Скачать или смотреть How to Delete in List Using Panache in Quarkus

Discover how to efficiently `delete records` in a list using Panache ORM in Quarkus, including an example for implementation.
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Deleting Records with Panache in Quarkus: A Simple Guide

In the world of software development, particularly when using Java with frameworks like Quarkus, managing database records efficiently is a common challenge. One commonly asked question is how to delete multiple records from a database using a list of IDs. If you've been struggling to find the right approach using Panache ORM in Quarkus, you're in the right place. In this post, we will explore how to delete records based on a list of IDs using Panache, illustrating the solution with concrete examples.

The Problem at Hand

You've probably been in a situation where you need to delete records from a database table based on an array of IDs. One approach is certainly to use Hibernate's HQL (Hibernate Query Language), which allows for deleting using queries. However, if you're looking to harness the simplicity and functionality of Panache, you might find yourself unsure of how to proceed.

Here’s a quick recap of the typical Hibernate HQL method:

[[See Video to Reveal this Text or Code Snippet]]

While this works well, let's see how to achieve the same result with Panache.

Using Panache to Delete Records

Panache simplifies CRUD operations in Quarkus, allowing for a more streamlined and expressive way to interact with your database. Here’s how you can delete records based on a list of IDs:

Step-by-Step Implementation

Create Your List of IDs: Similar to the HQL approach, you need to define the IDs of the records you want to remove. In this case, we’ll use an array of Long values.

Convert Array to List: Panache’s delete method accepts a list, so you'll convert the array of IDs to a list.

Execute the Delete Operation: Utilize the delete method of your Panache entity to perform the deletion.

Example Code

Here’s how you can implement the deletion using Panache ORM in your Quarkus application:

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Explanation of the Code

Long[] ids: This line initializes an array containing the IDs of the records you wish to delete.

Arrays.asList: This method converts the array into a list, making it suitable for the Panache delete method.

SysMenu.delete: This is your Panache entity call, where "id in (?1)" is the delete query, and list is the parameter being passed.

The method returns the number of rows deleted, which you can use for logging or confirmation purposes.

Conclusion

Using Panache for deletion operations in Quarkus simplifies the workflow and reduces boilerplate code compared to traditional Hibernate methods. By following the steps outlined above, you can easily delete multiple records based on their IDs using a clean, straightforward API.

Implementing such features not only boosts your productivity but also enhances the maintainability of your code. If you have further queries or examples you’d like to explore regarding Quarkus and Panache, feel free to discuss them in the comments below!