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{ Subject } from \"../Subject\"\nimport { QueryRunner } from \"../../query-runner/QueryRunner\"\nimport { ObjectLiteral } from \"../../common/ObjectLiteral\"\nimport { CannotAttachTreeChildrenEntityError } from \"../../error/CannotAttachTreeChildrenEntityError\"\nimport { DeleteQueryBuilder } from \"../../query-builder/DeleteQueryBuilder\"\nimport { OrmUtils } from \"../../util/OrmUtils\"\nimport { ColumnMetadata } from \"../../metadata/ColumnMetadata\"\n\n/**\n * Executes subject operations for closure entities.\n */\nexport class ClosureSubjectExecutor {\n    // -------------------------------------------------------------------------\n    // Constructor\n    // -------------------------------------------------------------------------\n\n    constructor(protected queryRunner: QueryRunner) {}\n\n    // -------------------------------------------------------------------------\n    // Public Methods\n    // -------------------------------------------------------------------------\n\n    /**\n     * Executes operations when subject is being inserted.\n     */\n    async insert(subject: Subject): Promise<void> {\n        // create values to be inserted into the closure junction\n        const closureJunctionInsertMap: ObjectLiteral = {}\n        subject.metadata.closureJunctionTable.ancestorColumns.forEach(\n            (column) => {\n                closureJunctionInsertMap[column.databaseName] =\n                    subject.identifier\n            },\n        )\n        subject.metadata.closureJunctionTable.descendantColumns.forEach(\n            (column) => {\n                closureJunctionInsertMap[column.databaseName] =\n                    subject.identifier\n            },\n        )\n\n        // insert values into the closure junction table\n        await this.queryRunner.manager\n            .createQueryBuilder()\n            .insert()\n            .into(subject.metadata.closureJunctionTable.tablePath)\n            .values(closureJunctionInsertMap)\n            .updateEntity(false)\n            .callListeners(false)\n            .execute()\n\n        let parent = subject.metadata.treeParentRelation!.getEntityValue(\n            subject.entity!,\n        ) // if entity was attached via parent\n        if (!parent && subject.parentSubject && subject.parentSubject.entity)\n            // if entity was attached via children\n            parent = subject.parentSubject.insertedValueSet\n                ? subject.parentSubject.insertedValueSet\n                : subject.parentSubject.entity\n\n        if (parent) {\n            const escape = (alias: string) =>\n                this.queryRunner.connection.driver.escape(alias)\n            const tableName = this.getTableName(\n                subject.metadata.closureJunctionTable.tablePath,\n            )\n            const queryParams: any[] = []\n\n            const ancestorColumnNames =\n                subject.metadata.closureJunctionTable.ancestorColumns.map(\n                    (column) => {\n                        return escape(column.databaseName)\n                    },\n                )\n            const descendantColumnNames =\n                subject.metadata.closureJunctionTable.descendantColumns.map(\n                    (column) => {\n                        return escape(column.databaseName)\n                    },\n                )\n            const childEntityIds1 = subject.metadata.primaryColumns.map(\n                (column) => {\n                    queryParams.push(\n                        column.getEntityValue(\n                            subject.insertedValueSet\n                                ? subject.insertedValueSet\n                                : subject.entity!,\n                        ),\n                    )\n                    return this.queryRunner.connection.driver.createParameter(\n                        \"child_entity_\" + column.databaseName,\n                        queryParams.length - 1,\n                    )\n                },\n            )\n\n            const whereCondition =\n                subject.metadata.closureJunctionTable.descendantColumns.map(\n                    (column) => {\n                        const columnName = escape(column.databaseName)\n                        const parentId =\n                            column.referencedColumn!.getEntityValue(parent)\n\n                        if (!parentId)\n                            throw new CannotAttachTreeChildrenEntityError(\n                                subject.metadata.name,\n                            )\n\n                        queryParams.push(parentId)\n                        const parameterName =\n                            this.queryRunner.connection.driver.createParameter(\n                                \"parent_entity_\" +\n                                    column.referencedColumn!.databaseName,\n                                queryParams.length - 1,\n                            )\n                        return `${columnName} = ${parameterName}`\n                    },\n                )\n\n            await this.queryRunner.query(\n                `INSERT INTO ${tableName} (${[\n                    ...ancestorColumnNames,\n                    ...descendantColumnNames,\n                ].join(\", \")}) ` +\n                    `SELECT ${ancestorColumnNames.join(\n                        \", \",\n                    )}, ${childEntityIds1.join(\n                        \", \",\n                    )} FROM ${tableName} WHERE ${whereCondition.join(\" AND \")}`,\n                queryParams,\n            )\n        }\n    }\n\n    /**\n     * Executes operations when subject is being updated.