Version conflict checking to installable unit

摘要

According to an aspect of the present invention, there is provided a method, system, and computer program product for version conflict checking of installable units (IUs). The method includes receiving a request for version conflict checking of specified IU, the request including a version dependency relationship between IUs that are in a dependency relationship with the specified IU. A version dependency relationship between installed IUs is obtained. The version dependency relationship between the installed IUs is updated according to the version dependency relationships between the IUs that are in a dependency relationship with the specified IU. It is checked whether the specified IU has a version conflict with the updated version dependency relationship between the installed IUs.

主权项

1. A method for version conflict checking of installable units (IUs), the method comprising:
receiving, by a processor, a request for version conflict checking of a specified IU, the request comprising a version dependency relationship between IUs that are in a dependency relationship with the specified IU; obtaining the version dependency relationship between installed IUs, the version dependency relationship represented using a version dependency matrix, wherein:
each of a first row and a first column of the version dependency matrix represents a group of sequential IUs, and IUs in the first row are arranged in the same order as IUs in the first column;except for elements in the first row and first column, a diagonal element of the version dependency matrix represents an installation status of an IU in this row or column; and an element [IUn, IUc] in row n and column c of the version dependency matrix represents a dependency relationship value of an IU in the nth row and the 1st column on an IU in the 1st row and the cth column, wherein each of n and c is an integer greater than 1 and n is not equal to c; updating the version dependency relationship between the installed IUs based on the version dependency relationship between the IUs that are in the dependency relationship with the specified IU; and checking whether the specified IU has a version conflict with the updated version dependency relationship between the installed IUs.