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Edited: Apr 26, 2023

Hibernate Save Or Update Return Id [TOP]

How to Get the ID of a Saved or Updated Entity in Hibernate

Hibernate is a popular framework for object-relational mapping (ORM) that allows developers to work with Java objects and database tables in a convenient and efficient way. One of the common tasks that Hibernate users need to perform is to save or update an entity in the database and get its ID (primary key) value. In this article, we will explore how to do this using different methods of the Hibernate Session interface.

Using Session.save()

The save() method is used to make a transient (new) entity persistent by associating it with a Session. Before persisting the entity, it assigns a generated identifier to the ID field. The save() method returns the generated identifier so it has to immediately execute the SQL INSERT statement (it does not matter if we are inside or outside of a transaction) because identifiers are generated by the database during the INSERT query execution only[^2^].

For example, if we have an EmployeeEntity class mapped to an Employee table with an ID field as the primary key, we can use the save() method as follows:

```java

EmployeeEntity employee = new EmployeeEntity();

employee.setEmail(\"demo-user@email.com\");

employee.setFirstName(\"demo\");

employee.setLastName(\"user\");

Long id = session.save(employee); // returns the generated ID

```

This will execute the SQL INSERT statement and return the ID of the newly inserted record:

```sql

Hibernate: insert into Employee (ID, email, firstName, lastName) values (default, , , )

```

Using Session.update()

The update() method is used to reattach a detached (not associated with any Session) entity to a Session and update its state in the database. The update() method does not return anything, it returns void. However, we can get the ID of the updated entity from its getter method, assuming that it was already set when the entity was first persisted[^3^].

For example, if we have a detached EmployeeEntity instance with some modified fields, we can use the update() method as follows:

```java

EmployeeEntity employee = ...; // get a detached instance

employee.setLastName(\"userOne\"); // modify some fields

session.update(employee); // reattach and update

Long id = employee.getId(); // get the ID from the getter

```

This will execute the SQL UPDATE statement and return the ID of the updated record:

```sql

Hibernate: update Employee set lastName= where ID=

```

Using Session.saveOrUpdate()

The saveOrUpdate() method is used to either save a transient entity or update a detached entity, depending on whether it already has an identifier value or not. The saveOrUpdate() method does not return anything, it returns void. However, we can get the ID of the saved or updated entity from its getter method, similar to the update() method[^1^].

For example, if we have an EmployeeEntity instance that may or may not have an ID value, we can use the saveOrUpdate() method as follows:

```java

EmployeeEntity employee = ...; // get an instance

employee.setLastName(\"userTwo\"); // modify some fields

session.saveOrUpdate(employee); // save or update depending on ID

Long id = employee.getId(); // get the ID from the getter

```

This will execute either an SQL INSERT or UPDATE statement depending on whether the entity has an ID value or not:

```sql

Hibernate: insert into Employee (ID, email, firstName, lastName) values (default, , , )

-- or --

Hibernate: update Employee set lastName= where ID=

```

Conclusion

In this article, we learned how to get the ID of a saved or updated entity in Hibernate using different methods of the Session interface. We saw that the save() method returns the generated identifier directly, while the update() and saveOrUpdate() methods require us to use a getter method on the aa16f39245

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MMOEXP New World:How to Get and Use Transmog Tokens in New World Aeternum

In New World, players can now customize their appearance with a feature that was long requested by the community: Transmog. Transmogrification, or Transmog for short, allows players to change the appearance of their gear without altering its stats. This enables you to create a unique and personalized look for your character while still benefiting from the stat boosts of your equipped gear. Transmog Tokens are the currency used for this cosmetic customization, and knowing how to New World Gold coins obtain and use them is essential for anyone looking to stand out in Aeternum.

What Are Transmog Tokens?

Transmog Tokens are a special in-game currency introduced to New World that allows players to alter the visual appearance of their armor and weapons. These tokens are used to apply skins to your gear, allowing you to wear whatever style you like without compromising on the item’s actual attributes. The tokens are tied to the Transmog system and are used to purchase skins or activate the Transmog feature at a Transmogrification station.

Transmog Tokens come in two primary forms: Regular Transmog Tokens and Special Event Tokens, which are often earned through seasonal events or as part of limited-time promotions. Regular Transmog Tokens are used for standard skins, while Special Event Tokens are typically required for exclusive or event-themed skins that are only available for a limited time.

How to Obtain Transmog Tokens

There are several ways to get Transmog Tokens in New World, and each method offers players different opportunities to earn and spend these valuable tokens.

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One of the easiest ways to earn Transmog Tokens is by completing various in-game achievements. These can range from quest completions, defeating world bosses, or participating in PvP events. For example, completing a faction-specific challenge or reaching a milestone in crafting may reward you with a set amount of Transmog Tokens.

2. Participating in Seasonal Events

Transmog Tokens are also often awarded as rewards during seasonal events like the Winter Convergence or Summer Medleyfaire. These events tend to offer exclusive skins and cosmetic rewards that can only be obtained during the event's run. Special Event Tokens are often given as a part of these events, which are then used to unlock themed Transmog skins that reflect the event’s theme.

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Transmogrification stations are located in various settlements around Aeternum. These stations are usually found in the central hubs of larger cities or towns, such as Everfall, Windsward, or Monarch’s Bluffs. Simply head to one of these locations to begin your customization journey.

2. Interact with the Transmogrification Station

At the station, interact with the interface to view the available skins for your armor and weapons. The menu will show your currently equipped gear and available skins for those items. Skins can be sorted by armor type (light, medium, heavy) or by weapon class (sword, bow, musket, etc.).

3. Select the Gear You Want to Transmog

Choose the piece of gear you want to change. For example, if you have a helmet that you don’t like the look of, you can apply a different skin to it using your Transmog Tokens. You’ll need to confirm the gear’s stats (which will remain the same) and decide which skin to apply.

4. Pay with Transmog Tokens

Once you’ve selected the skin, the system will prompt you to pay the required amount of Transmog Tokens to apply the skin. The cost can vary depending on the rarity and complexity of the skin. After paying, the new appearance will be applied to your gear, and you’ll look completely different without changing the stats.

5. Preview and Save Your Look

Before committing to the Transmog, you can preview how your gear will look with the new skin. This ensures you are happy with your customization before you finalize the appearance change. Once you’re satisfied, click "Confirm" to save your changes.

Key Tips for Transmogging in New World

Mix and Match: The beauty of Transmog is that you can mix and match different skins from various sets, allowing you to create a truly unique look. Don't hesitate to experiment with different styles and combinations.

Event Skins: Always keep an eye on limited-time event skins that are tied to seasonal events. These skins often have unique designs and are not available after the event ends.

Budget Tokens Wisely: While it’s tempting to buy New World Gold coins spend Transmog Tokens quickly, remember that acquiring them can take time. Make sure you spend them on skins that you really love and can enjoy for the long term.

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The Hibernate SaveOrUpdate method is handy for managing entities in your database. While it doesn’t directly return an ID, the associated entity’s identifier is updated automatically. Similarly, identifying your brand securely with the best Trademark Services ensures lasting protection. Have you implemented Hibernate in your projects? Share your experiences!

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