class Clear::Reflection::Table::Collection

Overview

Addition of the method for eager loading and N+1 avoidance.

Defined in:

clear/model/reflection/table.cr:4
clear/model/reflection/table.cr:16
clear/model/reflection/table.cr:18
clear/model/reflection/table.cr:19

Instance Method Summary

Instance methods inherited from class Clear::Model::CollectionBase(Clear::Reflection::Table)

<<(item : T) <<, [](range : Range(Number, Number), fetch_columns = false) : Array(T)
[](off, fetch_columns = false) : T
[]
, []?(off, fetch_columns = false) : T | Nil []?, add(item : T) add, any? any?, build(x : NamedTuple, &block : T -> Nil) : T
build(**tuple, & : T -> Nil) : T
build(x : NamedTuple) : T
build(**tuple) : T
build
, count(type : X.class = Int64) forall X count, create(x : NamedTuple, &block : T -> Nil) : T
create(**tuple, & : T -> Nil) : T
create(x : NamedTuple) : T
create(**tuple) : T
create
, create!(x : NamedTuple, &block : T -> Nil) : T
create!(**tuple, & : T -> Nil) : T
create!(x : NamedTuple) : T
create!(**tuple) : T
create!
, delete_all : self delete_all, dup dup, each(fetch_columns = false, &block : T -> ) each, each_with_cursor(batch = 1000, fetch_columns = false, &block : T -> ) each_with_cursor, empty? empty?, find(fetch_columns = false, &) : T | Nil
find(tuple : NamedTuple, fetch_columns = false) : T | Nil
find(**tuple) : T | Nil
find
, find!(fetch_columns = false, &) : T
find!(tuple : NamedTuple, fetch_columns = false) : T
find!(**tuple) : T
find!
, find_or_build(x : NamedTuple, &block : T -> Nil) : T
find_or_build(**tuple, & : T -> Nil) : T
find_or_build(x : NamedTuple) : T
find_or_build(**tuple) : T
find_or_build
, find_or_create(x : NamedTuple, &block : T -> Nil) : T
find_or_create(**tuple, & : T -> Nil) : T
find_or_create(x : NamedTuple) : T
find_or_create(**tuple) : T
find_or_create
, first(fetch_columns = false) : T | Nil first, first!(fetch_columns = false) : T first!, item_class item_class, last(fetch_columns = false) : T | Nil last, last!(fetch_columns = false) : T last!, map(fetch_columns = false, &block : T -> X) : Array(X) forall X map, tags tags, to_a(fetch_columns = false) : Array(T) to_a, unlink(item : T) unlink

Instance methods inherited from module Clear::SQL::SelectBuilder

before_query(&block : -> Nil) before_query, columns : Array(SQL::Column) columns, default_wildcard_table default_wildcard_table, dup : self dup, havings : Array(Clear::Expression::Node) havings, is_distinct? is_distinct?, joins : Array(SQL::Join) joins, limit : Int64 | Nil limit, lock : String | Nil lock, offset : Int64 | Nil offset, order_bys : Array(Clear::SQL::Query::OrderBy::Record) order_bys, to_delete to_delete, to_sql : String to_sql, to_update to_update, total_entries : Int64 | Nil total_entries, total_entries=(total_entries : Int64 | Nil) total_entries=, wheres : Array(Clear::Expression::Node) wheres

Constructor methods inherited from module Clear::SQL::SelectBuilder

new(distinct_value = nil, cte = {} of String => Clear::SQL::SelectBuilder | String, columns = [] of SQL::Column, froms = [] of SQL::From, joins = [] of SQL::Join, wheres = [] of Clear::Expression::Node, havings = [] of Clear::Expression::Node, windows = [] of ::Tuple(String, String), group_bys = [] of Symbolic, order_bys = [] of Clear::SQL::Query::OrderBy::Record, limit = nil, offset = nil, lock = nil, before_query_triggers = [] of (-> Nil)) new

Instance methods inherited from module Clear::SQL::Query::WithPagination

current_page current_page, first_page? first_page?, last_page? last_page?, next_page next_page, out_of_bounds? out_of_bounds?, paginate(page : Int32 = DEFAULT_PAGE, per_page : Int32 = DEFAULT_LIMIT) paginate, per_page per_page, previous_page previous_page, total_pages total_pages

Instance methods inherited from module Clear::SQL::Query::Change

change! : self change!

