The Generic JPA Criteria REST Library is a powerful and flexible tool for Spring Boot applications, enabling users to perform dynamic database queries through a single REST endpoint. This library simplifies the process of querying different entities in a project by allowing clients to send a JSON request body specifying the search criteria and desired projections.

• Single REST Endpoint: Perform queries on any entity within your project through a single, unified endpoint.
• Dynamic Query Building: Leverage the power of JPA Criteria API to build queries dynamically based on the request.
• Flexible Search Criteria: Supports various search operations like like, equals, isNull, and isNotNull.
• Projection Support: Specify the fields you want in the response to avoid fetching unnecessary data.
• Easy Integration: Designed to seamlessly integrate with existing Spring Boot projects.

• Java 17 or higher
• Spring Boot 3.x
• Gradle

You can add this library to your project as a Maven or Gradle dependency. (Note: Replace x.y.z with the actual version of the library.)

dependencies {
    implementation 'com.example:generic-jpa-criteria-rest:x.y.z'
}

1. Create Search Requests: Send a POST request to /search with a JSON body defining the search criteria.

   Example Request Body:

   {
     "where": {
       "like": {"name": "John"},
       "equalsLong": {"age": 30},
       "notEqualsLong": {"age": 50},
       "equalsString": {"city": "New York"},
       "isNull": ["address"],
       "isNotNull": ["phoneNumber"]
     },
     "projection": ["id", "name", "email"]
   }

2. Handle the Response: The server will respond with a SearchResult object containing the query results and the entity type.

• Search: Defines the search criteria and projection fields.
• Where: Specifies the conditions for the search, supporting various operations.
• SearchResult: Contains the results of the search and the type of entity queried.

Contributions are welcome! If you'd like to contribute, please fork the repository and use a feature branch. Pull requests are warmly welcome.

This project is licensed under MIT. Feel free to use and modify it as per your needs.

For more information or if you encounter any issues, please open an issue in the GitHub repository.