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Your IP : 18.117.166.111
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{ ObjectLiteral } from \"../common/ObjectLiteral\"\nimport { DriverUtils } from \"../driver/DriverUtils\"\nimport { TypeORMError } from \"../error/TypeORMError\"\nimport { FindOptionsUtils } from \"../find-options/FindOptionsUtils\"\nimport { FindTreeOptions } from \"../find-options/FindTreeOptions\"\nimport { SelectQueryBuilder } from \"../query-builder/SelectQueryBuilder\"\nimport { TreeRepositoryUtils } from \"../util/TreeRepositoryUtils\"\nimport { Repository } from \"./Repository\"\n\n/**\n * Repository with additional functions to work with trees.\n *\n * @see Repository\n */\nexport class TreeRepository<\n Entity extends ObjectLiteral,\n> extends Repository<Entity> {\n // -------------------------------------------------------------------------\n // Public Methods\n // -------------------------------------------------------------------------\n\n /**\n * Gets complete trees for all roots in the table.\n */\n async findTrees(options?: FindTreeOptions): Promise<Entity[]> {\n const roots = await this.findRoots(options)\n await Promise.all(\n roots.map((root) => this.findDescendantsTree(root, options)),\n )\n return roots\n }\n\n /**\n * Roots are entities that have no ancestors. Finds them all.\n */\n findRoots(options?: FindTreeOptions): Promise<Entity[]> {\n const escapeAlias = (alias: string) =>\n this.manager.connection.driver.escape(alias)\n const escapeColumn = (column: string) =>\n this.manager.connection.driver.escape(column)\n\n const joinColumn = this.metadata.treeParentRelation!.joinColumns[0]\n const parentPropertyName =\n joinColumn.givenDatabaseName || joinColumn.databaseName\n\n const qb = this.createQueryBuilder(\"treeEntity\")\n FindOptionsUtils.applyOptionsToTreeQueryBuilder(qb, options)\n\n return qb\n .where(\n `${escapeAlias(\"treeEntity\")}.${escapeColumn(\n parentPropertyName,\n )} IS NULL`,\n )\n .getMany()\n }\n\n /**\n * Gets all children (descendants) of the given entity. Returns them all in a flat array.\n */\n findDescendants(\n entity: Entity,\n options?: FindTreeOptions,\n ): Promise<Entity[]> {\n const qb = this.createDescendantsQueryBuilder(\n \"treeEntity\",\n \"treeClosure\",\n entity,\n )\n FindOptionsUtils.applyOptionsToTreeQueryBuilder(qb, options)\n return qb.getMany()\n }\n\n /**\n * Gets all children (descendants) of the given entity. Returns them in a tree - nested into each other.\n */\n async findDescendantsTree(\n entity: Entity,\n options?: FindTreeOptions,\n ): Promise<Entity> {\n // todo: throw exception if there is no column of this relation?\n\n const qb: SelectQueryBuilder<Entity> =\n this.createDescendantsQueryBuilder(\n \"treeEntity\",\n \"treeClosure\",\n entity,\n )\n FindOptionsUtils.applyOptionsToTreeQueryBuilder(qb, options)\n\n const entities = await qb.getRawAndEntities()\n const relationMaps = TreeRepositoryUtils.createRelationMaps(\n this.manager,\n this.metadata,\n \"treeEntity\",\n entities.raw,\n )\n TreeRepositoryUtils.buildChildrenEntityTree(\n this.metadata,\n entity,\n entities.entities,\n relationMaps,\n {\n depth: -1,\n ...options,\n },\n )\n\n return entity\n }\n\n /**\n * Gets number of descendants of the entity.\n */\n countDescendants(entity: Entity): Promise<number> {\n return this.createDescendantsQueryBuilder(\n \"treeEntity\",\n \"treeClosure\",\n entity,\n ).getCount()\n }\n\n /**\n * Creates a query builder used to get descendants of the entities in a tree.