/
EntityMetadata.ts
877 lines (737 loc) · 30.5 KB
/
EntityMetadata.ts
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
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
import {QueryRunner, SelectQueryBuilder} from "..";
import {ObjectLiteral} from "../common/ObjectLiteral";
import {Connection} from "../connection/Connection";
import {PostgresConnectionOptions} from "../driver/postgres/PostgresConnectionOptions";
import {PostgresDriver} from "../driver/postgres/PostgresDriver";
import {SapDriver} from "../driver/sap/SapDriver";
import {SqlServerConnectionOptions} from "../driver/sqlserver/SqlServerConnectionOptions";
import {SqlServerDriver} from "../driver/sqlserver/SqlServerDriver";
import {OracleDriver} from "../driver/oracle/OracleDriver";
import {CannotCreateEntityIdMapError} from "../error/CannotCreateEntityIdMapError";
import {OrderByCondition} from "../find-options/OrderByCondition";
import {TableMetadataArgs} from "../metadata-args/TableMetadataArgs";
import {TreeMetadataArgs} from "../metadata-args/TreeMetadataArgs";
import {OrmUtils} from "../util/OrmUtils";
import {shorten} from "../util/StringUtils";
import {CheckMetadata} from "./CheckMetadata";
import {ColumnMetadata} from "./ColumnMetadata";
import {EmbeddedMetadata} from "./EmbeddedMetadata";
import {EntityListenerMetadata} from "./EntityListenerMetadata";
import {ExclusionMetadata} from "./ExclusionMetadata";
import {ForeignKeyMetadata} from "./ForeignKeyMetadata";
import {IndexMetadata} from "./IndexMetadata";
import {RelationCountMetadata} from "./RelationCountMetadata";
import {RelationIdMetadata} from "./RelationIdMetadata";
import {RelationMetadata} from "./RelationMetadata";
import {TableType} from "./types/TableTypes";
import {TreeType} from "./types/TreeTypes";
import {UniqueMetadata} from "./UniqueMetadata";
/**
* Contains all entity metadata.
*/
export class EntityMetadata {
// -------------------------------------------------------------------------
// Properties
// -------------------------------------------------------------------------
/**
* Connection where this entity metadata is created.
*/
connection: Connection;
/**
* Metadata arguments used to build this entity metadata.
*/
tableMetadataArgs: TableMetadataArgs;
/**
* If entity's table is a closure-typed table, then this entity will have a closure junction table metadata.
*/
closureJunctionTable: EntityMetadata;
/**
* If this is entity metadata for a junction closure table then its owner closure table metadata will be set here.
*/
parentClosureEntityMetadata: EntityMetadata;
/**
* Parent's entity metadata. Used in inheritance patterns.
*/
parentEntityMetadata: EntityMetadata;
/**
* Children entity metadatas. Used in inheritance patterns.
*/
childEntityMetadatas: EntityMetadata[] = [];
/**
* All "inheritance tree" from a target entity.
* For example for target Post < ContentModel < Unit it will be an array of [Post, ContentModel, Unit].
* It also contains child entities for single table inheritance.
*/
inheritanceTree: Function[] = [];
/**
* Table type. Tables can be abstract, closure, junction, embedded, etc.
*/
tableType: TableType = "regular";
/**
* Target class to which this entity metadata is bind.
* Note, that when using table inheritance patterns target can be different rather then table's target.
* For virtual tables which lack of real entity (like junction tables) target is equal to their table name.
*/
target: Function|string;
/**
* Gets the name of the target.
*/
targetName: string;
/**
* Entity's name.
* Equal to entity target class's name if target is set to table.
* If target class is not then then it equals to table name.
*/
name: string;
/**
* View's expression.
* Used in views
*/
expression?: string|((connection: Connection) => SelectQueryBuilder<any>);
/**
* Enables Sqlite "WITHOUT ROWID" modifier for the "CREATE TABLE" statement
*/
withoutRowid?: boolean = false;
/**
* Original user-given table name (taken from schema or @Entity(tableName) decorator).
