Before you add limit options to the index definition, you need to create one or more group limits. A group limit defines the specific data by which search results will be limited. A group limit can include one or more pieces of data, such as one or more collection codes (from item or copy records), or one or more language codes (from bib records). For example, you might create a group limit called “Kids Books” that includes all the collection codes for juvenile books. Even though the name implies more than one, you can create group limits that include only one piece of data (such as a single collection code), as needed.
While Horizon Index Services supports group limits that combine data of the same type, it does not support group limits that combine data of different types. (For example, you cannot use a group limit that combines a collection code and a location code.) However, you can combine limits of different types later in Information Portal. (For more information, see the Information Portal System Administrator’s Guide.) Horizon will not prevent you from creating a group limit that combines data of different types, but such limits will not work.
Combining limit data at the index level results in faster searching than if you wait and combine limits later in Information Portal. This means that you should define group limits for all the combinations of the same data type that you want. Then use Information Portal to combine limits of different data types.
To create group limit definitions
1 | Open the group_limit view in the Table Editor. |
Horizon displays the List Word Index Group Limit Definitions window.
2 | Choose the group limit definition you want to change, or create a new group limit definition. |
Horizon displays the Edit Word Index Group Limit Definitions window:
3 | Complete these fields in the window: |
Field |
Action |
Group Limit ID |
Enter a code that identifies the group limit. For example, if you are creating a group limit that combines a “Juvenile Nonfiction” collection and a “Juvenile Fiction” collection into one limit option, you might enter “kids”. Enter a code that is short and that includes letters and numbers only (no spaces or punctuation marks). |
Description |
Enter a description of the group limit. |
Group Limit Member |
Enter the data you want to include in the group limit. For example, to include a location from your item or copy records, enter the location code. Or, to include the French language element from your MARC records, enter “fre”. Important: Be sure to enter the data exactly as it exists the database. Refer to your Horizon tables or MARC manual to verify if necessary. Click New for each additional piece of data you want to add. Include only data of the same type (that is, from the same table column or MARC field) in the same group limit. |
4 | Save your changes. |
© 1998-2017 Sirsi Corporation