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{PostgresConnectionOptions} from \"../driver/postgres/PostgresConnectionOptions\";\nimport {Query} from \"../driver/Query\";\nimport {SqlInMemory} from \"../driver/SqlInMemory\";\nimport {SqlServerConnectionOptions} from \"../driver/sqlserver/SqlServerConnectionOptions\";\nimport {View} from \"../schema-builder/view/View\";\nimport {PromiseUtils} from \"../util/PromiseUtils\";\nimport {Connection} from \"../connection/Connection\";\nimport {Table} from \"../schema-builder/table/Table\";\nimport {EntityManager} from \"../entity-manager/EntityManager\";\nimport {TableColumn} from \"../schema-builder/table/TableColumn\";\nimport {Broadcaster} from \"../subscriber/Broadcaster\";\n\nexport abstract class BaseQueryRunner {\n\n // -------------------------------------------------------------------------\n // Public Properties\n // -------------------------------------------------------------------------\n\n /**\n * Connection used by this query runner.\n */\n connection: Connection;\n\n /**\n * Entity manager working only with current query runner.\n */\n manager: EntityManager;\n\n /**\n * Indicates if connection for this query runner is released.\n * Once its released, query runner cannot run queries anymore.\n */\n isReleased = false;\n\n /**\n * Indicates if transaction is in progress.\n */\n isTransactionActive = false;\n\n /**\n * Stores temporarily user data.\n * Useful for sharing data with subscribers.\n */\n data = {};\n\n /**\n * All synchronized tables in the database.\n */\n loadedTables: Table[] = [];\n\n /**\n * All synchronized views in the database.\n */\n loadedViews: View[] = [];\n\n /**\n * Broadcaster used on this query runner to broadcast entity events.\n */\n broadcaster: Broadcaster;\n\n // -------------------------------------------------------------------------\n // Protected Properties\n // -------------------------------------------------------------------------\n\n /**\n * Real database connection from a connection pool used to perform queries.\n */\n protected databaseConnection: any;\n\n /**\n * Indicates if special query runner mode in which sql queries won't be executed is enabled.\n */\n protected sqlMemoryMode: boolean = false;\n\n /**\n * Sql-s stored if \"sql in memory\" mode is enabled.\n */\n protected sqlInMemory: SqlInMemory = new SqlInMemory();\n\n /**\n * Mode in which query runner executes.\n * Used for replication.\n * If replication is not setup its value is ignored.\n */\n protected mode: \"master\"|\"slave\";\n\n // -------------------------------------------------------------------------\n // Public Abstract Methods\n // -------------------------------------------------------------------------\n\n /**\n * Executes a given SQL query.\n */\n abstract query(query: string, parameters?: any[]): Promise<any>;\n\n // -------------------------------------------------------------------------\n // Protected Abstract Methods\n // -------------------------------------------------------------------------\n\n protected abstract async loadTables(tablePaths: string[]): Promise<Table[]>;\n\n protected abstract async loadViews(tablePaths: string[]): Promise<View[]>;\n\n // -------------------------------------------------------------------------\n // Public Methods\n // -------------------------------------------------------------------------\n\n /**\n * Loads given table's data from the database.\n */\n async getTable(tablePath: string): Promise<Table|undefined> {\n this.loadedTables = await this.loadTables([tablePath]);\n return this.loadedTables.length > 0 ? this.loadedTables[0] : undefined;\n }\n\n /**\n * Loads all tables (with given names) from the database.\n */\n async getTables(tableNames: string[]): Promise<Table[]> {\n this.loadedTables = await this.loadTables(tableNames);\n return this.loadedTables;\n }\n\n /**\n * Loads given view's data from the database.\n */\n async getView(viewPath: string): Promise<View|undefined> {\n this.loadedViews = await this.loadViews([viewPath]);\n return this.loadedViews.length > 0 ? this.loadedViews[0] : undefined;\n }\n\n /**\n * Loads given view's data from the database.\n */\n async getViews(viewPaths: string[]): Promise<View[]> {\n this.loadedViews = await this.loadViews(viewPaths);\n return this.loadedViews;\n }\n\n /**\n * Enables special query runner mode in which sql queries won't be executed,\n * instead they will be memorized into a special variable inside query runner.\n * You can get memorized sql using getMemorySql() method.\n */\n enableSqlMemory(): void {\n this.sqlInMemory = new SqlInMemory();\n this.sqlMemoryMode = true;\n }\n\n /**\n * Disables special query runner mode in which sql queries won't be executed\n * started by calling enableSqlMemory() method.