-
Notifications
You must be signed in to change notification settings - Fork 256
/
dsl.go
838 lines (712 loc) · 20.6 KB
/
dsl.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
// Copyright 2021-present The Atlas Authors. All rights reserved.
// This source code is licensed under the Apache 2.0 license found
// in the LICENSE file in the root directory of this source tree.
package schema
import (
"reflect"
)
// The functions and methods below provide a DSL for creating schema resources using
// a fluent interface. Note that some methods create links between the schema elements.
// New creates a new Schema.
func New(name string) *Schema {
return &Schema{Name: name}
}
// SetCharset sets or appends the Charset attribute
// to the schema with the given value.
func (s *Schema) SetCharset(v string) *Schema {
ReplaceOrAppend(&s.Attrs, &Charset{V: v})
return s
}
// UnsetCharset unsets the Charset attribute.
func (s *Schema) UnsetCharset() *Schema {
del(&s.Attrs, &Charset{})
return s
}
// SetCollation sets or appends the Collation attribute
// to the schema with the given value.
func (s *Schema) SetCollation(v string) *Schema {
ReplaceOrAppend(&s.Attrs, &Collation{V: v})
return s
}
// UnsetCollation the Collation attribute.
func (s *Schema) UnsetCollation() *Schema {
del(&s.Attrs, &Collation{})
return s
}
// SetComment sets or appends the Comment attribute
// to the schema with the given value.
func (s *Schema) SetComment(v string) *Schema {
ReplaceOrAppend(&s.Attrs, &Comment{Text: v})
return s
}
// AddAttrs adds additional attributes to the schema.
func (s *Schema) AddAttrs(attrs ...Attr) *Schema {
s.Attrs = append(s.Attrs, attrs...)
return s
}
// SetRealm sets the database/realm of the schema.
func (s *Schema) SetRealm(r *Realm) *Schema {
s.Realm = r
return s
}
// AddTables adds and links the given tables to the schema.
func (s *Schema) AddTables(tables ...*Table) *Schema {
for _, t := range tables {
t.SetSchema(s)
}
s.Tables = append(s.Tables, tables...)
return s
}
// AddViews adds and links the given views to the schema.
func (s *Schema) AddViews(views ...*View) *Schema {
for _, v := range views {
v.SetSchema(s)
}
s.Views = append(s.Views, views...)
return s
}
// AddObjects adds the given objects to the schema.
func (s *Schema) AddObjects(objs ...Object) *Schema {
s.Objects = append(s.Objects, objs...)
return s
}
// NewRealm creates a new Realm.
func NewRealm(schemas ...*Schema) *Realm {
r := &Realm{Schemas: schemas}
for _, s := range schemas {
s.Realm = r
}
return r
}
// AddSchemas adds and links the given schemas to the realm.
func (r *Realm) AddSchemas(schemas ...*Schema) *Realm {
for _, s := range schemas {
s.SetRealm(r)
}
r.Schemas = append(r.Schemas, schemas...)
return r
}
// SetCharset sets or appends the Charset attribute
// to the realm with the given value.
func (r *Realm) SetCharset(v string) *Realm {
ReplaceOrAppend(&r.Attrs, &Charset{V: v})
return r
}
// UnsetCharset unsets the Charset attribute.
func (r *Realm) UnsetCharset() *Realm {
del(&r.Attrs, &Charset{})
return r
}
// SetCollation sets or appends the Collation attribute
// to the realm with the given value.
func (r *Realm) SetCollation(v string) *Realm {
ReplaceOrAppend(&r.Attrs, &Collation{V: v})
return r
}
// UnsetCollation the Collation attribute.
func (r *Realm) UnsetCollation() *Realm {
del(&r.Attrs, &Collation{})
return r
}
// NewTable creates a new Table.
func NewTable(name string) *Table {
return &Table{Name: name}
}
// SetCharset sets or appends the Charset attribute
// to the table with the given value.