* If user haven't specified a table name this property will be undefined.
*/
givenTableName?: string;
/**
* Entity table name in the database.
* This is final table name of the entity.
* This name already passed naming strategy, and generated based on
* multiple criteria, including user table name and global table prefix.
*/
tableName: string;
/**
* Entity table path. Contains database name, schema name and table name.
* E.g. myDB.mySchema.myTable
*/
tablePath: string;
/**
* Entity schema path. Contains database name and schema name.
* E.g. myDB.mySchema
*/
schemaPath?: string;
/**
* Gets the table name without global table prefix.
* When querying table you need a table name with prefix, but in some scenarios,
* for example when you want to name a junction table that contains names of two other tables,
* you may want a table name without prefix.
*/
tableNameWithoutPrefix: string;
/**
* Indicates if schema will be synchronized for this entity or not.
*/
synchronize: boolean = true;
/**
* Table's database engine type (like "InnoDB", "MyISAM", etc).
*/
engine?: string;
/**
* Database name.
*/
database?: string;
/**
* Schema name. Used in Postgres and Sql Server.
*/
schema?: string;
/**
* Specifies a default order by used for queries from this table when no explicit order by is specified.
*/
orderBy?: OrderByCondition;
/**
* If this entity metadata's table using one of the inheritance patterns,
* then this will contain what pattern it uses.
*/
inheritancePattern?: "STI"/*|"CTI"*/;
/**
* Checks if there any non-nullable column exist in this entity.
*/
hasNonNullableRelations: boolean = false;
/**
* Indicates if this entity metadata of a junction table, or not.
* Junction table is a table created by many-to-many relationship.
*
* Its also possible to understand if entity is junction via tableType.
*/
isJunction: boolean = false;
/**
* Indicates if this entity is a tree, what type of tree it is.
*/
treeType?: TreeType;
/**
* Checks if this table is a junction table of the closure table.
* This type is for tables that contain junction metadata of the closure tables.
*/
isClosureJunction: boolean = false;
/**
* Checks if entity's table has multiple primary columns.
*/
hasMultiplePrimaryKeys: boolean = false;
/**
* Indicates if this entity metadata has uuid generated columns.
*/
hasUUIDGeneratedColumns: boolean = false;
/**
* If this entity metadata is a child table of some table, it should have a discriminator value.
* Used to store a value in a discriminator column.
*/
discriminatorValue?: string;
/**
* Entity's column metadatas defined by user.
*/
ownColumns: ColumnMetadata[] = [];
/**
* Columns of the entity, including columns that are coming from the embeddeds of this entity.
*/
columns: ColumnMetadata[] = [];
/**
* Ancestor columns used only in closure junction tables.
*/
ancestorColumns: ColumnMetadata[] = [];
/**
* Descendant columns used only in closure junction tables.
*/
descendantColumns: ColumnMetadata[] = [];
/**
* All columns except for virtual columns.
*/
nonVirtualColumns: ColumnMetadata[] = [];
/**
* In the case if this entity metadata is junction table's entity metadata,
* this will contain all referenced columns of owner entity.
*/
ownerColumns: ColumnMetadata[] = [];
/**
* In the case if this entity metadata is junction table's entity metadata,
* this will contain all referenced columns of inverse entity.
*/
inverseColumns: ColumnMetadata[] = [];
/**
* Gets the column with generated flag.
*/
generatedColumns: ColumnMetadata[] = [];
/**
* Gets the object id column used with mongodb database.
*/
objectIdColumn?: ColumnMetadata;
/**
* Gets entity column which contains a create date value.
*/
createDateColumn?: ColumnMetadata;
/**
* Gets entity column which contains an update date value.
*/
updateDateColumn?: ColumnMetadata;
/**
* Gets entity column which contains a delete date value.
*/
deleteDateColumn?: ColumnMetadata;
/**
* Gets entity column which contains an entity version.
*/
versionColumn?: ColumnMetadata;
/**
* Gets the discriminator column used to store entity identificator in single-table inheritance tables.
