ISOtracer: More robust and reliable database handling
ISOtracer our rapid 3-D piping model builder, stores the model and the isometric drawings in a single HDF5 database. This has not only proven to be an efficient approach, it is also a convenient approach as only a single file needs to be kept track of. The main drawback of this approach is that a piping model is lost if the database becomes corrupt. ISOtracer 2.1 brings some changes to reduce the probability of this from happening. Although database corruption was a rare issue, it could happen if the connection to the database was lost while one of more write operations were still outstanding. This could happen, for instance, if the database is located on a network file system and the network connection is (temporarily) lost while not all outstanding write operations have been completed.
To prevent this situation from occurring, ISOtracer 2.1 will open the database only temporarily whenever it needs to access the database, thereby reducing the time that write operations are issued by ISOtracer and have been handled at the database end. Care has been taken to implement this change in such a way that it does not affect the responsiveness of ISOtracer. This change, together with many other small changes, makes ISOtracer an even better tool for building 3-D piping models from isometric drawings.
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