Full Text Search Configuration

Allegra can search items and their attachments in PDF, OpenOffice, Word, Excel, PowerPoint, HTML, RTF and XML. You have to configure the full text search in Allegra.

You can enable or disable full text search. Full-text search requires disk space, especially if there are numerous large attachments that need to be indexed. The computational load of indexing can be large if a full re-index is forced during system startup.

You can enable or disable attachment indexing. Deactivating is useful if you only have limited memory space available or want to reduce the computational load on the server.

We recommend that you enable indexing of attachments.

If this check box is selected, a complete index is performed from scratch during system startup. This may take some time (minutes to hours), depending on the number of items and attachments in the database. During the indexing procedure, the full-text search does not work.

It is recommended not to perform an automatic re-index every time the server is started. It is usually sufficient to do a re-index every half year or so. It is best to disable access to the system during the re-index process.

Allegra uses the Lucene full-text indexing and query engine. When building the index, it is usually useful to ignore words that you don’t usually search for and that occur frequently. For example, in the German language there are words like “ein”, “der, die das”, “auch”, “aber”, and so on. These words should not be indexed.

For this purpose, there are various analyzers that focus the indexing on those parts of the text that are really useful. However, this depends on the language of the text that is being indexed.

Here you can choose the analyzer that best suits your needs. The standard analyzer is not as efficient as a language-specific analyzer, but should work in all cases. If you have texts and attachments in different languages, the standard analyzer is the best solution.