*/
discriminatorColumn?: ColumnMetadata;
/**
* Special column that stores tree level in tree entities.
*/
treeLevelColumn?: ColumnMetadata;
/**
* Nested set's left value column.
* Used only in tree entities with nested set pattern applied.
*/
nestedSetLeftColumn?: ColumnMetadata;
/**
* Nested set's right value column.
* Used only in tree entities with nested set pattern applied.
*/
nestedSetRightColumn?: ColumnMetadata;
/**
* Materialized path column.
* Used only in tree entities with materialized path pattern applied.
*/
materializedPathColumn?: ColumnMetadata;
/**
* Gets the primary columns.
*/
primaryColumns: ColumnMetadata[] = [];
/**
* Entity's relation metadatas.
*/
ownRelations: RelationMetadata[] = [];
/**
* Relations of the entity, including relations that are coming from the embeddeds of this entity.
*/
relations: RelationMetadata[] = [];
/**
* List of eager relations this metadata has.
*/
eagerRelations: RelationMetadata[] = [];
/**
* List of eager relations this metadata has.
*/
lazyRelations: RelationMetadata[] = [];
/**
* Gets only one-to-one relations of the entity.
*/
oneToOneRelations: RelationMetadata[] = [];
/**
* Gets only owner one-to-one relations of the entity.
*/
ownerOneToOneRelations: RelationMetadata[] = [];
/**
* Gets only one-to-many relations of the entity.
*/
oneToManyRelations: RelationMetadata[] = [];
/**
* Gets only many-to-one relations of the entity.
*/
manyToOneRelations: RelationMetadata[] = [];
/**
* Gets only many-to-many relations of the entity.
*/
manyToManyRelations: RelationMetadata[] = [];
/**
* Gets only owner many-to-many relations of the entity.
*/
ownerManyToManyRelations: RelationMetadata[] = [];
/**
* Gets only owner one-to-one and many-to-one relations.
*/
relationsWithJoinColumns: RelationMetadata[] = [];
/**
* Tree parent relation. Used only in tree-tables.
*/
treeParentRelation?: RelationMetadata;
/**
* Tree children relation. Used only in tree-tables.
*/
treeChildrenRelation?: RelationMetadata;
/**
* Entity's relation id metadatas.
*/
relationIds: RelationIdMetadata[] = [];
/**
* Entity's relation id metadatas.
*/
relationCounts: RelationCountMetadata[] = [];
/**
* Entity's foreign key metadatas.
*/
foreignKeys: ForeignKeyMetadata[] = [];
/**
* Entity's embedded metadatas.
*/
embeddeds: EmbeddedMetadata[] = [];
/**
* All embeddeds - embeddeds from this entity metadata and from all child embeddeds, etc.
*/
allEmbeddeds: EmbeddedMetadata[] = [];
/**
* Entity's own indices.
*/
ownIndices: IndexMetadata[] = [];
/**
* Entity's index metadatas.
*/
indices: IndexMetadata[] = [];
/**
* Entity's unique metadatas.
*/
uniques: UniqueMetadata[] = [];
/**
* Entity's own uniques.
*/
ownUniques: UniqueMetadata[] = [];
/**
* Entity's check metadatas.
*/
checks: CheckMetadata[] = [];
/**
* Entity's exclusion metadatas.
*/
exclusions: ExclusionMetadata[] = [];
/**
* Entity's own listener metadatas.
*/
ownListeners: EntityListenerMetadata[] = [];
/**
* Entity listener metadatas.
*/
listeners: EntityListenerMetadata[] = [];
/**
* Listener metadatas with "AFTER LOAD" type.
*/
afterLoadListeners: EntityListenerMetadata[] = [];
/**
* Listener metadatas with "AFTER INSERT" type.
*/
beforeInsertListeners: EntityListenerMetadata[] = [];
/**
* Listener metadatas with "AFTER INSERT" type.
