removeNodeProperty
Remove properties from nodes in Neo4j database
Syntax
Description
removeNodeProperty(
removes properties from one or more nodes in a Neo4j® database using a Neo4j database connection.neo4jconn
,node
,propertyNames
)
Examples
Remove One Node Property
Remove one node property from a single node in a Neo4j® database and access the node.
Create a Neo4j database connection using the URL http://localhost:7474/db/data
, user name neo4j
, and password matlab
.
url = 'http://localhost:7474/db/data'; username = 'neo4j'; password = 'matlab'; neo4jconn = neo4j(url,username,password);
Check the Message
property of the Neo4j connection object neo4jconn
. The blank Message
property indicates a successful connection.
neo4jconn.Message
ans = []
Retrieve the first node in the table of node information. This node has the label Person
.
nlabel = "Person";
nodeinfo = searchNode(neo4jconn,nlabel);
node = nodeinfo.NodeObject(1);
Set the Title
node property for a single node in the database using the Neo4j database connection.
properties.Title = "Analyst";
setNodeProperty(neo4jconn,node,properties)
Display the node information for the updated node.
nodeinfo = searchNode(neo4jconn,nlabel); node = nodeinfo.NodeObject(1); node.NodeData
ans = struct with fields:
name: 'User1'
Title: 'Analyst'
Remove the node property.
propertyNames = "Title";
removeNodeProperty(neo4jconn,node,propertyNames)
Display the node information for the updated node.
nodeinfo = searchNode(neo4jconn,nlabel); node = nodeinfo.NodeObject(1); node.NodeData
ans = struct with fields:
name: 'User1'
Close the database connection.
close(neo4jconn)
Remove Multiple Node Properties and Return Output
Remove node properties from multiple nodes in a Neo4j® database. Access the updated node information using an output argument.
Create a Neo4j database connection using the URL http://localhost:7474/db/data
, user name neo4j
, and password matlab
.
url = 'http://localhost:7474/db/data'; username = 'neo4j'; password = 'matlab'; neo4jconn = neo4j(url,username,password);
Check the Message
property of the Neo4j connection object neo4jconn
. The blank Message
property indicates a successful connection.
neo4jconn.Message
ans = []
Find nodes with the label Person
.
nlabel = "Person";
nodeinfo = searchNode(neo4jconn,nlabel);
nodes = nodeinfo.NodeObject;
Set the Title
and Department
node properties for multiple nodes using the Neo4j database connection. Display the updated node information for the first three nodes.
properties.Title = "Analyst"; properties.Department = "Sales"; nodeinfo = setNodeProperty(neo4jconn,nodes,properties); nodeinfo.NodeData{1:3}
ans = struct with fields:
Department: 'Sales'
name: 'User1'
Title: 'Analyst'
ans = struct with fields:
Department: 'Sales'
name: 'User3'
Title: 'Analyst'
ans = struct with fields:
Department: 'Sales'
name: 'User2'
Title: 'Analyst'
Remove the node properties using the property names. Display the updated node information for the first three nodes. The nodeinfo
output argument is a Neo4jNode
object.
propertyNames = ["Title" "Department"]; nodeinfo = removeNodeProperty(neo4jconn,nodes,propertyNames); nodeinfo.NodeData{1:3}
ans = struct with fields:
name: 'User1'
ans = struct with fields:
name: 'User3'
ans = struct with fields:
name: 'User2'
Close the database connection.
close(neo4jconn)
Input Arguments
neo4jconn
— Neo4j database connection
Neo4jConnect
object
Neo4j database connection, specified as a Neo4jConnect
object created with the function neo4j
.
node
— Node
Neo4jNode
object | Neo4jNode
object array | numeric scalar | numeric vector
Node in a Neo4j database, specified as a Neo4jNode
object, Neo4jNode
object array, numeric scalar,
or a numeric vector. For one node, specify a Neo4jNode
object or a
numeric scalar. For multiple nodes, specify a Neo4jNode
object array or
a numeric vector.
The numeric scalar or vector must contain Neo4j database node identifiers.
Example: 15
Example: [2,3,4]
propertyNames
— Property names
character vector | cell array of character vectors | string scalar | string array
Property names, specified as a character vector, cell array of character vectors, string scalar, or string array. For one property, use a character vector or string scalar. For multiple properties, use a cell array of character vectors or a string array.
Example: "Analyst"
Example: ["Analyst" "Clerk"]
Data Types: char
| string
Output Arguments
nodeinfo
— Node information
Neo4jNode
object | table
Node information in the Neo4j database, returned as a Neo4jNode
object for one node or as a table for multiple nodes.
For multiple nodes, the table contains these variables:
NodeLabels
— Cell array of character vectors that contains the node labels for each database nodeNodeData
— Cell array of structures that contains node information such as property keysNodeObject
—Neo4jNode
object for each database node
The row names of the table are Neo4j node identifiers of each database node.
Version History
Introduced in R2019a
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