Index Management Service 

Use

The index management service makes documents in CM repositories accessible for search and classification. This is done in a generic way by providing interfaces to index services that implement these functions.

 

Prerequisites

·        The TREX search and classification engines have been installed.

·        A service user that has at least read access to all repositories that are to be indexed exists. This user must be specified in the Crawling Service User parameter of the index management service (see below).

·        The crawler service is activated so that document collections can be indexed.

·        A taxonomy repository is set up so that the TREX classification service can be used.

·        The application property service is registered for all repositories that contain documents to be classified.

·        Either a TREX HTTP server (for example, an MS IIS with TREX HTTP server extension) or a TREX name server that dispatches requests to (multiple) TREX HTTP servers needs to be specified in the TREX configuration. The trexmemory query cache must be configured (see Caches and TREX Java Client Configuration).

 

Features

The following index services are contained in the standard delivery.

·        The TREX search service (trexSearch)

·        The TREX classification service (trexClassification)

·        The combined TREX search and classification service (trexSearchAndClassification)

·        The PCD search service (portalRolesSearch)

 

The following parameters define the index management service:

Parameters of the Index Management Service

Parameter	Required	Description
Max Number of Active Crawlers	No	Number of crawlers that are active in the index management service. If more crawlers are active than are specified (default setting: 15), the additional crawlers are placed in a queue. As soon as the number of active crawlers falls beneath the specified maximum, the crawlers from the queue are started.
Max Transfer Size	Yes	The content of documents whose file size does not exceed the specified value is directly forwarded to be indexed by the Search and Classification (TREX) components. For performance reasons, for documents that exceed the specified value only an address is forwarded to TREX. TREX then fetches the content of the document for indexing. Presetting: 10000 bytes.
Index Services	Yes	Specifies the index services called by the index management service. Presetting: trexSearch, trexClassification, trexSearchAndClassification
Crawling Service User	Yes	User that is used by the index management service when it accesses documents. Default: index_service This user is defined as a service user with read permissions for all resources in J2EE user management and KM (see Permissions).
Taxonomy Repository Prefix	Yes	URI prefix of the taxonomy repository. Default: /taxonomies

 

Activities

The index management service is preconfigured in the standard delivery. Normally, you do not need to change its configuration.

To check or modify the configuration, choose Content Management ® Global Services ® Index Management Service.

 

See also:

Index Administration

Configuring the Search for Portal Pages and iViews