*/
afterInsertListeners: EntityListenerMetadata[] = [];
/**
* Listener metadatas with "AFTER UPDATE" type.
*/
beforeUpdateListeners: EntityListenerMetadata[] = [];
/**
* Listener metadatas with "AFTER UPDATE" type.
*/
afterUpdateListeners: EntityListenerMetadata[] = [];
/**
* Listener metadatas with "AFTER REMOVE" type.
*/
beforeRemoveListeners: EntityListenerMetadata[] = [];
/**
* Listener metadatas with "AFTER REMOVE" type.
*/
afterRemoveListeners: EntityListenerMetadata[] = [];
/**
* Map of columns and relations of the entity.
*
* example: Post{ id: number, name: string, counterEmbed: { count: number }, category: Category }.
* This method will create following object:
* { id: "id", counterEmbed: { count: "counterEmbed.count" }, category: "category" }
*/
propertiesMap: ObjectLiteral;
// ---------------------------------------------------------------------
// Constructor
// ---------------------------------------------------------------------
constructor(options: {
connection: Connection,
inheritanceTree?: Function[],
inheritancePattern?: "STI"/*|"CTI"*/,
tableTree?: TreeMetadataArgs,
parentClosureEntityMetadata?: EntityMetadata,
args: TableMetadataArgs
}) {
this.connection = options.connection;
this.inheritanceTree = options.inheritanceTree || [];
this.inheritancePattern = options.inheritancePattern;
this.treeType = options.tableTree ? options.tableTree.type : undefined;
this.parentClosureEntityMetadata = options.parentClosureEntityMetadata!;
this.tableMetadataArgs = options.args;
this.target = this.tableMetadataArgs.target;
this.tableType = this.tableMetadataArgs.type;
this.expression = this.tableMetadataArgs.expression;
this.withoutRowid = this.tableMetadataArgs.withoutRowid;
}
// -------------------------------------------------------------------------
// Public Methods
// -------------------------------------------------------------------------
/**
* Creates a new entity.
*/
create(queryRunner?: QueryRunner): any {
// if target is set to a function (e.g. class) that can be created then create it
let ret: any;
if (this.target instanceof Function) {
ret = new (<any> this.target)();
this.lazyRelations.forEach(relation => this.connection.relationLoader.enableLazyLoad(relation, ret, queryRunner));
return ret;
}
// otherwise simply return a new empty object
const newObject = {};
this.lazyRelations.forEach(relation => this.connection.relationLoader.enableLazyLoad(relation, newObject, queryRunner));
return newObject;
}
/**
* Checks if given entity has an id.
*/
hasId(entity: ObjectLiteral): boolean {
if (!entity)
return false;
return this.primaryColumns.every(primaryColumn => {
const value = primaryColumn.getEntityValue(entity);
return value !== null && value !== undefined && value !== "";
});
}
/**
* Checks if given entity / object contains ALL primary keys entity must have.
* Returns true if it contains all of them, false if at least one of them is not defined.
*/
hasAllPrimaryKeys(entity: ObjectLiteral): boolean {
return this.primaryColumns.every(primaryColumn => {
const value = primaryColumn.getEntityValue(entity);
return value !== null && value !== undefined;
});
}
/**
* Ensures that given object is an entity id map.
* If given id is an object then it means its already id map.
* If given id isn't an object then it means its a value of the id column
* and it creates a new id map with this value and name of the primary column.
*/
ensureEntityIdMap(id: any): ObjectLiteral {
if (id instanceof Object)
return id;
if (this.hasMultiplePrimaryKeys)
throw new CannotCreateEntityIdMapError(this, id);
return this.primaryColumns[0].createValueMap(id);
}
/**
* Gets primary keys of the entity and returns them in a literal object.
* For example, for Post{ id: 1, title: "hello" } where id is primary it will return { id: 1 }
* For multiple primary keys it returns multiple keys in object.
* For primary keys inside embeds it returns complex object literal with keys in them.
