Create Graph

Creates a new graph network using given nodes, edges, weights, and restrictions.

IMPORTANT: It's highly recommended that you review the Network Graphs & Solvers concepts documentation, the Graph REST Tutorial, and/or some graph examples before using this endpoint.

Input Parameter Description

Name Type Description
graph_name string Name of the graph resource to generate.
directed_graph boolean

If set to true, the graph will be directed. If set to false, the graph will not be directed. Consult Directed Graphs for more details. The default value is true. The supported values are:

  • true
  • false
nodes array of strings Nodes represent fundamental topological units of a graph. Nodes must be specified using identifiers; identifiers are grouped as combinations. Identifiers can be used with existing column names, e.g., 'table.column AS NODE_ID', expressions, e.g., 'ST_MAKEPOINT(column1, column2) AS NODE_WKTPOINT', or constant values, e.g., '{9, 10, 11} AS NODE_ID'. If using constant values in an identifier combination, the number of values specified must match across the combination.
edges array of strings Edges represent the required fundamental topological unit of a graph that typically connect nodes. Edges must be specified using identifiers; identifiers are grouped as combinations. Identifiers can be used with existing column names, e.g., 'table.column AS EDGE_ID', expressions, e.g., 'SUBSTR(column, 1, 6) AS EDGE_NODE1_NAME', or constant values, e.g., "{'family', 'coworker'} AS EDGE_LABEL". If using constant values in an identifier combination, the number of values specified must match across the combination.
weights array of strings Weights represent a method of informing the graph solver of the cost of including a given edge in a solution. Weights must be specified using identifiers; identifiers are grouped as combinations. Identifiers can be used with existing column names, e.g., 'table.column AS WEIGHTS_EDGE_ID', expressions, e.g., 'ST_LENGTH(wkt) AS WEIGHTS_VALUESPECIFIED', or constant values, e.g., '{4, 15} AS WEIGHTS_VALUESPECIFIED'. If using constant values in an identifier combination, the number of values specified must match across the combination.
restrictions array of strings Restrictions represent a method of informing the graph solver which edges and/or nodes should be ignored for the solution. Restrictions must be specified using identifiers; identifiers are grouped as combinations. Identifiers can be used with existing column names, e.g., 'table.column AS RESTRICTIONS_EDGE_ID', expressions, e.g., 'column/2 AS RESTRICTIONS_VALUECOMPARED', or constant values, e.g., '{0, 0, 0, 1} AS RESTRICTIONS_ONOFFCOMPARED'. If using constant values in an identifier combination, the number of values specified must match across the combination.
options map of string to strings

Optional parameters. The default value is an empty map ( {} ).

Supported Parameters (keys) Parameter Description
merge_tolerance If node geospatial positions are input (e.g., WKTPOINT, X, Y), determines the minimum separation allowed between unique nodes. If nodes are within the tolerance of each other, they will be merged as a single node. The default value is '1.0E-5'.
recreate

If set to true and the graph (using input parameter graph_name) already exists, the graph is deleted and recreated. The default value is false. The supported values are:

  • true
  • false
save_persist

If set to true, the graph will be saved in the persist directory (see the config reference for more information). If set to false, the graph will be removed when the graph server is shutdown. The default value is false. The supported values are:

  • true
  • false
add_table_monitor

Adds a table monitor to every table used in the creation of the graph; this table monitor will trigger the graph to update dynamically upon inserts to the source table(s). Note that upon database restart, if save_persist is also set to true, the graph will be fully reconstructed and the table monitors will be reattached. For more details on table monitors, see Create Table Monitor . The default value is false. The supported values are:

  • true
  • false
graph_table If specified, the created graph is also created as a table with the given name, in [schema_name.]table_name format, using standard name resolution rules and meeting table naming criteria. The table will have the following identifier columns: 'EDGE_ID', 'EDGE_NODE1_ID', 'EDGE_NODE2_ID'. If left blank, no table is created. The default value is ''.
add_turns

Adds dummy 'pillowed' edges around intersection nodes where there are more than three edges so that additional weight penalties can be imposed by the solve endpoints. (increases the total number of edges). The default value is false. The supported values are:

  • true
  • false
is_partitioned

The default value is false. The supported values are:

  • true
  • false
server_id Indicates which graph server(s) to send the request to. Default is to send to the server with the most available memory.
use_rtree

Use an range tree structure to accelerate and improve the accuracy of snapping, especially to edges. The default value is true. The supported values are:

  • true
  • false
label_delimiter If provided the label string will be split according to this delimiter and each sub-string will be applied as a separate label onto the specified edge. The default value is ''.

Output Parameter Description

Name Type Description
result boolean Indicates a successful creation on all servers.
num_nodes long Total number of nodes created.
num_edges long Total number of edges created.
edges_ids array of longs [Deprecated] Edges given as pairs of node indices. Only populated if export_create_results internal option is set to true.
info map of string to strings Additional information.