onResultSet

The onResultSet callback is a feature commonly found in database connectivity libraries and frameworks, particularly those used in Java for interacting with SQL databases. It is invoked by the database driver or API after a query has been executed and the results are available. This callback mechanism allows developers to process the data returned by the database in a structured and controlled manner.

Typically, the onResultSet callback receives one or more parameters, often including a ResultSet object. The ResultSet object represents the set of rows and columns returned by the database query. Within the callback, developers can iterate through the rows of the ResultSet, retrieve data from specific columns by name or index, and perform various operations such as data transformation, validation, or population of application objects.

The primary purpose of onResultSet is to provide a clean separation between the act of executing a database query and the subsequent processing of its results. This can improve code organization and maintainability, especially in applications with complex data retrieval and manipulation requirements. It allows for modular design, where the logic for handling query results can be encapsulated in dedicated methods or functions, making the overall codebase easier to understand and test. While the exact implementation and naming may vary across different libraries, the core concept of a callback triggered upon result set availability remains a fundamental pattern for database interaction.