*/
getEntityIdMap(entity: ObjectLiteral|undefined): ObjectLiteral|undefined {
if (!entity)
return undefined;
return EntityMetadata.getValueMap(entity, this.primaryColumns, { skipNulls: true });
}
/**
* Creates a "mixed id map".
* If entity has multiple primary keys (ids) then it will return just regular id map, like what getEntityIdMap returns.
* But if entity has a single primary key then it will return just value of the id column of the entity, just value.
* This is called mixed id map.
*/
getEntityIdMixedMap(entity: ObjectLiteral|undefined): ObjectLiteral|undefined {
if (!entity)
return entity;
const idMap = this.getEntityIdMap(entity);
if (this.hasMultiplePrimaryKeys) {
return idMap;
} else if (idMap) {
return this.primaryColumns[0].getEntityValue(idMap); // todo: what about parent primary column?
}
return idMap;
}
/**
* Compares two different entities by their ids.
* Returns true if they match, false otherwise.
*/
compareEntities(firstEntity: ObjectLiteral, secondEntity: ObjectLiteral): boolean {
const firstEntityIdMap = this.getEntityIdMap(firstEntity);
if (!firstEntityIdMap) return false;
const secondEntityIdMap = this.getEntityIdMap(secondEntity);
if (!secondEntityIdMap) return false;
return OrmUtils.compareIds(firstEntityIdMap, secondEntityIdMap);
}
/**
* Finds column with a given property name.
*/
findColumnWithPropertyName(propertyName: string): ColumnMetadata|undefined {
return this.columns.find(column => column.propertyName === propertyName);
}
/**
* Finds column with a given database name.
*/
findColumnWithDatabaseName(databaseName: string): ColumnMetadata|undefined {
return this.columns.find(column => column.databaseName === databaseName);
}
/**
* Finds column with a given property path.
*/
findColumnWithPropertyPath(propertyPath: string): ColumnMetadata|undefined {
const column = this.columns.find(column => column.propertyPath === propertyPath);
if (column)
return column;
// in the case if column with property path was not found, try to find a relation with such property path
// if we find relation and it has a single join column then its the column user was seeking
const relation = this.relations.find(relation => relation.propertyPath === propertyPath);
if (relation && relation.joinColumns.length === 1)
return relation.joinColumns[0];
return undefined;
}
/**
* Finds columns with a given property path.
* Property path can match a relation, and relations can contain multiple columns.
*/
findColumnsWithPropertyPath(propertyPath: string): ColumnMetadata[] {
const column = this.columns.find(column => column.propertyPath === propertyPath);
if (column)
return [column];
// in the case if column with property path was not found, try to find a relation with such property path
// if we find relation and it has a single join column then its the column user was seeking
const relation = this.relations.find(relation => relation.propertyPath === propertyPath);
if (relation && relation.joinColumns)
return relation.joinColumns;
return [];
}
/**
* Finds relation with the given property path.
*/
findRelationWithPropertyPath(propertyPath: string): RelationMetadata|undefined {
return this.relations.find(relation => relation.propertyPath === propertyPath);
}
/**
* Checks if there is an embedded with a given property path.
*/
hasEmbeddedWithPropertyPath(propertyPath: string): boolean {
return this.allEmbeddeds.some(embedded => embedded.propertyPath === propertyPath);
}
/**
* Finds embedded with a given property path.
*/
findEmbeddedWithPropertyPath(propertyPath: string): EmbeddedMetadata|undefined {
return this.allEmbeddeds.find(embedded => embedded.propertyPath === propertyPath);
}
/**
* Iterates through entity and finds and extracts all values from relations in the entity.
* If relation value is an array its being flattened.