func (t *Table) SetCharset(v string) *Table {
ReplaceOrAppend(&t.Attrs, &Charset{V: v})
return t
}
// UnsetCharset unsets the Charset attribute.
func (t *Table) UnsetCharset() *Table {
del(&t.Attrs, &Charset{})
return t
}
// SetCollation sets or appends the Collation attribute
// to the table with the given value.
func (t *Table) SetCollation(v string) *Table {
ReplaceOrAppend(&t.Attrs, &Collation{V: v})
return t
}
// UnsetCollation the Collation attribute.
func (t *Table) UnsetCollation() *Table {
del(&t.Attrs, &Collation{})
return t
}
// SetComment sets or appends the Comment attribute
// to the table with the given value.
func (t *Table) SetComment(v string) *Table {
ReplaceOrAppend(&t.Attrs, &Comment{Text: v})
return t
}
// AddChecks appends the given checks to the attribute list.
func (t *Table) AddChecks(checks ...*Check) *Table {
for _, c := range checks {
t.Attrs = append(t.Attrs, c)
}
return t
}
// SetSchema sets the schema (named-database) of the table.
func (t *Table) SetSchema(s *Schema) *Table {
t.Schema = s
return t
}
// SetPrimaryKey sets the primary-key of the table.
func (t *Table) SetPrimaryKey(pk *Index) *Table {
pk.Table = t
t.PrimaryKey = pk
for _, p := range pk.Parts {
if p.C == nil {
continue
}
if _, ok := t.Column(p.C.Name); !ok {
t.AddColumns(p.C)
}
}
return t
}
// AddColumns appends the given columns to the table column list.
func (t *Table) AddColumns(columns ...*Column) *Table {
t.Columns = append(t.Columns, columns...)
return t
}
// AddIndexes appends the given indexes to the table index list.
func (t *Table) AddIndexes(indexes ...*Index) *Table {
for _, idx := range indexes {
idx.Table = t
}
t.Indexes = append(t.Indexes, indexes...)
return t
}
// AddForeignKeys appends the given foreign-keys to the table foreign-key list.
func (t *Table) AddForeignKeys(fks ...*ForeignKey) *Table {
for _, fk := range fks {
fk.Table = t
}
t.ForeignKeys = append(t.ForeignKeys, fks...)
return t
}
// AddAttrs adds and additional attributes to the table.
func (t *Table) AddAttrs(attrs ...Attr) *Table {
t.Attrs = append(t.Attrs, attrs...)
return t
}
// NewView creates a new View.
func NewView(name, def string) *View {
return &View{Name: name, Def: def}
}
// SetSchema sets the schema (named-database) of the view.
func (v *View) SetSchema(s *Schema) *View {
v.Schema = s
return v
}
// AddColumns appends the given columns to the table column list.
func (v *View) AddColumns(columns ...*Column) *View {
v.Columns = append(v.Columns, columns...)
return v
}
// SetComment sets or appends the Comment attribute
// to the view with the given value.
func (v *View) SetComment(c string) *View {
ReplaceOrAppend(&v.Attrs, &Comment{Text: c})
return v
}
// AddAttrs adds and additional attributes to the view.
func (v *View) AddAttrs(attrs ...Attr) *View {
v.Attrs = append(v.Attrs, attrs...)
return v
}
// AddDeps adds the given objects as dependencies to the view.
func (v *View) AddDeps(objs ...Object) *View {
v.Deps = append(v.Deps, objs...)
return v
}
// SetCheckOption sets the check option of the view.
func (v *View) SetCheckOption(opt string) *View {
ReplaceOrAppend(&v.Attrs, &ViewCheckOption{V: opt})
return v
}
// NewColumn creates a new column with the given name.
func NewColumn(name string) *Column {
return &Column{Name: name}
}
// NewNullColumn creates a new nullable column with the given name.
func NewNullColumn(name string) *Column {
return NewColumn(name).