Instance methods inherited from module Clear::SQL::Query::Connection

connection_name : String connection_name, use_connection(connection_name : String) use_connection

Instance methods inherited from module Clear::SQL::Query::Pluck

pluck(fields : Tuple(*T)) forall T
pluck(*fields)
pluck(**fields : **T) forall T
pluck
, pluck_col(field : Clear::SQL::Symbolic, type : T.class) forall T
pluck_col(field : Clear::SQL::Symbolic)
pluck_col

Instance methods inherited from module Clear::SQL::Query::Fetch

fetch(fetch_all = false, & : Hash(String, Clear::SQL::Any) -> Nil) fetch, fetch_first fetch_first, fetch_first! fetch_first!, fetch_with_cursor(count = 1000, & : Hash(String, Clear::SQL::Any) -> Nil) fetch_with_cursor, first first, first! first!, scalar(type : T.class) forall T scalar, to_a : Array(Hash(String, Clear::SQL::Any)) to_a

Instance methods inherited from module Clear::SQL::Query::Execute

execute(connection_name : String | Nil = nil) execute

Instance methods inherited from module Clear::SQL::Query::Lock

with_lock(str : String = "FOR UPDATE") with_lock

Instance methods inherited from module Clear::SQL::Query::Window

clear_windows clear_windows, print_windows print_windows, window(name, value)
window(windows : NamedTuple)
window
, windows : Array(WindowDeclaration) windows

Instance methods inherited from module Clear::SQL::Query::CTE

cte : Hash(String, CTEAuthorized) cte, with_cte(name, request : CTEAuthorized)
with_cte(tuple : NamedTuple)
with_cte

Instance methods inherited from module Clear::SQL::Query::Aggregate

agg(field, x : X.class) forall X agg, avg(field, x : X.class) forall X avg, count(type : X.class = Int64) forall X count, max(field, x : X.class) forall X max, min(field, x : X.class) forall X min, sum(field) : Float64 sum

Instance methods inherited from module Clear::SQL::Query::OffsetLimit

clear_limit clear_limit, clear_offset clear_offset, limit(x : Int | Nil) limit, offset(x : Int | Nil) offset

Instance methods inherited from module Clear::SQL::Query::GroupBy

clear_group_bys clear_group_bys, group_by(column : Symbolic) group_by, group_bys : Array(Symbolic) group_bys

Instance methods inherited from module Clear::SQL::Query::OrderBy

clear_order_bys clear_order_bys, order_by(tuple : NamedTuple)
order_by(expression : Symbol, direction : Symbol = :asc, nulls : Symbol | Nil = nil)
order_by(expression : String, direction : Symbol = :asc, nulls : Symbol | Nil = nil)
order_by(**tuple)
order_by
, reverse_order_by reverse_order_by

Instance methods inherited from module Clear::SQL::Query::Having

clear_havings clear_havings, having(node : Clear::Expression::Node)
having(&)
having(conditions : NamedTuple | Hash(String, Clear::SQL::Any))
having(template : String, *args)
having(template : String, **tuple)
having(**tuple)
having
, or_having(node : Clear::Expression::Node)
or_having(template : String, *args)
or_having(template : String, **named_tuple)
or_having(&)
or_having

Instance methods inherited from module Clear::SQL::Query::Where

clear_wheres clear_wheres, or_where(node : Clear::Expression::Node)
or_where(template : String, *args)
or_where(template : String, **tuple)
or_where(&)
or_where
, where(node : Clear::Expression::Node)
where(&)
where(conditions : NamedTuple | Hash(String, Clear::SQL::Any))
where(template : String)
where(template : String, *args)
where(template : String, **tuple)
where(**tuple)
where

Instance methods inherited from module Clear::SQL::Query::Join

cross_join(name : Selectable, lateral = false) cross_join, full_outer_join(name : Selectable, lateral = false, &)
full_outer_join(name : Selectable, condition : String = "true", lateral = false)
full_outer_join
, inner_join(name : Selectable, lateral = false, &)
inner_join(name : Selectable, condition : String = "true", lateral = false)
inner_join
, join(name : Selectable, type = :inner, lateral = false, &)
join(name : Selectable, type = :inner, condition : String = "true", lateral = false)
join(name : Selectable, type = :inner, lateral = false)
join
, left_join(name : Selectable, lateral = false, &)
left_join(name : Selectable, condition : String = "true", lateral = false)
left_join
, right_join(name : Selectable, lateral = false, &)
right_join(name : Selectable, condition : String = "true", lateral = false)
right_join

Instance methods inherited from module Clear::SQL::Query::From

clear_from clear_from, from(*args)
from(**tuple)
from
, froms : Array(SQL::From) froms

Instance methods inherited from module Clear::SQL::Query::Select

clear_distinct clear_distinct, clear_select clear_select, default_wildcard_table=(table : String | Nil = nil) default_wildcard_table=, distinct(on : String | Nil = "") distinct, distinct_value : String | Nil distinct_value, select(c : Column)
select(*args)
select

Instance Method Detail

def public #

[View source]
def tables_only #

[View source]
def views_only #

[View source]
def with_columns(fetch_columns = false, &block : Clear::Reflection::Column::Collection -> ) : self #

Eager load the has many relation columns. Use it to avoid N+1 queries.


def with_columns(fetch_columns = false) #