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{ QueryBuilder } from \"./QueryBuilder\"\nimport { ObjectLiteral } from \"../common/ObjectLiteral\"\nimport { EntityTarget } from \"../common/EntityTarget\"\nimport { DataSource } from \"../data-source/DataSource\"\nimport { QueryRunner } from \"../query-runner/QueryRunner\"\nimport { WhereExpressionBuilder } from \"./WhereExpressionBuilder\"\nimport { Brackets } from \"./Brackets\"\nimport { DeleteResult } from \"./result/DeleteResult\"\nimport { ReturningStatementNotSupportedError } from \"../error/ReturningStatementNotSupportedError\"\nimport { InstanceChecker } from \"../util/InstanceChecker\"\n\n/**\n * Allows to build complex sql queries in a fashion way and execute those queries.\n */\nexport class DeleteQueryBuilder<Entity extends ObjectLiteral>\n    extends QueryBuilder<Entity>\n    implements WhereExpressionBuilder\n{\n    readonly \"@instanceof\" = Symbol.for(\"DeleteQueryBuilder\")\n\n    // -------------------------------------------------------------------------\n    // Constructor\n    // -------------------------------------------------------------------------\n\n    constructor(\n        connectionOrQueryBuilder: DataSource | QueryBuilder<any>,\n        queryRunner?: QueryRunner,\n    ) {\n        super(connectionOrQueryBuilder as any, queryRunner)\n        this.expressionMap.aliasNamePrefixingEnabled = false\n    }\n\n    // -------------------------------------------------------------------------\n    // Public Implemented Methods\n    // -------------------------------------------------------------------------\n\n    /**\n     * Gets generated SQL query without parameters being replaced.\n     */\n    getQuery(): string {\n        let sql = this.createComment()\n        sql += this.createCteExpression()\n        sql += this.createDeleteExpression()\n        return this.replacePropertyNamesForTheWholeQuery(sql.trim())\n    }\n\n    /**\n     * Executes sql generated by query builder and returns raw database results.\n     */\n    async execute(): Promise<DeleteResult> {\n        const [sql, parameters] = this.getQueryAndParameters()\n        const queryRunner = this.obtainQueryRunner()\n        let transactionStartedByUs: boolean = false\n\n        try {\n            // start transaction if it was enabled\n            if (\n                this.expressionMap.useTransaction === true &&\n                queryRunner.isTransactionActive === false\n            ) {\n                await queryRunner.startTransaction()\n                transactionStartedByUs = true\n            }\n\n            // call before deletion methods in listeners and subscribers\n            if (\n                this.expressionMap.callListeners === true &&\n                this.expressionMap.mainAlias!.hasMetadata\n            ) {\n                await queryRunner.broadcaster.broadcast(\n                    \"BeforeRemove\",\n                    this.expressionMap.mainAlias!.metadata,\n                )\n            }\n\n            // execute query\n            const queryResult = await queryRunner.query(sql, parameters, true)\n            const deleteResult = DeleteResult.from(queryResult)\n\n            // call after deletion methods in listeners and subscribers\n            if (\n                this.expressionMap.callListeners === true &&\n                this.expressionMap.mainAlias!.hasMetadata\n            ) {\n                await queryRunner.broadcaster.broadcast(\n                    \"AfterRemove\",\n                    this.expressionMap.mainAlias!.metadata,\n                )\n            }\n\n            // close transaction if we started it\n            if (transactionStartedByUs) await queryRunner.commitTransaction()\n\n            return deleteResult\n        } catch (error) {\n            // rollback transaction if we started it\n            if (transactionStartedByUs) {\n                try {\n                    await queryRunner.rollbackTransaction()\n                } catch (rollbackError) {}\n            }\n            throw error\n        } finally {\n            if (queryRunner !== this.queryRunner) {\n                // means we created our own query runner\n                await queryRunner.release()\n            }\n        }\n    }\n\n    // -------------------------------------------------------------------------\n    // Public Methods\n    // -------------------------------------------------------------------------\n\n    /**\n     * Specifies FROM which entity's table select/update/delete will be executed.\n     * Also sets a main string alias of the selection data.\n     */\n    from<T extends ObjectLiteral>(\n        entityTarget: EntityTarget<T>,\n        aliasName?: string,\n    ): DeleteQueryBuilder<T> {\n        entityTarget = InstanceChecker.isEntitySchema(entityTarget)\n            ? entityTarget.options.name\n            : entityTarget\n        const mainAlias = this.createFromAlias(entityTarget, aliasName)\n        this.expressionMap.setMainAlias(mainAlias)\n        return this as any as DeleteQueryBuilder<T>\n    }\n\n    /**\n     * Sets WHERE condition in the query builder.