Criteria in grails

def criteria = Person.createCriteria()
def result = criteria.list (max:10, offset:0) {
    eq ('firstName', 'John')
}

Criteria in grails

def criteria = Person.createCriteria()
def result = criteria.list {
    if (firstNameToSearch != null) {
        eq('firstName', firstNameToSearch)
    }
    if (lastNameToSearch != null) {
        eq('lastName', lastNameToSearch)
    }
}

Criteria in grails

def criteria = Person.createCriteria()
def result = criteria.list {
    or {
        and {
            eq('lastName', 'Doe')
            gt('age', 15)
        }
        and {
            eq('lastName', 'Smith')
            gt('age', 18)
        }
    }
}

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