\n     */\n    async update(subject: Subject): Promise<void> {\n        let parent = subject.metadata.treeParentRelation!.getEntityValue(\n            subject.entity!,\n        ) // if entity was attached via parent\n        if (!parent && subject.parentSubject && subject.parentSubject.entity)\n            // if entity was attached via children\n            parent = subject.parentSubject.entity\n\n        let entity = subject.databaseEntity // if entity was attached via parent\n        if (!entity && parent)\n            // if entity was attached via children\n            entity = subject.metadata\n                .treeChildrenRelation!.getEntityValue(parent)\n                .find((child: any) => {\n                    return Object.entries(subject.identifier!).every(\n                        ([key, value]) => child[key] === value,\n                    )\n                })\n\n        // Exit if the parent or the entity where never set\n        if (entity === undefined || parent === undefined) {\n            return\n        }\n\n        const oldParent = subject.metadata.treeParentRelation!.getEntityValue(\n            entity!,\n        )\n        const oldParentId = subject.metadata.getEntityIdMap(oldParent)\n        const parentId = subject.metadata.getEntityIdMap(parent)\n\n        // Exit if the new and old parents are the same\n        if (OrmUtils.compareIds(oldParentId, parentId)) {\n            return\n        }\n\n        const escape = (alias: string) =>\n            this.queryRunner.connection.driver.escape(alias)\n        const closureTable = subject.metadata.closureJunctionTable\n\n        const ancestorColumnNames = closureTable.ancestorColumns.map(\n            (column) => {\n                return escape(column.databaseName)\n            },\n        )\n\n        const descendantColumnNames = closureTable.descendantColumns.map(\n            (column) => {\n                return escape(column.databaseName)\n            },\n        )\n\n        // Delete logic\n        const createSubQuery = (qb: DeleteQueryBuilder<any>, alias: string) => {\n            const subAlias = `sub${alias}`\n\n            const subSelect = qb\n                .createQueryBuilder()\n                .select(descendantColumnNames.join(\", \"))\n                .from(closureTable.tablePath, subAlias)\n\n            // Create where conditions e.g. (WHERE \"subdescendant\".\"id_ancestor\" = :value_id)\n            for (const column of closureTable.ancestorColumns) {\n                subSelect.andWhere(\n                    `${escape(subAlias)}.${escape(\n                        column.databaseName,\n                    )} = :value_${column.referencedColumn!.databaseName}`,\n                )\n            }\n\n            return qb\n                .createQueryBuilder()\n                .select(descendantColumnNames.join(\", \"))\n                .from(`(${subSelect.getQuery()})`, alias)\n                .setParameters(subSelect.getParameters())\n                .getQuery()\n        }\n\n        const parameters: ObjectLiteral = {}\n        for (const column of subject.metadata.primaryColumns) {\n            parameters[`value_${column.databaseName}`] =\n                entity![column.databaseName]\n        }\n\n        await this.queryRunner.manager\n            .createQueryBuilder()\n            .delete()\n            .from(closureTable.tablePath)\n            .where(\n                (qb) =>\n                    `(${descendantColumnNames.join(\", \")}) IN (${createSubQuery(\n                        qb,\n                        \"descendant\",\n                    )})`,\n            )\n            .andWhere(\n                (qb) =>\n                    `(${ancestorColumnNames.join(\n                        \", \",\n                    )}) NOT IN (${createSubQuery(qb, \"ancestor\")})`,\n            )\n            .setParameters(parameters)\n            .execute()\n\n        /**\n         * Only insert new parent if it exits\n         *\n         * This only happens if the entity doesn't become a root entity\n         */\n        if (parent) {\n            // Insert logic\n            const queryParams: any[] = []\n\n            const tableName = this.getTableName(closureTable.tablePath)\n            const superAlias = escape(\"supertree\")\n            const subAlias = escape(\"subtree\")\n\n            const select = [\n                ...ancestorColumnNames.map(\n                    (columnName) => `${superAlias}.