neo4j-php-ogm | Neo4j Object Graph Mapper for PHP | Graph Database library
kandi X-RAY | neo4j-php-ogm Summary
kandi X-RAY | neo4j-php-ogm Summary
Neo4j Object Graph Mapper for PHP
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Top functions reviewed by kandi - BETA
- Hydrate a relationship entity .
- Create proxy class .
- Builds the relationship metadata
- Get create query .
- Creates a new node creation .
- Detects the number of referenced relationship references .
- Generate a MATCH query for matching criteria .
- Builds the entity metadata from a node .
- Handles the query result .
- Adds a value to an object .
neo4j-php-ogm Key Features
neo4j-php-ogm Examples and Code Snippets
Community Discussions
Trending Discussions on neo4j-php-ogm
QUESTION
I am trying to install 3 packages, 1 of which I forked on GitHub. The installation fails and the error message says to remove the root package and the git branch on which I am (develop) which makes no sense.
What I tried:
- Delete the composer.lock
- Delete the vendor folder
- Execute the composer clearcache command
- Try on a blank project : it works
In summary, on a blank project it works properly but not on my other project (esynaps/api-v2.e-synaps.com).
The error message:
...ANSWER
Answered 2018-May-29 at 13:09Thanks to rob006 for his help. Just remove the "replace" property in the composer.json. The utility of this property has been misunderstood.
https://getcomposer.org/doc/04-schema.md#replace
Lists packages that are replaced by this package. This allows you to fork a package, publish it under a different name with its own version numbers, while packages requiring the original package continue to work with your fork because it replaces the original package.
QUESTION
In neo4j to relate 2 nodes you can make a simple relationship or make a RelationshipEntity, as shown in: relationship-entity.
Using a simple relationship you can add properties such as ... CREATE (Hugo)-[:ACTED_IN {roles:['Agent Smith']}]->(TheMatrix) ...
my question is: when is it appropriate to use RelationshipEntity ?, would it be in a relation n: m of a relational database?
Why in relationship-entity utilize relationshipEntities and not a simple relationship?
...ANSWER
Answered 2018-May-09 at 13:19From documentation Relationship-entity
To access the full data model of graph relationships, POJOs can also be annotated with @RelationshipEntity, making them relationship entities. Just as node entities represent nodes in the graph, relationship entities represent relationships. Such POJOs allow you to access and manage properties on the underlying relationships in the graph.
It used depends of what you need to achieve. You can used it to add more details about the relationship if you need. May be add a price in buying command.
QUESTION
I'm working Neo4j from PHP. To generate the uuid field in the nodes I am using: neo4j-uuid. I also use: graphaware/neo4j-php-ogm, when I create a node, I do not return the value assigned to the UUID field, I have to make a new query to get that value, I need to hydrate the UUID value automatically when the object is created, just like the ID is hydrated.
...ANSWER
Answered 2018-May-04 at 17:21From the GraphAware Neo4j UUID Github Repo:
If you create a node and return it immediately, its contents will not reflect changes performed by transaction event handlers such as this one -- thus the UUID will not be available. A separate call must be made to get the UUID.
That is: this is the expected behavior. Currently you should make a new query to get the node with the generated UUID property.
QUESTION
I am struggling to read data from a neo4j db. i use the entitymanager provided in the neo4j-php-ogm library.
...ANSWER
Answered 2017-Jul-11 at 13:42This is because json_encode doesn't know how to encode objects other than stdClass.
You can for now make your class implement JsonSerializable and specify the properties that should be serialized.
I added a test that show how to do it :
https://github.com/graphaware/neo4j-php-ogm/commit/b013c3c2717cb04af0b0c3ab8a770b207d06e5a0
QUESTION
I recently created a new symfony project (3.1) with a dependency on graphaware/neo4j-php-ogm and neo4j/neo4j-bundle to manage my database.
Then I created a new Entity class named User with properties (login, password, ...) and I want to automatically set the current date before the flush event occurs (on preFlush). I saw the PRE_FLUSH constant in neo4j-php-ogm/src/Events.php (https://github.com/graphaware/neo4j-php-ogm/blob/master/src/Events.php) but I haven't found any information about it in the documentation.
Well, my question is : Can we use this functionality in the actual version of the OGM ? If yes, do you have an example of the usage ?
Thank you for your help !
...ANSWER
Answered 2017-Feb-10 at 21:50Yes you can, it is not documented you are right, I'll make sure it will be soon.
Integration test here : https://github.com/graphaware/neo4j-php-ogm/blob/master/tests/Integration/EventListenerIntegrationTest.php
First, You need create a class that will act as EventListener to the preFlush event of the EntityManager and a method reacting to the event :
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Install neo4j-php-ogm
PHP requires the Visual C runtime (CRT). The Microsoft Visual C++ Redistributable for Visual Studio 2019 is suitable for all these PHP versions, see visualstudio.microsoft.com. You MUST download the x86 CRT for PHP x86 builds and the x64 CRT for PHP x64 builds. The CRT installer supports the /quiet and /norestart command-line switches, so you can also script it.
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