neo4j | standalone server , or an embeddable component | Graph Database library

 by   neo4j Java Version: 5.14.0 License: Non-SPDX

kandi X-RAY | neo4j Summary

kandi X-RAY | neo4j Summary

neo4j is a Java library typically used in Database, Graph Database, MongoDB, Neo4j applications. neo4j has no bugs, it has no vulnerabilities, it has build file available and it has high support. However neo4j has a Non-SPDX License. You can download it from GitHub, Maven.

Neo4j is available both as a standalone server, or an embeddable component. You can download or try online.

            kandi-support Support

              neo4j has a highly active ecosystem.
              It has 11495 star(s) with 2276 fork(s). There are 520 watchers for this library.
              There were 10 major release(s) in the last 6 months.
              There are 344 open issues and 3052 have been closed. On average issues are closed in 441 days. There are no pull requests.
              It has a positive sentiment in the developer community.
              The latest version of neo4j is 5.14.0

            kandi-Quality Quality

              neo4j has 0 bugs and 0 code smells.

            kandi-Security Security

              neo4j has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              neo4j code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              neo4j has a Non-SPDX License.
              Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

            kandi-Reuse Reuse

              neo4j releases are available to install and integrate.
              Deployable package is available in Maven.
              Build file is available. You can build the component from source.
              Installation instructions are not available. Examples and code snippets are available.
              neo4j saves you 1985042 person hours of effort in developing the same functionality from scratch.
              It has 819022 lines of code, 67605 functions and 8566 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed neo4j and discovered the below as its top functions. This is intended to give you an instant insight into neo4j implemented functionality, and help decide if they suit your requirements.
            • Checks if two objects are equals .
            • Apply changes to a node .
            • Creates a new instance of AbstractLogger .
            • Writes a schema map value .
            • Attempts to lock the list of nodes that need to be locked .
            • Flush the translation table .
            • Refresh all alive keys in the current node .
            • Converts an expression to an AnyValue .
            • Check the existence of an entity .
            • Reads and validates the next key value batch .
            Get all kandi verified functions for this library.

            neo4j Key Features

            No Key Features are available at this moment for neo4j.

            neo4j Examples and Code Snippets

            The neo4j configuration .
            javadot img1Lines of Code : 4dot img1License : Permissive (MIT License)
            copy iconCopy
                public org.neo4j.ogm.config.Configuration getConfiguration() {
                	return new Builder().uri(URL).build();
            Is it possible to use arrow functions in react props?
            Lines of Code : 22dot img2License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            class Child extends Component {
              render() {
                return <>;
            class Parent extends Component {
              list = [
                { btn: {...someProps}},
                { btn: {...someProps} },
                { btn: {...someProps} },
            How to output every combination of values in 2 columns, in groups? - SQL
            Lines of Code : 17dot img3License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            SELECT  p.group_id, p.parent, c.child
            FROM   ( 
                       SELECT group_id, parent
                       FROM   YourTable
                       GROUP BY group_id, parent
                   p CROSS JOIN 
                       SELECT group_id, child
            SwiftUI - MKMapView - Display map center coordinate in a @EnvironmentObject variable
            Lines of Code : 14dot img4License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            class Coordinator: NSObject, MKMapViewDelegate {
                var parent: MapView
                init(_ parent: MapView) {
                    self.parent = parent
            func mapView(_ mapView: MKMapView, regionDidChangeAn
            React Highcharts - how to use drillUp from parent component?
            Lines of Code : 45dot img5License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            const Child = ({ setChart }) => {
              const chartComponent = useRef(null);
              useEffect(() => {
              }, []);
              return (
            How to fix the error, " Each child must be laid out exactly once." in flutter
            Lines of Code : 81dot img6License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
              Widget build(BuildContext context) {
                return Scaffold(
                  appBar: AppBar(
                    title: Text('BMI CALCULATOR'),
                    centerTitle: true,
                  body: Column(
                    children: [
            Java not choosing the most specific method when called through a generic wrapper?
            Javadot img7Lines of Code : 23dot img7License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            public class Parent {
              void foo(int i) { System.out.println("Parent-int"); }
              void foo(Integer i) { System.out.println("Parent-Integer"); }
            class Child extends Parent {
                void foo(int i) { System.out.println("Child-int"); }
            How to resize accordion after removing a pane in JavaFX
            Javadot img8Lines of Code : 88dot img8License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            public class SimpleLayoutAccordionOnRemove extends Application {
                 * AccordionSkin that hacks the broken layout after remove of expanded pane.
                public static class HackedAccordionSkin extends AccordionSkin {
            Changing In to Exists in SQL - with DISTINCT
            Lines of Code : 11dot img9License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            WHERE EXISTS (
              SELECT 1
              FROM ORGHEADER AS aaa
              WHERE aaa.oh_code = t.code
                AND aaa.oh_pk NOT IN (
                  SELECT parent 
                  FROM ORGRELATEDPARTY  
                  WHERE pr_partytype = 'MNG'
            Controling an Item "enabled" property in a repeater from a checkbox in another repeater
            Lines of Code : 90dot img10License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            import QtQuick 2.9
            import QtQuick.Layouts 1.2
            import QtQuick.Controls 2.2
            import QtQuick.Window 2.9
            Window {
                width: 640
                height: 480
                visible: true
                ListModel {
                    id: patterns
                    ListElement {

            Community Discussions


            'Session' object has no attribute 'session'
            Asked 2022-Apr-05 at 07:20

            I am receiving an error

            this is my code block (simplified, but still demonstrates error)



            Answered 2022-Apr-05 at 07:20


            Returning sum of specific node property values Neo4j
            Asked 2022-Mar-25 at 08:15

            I have the same types of nodes in a Neo4j graph. I want to return node value sums. Below is an example graph:

            I want to return them in such a way that node values (vals) are summed w.r.t alias and name fields.