SetNull(true)
}
// NewBoolColumn creates a new BoolType column.
func NewBoolColumn(name, typ string) *Column {
return NewColumn(name).
SetType(&BoolType{T: typ})
}
// NewNullBoolColumn creates a new nullable BoolType column.
func NewNullBoolColumn(name, typ string) *Column {
return NewBoolColumn(name, typ).
SetNull(true)
}
// NewIntColumn creates a new IntegerType column.
func NewIntColumn(name, typ string) *Column {
return NewColumn(name).
SetType(&IntegerType{T: typ})
}
// NewNullIntColumn creates a new nullable IntegerType column.
func NewNullIntColumn(name, typ string) *Column {
return NewIntColumn(name, typ).
SetNull(true)
}
// NewUintColumn creates a new unsigned IntegerType column.
func NewUintColumn(name, typ string) *Column {
return NewColumn(name).
SetType(&IntegerType{T: typ, Unsigned: true})
}
// NewNullUintColumn creates a new nullable unsigned IntegerType column.
func NewNullUintColumn(name, typ string) *Column {
return NewUintColumn(name, typ).
SetNull(true)
}
// EnumOption allows configuring EnumType using functional options.
type EnumOption func(*EnumType)
// EnumName configures the name of the name. This option
// is useful for databases like PostgreSQL that supports
// user-defined types for enums.
func EnumName(name string) EnumOption {
return func(e *EnumType) {
e.T = name
}
}
// EnumValues configures the values of the enum.
func EnumValues(values ...string) EnumOption {
return func(e *EnumType) {
e.Values = values
}
}
// EnumSchema configures the schema of the enum.
func EnumSchema(s *Schema) EnumOption {
return func(e *EnumType) {
e.Schema = s
}
}
// NewEnumColumn creates a new EnumType column.
func NewEnumColumn(name string, opts ...EnumOption) *Column {
t := &EnumType{}
for _, opt := range opts {
opt(t)
}
return NewColumn(name).SetType(t)
}
// NewNullEnumColumn creates a new nullable EnumType column.
func NewNullEnumColumn(name string, opts ...EnumOption) *Column {
return NewEnumColumn(name, opts...).
SetNull(true)
}
// BinaryOption allows configuring BinaryType using functional options.
type BinaryOption func(*BinaryType)
// BinarySize configures the size of the binary type.
func BinarySize(size int) BinaryOption {
return func(b *BinaryType) {
b.Size = &size
}
}
// NewBinaryColumn creates a new BinaryType column.
func NewBinaryColumn(name, typ string, opts ...BinaryOption) *Column {
t := &BinaryType{T: typ}
for _, opt := range opts {
opt(t)
}
return NewColumn(name).SetType(t)
}
// NewNullBinaryColumn creates a new nullable BinaryType column.
func NewNullBinaryColumn(name, typ string, opts ...BinaryOption) *Column {
return NewBinaryColumn(name, typ, opts...).
SetNull(true)
}
// StringOption allows configuring StringType using functional options.
type StringOption func(*StringType)
// StringSize configures the size of the string type.
func StringSize(size int) StringOption {
return func(b *StringType) {
b.Size = size
}
}
// NewStringColumn creates a new StringType column.
func NewStringColumn(name, typ string, opts ...StringOption) *Column {
t := &StringType{T: typ}
for _, opt := range opts {
opt(t)
}
return NewColumn(name).SetType(t)
}
// NewNullStringColumn creates a new nullable StringType column.
func NewNullStringColumn(name, typ string, opts ...StringOption) *Column {
return NewStringColumn(name, typ, opts...).
