Data Queue APIs--Categories - FTP Directory Listing - IBM

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User Index APIs User Index APIs This section describes the user index APIs, which allow you to: ● Create and delete user indexes ● Add, retrieve, and remove user index entries ● Retrieve the attributes of a user index A user index is an object that allows search functions for data in the index and automatically sorts data based on the value of the data. User indexes are permanent objects in the user domain or in the system domain. They have an object type of *USRIDX and a maximum size of 4 gigabytes (4 294 967 296 bytes). They help streamline table searching, cross-referencing, and ordering of data. In general, if your table is longer than 1000 entries, an index performs faster than a user-sorted table. You can use user indexes to: ● Provide search functions ● Do faster insert operations than in a database file ● Do faster retrieve operations than in a database file ● Create an index by name, such as a telephone directory ● Use order entry programs ● Look up abbreviations in an index ● Sort data automatically based on the hexadecimal value of a key For more information about user index considerations, refer to the System API Programming book. User index entries cannot contain a pointer. You can save and restore all the data in an index. You can also save and restore user indexes to another system. The user index APIs are: ● Add User Index Entries (QUSADDUI) allows you to add one or more new entries or replace existing entries into the user index. ● Create User Index (QUSCRTUI) creates a user index. ● Delete User Index (QUSDLTUI) deletes a user index. ● Remove User Index Entries (QUSRMVUI) removes one or more user index entries that match the remove criteria specified. ● Retrieve User Index Attributes (QUSRUIAT) retrieves information about the user index attributes, including when it was created. It also retrieves the current operational statistics of the user index. ● Retrieve User Index Entries (QUSRTVUI) retrieves user index entries that match the search criteria specified. In addition to using these APIs, you can work with user indexes through the following: ● ILE C programming language ● Machine interface (MI) instructions ● Delete User Index (DLTUSRIDX) command http://infocntr.rchland.ibm.com/pubs/html/as400/v4r5/ic2924/info/apis/obj4.htm (1 of 2) [10/4/1999 2:33:34 PM]
User Index APIs For details about MI instructions, see the Machine Interface Functional Reference book. For details about the DLTUSRIDX command, see the CL Reference (Abridged) book. Top | Object API categories | APIs by category [Information Center Home Page | Feedback ] [Legal | AS/400 Glossary] http://infocntr.rchland.ibm.com/pubs/html/as400/v4r5/ic2924/info/apis/obj4.htm (2 of 2) [10/4/1999 2:33:34 PM]
Page 1 and 2: Data Queue APIs--Categories Object
Page 3 and 4: Data Queue APIs ● Send to a Data
Page 5 and 6: Clear Data Queue (QCLRDTAQ) API Req
Page 7 and 8: Clear Data Queue (QCLRDTAQ) API An
Page 9 and 10: Receive Data Queue (QRCVDTAQ) API u
Page 11 and 12: Receive Data Queue (QRCVDTAQ) API A
Page 13 and 14: Receive Data Queue (QRCVDTAQ) API S
Page 15 and 16: Receive Data Queue (QRCVDTAQ) API C
Page 17 and 18: Retrieve Data Queue Description (QM
Page 25 and 26: Retrieve Data Queue Message (QMHRDQ
Page 33 and 34: Send Data Queue (QSNDDTAQ) API Requ
Page 35 and 36: Send Data Queue (QSNDDTAQ) API INPU
Page 37 and 38: User Queue APIs User Queue APIs Thi
Page 39 and 40: Create User Queue (QUSCRTUQ) API To
Page 41 and 42: Create User Queue (QUSCRTUQ) API Au
Page 43 and 44: Create User Queue (QUSCRTUQ) API Do
Page 45 and 46: Create User Queue (QUSCRTUQ) API Ex
Page 47 and 48: Delete User Queue (QUSDLTUQ) API De
Page 49: Delete User Queue (QUSDLTUQ) API CP
Page 53 and 54: Add User Index Entries (QUSADDUI) A
Page 59 and 60: Create User Index (QUSCRTUI) API Mo
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Change User Space Attributes (QUSCU
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Create User Space (QUSCRTUS) API Cr
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Create User Space (QUSCRTUS) API IN
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Create User Space (QUSCRTUS) API de
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Create User Space (QUSCRTUS) API CP
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Delete User Space (QUSDLTUS) API Q.
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Retrieve Pointer to User Space (QUS
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Retrieve Pointer to User Space (QUS
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Retrieve User Space (QUSRTVUS) API
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Retrieve User Space (QUSRTVUS) API
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Retrieve User Space Attributes (QUS
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Retrieve User Space Attributes (QUS
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Change Library List (QLICHGLL) API
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Change Library List (QLICHGLL) API
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Change Object Description (QLICOBJD
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Convert Type (QLICVTTP) API convers
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List Objects (QUSLOBJ) API Authorit
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List Objects (QUSLOBJ) API QRCL QUS
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List Objects (QUSLOBJ) API also can
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List Objects (QUSLOBJ) API any of t
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List Objects (QUSLOBJ) API *ANY Any
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List Objects (QUSLOBJ) API OBJL0200
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List Objects (QUSLOBJ) API 480 1E0
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List Objects (QUSLOBJ) API the list
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List Objects (QUSLOBJ) API Licensed
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List Objects (QUSLOBJ) API Temporar
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List Objects (QUSLOBJ) API Call lev
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Move Folder to ASP (QHSMMOVF) API M
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Rename Object (QLIRNMO) API Error M
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Rename Object (QLIRNMO) API CPF9811
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Retrieve Library Description (QLIRL
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