\n *\n * Previously memorized sql will be flushed.\n */\n disableSqlMemory(): void {\n this.sqlInMemory = new SqlInMemory();\n this.sqlMemoryMode = false;\n }\n\n /**\n * Flushes all memorized sqls.\n */\n clearSqlMemory(): void {\n this.sqlInMemory = new SqlInMemory();\n }\n\n /**\n * Gets sql stored in the memory. Parameters in the sql are already replaced.\n */\n getMemorySql(): SqlInMemory {\n return this.sqlInMemory;\n }\n\n /**\n * Executes up sql queries.\n */\n async executeMemoryUpSql(): Promise<void> {\n await PromiseUtils.runInSequence(this.sqlInMemory.upQueries, upQuery => this.query(upQuery.query, upQuery.parameters));\n }\n\n /**\n * Executes down sql queries.\n */\n async executeMemoryDownSql(): Promise<void> {\n await PromiseUtils.runInSequence(this.sqlInMemory.downQueries.reverse(), downQuery => this.query(downQuery.query, downQuery.parameters));\n }\n\n // -------------------------------------------------------------------------\n // Protected Methods\n // -------------------------------------------------------------------------\n\n /**\n * Gets view from previously loaded views, otherwise loads it from database.\n */\n protected async getCachedView(viewName: string): Promise<View> {\n const view = this.loadedViews.find(view => view.name === viewName);\n if (view) return view;\n\n const foundViews = await this.loadViews([viewName]);\n if (foundViews.length > 0) {\n this.loadedViews.push(foundViews[0]);\n return foundViews[0];\n } else {\n throw new Error(`View \"${viewName}\" does not exist.`);\n }\n }\n\n /**\n * Gets table from previously loaded tables, otherwise loads it from database.\n */\n protected async getCachedTable(tableName: string): Promise<Table> {\n const table = this.loadedTables.find(table => table.name === tableName);\n if (table) return table;\n\n const foundTables = await this.loadTables([tableName]);\n if (foundTables.length > 0) {\n this.loadedTables.push(foundTables[0]);\n return foundTables[0];\n } else {\n throw new Error(`Table \"${tableName}\" does not exist.`);\n }\n }\n\n /**\n * Replaces loaded table with given changed table.\n */\n protected replaceCachedTable(table: Table, changedTable: Table): void {\n const foundTable = this.loadedTables.find(loadedTable => loadedTable.name === table.name);\n if (foundTable) {\n foundTable.name = changedTable.name;\n foundTable.columns = changedTable.columns;\n foundTable.indices = changedTable.indices;\n foundTable.foreignKeys = changedTable.foreignKeys;\n foundTable.uniques = changedTable.uniques;\n foundTable.checks = changedTable.checks;\n foundTable.justCreated = changedTable.justCreated;\n foundTable.engine = changedTable.engine;\n }\n }\n\n protected getTypeormMetadataTableName(): string {\n const options = <SqlServerConnectionOptions|PostgresConnectionOptions>this.connection.driver.options;\n return this.connection.driver.buildTableName(\"typeorm_metadata\", options.schema, options.database);\n }\n\n /**\n * Checks if at least one of column properties was changed.\n * Does not checks column type, length and autoincrement, because these properties changes separately.\n */\n protected isColumnChanged(oldColumn: TableColumn, newColumn: TableColumn, checkDefault?: boolean, checkComment?: boolean): boolean {\n // this logs need to debug issues in column change detection. Do not delete it!\n\n // console.log(\"charset ---------------\");\n // console.log(oldColumn.charset !== newColumn.charset);\n // console.log(oldColumn.charset, newColumn.charset);\n // console.log(\"collation ---------------\");\n // console.log(oldColumn.collation !== newColumn.collation);\n // console.log(oldColumn.collation, newColumn.collation);\n // console.log(\"precision ---------------\");\n // console.log(oldColumn.precision !== newColumn.precision);\n // console.log(oldColumn.precision, newColumn.precision);\n // console.log(\"scale ---------------\");\n // console.log(oldColumn.scale !== newColumn.scale);\n // console.log(oldColumn.scale, newColumn.scale);\n // console.log(\"default ---------------\");\n // console.log((checkDefault && oldColumn.default !== newColumn.default));\n // console.log(oldColumn.default, newColumn.default);\n // console.log(\"isNullable ---------------\");\n // console.log(oldColumn.isNullable !== newColumn.isNullable);\n // console.log(oldColumn.isNullable, newColumn.isNullable);\n // console.log(\"comment ---------------\");\n // console.log((checkComment && oldColumn.comment !== newColumn.comment));\n // console.log(oldColumn.comment, newColumn.comment);\n // console.log(\"enum ---------------\");\n // console.log(oldColumn.enum !== newColumn.enum);\n // console.log(oldColumn.enum, newColumn.enum);\n\n return oldColumn.charset !