SetNull(true)
}
// DecimalOption allows configuring DecimalType using functional options.
type DecimalOption func(*DecimalType)
// DecimalPrecision configures the precision of the decimal type.
func DecimalPrecision(precision int) DecimalOption {
return func(b *DecimalType) {
b.Precision = precision
}
}
// DecimalScale configures the scale of the decimal type.
func DecimalScale(scale int) DecimalOption {
return func(b *DecimalType) {
b.Scale = scale
}
}
// DecimalUnsigned configures the unsigned of the float type.
func DecimalUnsigned(unsigned bool) DecimalOption {
return func(b *DecimalType) {
b.Unsigned = unsigned
}
}
// NewDecimalColumn creates a new DecimalType column.
func NewDecimalColumn(name, typ string, opts ...DecimalOption) *Column {
t := &DecimalType{T: typ}
for _, opt := range opts {
opt(t)
}
return NewColumn(name).SetType(t)
}
// NewNullDecimalColumn creates a new nullable DecimalType column.
func NewNullDecimalColumn(name, typ string, opts ...DecimalOption) *Column {
return NewDecimalColumn(name, typ, opts...).
SetNull(true)
}
// FloatOption allows configuring FloatType using functional options.
type FloatOption func(*FloatType)
// FloatPrecision configures the precision of the float type.
func FloatPrecision(precision int) FloatOption {
return func(b *FloatType) {
b.Precision = precision
}
}
// FloatUnsigned configures the unsigned of the float type.
func FloatUnsigned(unsigned bool) FloatOption {
return func(b *FloatType) {
b.Unsigned = unsigned
}
}
// NewFloatColumn creates a new FloatType column.
func NewFloatColumn(name, typ string, opts ...FloatOption) *Column {
t := &FloatType{T: typ}
for _, opt := range opts {
opt(t)
}
return NewColumn(name).SetType(t)
}
// NewNullFloatColumn creates a new nullable FloatType column.
func NewNullFloatColumn(name, typ string, opts ...FloatOption) *Column {
return NewFloatColumn(name, typ, opts...).
SetNull(true)
}
// TimeOption allows configuring TimeType using functional options.
type TimeOption func(*TimeType)
// TimePrecision configures the precision of the time type.
func TimePrecision(precision int) TimeOption {
return func(b *TimeType) {
b.Precision = &precision
}
}
// TimeScale configures the scale of the time type.
func TimeScale(scale int) TimeOption {
return func(b *TimeType) {
b.Scale = &scale
}
}
// NewTimeColumn creates a new TimeType column.
func NewTimeColumn(name, typ string, opts ...TimeOption) *Column {
t := &TimeType{T: typ}
for _, opt := range opts {
opt(t)
}
return NewColumn(name).SetType(t)
}
// NewNullTimeColumn creates a new nullable TimeType column.
func NewNullTimeColumn(name, typ string) *Column {
return NewTimeColumn(name, typ).
SetNull(true)
}
// NewJSONColumn creates a new JSONType column.
func NewJSONColumn(name, typ string) *Column {
return NewColumn(name).
SetType(&JSONType{T: typ})
}
// NewNullJSONColumn creates a new nullable JSONType column.
func NewNullJSONColumn(name, typ string) *Column {
return NewJSONColumn(name, typ).
SetNull(true)
}
// NewSpatialColumn creates a new SpatialType column.
func NewSpatialColumn(name, typ string) *Column {
return NewColumn(name).
SetType(&SpatialType{T: typ})
}
// NewNullSpatialColumn creates a new nullable SpatialType column.
func NewNullSpatialColumn(name, typ string) *Column {
return NewSpatialColumn(name, typ).
SetNull(true)
}
// SetNull configures the nullability of the column
func (c *Column) SetNull(b bool) *Column {
if c.Type == nil {
c.Type = &ColumnType{}
}
c.Type.Null = b
return c
}
// SetType configures the type of the column
func (c *Column) SetType(t Type) *Column {
if c.Type == nil {
c.Type = &ColumnType{}
}
c.Type.Type = t
return c
}
// SetDefault configures the default of the column
func (c *Column) SetDefault(x Expr) *Column {
c.Default = x
return c
}
// SetCharset sets or appends the Charset attribute
// to the column with the given value.
