User's Manual
Table Of Contents
- C-Series User Guide
- Safety information
- Regulatory compliance
- Overview
- Software installation
- Typical workflows
- Startup and shutdown
- Installing system security updates
- Managing the 3M™ SelfCheck™ System
- Home page
- Basic administration
- Advanced administration
- General maintenance
- Solving problems
- Obtaining service and supplies
- Appendix A: Email notification messages
⎟ 41
ID filters and validators
Filtering item IDs
Some item identification formats may not be compatible with those used by
your circulation system, especially if the format has changed recently. For
incompatible formats, the SelfCheck system can use filters to modify IDs
before they are sent to the circulation system.
The filtering process works as follows:
1 The system reads the ID from the item tag.
2 The filter modifies the ID to meet the requirements of the circulation
system.
3 The system sends the modified ID to the circulation system.
ID filters are managed in the ID Settings tab.
Using multiple filters
It is possible to create multiple filters to match different ID formats. The
SelfCheck system applies filters in the order in which they are listed, but only
the first filter whose constraint matches the ID is applied. All subsequent
filters are ignored.
For example, suppose that the library has implemented a new 12-character
ID and needs to convert older 8- and 10-character IDs to the new system.
Suppose you create separate filters for the 8-character and the 10-character
IDs based on their length. When the SelfCheck system subsequently scans
an ID, it compares the ID length to that specified in the first, 8-character,
filter. If they match, it applies the actions of that filter to the ID and ignores
the second filter. If they do not match, it next compares the ID length to that
specified in the second, 10-character, filter. If they match, it applies the
actions of the second filter to the ID. If you have a third filter based on either
length or the resulting 12-character length, but performing a different action,
it is ignored.
To perform multiple actions on an ID, use several action commands in one
filter rather than trying to apply multiple filters to the same ID.
Using filters with validators
Validators accept or reject IDs for further processing, including filtering. If you
use both validators and filters, you should make sure that ID formats that you
want to filter are accepted by your validators. See “
Validating item IDs” on
page
44.