\n     * If you had previously WHERE expression defined,\n     * calling this function will override previously set WHERE conditions.\n     * Additionally you can add parameters used in where expression.\n     */\n    where(\n        where:\n            | Brackets\n            | string\n            | ((qb: this) => string)\n            | ObjectLiteral\n            | ObjectLiteral[],\n        parameters?: ObjectLiteral,\n    ): this {\n        this.expressionMap.wheres = [] // don't move this block below since computeWhereParameter can add where expressions\n        const condition = this.getWhereCondition(where)\n        if (condition)\n            this.expressionMap.wheres = [\n                { type: \"simple\", condition: condition },\n            ]\n        if (parameters) this.setParameters(parameters)\n        return this\n    }\n\n    /**\n     * Adds new AND WHERE condition in the query builder.\n     * Additionally you can add parameters used in where expression.\n     */\n    andWhere(\n        where:\n            | Brackets\n            | string\n            | ((qb: this) => string)\n            | ObjectLiteral\n            | ObjectLiteral[],\n        parameters?: ObjectLiteral,\n    ): this {\n        this.expressionMap.wheres.push({\n            type: \"and\",\n            condition: this.getWhereCondition(where),\n        })\n        if (parameters) this.setParameters(parameters)\n        return this\n    }\n\n    /**\n     * Adds new OR WHERE condition in the query builder.\n     * Additionally you can add parameters used in where expression.\n     */\n    orWhere(\n        where:\n            | Brackets\n            | string\n            | ((qb: this) => string)\n            | ObjectLiteral\n            | ObjectLiteral[],\n        parameters?: ObjectLiteral,\n    ): this {\n        this.expressionMap.wheres.push({\n            type: \"or\",\n            condition: this.getWhereCondition(where),\n        })\n        if (parameters) this.setParameters(parameters)\n        return this\n    }\n\n    /**\n     * Sets WHERE condition in the query builder with a condition for the given ids.\n     * If you had previously WHERE expression defined,\n     * calling this function will override previously set WHERE conditions.\n     */\n    whereInIds(ids: any | any[]): this {\n        return this.where(this.getWhereInIdsCondition(ids))\n    }\n\n    /**\n     * Adds new AND WHERE with conditions for the given ids.\n     */\n    andWhereInIds(ids: any | any[]): this {\n        return this.andWhere(this.getWhereInIdsCondition(ids))\n    }\n\n    /**\n     * Adds new OR WHERE with conditions for the given ids.\n     */\n    orWhereInIds(ids: any | any[]): this {\n        return this.orWhere(this.getWhereInIdsCondition(ids))\n    }\n    /**\n     * Optional returning/output clause.\n     * This will return given column values.\n     */\n    output(columns: string[]): this\n\n    /**\n     * Optional returning/output clause.\n     * Returning is a SQL string containing returning statement.\n     */\n    output(output: string): this\n\n    /**\n     * Optional returning/output clause.\n     */\n    output(output: string | string[]): this\n\n    /**\n     * Optional returning/output clause.\n     */\n    output(output: string | string[]): this {\n        return this.returning(output)\n    }\n\n    /**\n     * Optional returning/output clause.\n     * This will return given column values.\n     */\n    returning(columns: string[]): this\n\n    /**\n     * Optional returning/output clause.\n     * Returning is a SQL string containing returning statement.\n     */\n    returning(returning: string): this\n\n    /**\n     * Optional returning/output clause.\n     */\n    returning(returning: string | string[]): this\n\n    /**\n     * Optional returning/output clause.\n     */\n    returning(returning: string | string[]): this {\n        // not all databases support returning/output cause\n        if (!this.connection.driver.isReturningSqlSupported(\"delete\")) {\n            throw new ReturningStatementNotSupportedError()\n        }\n\n        this.expressionMap.returning = returning\n        return this\n    }\n\n    // -------------------------------------------------------------------------\n    // Protected Methods\n    // -------------------------------------------------------------------------\n\n    /**\n     * Creates DELETE express used to perform query.\n     */\n    protected createDeleteExpression() {\n        const tableName = this.getTableName(this.getMainTableName())\n        const whereExpression = this.createWhereExpression()\n        const returningExpression = this.createReturningExpression(\"delete\")\n\n        if (returningExpression === \"\") {\n            return `DELETE FROM ${tableName}${whereExpression}`\n        }\n        if (this.connection.driver.options.type === \"mssql\") {\n            return `DELETE FROM ${tableName} OUTPUT ${returningExpression}${whereExpression}`\n        }\n        return `DELETE FROM ${tableName}${whereExpression} RETURNING ${returningExpression}`\n    }\n}\n"],"sourceRoot":".."}