func (c *Column) SetCharset(v string) *Column {
ReplaceOrAppend(&c.Attrs, &Charset{V: v})
return c
}
// UnsetCharset unsets the Charset attribute.
func (c *Column) UnsetCharset() *Column {
del(&c.Attrs, &Charset{})
return c
}
// SetCollation sets or appends the Collation attribute
// to the column with the given value.
func (c *Column) SetCollation(v string) *Column {
ReplaceOrAppend(&c.Attrs, &Collation{V: v})
return c
}
// UnsetCollation the Collation attribute.
func (c *Column) UnsetCollation() *Column {
del(&c.Attrs, &Collation{})
return c
}
// SetComment sets or appends the Comment attribute
// to the column with the given value.
func (c *Column) SetComment(v string) *Column {
ReplaceOrAppend(&c.Attrs, &Comment{Text: v})
return c
}
// SetGeneratedExpr sets or appends the GeneratedExpr attribute.
func (c *Column) SetGeneratedExpr(x *GeneratedExpr) *Column {
ReplaceOrAppend(&c.Attrs, x)
return c
}
// AddAttrs adds additional attributes to the column.
func (c *Column) AddAttrs(attrs ...Attr) *Column {
c.Attrs = append(c.Attrs, attrs...)
return c
}
// NewCheck creates a new check.
func NewCheck() *Check {
return &Check{}
}
// SetName configures the name of the check constraint.
func (c *Check) SetName(name string) *Check {
c.Name = name
return c
}
// SetExpr configures the expression of the check constraint.
func (c *Check) SetExpr(expr string) *Check {
c.Expr = expr
return c
}
// AddAttrs adds additional attributes to the check constraint.
func (c *Check) AddAttrs(attrs ...Attr) *Check {
c.Attrs = append(c.Attrs, attrs...)
return c
}
// NewIndex creates a new index with the given name.
func NewIndex(name string) *Index {
return &Index{Name: name}
}
// NewUniqueIndex creates a new unique index with the given name.
func NewUniqueIndex(name string) *Index {
return NewIndex(name).SetUnique(true)
}
// NewPrimaryKey creates a new primary-key index
// for the given columns.
func NewPrimaryKey(columns ...*Column) *Index {
return new(Index).SetUnique(true).AddColumns(columns...)
}
// SetName configures the name of the index.
func (i *Index) SetName(name string) *Index {
i.Name = name
return i
}
// SetUnique configures the uniqueness of the index.
func (i *Index) SetUnique(b bool) *Index {
i.Unique = b
return i
}
// SetTable configures the table of the index.
func (i *Index) SetTable(t *Table) *Index {
i.Table = t
return i
}
// SetComment sets or appends the Comment attribute
// to the index with the given value.
func (i *Index) SetComment(v string) *Index {
ReplaceOrAppend(&i.Attrs, &Comment{Text: v})
return i
}
// AddAttrs adds additional attributes to the index.
func (i *Index) AddAttrs(attrs ...Attr) *Index {
i.Attrs = append(i.Attrs, attrs...)
return i
}
// AddColumns adds the columns to index parts.
func (i *Index) AddColumns(columns ...*Column) *Index {
for _, c := range columns {
if !c.hasIndex(i) {
c.Indexes = append(c.Indexes, i)
}
i.Parts = append(i.Parts, &IndexPart{SeqNo: len(i.Parts), C: c})
}
return i
}
func (c *Column) hasIndex(idx *Index) bool {
for i := range c.Indexes {
if c.Indexes[i] == idx {
return true
}
}
return false
}
// AddExprs adds the expressions to index parts.
func (i *Index) AddExprs(exprs ...Expr) *Index {
for _, x := range exprs {
i.Parts = append(i.Parts, &IndexPart{SeqNo: len(i.Parts), X: x})
}
return i
}
// AddParts appends the given parts.
