set_property
**Set property ** is a collection of Memgraph's dynamical access and edit of node and relationship properties. The procedures included in it involve copying properties from one entity to another.
Trait | Value |
---|---|
Module type | module |
Implementation | C++ |
Graph direction | directed/undirected |
Edge weights | unweighted/weighted |
Parallelism | sequential |
Procedures
You can execute this algorithm on graph projections, subgraphs or portions of the graph.
copyPropertyNode2Node()
Copies properties from one node to another.
Input:
subgraph: Graph
(OPTIONAL) ➡ A specific subgraph, which is an object of type Graph returned by theproject()
function, on which the algorithm is run.sourceNode: Vertex
➡ The node you want to copy property from.sourceProperties: List[string]
➡ List of properties you want to copy from.targetNode: Vertex
➡ The node you want to copy property to.targetProperties: List[string]
➡ List of properties you want to copy to.
Output:
result: boolean
➡ yieldstrue
if the operation was successful,false
otherwise
Usage:
MATCH (from {id:1}), MATCH (to {id: 2})
CALL set_property.copyPropertyNode2Node(from, ["prop"], to, ["prop"]) YIELD result
RETURN result;
copyPropertyNode2Rel()
Copies properties from one node to another relationship.
Input:
subgraph: Graph
(OPTIONAL) ➡ A specific subgraph, which is an object of type Graph returned by theproject()
function, on which the algorithm is run.sourceNode: Vertex
➡ The node you want to copy property from.sourceProperties: List[string]
➡ List of properties you want to copy from.targetRel: Relationship
➡ The relationship you want to copy property to.targetProperties: List[string]
➡ List of properties you want to copy to.
Output:
result: boolean
➡ yieldstrue
if the operation was successful,false
otherwise
Usage:
MATCH (from {id:1})-[to:TYPE]->({id: 2})
CALL set_property.copyPropertyNode2Rel(from, ["prop"], to, ["prop"]) YIELD result
RETURN result;
copyPropertyRel2Node()
Copies properties from one relationship to another node.
Input:
subgraph: Graph
(OPTIONAL) ➡ A specific subgraph, which is an object of type Graph returned by theproject()
function, on which the algorithm is run.sourceRel: Relationship
➡ The relationship you want to copy property from.sourceProperties: List[string]
➡ List of properties you want to copy from.targetNode: Vertex
➡ The node you want to copy property to.targetProperties: List[string]
➡ List of properties you want to copy to.
Output:
result: boolean
➡ yieldstrue
if the operation was successful,false
otherwise
Usage:
MATCH (to {id:1})-[from:TYPE]->({id: 2})
CALL set_property.copyPropertyRel2Node(from, ["prop"], to, ["prop"]) YIELD result
RETURN result;
copyPropertyRel2Rel()
Copies properties from one relationship to another.
Input:
subgraph: Graph
(OPTIONAL) ➡ A specific subgraph, which is an object of type Graph returned by theproject()
function, on which the algorithm is run.sourceRel: Vertex
➡ The relationship you want to copy property from.sourceProperties: List[string]
➡ List of properties you want to copy from.targetRel: Vertex
➡ The relationship you want to copy property to.targetProperties: List[string]
➡ List of properties you want to copy to.
Output:
result: boolean
➡ yieldstrue
if the operation was successful,false
otherwise
Usage:
MATCH ({id:1})-[from:TYPE]->(to {id: 2}), ({id:3})-[to:TYPE]->(to {id: 4})
CALL set_property.copyPropertyRel2Rel(from, ["prop"], to, ["prop"]) YIELD result
RETURN result;