What’s the difference between session.save() and session.saveOrUpdate() methods in hibernate
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What’s the difference between session.save() and session.saveOrUpdate() methods in hibernate?
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- This is sample data from my JSON file: "firstName" : "Juan","middleName" : "Dela""lastName" : "Cruz","username" : "JuanDelaCruz","password" : "1234", I already have a JAVA GUI that displays the data of each user in a table format. I need the part of my program that will allow the server to either accept or reject the user. If the user is accepted, the credentials of the user will be saved in another JSON file. If rejected, the server will do nothing.Your company is doing some data cleanup, and notices that the email list of all users has been getting outdated. For one, there are some users with repeat email addresses, and some of the email accounts no longer exist. Your job is to create a series of methods that can purge some of the old data from the existing email list. Create static methods in the DataPurge class that can do the following: removeDuplicates This method takes an email list, and removes the duplicate email values. It also prints to the console which duplicate emails have been removed. removeAOL This method removes all email addresses from a list that are from aol.com. It notifies the user which email addresses are being removed as well. containsOnlyEmails This method returns true if all of the data in the email list is actually an email address. We will define something as an email address if it contains the characters @ and . Test your methods out in the DataPurgeTester file. You don’t have to change anything…Project One (1): Image 2 Imagguil@compute-/private/courses/es2211/W21/assignments/asn3/p. fimagguilecompute projijs ./proji Enter values for Layers, Rows, Columns (elements in each row): 234 Original Matrix Layer 1 (1) 71 72 57 48 49 (2 ) 99 layers 57 ( 3 ) 12 58 57 18 23 prompt Layer 2 (1) se ( 2) 30 (3) 94 77 83 12 99 90 42 84 80 96 row number Enter values for Layers, Rows, Columns (elements in each row): e e e FINISHED (Imagguilecompute projijs (Imagguilecompute projijs Code for generating random integers: int x, m = 100; time_t t; srand ( (unsigned) time (st)); x = (rand () % m) +1; where: time_t is defined in the C library of time.h m is range. In this case 100 signifies the range of 0 to 99, so we add I to the result. (note: m will vary in the second project to match to the matrix size.)
- I NEED BulbGUI.java Using JAVA, Create a File Menu in your GUI Add a file menu to your BulbGUI with options to open any file for reading (and displaying the file as in Project 2), and one to Quit the program. You will need a FileMenuHandler class to handle the events from the FileMenu. Be sure to use getAbsolutePath() when getting the file from the JFileChooser, not getName(). Handle Exceptions Create an exception called IllegalBulbException (by extending IlegalArgumentException as shown in the lecture) and have the constructor of the Bulb throw it. For our purposes, a Bulb is illegal if the wattage is less than 5. Use a try/catch statement to catch this exception in your program, and display the erroneous Bulbs to the console (do not put them in the ArrayList). Use ArrayLists Use an ArrayList to store the unsorted Bulbs. For this project, display only the unsorted bulbs in the GUI. Input File Phillips,1237DF2,100,1200 Phillips,546AHH7,75,900 Phillips,875RTM6,4,750 Cree,14573,65,800…Create an object of MessageDigest class using the java.security.MessageDigest library. Initialize the object with your selection for an appropriate algorithm cipher. Use the digest() method of the class to generate a hash value of byte type from the unique data string (your first and last name). Convert the hash value to hex using the bytesToHex function. Create a RESTFul route using the @RequestMapping method to generate and return the required information, which includes the hash value, to the web browser. Here, is the code to edit package com.snhu.sslserver; import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController; @SpringBootApplicationpublic class ServerApplication { public static void main(String[] args) { SpringApplication.run(ServerApplication.class, args); } }…Scenario: You have been tasked with building a URL file validator for a web crawler. A web crawler is an application that fetches a web page, extracts the URLs present in that page, and then recursively fetches new pages using the extracted URLs. The end goal of a web crawler is to collect text data, images, or other resources present in order to validate resource URLs or hyperlinks on a page. URL validators can be useful to validate if the extracted URL is a valid resource to fetch. In this scenario, you will build a URL validator that checks for supported protocols and file types.
- How does this method cause memory leaks? How do I make it multi-thread safe? I have this JUnit test method that checks if my method is working. What it does is to. Inherit @Before and @After methods from BaseTest Since for every class, a session is created before, use it for ServiceTest.testUpdate() when we have to use session.save. ----------------------------------------------------------------------------------------------------------------------- public class BaseTest{ @Autowired protected SessionFactory sessionFactory; protected Session session; @Before public void createSession() { session = sessionFactory.openSession(); } @After public void closeSession(){ if (session != null) { session.flush(); session.close(); } } } public class ServiceTest extends BaseTest{ @Autowired private FoodService foodService; @Test public void testUpdate() { Food food= new Food("Japanese", "Ramen"); session.save(student); int id = (int) session.getIdentifier(student); session.flush();…Our users do not want to have to re-enter the price levels each time the app starts. Therefore, we need to save the price levels to a file on disk – called levelsFile - and populate the levelsList with the file’s items when the app starts. Also, every time the user manipulates the values in levelsList, levelsFile needs to be updated accordingly. The easiest way is not to update the file, but to simply override it (create a new file) with the new values in levelsList (each time the user manipulates items in the list). Two new methods need to be created in the PriceChecker class. They are readLevelsFromFile() and writeLevelsToFile(). And then the Main Code Section must also be updated to use these methods in the object. Note: The changes required to the Main Code Section are supplied on the next slide, but you need to complete the skeleton code of the two newly mentioned methods (supplied on subsequent slides). (code to work on)instructions in pictures class PriceChecker(): #…What’s the use of session.lock() in hibernate?
- The file phonenumbers.txt is in the phone directory (a subdirectory of the /contacts directory). What is the complete path to phonenumbers.txt?What is the difference between "for", "while" & "do-while" Loops? When should each be used? For this post and all future posts, make a reply to my initial post. Be sure to include the code snippet within the response (do not post as a separate file).What is the purpose of hibernate's session.lock() function?