*/
extractRelationValuesFromEntity(entity: ObjectLiteral, relations: RelationMetadata[]): [RelationMetadata, any, EntityMetadata][] {
const relationsAndValues: [RelationMetadata, any, EntityMetadata][] = [];
relations.forEach(relation => {
const value = relation.getEntityValue(entity);
if (Array.isArray(value)) {
value.forEach(subValue => relationsAndValues.push([relation, subValue, this.getInverseEntityMetadata(subValue, relation)]));
} else if (value) {
relationsAndValues.push([relation, value, this.getInverseEntityMetadata(value, relation)]);
}
});
return relationsAndValues;
}
private getInverseEntityMetadata(value: any, relation: RelationMetadata): EntityMetadata {
const childEntityMetadata = relation.inverseEntityMetadata.childEntityMetadatas.find(metadata =>
metadata.target === value.constructor
);
return childEntityMetadata ? childEntityMetadata : relation.inverseEntityMetadata;
}
// -------------------------------------------------------------------------
// Public Static Methods
// -------------------------------------------------------------------------
/**
* Creates a property paths for a given entity.
*/
static createPropertyPath(metadata: EntityMetadata, entity: ObjectLiteral, prefix: string = "") {
const paths: string[] = [];
Object.keys(entity).forEach(key => {
// check for function is needed in the cases when createPropertyPath used on values containg a function as a value
// example: .update().set({ name: () => `SUBSTR('', 1, 2)` })
const parentPath = prefix ? prefix + "." + key : key;
if (metadata.hasEmbeddedWithPropertyPath(parentPath)) {
const subPaths = this.createPropertyPath(metadata, entity[key], parentPath);
paths.push(...subPaths);
} else {
const path = prefix ? prefix + "." + key : key;
paths.push(path);
}
});
return paths;
}
/**
* Finds difference between two entity id maps.
* Returns items that exist in the first array and absent in the second array.
*/
static difference(firstIdMaps: ObjectLiteral[], secondIdMaps: ObjectLiteral[]): ObjectLiteral[] {
return firstIdMaps.filter(firstIdMap => {
return !secondIdMaps.find(secondIdMap => OrmUtils.compareIds(firstIdMap, secondIdMap));
});
}
/**
* Creates value map from the given values and columns.
* Examples of usages are primary columns map and join columns map.
*/
static getValueMap(entity: ObjectLiteral, columns: ColumnMetadata[], options?: { skipNulls?: boolean }): ObjectLiteral|undefined {
return columns.reduce((map, column) => {
const value = column.getEntityValueMap(entity, options);
// make sure that none of the values of the columns are not missing
if (map === undefined || value === null || value === undefined)
return undefined;
return column.isObjectId ? Object.assign(map, value) : OrmUtils.mergeDeep(map, value);
}, {} as ObjectLiteral|undefined);
}
// ---------------------------------------------------------------------
// Public Builder Methods
// ---------------------------------------------------------------------
build() {
const namingStrategy = this.connection.namingStrategy;
const entityPrefix = this.connection.options.entityPrefix;
this.engine = this.tableMetadataArgs.engine;
this.database = this.tableMetadataArgs.type === "entity-child" && this.parentEntityMetadata ? this.parentEntityMetadata.database : this.tableMetadataArgs.database;
if (this.tableMetadataArgs.schema) {
this.schema = this.tableMetadataArgs.schema;
}
else if ((this.tableMetadataArgs.type === "entity-child") && this.parentEntityMetadata) {
this.schema = this.parentEntityMetadata.schema;
}
else {
this.schema = (this.connection.options as PostgresConnectionOptions|SqlServerConnectionOptions).schema;
}
this.givenTableName = this.tableMetadataArgs.type === "entity-child" && this.parentEntityMetadata ? this.parentEntityMetadata.givenTableName : this.tableMetadataArgs.name;
this.synchronize = this.tableMetadataArgs.synchronize === false ? false : true;
this.targetName = this.tableMetadataArgs.target instanceof Function ? (this.tableMetadataArgs.target as any).name : this.tableMetadataArgs.target;
if (this.tableMetadataArgs.type === "closure-junction") {
