goext/sq/filter.go

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package sq
import ct "gogs.mikescher.com/BlackForestBytes/goext/cursortoken"
type FilterSort struct {
Field string
Direction ct.SortDirection
}
type PaginateFilter interface {
SQL(params PP) (filterClause string, joinClause string, joinTables []string)
Sort() []FilterSort
}
type genericPaginateFilter struct {
sql func(params PP) (filterClause string, joinClause string, joinTables []string)
sort func() []FilterSort
}
func (g genericPaginateFilter) SQL(params PP) (filterClause string, joinClause string, joinTables []string) {
return g.sql(params)
}
func (g genericPaginateFilter) Sort() []FilterSort {
return g.sort()
}
func NewPaginateFilter(sql func(params PP) (filterClause string, joinClause string, joinTables []string), sort []FilterSort) PaginateFilter {
return genericPaginateFilter{
sql: func(params PP) (filterClause string, joinClause string, joinTables []string) {
return sql(params)
},
sort: func() []FilterSort {
return sort
},
}
}
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func NewSimplePaginateFilter(filterClause string, filterParams PP, sort []FilterSort) PaginateFilter {
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return genericPaginateFilter{
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sql: func(params PP) (string, string, []string) {
params.AddAll(filterParams)
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return filterClause, "", nil
},
sort: func() []FilterSort {
return sort
},
}
}