Windchill System Administrator's Guide
Windchill System Administrator's Guide
Windchill System Administrator's Guide
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Indexer Objects<br />
Index Loader<br />
When an object is subject to indexing, index entries are maintained in the<br />
background whenever the object or one of the objects contributing to its index<br />
entry is changed.<br />
To view, update, or create indexing policies, use the Policy Administrator. For<br />
details on how to use the Policy Administrator, see the <strong>Windchill</strong> Business<br />
Administrator’s <strong>Guide</strong>.<br />
For each <strong>Windchill</strong> system publishing to a RetrievalWare index, there is an<br />
associated instance of an indexer object. The indexer object acts as an adapter<br />
between the indexable objects within the <strong>Windchill</strong> system and the given<br />
RetrievalWare index. The indexer classes implement the way in which objects are<br />
indexed. This behavior can include translating metadata to common attribute<br />
names and values, and collecting attributes from related or contained objects to be<br />
included in an indexable object's index entry.<br />
Indexer classes are implemented as standard <strong>Windchill</strong> business classes to make<br />
them easily customizable and extendable. A reference implementation is provided<br />
that knows how to map simple attributes to a general-purpose index format. The<br />
reference implementation can be augmented or subclassed to tailor this behavior<br />
for the needs of particular kinds of RetrievalWare indexes. Simple customizations<br />
will typically include navigating associations between several objects in order to<br />
build more meaningful and complete index entries. For example, the index entry<br />
for a container object may include information from the objects contained within<br />
it in addition to the attributes of the container itself.<br />
Indexer objects perform their work in the background and execute as a predefined<br />
user. The user identity is configured when an indexer object is created and is used<br />
to enforce access control policies for the objects being indexed.<br />
The index loader is responsible for feeding information into RetrievalWare for<br />
indexing. It is invoked by submitting index data to an HTTP Servlet or CGI that<br />
runs on the host where the RetrievalWare is located. The index loader invokes a<br />
RetrievalWare API to initiate the indexing of metadata and content file<br />
information.<br />
A-22 <strong>Windchill</strong> <strong>System</strong> Administrator’s <strong>Guide</strong>
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