| 1 | 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{Alias} from \"./Alias\";\nimport {ObjectLiteral} from \"../common/ObjectLiteral\";\nimport {OrderByCondition} from \"../find-options/OrderByCondition\";\nimport {JoinAttribute} from \"./JoinAttribute\";\nimport {RelationIdAttribute} from \"./relation-id/RelationIdAttribute\";\nimport {RelationCountAttribute} from \"./relation-count/RelationCountAttribute\";\nimport {Connection} from \"../connection/Connection\";\nimport {EntityMetadata} from \"../metadata/EntityMetadata\";\nimport {SelectQuery} from \"./SelectQuery\";\nimport {ColumnMetadata} from \"../metadata/ColumnMetadata\";\nimport {RelationMetadata} from \"../metadata/RelationMetadata\";\nimport {QueryBuilder} from \"./QueryBuilder\";\nimport {SelectQueryBuilderOption} from \"./SelectQueryBuilderOption\";\n\n/**\n * Contains all properties of the QueryBuilder that needs to be build a final query.\n */\nexport class QueryExpressionMap {\n\n // -------------------------------------------------------------------------\n // Public Properties\n // -------------------------------------------------------------------------\n\n /**\n * Indicates if QueryBuilder used to select entities and not a raw results.\n */\n queryEntity: boolean = false;\n\n /**\n * Main alias is a main selection object selected by QueryBuilder.\n */\n mainAlias?: Alias;\n\n /**\n * All aliases (including main alias) used in the query.\n */\n aliases: Alias[] = [];\n\n /**\n * Represents query type. QueryBuilder is able to build SELECT, UPDATE and DELETE queries.\n */\n queryType: \"select\"|\"update\"|\"delete\"|\"insert\"|\"relation\" = \"select\";\n\n /**\n * Data needs to be SELECT-ed.\n */\n selects: SelectQuery[] = [];\n\n /**\n * FROM-s to be selected.\n */\n // froms: { target: string, alias: string }[] = [];\n\n /**\n * If update query was used, it needs \"update set\" - properties which will be updated by this query.\n * If insert query was used, it needs \"insert set\" - values that needs to be inserted.\n */\n valuesSet?: ObjectLiteral|ObjectLiteral[];\n\n /**\n * Optional returning (or output) clause for insert, update or delete queries.\n */\n returning: string|string[];\n\n /**\n * Extra returning columns to be added to the returning statement if driver supports it.\n */\n extraReturningColumns: ColumnMetadata[] = [];\n\n /**\n * Optional on conflict statement used in insertion query in postgres.\n */\n onConflict: string = \"\";\n\n /**\n * Optional on ignore statement used in insertion query in databases.\n */\n onIgnore: string | boolean = false;\n\n /**\n * Optional on update statement used in insertion query in databases.\n */\n onUpdate: { columns?: string, conflict?: string, overwrite?: string };\n\n /**\n * JOIN queries.\n */\n joinAttributes: JoinAttribute[] = [];\n\n /**\n * RelationId queries.\n */\n relationIdAttributes: RelationIdAttribute[] = [];\n\n /**\n * Relation count queries.\n */\n relationCountAttributes: RelationCountAttribute[] = [];\n\n /**\n * WHERE queries.\n */\n wheres: { type: \"simple\"|\"and\"|\"or\", condition: string }[] = [];\n\n /**\n * HAVING queries.\n */\n havings: { type: \"simple\"|\"and\"|\"or\", condition: string }[] = [];\n\n /**\n * ORDER BY queries.\n */\n orderBys: OrderByCondition = {};\n\n /**\n * GROUP BY queries.\n */\n groupBys: string[] = [];\n\n /**\n * LIMIT query.\n */\n limit?: number;\n\n /**\n * OFFSET query.\n */\n offset?: number;\n\n /**\n * Number of rows to skip of result using pagination.\n */\n skip?: number;\n\n /**\n * Number of rows to take using pagination.\n */\n take?: number;\n\n /**\n * Locking mode.\n */\n lockMode?: \"optimistic\"|\"pessimistic_read\"|\"pessimistic_write\"|\"dirty_read\";\n\n /**\n * Current version of the entity, used for locking.\n */\n lockVersion?: number|Date;\n\n /**\n * Parameters used to be escaped in final query.\n */\n parameters: ObjectLiteral = {};\n\n /**\n * Indicates if alias, table names and column names will be ecaped by driver, or not.\n *\n * todo: rename to isQuotingDisabled, also think if it should be named \"escaping\"\n */\n disableEscaping: boolean = true;\n\n /**\n * Indicates if virtual columns should be included in entity result.