You can override the host and port for the database connection to connect via a secure tunnel. The returned string includes temporary login credentials and sets the search path to a schema representing this app’s Data Table environment. Get a Postgres connection string for accessing this app’s Data Tables via SQL. When it ends, all write operations performed during it will be cancelled Functions get_connection_string(, ) _enter_() → instanceĪbort this transaction. Returns a downloadable Media object use its url property.Ĭreate a new ‘Transaction’ object Constructor Transaction() If you specify keyword arguments, you will retrieve only rows whose columns match those values.Įg: app_tables.table_1.search(name=‘John Smith’) Each dict contains the name and type of a column. Get the spec for the table as a list of dicts. Returns true if the table (or view) contains the provided row. Get the matching row from this data table, by its unique ID Returns None if no matching row exists, and raises an exception if more than one row matches.Įg: app_tables.table_1.get(name=‘John Smith’) Get a single matching row from the data table whose columns match the keyword arguments.
Use keyword arguments to specify view restrictions. Return a view on this table that can be written by client code. This does not give the client write access to other tables referred to by the table.Ĭlient_writable_cascade() → client writable view Return a view on the table that can be written by client code. Use keyword arguments to specify view restrictions Return a view on the table that can be read by client code. Use keyword arguments to specify column values. Standard line of carbon steel base plates available.Add a row to the data table. 75 SD and 76 SD for additional pipe roll designs. Be certain to order oversized rolls when insulation and protection saddle are required. Ordering: Specify pipe roll size, figure number, name and finish. 160 – 166A submittals for size of pipe roll. If used with pipe covering protection saddle, see Figs.If roll is to support bare pipe, select the size directly from nominal pipe size.Low coefficient of friction between pipe and resilient coated pipe roller.Corrosion resistant - for protection against severe weather conditions, moderate corrosive conditions such as marine atmospheres and weather resistant to ultra-violet radiation.Non conductive pipe rollers - prevent the passing of current from pipeline to structure.On all other sizes, the holes are inside of uprights (see dimension J).įeatures: Advantages of pipe rollers with a protective resilient coated covering.The two cored holes on sizes 2" to 6" are on outside of stand (see dotted lines and dimension J’).In addition, cored holes “N” at the four corners of the stand are provided for anchorage purposes.Two cored holes for anchorage bolts are provided on all sizes for fastening stands to structural supports, piers, floors, etc.Maximum Temperature: 400° F at roller, 300° F at resilient coated roller.Īpprovals: Complies with Federal Specification A-A-1192A (Type 44), WW-H-171-E (Type 45), ANSI/MSS SP-69 and MSS SP-58 (Type 44). Service: For support of pipe where longitudinal movement due to expansion and contraction may occur but where no vertical adjustment is required. Finish: Plain, Zinc Plated (Hot-Dip Galvanized optional) or Resilient Coated
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