(Quick Reference) ## 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:
    class Book {

       String title
       Date releaseDate
       String author

       static constraints = {
          releaseDate nullable: true
       }
    }
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. | Quick Reference (hide)