\n */\n createDescendantsQueryBuilder(\n alias: string,\n closureTableAlias: string,\n entity: Entity,\n ): SelectQueryBuilder<Entity> {\n // create shortcuts for better readability\n const escape = (alias: string) =>\n this.manager.connection.driver.escape(alias)\n\n if (this.metadata.treeType === \"closure-table\") {\n const joinCondition =\n this.metadata.closureJunctionTable.descendantColumns\n .map((column) => {\n return (\n escape(closureTableAlias) +\n \".\" +\n escape(column.propertyPath) +\n \" = \" +\n escape(alias) +\n \".\" +\n escape(column.referencedColumn!.propertyPath)\n )\n })\n .join(\" AND \")\n\n const parameters: ObjectLiteral = {}\n const whereCondition =\n this.metadata.closureJunctionTable.ancestorColumns\n .map((column) => {\n parameters[column.referencedColumn!.propertyName] =\n column.referencedColumn!.getEntityValue(entity)\n return (\n escape(closureTableAlias) +\n \".\" +\n escape(column.propertyPath) +\n \" = :\" +\n column.referencedColumn!.propertyName\n )\n })\n .join(\" AND \")\n\n return this.createQueryBuilder(alias)\n .innerJoin(\n this.metadata.closureJunctionTable.tableName,\n closureTableAlias,\n joinCondition,\n )\n .where(whereCondition)\n .setParameters(parameters)\n } else if (this.metadata.treeType === \"nested-set\") {\n const whereCondition =\n alias +\n \".\" +\n this.metadata.nestedSetLeftColumn!.propertyPath +\n \" BETWEEN \" +\n \"joined.\" +\n this.metadata.nestedSetLeftColumn!.propertyPath +\n \" AND joined.\" +\n this.metadata.nestedSetRightColumn!.propertyPath\n const parameters: ObjectLiteral = {}\n const joinCondition = this.metadata\n .treeParentRelation!.joinColumns.map((joinColumn) => {\n const parameterName =\n joinColumn.referencedColumn!.propertyPath.replace(\n \".\",\n \"_\",\n )\n parameters[parameterName] =\n joinColumn.referencedColumn!.getEntityValue(entity)\n return (\n \"joined.\" +\n joinColumn.referencedColumn!.propertyPath +\n \" = :\" +\n parameterName\n )\n })\n .join(\" AND \")\n\n return this.createQueryBuilder(alias)\n .innerJoin(this.metadata.targetName, \"joined\", whereCondition)\n .where(joinCondition, parameters)\n } else if (this.metadata.treeType === \"materialized-path\") {\n return this.createQueryBuilder(alias).where((qb) => {\n const subQuery = qb\n .subQuery()\n .select(\n `${this.metadata.targetName}.${\n this.metadata.materializedPathColumn!.propertyPath\n }`,\n \"path\",\n )\n .from(this.metadata.target, this.metadata.targetName)\n .whereInIds(this.metadata.getEntityIdMap(entity))\n\n if (\n DriverUtils.isSQLiteFamily(this.manager.connection.driver)\n ) {\n return `${alias}.${\n this.metadata.materializedPathColumn!.propertyPath\n } LIKE ${subQuery.getQuery()} || '%'`\n } else {\n return `${alias}.${\n this.metadata.materializedPathColumn!.propertyPath\n } LIKE NULLIF(CONCAT(${subQuery.getQuery()}, '%'), '%')`\n }\n })\n }\n\n throw new TypeORMError(`Supported only in tree entities`)\n }\n\n /**\n * Gets all parents (ancestors) of the given entity. Returns them all in a flat array.\n */\n findAncestors(\n entity: Entity,\n options?: FindTreeOptions,\n ): Promise<Entity[]> {\n const qb = this.createAncestorsQueryBuilder(\n \"treeEntity\",\n \"treeClosure\",\n entity,\n )\n FindOptionsUtils.applyOptionsToTreeQueryBuilder(qb, options)\n return qb.getMany()\n }\n\n /**\n * Gets all parents (ancestors) of the given entity. Returns them in a tree - nested into each other.\n */\n async findAncestorsTree(\n entity: Entity,\n options?: FindTreeOptions,\n ): Promise<Entity> {\n // todo: throw exception if there is no column of this relation?\n const qb = this.createAncestorsQueryBuilder(\n \"treeEntity\",\n \"treeClosure\",\n entity,\n )\n FindOptionsUtils.applyOptionsToTreeQueryBuilder(qb, options)\n\n const entities = await qb.getRawAndEntities()\n const relationMaps = TreeRepositoryUtils.createRelationMaps(\n this.manager,\n this.metadata,\n \"treeEntity\",\n entities.raw,\n )\n TreeRepositoryUtils.buildParentEntityTree(\n this.metadata,\n entity,\n entities.entities,\n relationMaps,\n )\n return entity\n }\n\n /**\n * Gets number of ancestors of the entity.