${columnName}`,\n                ),\n                ...descendantColumnNames.map(\n                    (columnName) => `${subAlias}.${columnName}`,\n                ),\n            ]\n\n            const entityWhereCondition =\n                subject.metadata.closureJunctionTable.ancestorColumns.map(\n                    (column) => {\n                        const columnName = escape(column.databaseName)\n                        const entityId =\n                            column.referencedColumn!.getEntityValue(entity!)\n\n                        queryParams.push(entityId)\n                        const parameterName =\n                            this.queryRunner.connection.driver.createParameter(\n                                \"entity_\" +\n                                    column.referencedColumn!.databaseName,\n                                queryParams.length - 1,\n                            )\n                        return `${subAlias}.${columnName} = ${parameterName}`\n                    },\n                )\n\n            const parentWhereCondition =\n                subject.metadata.closureJunctionTable.descendantColumns.map(\n                    (column) => {\n                        const columnName = escape(column.databaseName)\n                        const parentId =\n                            column.referencedColumn!.getEntityValue(parent)\n\n                        if (!parentId)\n                            throw new CannotAttachTreeChildrenEntityError(\n                                subject.metadata.name,\n                            )\n\n                        queryParams.push(parentId)\n                        const parameterName =\n                            this.queryRunner.connection.driver.createParameter(\n                                \"parent_entity_\" +\n                                    column.referencedColumn!.databaseName,\n                                queryParams.length - 1,\n                            )\n                        return `${superAlias}.${columnName} = ${parameterName}`\n                    },\n                )\n\n            await this.queryRunner.query(\n                `INSERT INTO ${tableName} (${[\n                    ...ancestorColumnNames,\n                    ...descendantColumnNames,\n                ].join(\", \")}) ` +\n                    `SELECT ${select.join(\", \")} ` +\n                    `FROM ${tableName} AS ${superAlias}, ${tableName} AS ${subAlias} ` +\n                    `WHERE ${[\n                        ...entityWhereCondition,\n                        ...parentWhereCondition,\n                    ].join(\" AND \")}`,\n                queryParams,\n            )\n        }\n    }\n\n    /**\n     * Executes operations when subject is being removed.\n     */\n    async remove(subjects: Subject | Subject[]): Promise<void> {\n        // Only mssql need to execute deletes for the juntion table as it doesn't support multi cascade paths.\n        if (!(this.queryRunner.connection.driver.options.type === \"mssql\")) {\n            return\n        }\n\n        if (!Array.isArray(subjects)) subjects = [subjects]\n\n        const escape = (alias: string) =>\n            this.queryRunner.connection.driver.escape(alias)\n        const identifiers = subjects.map((subject) => subject.identifier)\n        const closureTable = subjects[0].metadata.closureJunctionTable\n\n        const generateWheres = (columns: ColumnMetadata[]) => {\n            return columns\n                .map((column) => {\n                    const data = identifiers.map(\n                        (identifier) =>\n                            identifier![column.referencedColumn!.databaseName],\n                    )\n                    return `${escape(column.databaseName)} IN (${data.join(\n                        \", \",\n                    )})`\n                })\n                .join(\" AND \")\n        }\n\n        const ancestorWhere = generateWheres(closureTable.ancestorColumns)\n        const descendantWhere = generateWheres(closureTable.descendantColumns)\n\n        await this.queryRunner.manager\n            .createQueryBuilder()\n            .delete()\n            .from(closureTable.tablePath)\n            .where(ancestorWhere)\n            .orWhere(descendantWhere)\n            .execute()\n    }\n\n    /**\n     * Gets escaped table name with schema name if SqlServer or Postgres driver used with custom\n     * schema name, otherwise returns escaped table name.\n     */\n    protected getTableName(tablePath: string): string {\n        return tablePath\n            .split(\".\")\n            .map((i) => {\n                // this condition need because in SQL Server driver when custom database name was specified and schema name was not, we got `dbName..tableName` string, and doesn't need to escape middle empty string\n                return i === \"\"\n                    ? i\n                    : this.queryRunner.connection.driver.escape(i)\n            })\n            .join(\".\")\n    }\n}\n"],"sourceRoot":"../.."}