OWLIM-SE Configuration

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Note: This parameter cannot be set via a command line argument |
| *disable-sameAs* | X | X | {color:#ff0000}Must NOT change{color} | _default_ *false*, enables or disables the {{owl:sameAs}} optimisation |
| *enable-context-index* | X | X | Yes \\ | _default_ *false*, if set to 'true' then OWLIM will build the context index/indices. *NB* After disabling this index, the files remain on disk and are not updated. If re-enabling, first shutdown the repository and delete the following files: {{pcso}}, {{pcso.index}}, {{pcos}} and {{pcos.index}} |
| *enable-context-index* | X | X | Yes \\ | _default_ *false*, if set to 'true' then OWLIM will build and use the context index/indices. |
| *enable-literal-index* | X | X | Yes \\ | _default_ *true*, enables or disables the [literal index|OWLIM-SE Indexing specifics]. The literal index is always built as data is loaded/modified. This parameter only affects whether the index is used during query-answering. |
| *enable-optimization* | X | X | Yes \\ | _default_ *true*, enables or disables query optimisation. \\
*NOTE* disabling query optimisation is rarely needed - usually only for debugging purposes. Also be aware that disabling query optimisation will also disable the correct behaviour of plug-ins (full-text search, geo-spatial extensions, RDF Rank, etc) |
| *enablePredicateList* | X | X | Yes \\ | _default_ *false:* enables or disables mappings from an entity (subject or object) to its predicates; switching this on can drastically speed up queries that use wildcard predicate patterns. \\ |
*NB* After disabling this index, the files remain on disk and are not updated. If re-enabling, first shutdown the repository and delete the following files: {{predLists}} and {{predLists.index}} |
| *entity-id-size* | X | X | No \\ | _default_ *32*, possible values are *32* and *40*; defines the bit size of internal IDs used to index entities (URIs, blank nodes and literals). For most cases, this parameter can be left to its default value. However, if very large datasets are used that contain more than 2{^}32^ entities, then this parameter should be set to *40*. Be aware, that this can only be set when instantiating a new repository and converting an existing repository between 32 and 40-bit entity widths is not possible. |
| *entity-index-size* | X | X | No \\ | _default_ *1000000*, defines the number of entity hash table index entries; the bigger the size, the less the collisions in the hash table and the faster the entity retrieval; the entity hash table does not rehash so its index size is constant throughout the life of the repository. |