class Book {
String title
Date releaseDate
String author
static constraints = {
releaseDate nullable: true
}
}findOrSaveWhere
Purpose
Uses named arguments corresponding to property names of the domain class to execute a query returning the first matching result. This method behaves just like findWhere except that it will never return null. If a matching instance cannot be found in the database then a new instance is created, populated with values from the query parameters, saved and returned. The difference between this method and findOrCreateWhere is that this method will save a newly created instance where findOrCreateWhere does not.
Examples
Given the domain class:
You can query in the form:
def book = Book.findOrSaveWhere(author: "Stephen King", title: "The Stand")Description
Parameters:
-
queryParams- A Map of key/value pairs to be used in the query. If no matching instance is found then this data is used to initialize a new instance.