\n *\n * todo: what to do with it? is it properly used? what about persistence?\n */\n enableRelationIdValues: boolean = false;\n\n /**\n * Extra where condition appended to the end of original where conditions with AND keyword.\n * Original condition will be wrapped into brackets.\n */\n extraAppendedAndWhereCondition: string = \"\";\n\n /**\n * Indicates if query builder creates a subquery.\n */\n subQuery: boolean = false;\n\n /**\n * If QueryBuilder was created in a subquery mode then its parent QueryBuilder (who created subquery) will be stored here.\n */\n parentQueryBuilder: QueryBuilder<any>;\n\n /**\n * Indicates if property names are prefixed with alias names during property replacement.\n * By default this is enabled, however we need this because aliases are not supported in UPDATE and DELETE queries,\n * but user can use them in WHERE expressions.\n */\n aliasNamePrefixingEnabled: boolean = true;\n\n /**\n * Indicates if query result cache is enabled or not.\n */\n cache: boolean = false;\n\n /**\n * Time in milliseconds in which cache will expire.\n * If not set then global caching time will be used.\n */\n cacheDuration: number;\n\n /**\n * Cache id.\n * Used to identifier your cache queries.\n */\n cacheId: string;\n\n /**\n * Options that define QueryBuilder behaviour.\n */\n options: SelectQueryBuilderOption[] = [];\n\n /**\n * Property path of relation to work with.\n * Used in relational query builder.\n */\n relationPropertyPath: string;\n\n /**\n * Entity (target) which relations will be updated.\n */\n of: any|any[];\n\n /**\n * List of columns where data should be inserted.\n * Used in INSERT query.\n */\n insertColumns: string[] = [];\n\n /**\n * Used if user wants to update or delete a specific entities.\n */\n whereEntities: ObjectLiteral[] = [];\n\n /**\n * Indicates if entity must be updated after insertion / updation.\n * This may produce extra query or use RETURNING / OUTPUT statement (depend on database).\n */\n updateEntity: boolean = true;\n\n /**\n * Indicates if listeners and subscribers must be called before and after query execution.\n */\n callListeners: boolean = true;\n\n /**\n * Indicates if query must be wrapped into transaction.\n */\n useTransaction: boolean = false;\n\n /**\n * Extra parameters.\n * Used in InsertQueryBuilder to avoid default parameters mechanizm and execute high performance insertions.\n */\n nativeParameters: ObjectLiteral = {};\n\n // -------------------------------------------------------------------------\n // Constructor\n // -------------------------------------------------------------------------\n\n constructor(protected connection: Connection) {\n }\n\n // -------------------------------------------------------------------------\n // Accessors\n // -------------------------------------------------------------------------\n\n /**\n * Get all ORDER BY queries - if order by is specified by user then it uses them,\n * otherwise it uses default entity order by if it was set.\n */\n get allOrderBys() {\n if (!Object.keys(this.orderBys).length && this.mainAlias!.hasMetadata && this.options.indexOf(\"disable-global-order\") === -1) {\n const entityOrderBy = this.mainAlias!.metadata.orderBy || {};\n return Object.keys(entityOrderBy).reduce((orderBy, key) => {\n orderBy[this.mainAlias!.name + \".\" + key] = entityOrderBy[key];\n return orderBy;\n }, {} as OrderByCondition);\n }\n\n return this.orderBys;\n }\n\n // -------------------------------------------------------------------------\n // Public Methods\n // -------------------------------------------------------------------------\n\n /**\n * Creates a main alias and adds it to the current expression map.\n */\n setMainAlias(alias: Alias): Alias {\n\n // if main alias is already set then remove it from the array\n // if (this.mainAlias)\n // this.aliases.splice(this.aliases.indexOf(this.mainAlias));\n\n // set new main alias\n this.mainAlias = alias;\n\n return alias;\n }\n\n /**\n * Creates a new alias and adds it to the current expression map.