NB: This is an enterprise feature and it is only available in PGX versions embedded in supported Oracle products.

Oracle RDF Format

PGX allows the loading of graphs in RDF format from the Oracle database. To read from RDF, you need to specify the following additional fields in the graph config:

Field	Type	Description	Default
`name`	`string`	RDF model name in database	required
`accepted_predicates`	`array of string`	predicates of triples that are transformed to edges	`[]`
`array_compaction_threshold`	`number`	[only relevant if the graph is optimized for updates] threshold used to determined when to compact the delta-logs into a new array. If lower than the engine min_array_compaction_threshold value, min_array_compaction_threshold will be used instead	`0.2`
`attributes`	`object`	additional attributes needed to read/write the graph data	`null`
`data_source_id`	`string`	data source id to use to connect to an RDBMS instance	`null`
`edge_id_strategy`	`enum[no_ids, keys_as_ids, unstable_generated_ids]`	Indicates what ID strategy should be used for the edges of this graph. If not specified (or set to null), the strategy will be determined during loading or using a default value	`null`
`edge_id_type`	`enum[long]`	type of the edge ID. For homogeneous graphs, if not specified (or set to null), it will default to long.	`null`
`edge_props`	`array of object`	specification of edge properties associated with graph	`[]`
`error_handling`	`object`	error handling configuration	`null`
`external_stores`	`array of object`	Specification of the external stores where external string properties reside.	`[]`
`format`	`enum[pgb, edge_list, adj_list, graphml, pg, rdf, two_tables]`	graph format	`null`
`ignored_predicates`	`array of string`	predicates of triples that are ignored	`[]`
`jdbc_url`	`string`	jdbc URL pointing to an RDBMS instance	`null`
`keystore_alias`	`string`	alias to the keystore to use when connecting to database	`null`
`loading`	`object`	loading-specific configuration	`null`
`local_date_format`	`array of string`	array of local_date formats to use when loading and storing local_date properties. Please see DateTimeFormatter for a documentation of the format string	`[]`
`max_prefetched_rows`	`integer`	maximun number of rows prefetched during each round trip resultset-database	`10000`
`optimized_for`	`enum[read, updates]`	Indicates if the graph should use data-structures optimized for read-intensive scenarios or for fast updates	`read`
`partition_while_loading`	`enum[by_label, no]`	Indicates if the graph should be partitioned while loading	`null`
`password`	`string`	password to use when connecting to database	`null`
`point2d`	`string`	longitude and latitude as floating point values separated by a space	`0.0 0.0`
`prefixes`	`array of object`	IRI prefixes	`[]`
`time_format`	`array of string`	the time format to use when loading and storing time properties. Please see DateTimeFormatter for a documentation of the format string	`[]`
`time_with_timezone_format`	`array of string`	the time with timezone format to use when loading and storing time with timezone properties. Please see DateTimeFormatter for a documentation of the format string	`[]`
`timestamp_format`	`array of string`	the timestamp format to use when loading and storing timestamp properties. Please see DateTimeFormatter for a documentation of the format string	`[]`
`timestamp_with_timezone_format`	`array of string`	the timestamp with timezone format to use when loading and storing timestamp with timezone properties. Please see DateTimeFormatter for a documentation of the format string	`[]`
`username`	`string`	username to use when connecting to an RDBMS instance	`null`
`vector_component_delimiter`	`character`	delimiter for the different components of vector properties	`;`
`vertex_id_strategy`	`enum[no_ids, keys_as_ids, unstable_generated_ids]`	Indicates what ID strategy should be used for the vertices of this graph. If not specified (or set to null), the strategy will be automatically detected	`null`
`vertex_id_type`	`enum[int, integer, long, string]`	type of the vertex ID. For homogeneous graphs, if not specified (or set to null), it will default to a specific value (depending on the origin of the data).	`null`
`vertex_label_predicates`	`array of string`	predicates of triples that are transformed to vertex labels	`[]`
`vertex_props`	`array of object`	specification of vertex properties associated with graph	`[]`