            Answered 2022-Mar-25 at 07:10


            spring-data-neo4j v6: No converter found capable of converting from type [MyDTO] to type [org.neo4j.driver.Value]
            Asked 2022-Mar-16 at 17:26


            I'm migrating a kotlin spring data neo4j application from spring-data-neo4j version 5.2.0.RELEASE to version 6.0.11.

            The original application has several Repository interfaces with custom queries which take some DTO as a parameter, and use the various DTO fields to construct the query. All those types of queries currently fail with



            Answered 2021-Aug-23 at 21:03

            RTFM Custom conversions ...

            Found the solution myself. Hopefully someone else may benefit from this as well.


            Create a custom converter



            Gremlin: Return new edges created in a query without saving them (equivalent to APOC vRelationship)
            Asked 2022-Mar-14 at 14:37

            I have a graph with two types of nodes: Persons and Houses. In this graph, persons can sell houses (SELLS relationship), and houses are bought by persons (IS_BOUGHT_BY relationship). This could be represented as the following diagram:



            Answered 2022-Mar-14 at 14:37

            Currently, Gremlin, outside of perhaps using in-line code (closure/lambda), has no way to inject virtual edges into a query result. This might be a good feature request to open as a Jira ticket for Apache Tinkerpop at this location.

            As a short term solution, I think the best you can do is to create the edges for the needs of a visualization and perhaps give them a unique property key and value something like "virtual":true and to delete such edges when no longer needed.



            FIlter the list with a condition in Neo4J
            Asked 2022-Mar-11 at 14:05

            Suppose I have a table of this sort



            Answered 2022-Mar-11 at 11:06

            Cypher has a list comprehension syntax:



            Can't load CSV from Drive to Neo4j
            Asked 2022-Mar-09 at 05:08

            I am using the following cypher code:



            Answered 2021-Aug-09 at 20:20

            You need to use the download link instead of the sharing link. This works for me:



            Is it possible to connect to AuraDB with neomodel?
            Asked 2022-Mar-01 at 16:13

            Is it possible to connect to AuraDB with neomodel?

            AuraDB connection URI is like neo4j+s://
            This is not contained user/password information.

            However, connection config of neomodel is bolt and it is contained user/password information.
            config.DATABASE_URL = 'bolt://neo4j:password@localhost:7687'



            Answered 2022-Mar-01 at 16:13

            Connecting to neo4j Aura uses neo4j+s protocol so you need to use the provided uri by Aura.


            In example below; you can set the database url by setting the userid and password along with the uri. It works for me so it should also work for you.



            GraphQL Custom directive enforcing value restrictions
            Asked 2022-Jan-13 at 11:52

            I need to create a custom directive on INPUT_FIELD_DEFINITION to check if the provided value of the enum isn't being changed to the previous "state" (business logic is that states must go UNAPPROVED - > APPROVED -> CANCELLED -> FULFILLED) but can't quite figure out how to map values in constructor of the enum type.

            All my code is available at github

            I'm using nextJs backend functionality with neo4j database that generates resolvers for whole schema.



            Answered 2022-Jan-13 at 11:52

            Instead of using custom directive I used graphql-middleware lib to create middleware that is triggered only when updateOrders mutation is being used.



            Is neo4j 3.5 impacted by CVE-2021-44228?
            Asked 2021-Dec-15 at 15:28

            I found that only neo4j > 4.2 is impacted by this vulnerability (here and here )

            But in neo4j 3.5.21 pom I see a dependency to log4j (here):



            Answered 2021-Dec-13 at 14:07

            Is seems that log4j version 1.2.17 is used in neo4j 3.5.21 and this version is not vulnerable to as the vulnerability was introduced with version 2.10.0.

            In any way log4j version 1.2.17 is vulnerable to which has a score of 9.8 out of 10. It is a different attack vector maybe harder to exploit, but same as critical and should not be used in production.

            You should update your neo4j version in any way.



            Neo4j: Get nodes that are at least related with some items of a list
            Asked 2021-Dec-12 at 19:13

            I have a Neo4j database where i have ingredient nodes and recipe nodes. One recipe is connected to many nodes, so, for a simple cheddar sandwich, the recipe node would be connected to bread and cheddar cheese. What i wanted to achieve is to query all the recipes that contain for example at least pepper and salt so if my recipe has pepper, salt and ham it would match. What i have tried following this example is:



            Answered 2021-Dec-12 at 18:58

            This looks like a very awkward way of doing this.

            Most people would use a relational database and SQL.

            The database would have a table that stores the relation "ingredient is used in recipe" which connects the ingredient ID to the recipe ID.

            Then you write


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install neo4j

            You can download it from GitHub, Maven.
            You can use neo4j like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the neo4j component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer For Gradle installation, please refer .


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
            Find more information at:

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          • CLI

            gh repo clone neo4j/neo4j

          • sshUrl


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