\n */\n createAlias(options: { type: \"from\"|\"select\"|\"join\"|\"other\", name?: string, target?: Function|string, tablePath?: string, subQuery?: string, metadata?: EntityMetadata }): Alias {\n\n let aliasName = options.name;\n if (!aliasName && options.tablePath)\n aliasName = options.tablePath;\n if (!aliasName && options.target instanceof Function)\n aliasName = options.target.name;\n if (!aliasName && typeof options.target === \"string\")\n aliasName = options.target;\n\n const alias = new Alias();\n alias.type = options.type;\n if (aliasName)\n alias.name = aliasName;\n if (options.metadata)\n alias.metadata = options.metadata;\n if (options.target && !alias.hasMetadata)\n alias.metadata = this.connection.getMetadata(options.target);\n if (options.tablePath)\n alias.tablePath = options.tablePath;\n if (options.subQuery)\n alias.subQuery = options.subQuery;\n\n this.aliases.push(alias);\n return alias;\n }\n\n /**\n * Finds alias with the given name.\n * If alias was not found it throw an exception.\n */\n findAliasByName(aliasName: string): Alias {\n const alias = this.aliases.find(alias => alias.name === aliasName);\n if (!alias)\n throw new Error(`\"${aliasName}\" alias was not found. Maybe you forgot to join it?`);\n\n return alias;\n }\n\n findColumnByAliasExpression(aliasExpression: string): ColumnMetadata|undefined {\n const [aliasName, propertyPath] = aliasExpression.split(\".\");\n const alias = this.findAliasByName(aliasName);\n return alias.metadata.findColumnWithPropertyName(propertyPath);\n }\n\n /**\n * Gets relation metadata of the relation this query builder works with.\n *\n * todo: add proper exceptions\n */\n get relationMetadata(): RelationMetadata {\n if (!this.mainAlias)\n throw new Error(`Entity to work with is not specified!`); // todo: better message\n\n const relationMetadata = this.mainAlias.metadata.findRelationWithPropertyPath(this.relationPropertyPath);\n if (!relationMetadata)\n throw new Error(`Relation ${this.relationPropertyPath} was not found in entity ${this.mainAlias.name}`); // todo: better message\n\n return relationMetadata;\n }\n\n /**\n * Copies all properties of the current QueryExpressionMap into a new one.\n * Useful when QueryBuilder needs to create a copy of itself.\n */\n clone(): QueryExpressionMap {\n const map = new QueryExpressionMap(this.connection);\n map.queryType = this.queryType;\n map.selects = this.selects.map(select => select);\n this.aliases.forEach(alias => map.aliases.push(new Alias(alias)));\n map.mainAlias = this.mainAlias;\n map.valuesSet = this.valuesSet;\n map.returning = this.returning;\n map.onConflict = this.onConflict;\n map.onIgnore = this.onIgnore;\n map.onUpdate = this.onUpdate;\n map.joinAttributes = this.joinAttributes.map(join => new JoinAttribute(this.connection, this, join));\n map.relationIdAttributes = this.relationIdAttributes.map(relationId => new RelationIdAttribute(this, relationId));\n map.relationCountAttributes = this.relationCountAttributes.map(relationCount => new RelationCountAttribute(this, relationCount));\n map.wheres = this.wheres.map(where => ({ ...where }));\n map.havings = this.havings.map(having => ({ ...having }));\n map.orderBys = Object.assign({}, this.orderBys);\n map.groupBys = this.groupBys.map(groupBy => groupBy);\n map.limit = this.limit;\n map.offset = this.offset;\n map.skip = this.skip;\n map.take = this.take;\n map.lockMode = this.lockMode;\n map.lockVersion = this.lockVersion;\n map.parameters = Object.assign({}, this.parameters);\n map.disableEscaping = this.disableEscaping;\n map.enableRelationIdValues = this.enableRelationIdValues;\n map.extraAppendedAndWhereCondition = this.extraAppendedAndWhereCondition;\n map.subQuery = this.subQuery;\n map.aliasNamePrefixingEnabled = this.aliasNamePrefixingEnabled;\n map.cache = this.cache;\n map.cacheId = this.cacheId;\n map.cacheDuration = this.cacheDuration;\n map.relationPropertyPath = this.relationPropertyPath;\n map.of = this.of;\n map.insertColumns = this.insertColumns;\n map.whereEntities = this.whereEntities;\n map.updateEntity = this.updateEntity;\n map.callListeners = this.callListeners;\n map.useTransaction = this.useTransaction;\n map.nativeParameters = Object.assign({}, this.nativeParameters);\n return map;\n }\n\n}\n"],"sourceRoot":".."} |