\n */\n countAncestors(entity: Entity): Promise<number> {\n return this.createAncestorsQueryBuilder(\n \"treeEntity\",\n \"treeClosure\",\n entity,\n ).getCount()\n }\n\n /**\n * Creates a query builder used to get ancestors of the entities in the tree.\n */\n createAncestorsQueryBuilder(\n alias: string,\n closureTableAlias: string,\n entity: Entity,\n ): SelectQueryBuilder<Entity> {\n // create shortcuts for better readability\n // const escape = (alias: string) => this.manager.connection.driver.escape(alias);\n\n if (this.metadata.treeType === \"closure-table\") {\n const joinCondition =\n this.metadata.closureJunctionTable.ancestorColumns\n .map((column) => {\n return (\n closureTableAlias +\n \".\" +\n column.propertyPath +\n \" = \" +\n alias +\n \".\" +\n column.referencedColumn!.propertyPath\n )\n })\n .join(\" AND \")\n\n const parameters: ObjectLiteral = {}\n const whereCondition =\n this.metadata.closureJunctionTable.descendantColumns\n .map((column) => {\n parameters[column.referencedColumn!.propertyName] =\n column.referencedColumn!.getEntityValue(entity)\n return (\n closureTableAlias +\n \".\" +\n column.propertyPath +\n \" = :\" +\n column.referencedColumn!.propertyName\n )\n })\n .join(\" AND \")\n\n return this.createQueryBuilder(alias)\n .innerJoin(\n this.metadata.closureJunctionTable.tableName,\n closureTableAlias,\n joinCondition,\n )\n .where(whereCondition)\n .setParameters(parameters)\n } else if (this.metadata.treeType === \"nested-set\") {\n const joinCondition =\n \"joined.\" +\n this.metadata.nestedSetLeftColumn!.propertyPath +\n \" BETWEEN \" +\n alias +\n \".\" +\n this.metadata.nestedSetLeftColumn!.propertyPath +\n \" AND \" +\n alias +\n \".\" +\n this.metadata.nestedSetRightColumn!.propertyPath\n const parameters: ObjectLiteral = {}\n const whereCondition = this.metadata\n .treeParentRelation!.joinColumns.map((joinColumn) => {\n const parameterName =\n joinColumn.referencedColumn!.propertyPath.replace(\n \".\",\n \"_\",\n )\n parameters[parameterName] =\n joinColumn.referencedColumn!.getEntityValue(entity)\n return (\n \"joined.\" +\n joinColumn.referencedColumn!.propertyPath +\n \" = :\" +\n parameterName\n )\n })\n .join(\" AND \")\n\n return this.createQueryBuilder(alias)\n .innerJoin(this.metadata.targetName, \"joined\", joinCondition)\n .where(whereCondition, parameters)\n } else if (this.metadata.treeType === \"materialized-path\") {\n // example: SELECT * FROM category category WHERE (SELECT mpath FROM `category` WHERE id = 2) LIKE CONCAT(category.mpath, '%');\n return this.createQueryBuilder(alias).where((qb) => {\n const subQuery = qb\n .subQuery()\n .select(\n `${this.metadata.targetName}.${\n this.metadata.materializedPathColumn!.propertyPath\n }`,\n \"path\",\n )\n .from(this.metadata.target, this.metadata.targetName)\n .whereInIds(this.metadata.getEntityIdMap(entity))\n\n if (\n DriverUtils.isSQLiteFamily(this.manager.connection.driver)\n ) {\n return `${subQuery.getQuery()} LIKE ${alias}.${\n this.metadata.materializedPathColumn!.propertyPath\n } || '%'`\n } else {\n return `${subQuery.getQuery()} LIKE CONCAT(${alias}.${\n this.metadata.materializedPathColumn!.propertyPath\n }, '%')`\n }\n })\n }\n\n throw new TypeORMError(`Supported only in tree entities`)\n }\n\n /**\n * Moves entity to the children of then given entity.\n *\n move(entity: Entity, to: Entity): Promise<void> {\n return Promise.resolve();\n } */\n}\n"],"sourceRoot":".."}