arangodb/Documentation/DocuBlocks/JSF_general_graph__deleteEdgeDefinition.md

@brief Delete one relation definition

graph_module._deleteEdgeDefinition(edgeCollectionName, dropCollection)

Deletes a relation definition defined by the edge collection of a graph. If the collections defined in the edge definition (collection, from, to) are not used in another edge definition of the graph, they will be moved to the orphanage.

@PARAMS

@PARAM{edgeCollectionName, string, required} Name of edge collection in the relation definition. @PARAM{dropCollection, boolean, optional} Define if the edge collection should be dropped. Default false.

@EXAMPLES

Remove an edge definition but keep the edge collection:

@EXAMPLE_ARANGOSH_OUTPUT{general_graph__deleteEdgeDefinition} var graph_module = require("@arangodb/general-graph") ~ if (graph_module._exists("myGraph")){var blub = graph_module._drop("myGraph", true);} var ed1 = graph_module._relation("myEC1", ["myVC1"], ["myVC2"]); var ed2 = graph_module._relation("myEC2", ["myVC1"], ["myVC3"]); var graph = graph_module._create("myGraph", [ed1, ed2]); graph._deleteEdgeDefinition("myEC1"); db._collection("myEC1"); ~ db._drop("myEC1"); ~ var blub = graph_module._drop("myGraph", true); @END_EXAMPLE_ARANGOSH_OUTPUT

Remove an edge definition and drop the edge collection:

@EXAMPLE_ARANGOSH_OUTPUT{general_graph__deleteEdgeDefinitionWithDrop} var graph_module = require("@arangodb/general-graph") ~ if (graph_module._exists("myGraph")){var blub = graph_module._drop("myGraph", true);} var ed1 = graph_module._relation("myEC1", ["myVC1"], ["myVC2"]); var ed2 = graph_module._relation("myEC2", ["myVC1"], ["myVC3"]); var graph = graph_module._create("myGraph", [ed1, ed2]); graph._deleteEdgeDefinition("myEC1", true); db._collection("myEC1"); ~ db._drop("myEC1"); ~ var blub = graph_module._drop("myGraph", true); @END_EXAMPLE_ARANGOSH_OUTPUT