Question

Imagine I have the following query:

def result = Test.createCriteria().list(params) {
     // image here a lot of assocs, criterias, ...
}

In many cases you need the row count of the query above, e.g. list actions of many controllers.

def resultTotal = Test.createCriteria().list(params) {
     // Imagine here a lot of assocs, criterias, ...
     // Change to the criteria above is only the projection block
     projections { rowCount() }
}

How can I avoid this?

Answer 1

You can:

1. Extract the Criteria creation to a conditional factory/builder method;
2. Use named queries;
3. Use named query parameters (and Groovy code!) to alter the query “on the fly”, like:

.

static namedQueries = {
    byLocation { Location location ->
        if (location) {
        ... // some more criteria logic
        }
    }
}