== newColumn.charset\n || oldColumn.collation !== newColumn.collation\n || oldColumn.precision !== newColumn.precision\n || oldColumn.scale !== newColumn.scale\n || oldColumn.width !== newColumn.width // MySQL only\n || oldColumn.zerofill !== newColumn.zerofill // MySQL only\n || oldColumn.unsigned !== newColumn.unsigned // MySQL only\n || oldColumn.asExpression !== newColumn.asExpression // MySQL only\n || (checkDefault && oldColumn.default !== newColumn.default)\n || oldColumn.onUpdate !== newColumn.onUpdate // MySQL only\n || oldColumn.isNullable !== newColumn.isNullable\n || (checkComment && oldColumn.comment !== newColumn.comment)\n || oldColumn.enum !== newColumn.enum;\n }\n\n /**\n * Checks if column length is by default.\n */\n protected isDefaultColumnLength(table: Table, column: TableColumn, length: string): boolean {\n // if table have metadata, we check if length is specified in column metadata\n if (this.connection.hasMetadata(table.name)) {\n const metadata = this.connection.getMetadata(table.name);\n const columnMetadata = metadata.findColumnWithDatabaseName(column.name);\n if (columnMetadata && columnMetadata.length)\n return false;\n }\n\n if (this.connection.driver.dataTypeDefaults\n && this.connection.driver.dataTypeDefaults[column.type]\n && this.connection.driver.dataTypeDefaults[column.type].length) {\n return this.connection.driver.dataTypeDefaults[column.type].length!.toString() === length.toString();\n }\n\n return false;\n }\n\n /**\n * Checks if column display width is by default. Used only for MySQL.\n */\n protected isDefaultColumnWidth(table: Table, column: TableColumn, width: number): boolean {\n // if table have metadata, we check if length is specified in column metadata\n if (this.connection.hasMetadata(table.name)) {\n const metadata = this.connection.getMetadata(table.name);\n const columnMetadata = metadata.findColumnWithDatabaseName(column.name);\n if (columnMetadata && columnMetadata.width)\n return false;\n }\n\n if (this.connection.driver.dataTypeDefaults\n && this.connection.driver.dataTypeDefaults[column.type]\n && this.connection.driver.dataTypeDefaults[column.type].width) {\n return this.connection.driver.dataTypeDefaults[column.type].width === width;\n }\n\n return false;\n }\n\n /**\n * Checks if column precision is by default.\n */\n protected isDefaultColumnPrecision(table: Table, column: TableColumn, precision: number): boolean {\n // if table have metadata, we check if length is specified in column metadata\n if (this.connection.hasMetadata(table.name)) {\n const metadata = this.connection.getMetadata(table.name);\n const columnMetadata = metadata.findColumnWithDatabaseName(column.name);\n if (columnMetadata && columnMetadata.precision !== null && columnMetadata.precision !== undefined)\n return false;\n }\n\n if (this.connection.driver.dataTypeDefaults\n && this.connection.driver.dataTypeDefaults[column.type]\n && this.connection.driver.dataTypeDefaults[column.type].precision !== null\n && this.connection.driver.dataTypeDefaults[column.type].precision !== undefined)\n return this.connection.driver.dataTypeDefaults[column.type].precision === precision;\n\n return false;\n }\n\n /**\n * Checks if column scale is by default.\n */\n protected isDefaultColumnScale(table: Table, column: TableColumn, scale: number): boolean {\n // if table have metadata, we check if length is specified in column metadata\n if (this.connection.hasMetadata(table.name)) {\n const metadata = this.connection.getMetadata(table.name);\n const columnMetadata = metadata.findColumnWithDatabaseName(column.name);\n if (columnMetadata && columnMetadata.scale !== null && columnMetadata.scale !== undefined)\n return false;\n }\n\n if (this.connection.driver.dataTypeDefaults\n && this.connection.driver.dataTypeDefaults[column.type]\n && this.connection.driver.dataTypeDefaults[column.type].scale !== null\n && this.connection.driver.dataTypeDefaults[column.type].scale !== undefined)\n return this.connection.driver.dataTypeDefaults[column.type].scale === scale;\n\n return false;\n }\n\n /**\n * Executes sql used special for schema build.\n */\n protected async executeQueries(upQueries: Query|Query[], downQueries: Query|Query[]): Promise<void> {\n if (upQueries instanceof Query)\n upQueries = [upQueries];\n if (downQueries instanceof Query)\n downQueries = [downQueries];\n\n this.sqlInMemory.upQueries.push(...upQueries);\n this.sqlInMemory.downQueries.push(...downQueries);\n\n // if sql-in-memory mode is enabled then simply store sql in memory and return\n if (this.sqlMemoryMode === true)\n return Promise.resolve() as Promise<any>;\n\n await PromiseUtils.runInSequence(upQueries, upQuery => this.query(upQuery.query, upQuery.parameters));\n }\n\n}\n"],"sourceRoot":".."} |