func (i *Index) AddParts(parts ...*IndexPart) *Index {
for _, p := range parts {
if p.C != nil && !p.C.hasIndex(i) {
p.C.Indexes = append(p.C.Indexes, i)
}
p.SeqNo = len(i.Parts)
i.Parts = append(i.Parts, p)
}
return i
}
// NewIndexPart creates a new index part.
func NewIndexPart() *IndexPart { return &IndexPart{} }
// NewColumnPart creates a new index part with the given column.
func NewColumnPart(c *Column) *IndexPart { return NewIndexPart().SetColumn(c) }
// NewExprPart creates a new index part with the given expression.
func NewExprPart(x Expr) *IndexPart { return NewIndexPart().SetExpr(x) }
// SetDesc configures the "DESC" attribute of the key part.
func (p *IndexPart) SetDesc(b bool) *IndexPart {
p.Desc = b
return p
}
// AddAttrs adds and additional attributes to the index-part.
func (p *IndexPart) AddAttrs(attrs ...Attr) *IndexPart {
p.Attrs = append(p.Attrs, attrs...)
return p
}
// SetColumn sets the column of the index-part.
func (p *IndexPart) SetColumn(c *Column) *IndexPart {
p.C = c
return p
}
// SetExpr sets the expression of the index-part.
func (p *IndexPart) SetExpr(x Expr) *IndexPart {
p.X = x
return p
}
// NewForeignKey creates a new foreign-key with
// the given constraints/symbol name.
func NewForeignKey(symbol string) *ForeignKey {
return &ForeignKey{Symbol: symbol}
}
// SetTable configures the table that holds the foreign-key (child table).
func (f *ForeignKey) SetTable(t *Table) *ForeignKey {
f.Table = t
return f
}
// AddColumns appends columns to the child-table columns.
func (f *ForeignKey) AddColumns(columns ...*Column) *ForeignKey {
for _, c := range columns {
if !c.hasForeignKey(f) {
c.ForeignKeys = append(c.ForeignKeys, f)
}
}
f.Columns = append(f.Columns, columns...)
return f
}
func (c *Column) hasForeignKey(fk *ForeignKey) bool {
for i := range c.ForeignKeys {
if c.ForeignKeys[i] == fk {
return true
}
}
return false
}
// SetRefTable configures the referenced/parent table.
func (f *ForeignKey) SetRefTable(t *Table) *ForeignKey {
f.RefTable = t
return f
}
// AddRefColumns appends columns to the parent-table columns.
func (f *ForeignKey) AddRefColumns(columns ...*Column) *ForeignKey {
f.RefColumns = append(f.RefColumns, columns...)
return f
}
// SetOnUpdate sets the ON UPDATE constraint action.
func (f *ForeignKey) SetOnUpdate(o ReferenceOption) *ForeignKey {
f.OnUpdate = o
return f
}
// SetOnDelete sets the ON DELETE constraint action.
func (f *ForeignKey) SetOnDelete(o ReferenceOption) *ForeignKey {
f.OnDelete = o
return f
}
// ReplaceOrAppend searches an attribute of the same type as v in
// the list and replaces it. Otherwise, v is appended to the list.
func ReplaceOrAppend(attrs *[]Attr, v Attr) {
t := reflect.TypeOf(v)
for i := range *attrs {
if reflect.TypeOf((*attrs)[i]) == t {
(*attrs)[i] = v
return
}
}
*attrs = append(*attrs, v)
}
// RemoveAttr returns a new slice where all attributes of type T are filtered.
func RemoveAttr[T Attr](attrs []Attr) []Attr {
f := make([]Attr, 0, len(attrs))
for _, a := range attrs {
if _, ok := a.(T); !ok {
f = append(f, a)
}
}
return f
}
// del searches an attribute of the same type as v in
// the list and delete it.
func del(attrs *[]Attr, v Attr) {
t := reflect.TypeOf(v)
for i := range *attrs {
if reflect.TypeOf((*attrs)[i]) == t {
*attrs = append((*attrs)[:i], (*attrs)[i+1:]...)
return
}
}
}