Class RawSqlResultsToEntityTransformer

Transforms raw sql results returned from the database into entity object. Entity is constructed based on its entity metadata.

Hierarchy

RawSqlResultsToEntityTransformer

Index

Constructors

constructor

Properties

Methods

Constructors

constructor

new RawSqlResultsToEntityTransformer(expressionMap: QueryExpressionMap, driver: Driver, rawRelationIdResults: RelationIdLoadResult[], rawRelationCountResults: RelationCountLoadResult[], queryRunner?: QueryRunner): RawSqlResultsToEntityTransformer

- Defined in query-builder/transformer/RawSqlResultsToEntityTransformer.ts:19
Parameters
- expressionMap: QueryExpressionMap
- driver: Driver
- rawRelationIdResults: RelationIdLoadResult[]
- rawRelationCountResults: RelationCountLoadResult[]
- Optional queryRunner: QueryRunner
Returns RawSqlResultsToEntityTransformer

Properties

Protected driver

driver: Driver

Protected expressionMap

expressionMap: QueryExpressionMap

Protected Optional queryRunner

queryRunner: QueryRunner

Protected rawRelationCountResults

rawRelationCountResults: RelationCountLoadResult[]

Protected rawRelationIdResults

rawRelationIdResults: RelationIdLoadResult[]

Methods

Protected buildColumnAlias

buildColumnAlias(aliasName: string, columnName: string): string

- Defined in query-builder/transformer/RawSqlResultsToEntityTransformer.ts:311
Builds column alias from given alias name and column name, If alias length is more than 29, abbreviates column name.

Parameters
- aliasName: string
- columnName: string
Returns string

Private createValueMapFromJoinColumns

createValueMapFromJoinColumns(relation: RelationMetadata, parentAlias: string, rawSqlResults: any[]): ObjectLiteral

- Defined in query-builder/transformer/RawSqlResultsToEntityTransformer.ts:319
Parameters
- relation: RelationMetadata
- parentAlias: string
- rawSqlResults: any[]
Returns ObjectLiteral

Private extractEntityPrimaryIds

extractEntityPrimaryIds(relation: RelationMetadata, relationIdRawResult: any): ObjectLiteral

- Defined in query-builder/transformer/RawSqlResultsToEntityTransformer.ts:345
Parameters
- relation: RelationMetadata
- relationIdRawResult: any
Returns ObjectLiteral

Protected group

group(rawResults: any[], alias: Alias): Map<string, any[]>

- Defined in query-builder/transformer/RawSqlResultsToEntityTransformer.ts:58
Groups given raw results by ids of given alias.

Parameters
- rawResults: any[]
- alias: Alias
Returns Map<string, any[]>

transform

transform(rawResults: any[], alias: Alias): any[]

- Defined in query-builder/transformer/RawSqlResultsToEntityTransformer.ts:40
Since db returns a duplicated rows of the data where accuracies of the same object can be duplicated we need to group our result and we must have some unique id (primary key in our case)

Parameters
- rawResults: any[]
- alias: Alias
Returns any[]

Protected transformColumns

transformColumns(rawResults: any[], alias: Alias, entity: ObjectLiteral, metadata: EntityMetadata): boolean

- Defined in query-builder/transformer/RawSqlResultsToEntityTransformer.ts:114
Parameters
- rawResults: any[]
- alias: Alias
- entity: ObjectLiteral
- metadata: EntityMetadata
Returns boolean

Protected transformJoins

transformJoins(rawResults: any[], entity: ObjectLiteral, alias: Alias, metadata: EntityMetadata): boolean

- Defined in query-builder/transformer/RawSqlResultsToEntityTransformer.ts:141
Transforms joined entities in the given raw results by a given alias and stores to the given (parent) entity

Parameters
- rawResults: any[]
- entity: ObjectLiteral
- alias: Alias
- metadata: EntityMetadata
Returns boolean

Protected transformRawResultsGroup

transformRawResultsGroup(rawResults: any[], alias: Alias): ObjectLiteral | undefined

- Defined in query-builder/transformer/RawSqlResultsToEntityTransformer.ts:78
Transforms set of data results into single entity.

Parameters
- rawResults: any[]
- alias: Alias
Returns ObjectLiteral | undefined

Protected transformRelationCounts

transformRelationCounts(rawSqlResults: any[], alias: Alias, entity: ObjectLiteral): boolean

- Defined in query-builder/transformer/RawSqlResultsToEntityTransformer.ts:277
Parameters
- rawSqlResults: any[]
- alias: Alias
- entity: ObjectLiteral
Returns boolean

Protected transformRelationIds

transformRelationIds(rawSqlResults: any[], alias: Alias, entity: ObjectLiteral, metadata: EntityMetadata): boolean

- Defined in query-builder/transformer/RawSqlResultsToEntityTransformer.ts:192
Parameters
- rawSqlResults: any[]
- alias: Alias
- entity: ObjectLiteral
- metadata: EntityMetadata
Returns boolean

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