- Text Search >
- Text Search with Basis Technology Rosette Linguistics Platform
Text Search with Basis Technology Rosette Linguistics Platform¶
On this page
Enterprise Feature
Available in MongoDB Enterprise only.
Overview¶
New in version 3.2.
In addition to the languages supported by text search in MongoDB, MongoDB Enterprise provides support for the following additional languages: Arabic, Farsi (specifically Dari and Iranian Persian dialects), Urdu, Simplified Chinese, and Traditional Chinese.
To provide support for these six additional languages, MongoDB Enterprise integrates Basis Technology Rosette Linguistics Platform (RLP) to perform normalization, word breaking, sentence breaking, and stemming or tokenization depending on the language.
MongoDB Enterprise supports RLP SDK 7.11.1 on Red Hat Enterprise Linux 6.x. For information on providing support on other platforms, contact your sales representative.
Prerequisites¶
To use MongoDB with RLP, MongoDB requires a license for the Base Linguistics component of RLP and one or more languages specified above. MongoDB does not require a license for all six languages listed above.
Support for any of the specified languages is conditional on having a
valid RLP license for the language. For instance, if there is only an
RLP license provided for Arabic, then MongoDB will only enable support
for Arabic and will not enable support for any other RLP based
languages. For any language which lacks a valid license, the MongoDB
log will contain a warning message. Additionally, you can set the
MongoDB log verbosity level to 2 to log debug messages that
identify each supported language.
You do not need the Language Extension Pack as MongoDB does not support these RLP languages at this time.
Contact Basis Technology at info@basistech.com to get a copy of RLP and a license for one or more languages. For more information on how to contact Basis Technology, see http://www.basistech.com/contact/.
Procedure¶
Download Rosette Linguistics Platform from Basis Technology.¶
From Basis Technology, obtain the links to download the RLP C++ SDK
package file, the documentation package file, and the license file
(rlp-license.xml) for Linux x64. Basis Technology provides the
download links in an email.
Using the links, download the RLP C++ SDK package file, the
documentation package file, and the license file
(rlp-license.xml) for Linux x64.
Note
These links automatically expire after 30 days.
Install the RLP binaries.¶
Untar the RLP binaries and place them in a directory; this directory
is referred to as the installation directory or BT_ROOT. For this
example, we will use /opt/basis as the BT_ROOT.
tar zxvC /opt/basis rlp-7.11.1-sdk-amd64-glibc25-gcc41.tar.gz
Move the RLP license into the RLP licenses directory.¶
Move the RLP license file rlp-license.xml to the
<BT_ROOT>/rlp/rlp/licenses directory; in our example, move the
file to the /opt/basis/rlp/rlp/licenses/ directory.
mv rlp-license.xml /opt/basis/rlp/rlp/licenses/
Run mongod with RLP support.¶
To enable support for RLP, use the --basisTechRootDirectory
option to specify the BT_ROOT directory.
Include any additional settings as appropriate for your deployment.
mongod --basisTechRootDirectory=/opt/basis
Additional Information¶
For installation help, see the RLP Quick Start manual or Chapter 2 of the Rosette Linguistics Platform Application Developer’s Guide.
For debugging any RLP specific issues, you can set the rlpVerbose
parameter to true (i.e. --setParameter rlpVerbose=true) to view
INFO messages from RLP.
Warning
Enabling rlpVerbose has a performance overhead and should only
be enabled for troubleshooting installation issues.