this.tableNameWithoutPrefix = namingStrategy.closureJunctionTableName(this.givenTableName!);
} else if (this.tableMetadataArgs.type === "entity-child" && this.parentEntityMetadata) {
this.tableNameWithoutPrefix = namingStrategy.tableName(this.parentEntityMetadata.targetName, this.parentEntityMetadata.givenTableName);
} else {
this.tableNameWithoutPrefix = namingStrategy.tableName(this.targetName, this.givenTableName);
if (this.connection.driver.maxAliasLength && this.connection.driver.maxAliasLength > 0 && this.tableNameWithoutPrefix.length > this.connection.driver.maxAliasLength) {
this.tableNameWithoutPrefix = shorten(this.tableNameWithoutPrefix, { separator: "_", segmentLength: 3 });
}
}
this.tableName = entityPrefix ? namingStrategy.prefixTableName(entityPrefix, this.tableNameWithoutPrefix) : this.tableNameWithoutPrefix;
this.target = this.target ? this.target : this.tableName;
this.name = this.targetName ? this.targetName : this.tableName;
this.expression = this.tableMetadataArgs.expression;
this.withoutRowid = this.tableMetadataArgs.withoutRowid === true ? true : false;
this.tablePath = this.buildTablePath();
this.schemaPath = this.buildSchemaPath();
this.orderBy = (this.tableMetadataArgs.orderBy instanceof Function) ? this.tableMetadataArgs.orderBy(this.propertiesMap) : this.tableMetadataArgs.orderBy; // todo: is propertiesMap available here? Looks like its not
this.isJunction = this.tableMetadataArgs.type === "closure-junction" || this.tableMetadataArgs.type === "junction";
this.isClosureJunction = this.tableMetadataArgs.type === "closure-junction";
}
/**
* Registers a new column in the entity and recomputes all depend properties.
*/
registerColumn(column: ColumnMetadata) {
if (this.ownColumns.indexOf(column) !== -1)
return;
this.ownColumns.push(column);
this.columns = this.embeddeds.reduce((columns, embedded) => columns.concat(embedded.columnsFromTree), this.ownColumns);
this.primaryColumns = this.columns.filter(column => column.isPrimary);
this.hasMultiplePrimaryKeys = this.primaryColumns.length > 1;
this.hasUUIDGeneratedColumns = this.columns.filter(column => column.isGenerated || column.generationStrategy === "uuid").length > 0;
this.propertiesMap = this.createPropertiesMap();
if (this.childEntityMetadatas)
this.childEntityMetadatas.forEach(entityMetadata => entityMetadata.registerColumn(column));
}
/**
* Creates a special object - all columns and relations of the object (plus columns and relations from embeds)
* in a special format - { propertyName: propertyName }.
*
* example: Post{ id: number, name: string, counterEmbed: { count: number }, category: Category }.
* This method will create following object:
* { id: "id", counterEmbed: { count: "counterEmbed.count" }, category: "category" }
*/
createPropertiesMap(): { [name: string]: string|any } {
const map: { [name: string]: string|any } = {};
this.columns.forEach(column => OrmUtils.mergeDeep(map, column.createValueMap(column.propertyPath)));
this.relations.forEach(relation => OrmUtils.mergeDeep(map, relation.createValueMap(relation.propertyPath)));
return map;
}
/**
* Builds table path using database name, schema name and table name.
*/
protected buildTablePath(): string {
let tablePath = this.tableName;
if (this.schema && ((this.connection.driver instanceof OracleDriver) || (this.connection.driver instanceof PostgresDriver) || (this.connection.driver instanceof SqlServerDriver) || (this.connection.driver instanceof SapDriver))) {
tablePath = this.schema + "." + tablePath;
}
if (this.database && !(this.connection.driver instanceof PostgresDriver)) {
if (!this.schema && this.connection.driver instanceof SqlServerDriver) {
tablePath = this.database + ".." + tablePath;
} else {
tablePath = this.database + "." + tablePath;
}
}
return tablePath;
}
/**
* Builds table path using schema name and database name.
*/
protected buildSchemaPath(): string|undefined {
if (!this.schema)
return undefined;
return this.database && !(this.connection.driver instanceof PostgresDriver) ? this.database + "." + this.schema : this.schema;
}
}