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Object APIs
Object APIs
You can use object APIs to obtain information about OS/400 objects. The object APIs and their functions
include the following:
● Change Library List (QLICHGLL) changes the current library, the two product libraries, and the
user part of the job's library list.
● Change Object Description (QLICOBJD) changes object information for a specific object.
● Convert Type (QLICVTTP) converts an object type to and from hexadecimal format.
● List Objects (QUSLOBJ) generates a list of object names and descriptive information based on the
specified parameters.
● Materialize Context (QusMaterializeContext) returns either the type and subtype of the object or
system pointers for all or for a selected set of objects that are contained by the context.
● Move Folder to ASP (QHSMMOVF) moves a root folder and its contents from its existing auxiliary
storage pool (ASP) to the specified target ASP through a save and restore process.
● Move Library to ASP (QHSMMOVL) moves a library and its contents from its existing auxiliary
storage pool (ASP) to the specified target ASP through a save and restore process.
● Open List of Objects (QGYOLOBJ) generates a list of object names and descriptive information
based on specified selection parameters.
● Rename Object (QLIRNMO) renames an existing object to a new object name or new library name
or both and optionally replaces the object.
● Retrieve Library Description (QLIRLIBD) retrieves attributes for a specific library.
● Retrieve Object Description (QUSROBJD) retrieves object information for a specific object.
The QUSLOBJ and QUSROBJD APIs return much of the same information. However, the APIs differ in
several respects:
● The APIs group the returned information differently among their output formats. For example, the
OBJL0300 format of the QUSLOBJ API does not contain exactly the same data as the OBJD0300
format of the QUSROBJD API.
● The APIs use different data formats for some specific items, such as dates and times.
● The APIs differ in efficiency, depending on your application. In most cases, the QUSROBJD API is
faster at retrieving information about a single object. The QUSLOBJ API is faster at retrieving
information about several objects.
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