that. 176 00:12:17,370 --> 00:12:19,630 So let's also do that change here. 177 00:12:19,830 --> 00:12:24,390 So this is going to return this you get bookmarks. 178 00:12:24,470 --> 00:12:32,430 So certainly the data structures and this one is going to get users here should get it done this way 179 00:12:32,470 --> 00:12:33,850 . 180 00:12:33,930 --> 00:12:37,630 So that said and we don't need any of these any more. 181 00:12:37,920 --> 00:12:44,950 So that may also remove that game. 182 00:12:45,540 --> 00:12:48,490 So this this find this can be taken care of later. 183 00:12:48,900 --> 00:12:50,010 So that's the thing. 184 00:12:50,010 --> 00:12:51,530 So let me just stop it here. 185 00:12:51,540 --> 00:12:54,310 Will this change with the changes that be made in the store. 186 00:12:54,480 --> 00:13:00,180 So in the next lesson we will come back and maybe make some changes in the viewed or Djala and probably 187 00:13:00,180 --> 00:13:03,060 in launch not July and few other files. 188 00:13:03,330 --> 00:13:03,620 OK. 189 00:13:03,630 --> 00:13:07,230 Because of the changes that we made we will get some competition out of there. 190 00:13:07,470 --> 00:13:08,650 So we are going to fix that. 191 00:13:08,670 --> 00:13:09,790 And the next lesson. 192 00:13:09,940 --> 00:13:12,150 Okay okay then see you in the next Hessen